HE NORMAL SGHOOL QUARTERLY Series 13 October, 1914 Number 53 Posture-Training as a Phase of School Hygiene By MABEL LOUISE CUMMINGS DEC 1936 i*\‘. lINIVtRSItY OF SLLiNOIS PUBLISHT JANUARY, APRIL, JULY. AND OCTOBER OF EACH YEAR BY THE ILLINOIS STATE NORMAL UNIVERSITY, NORMAL, ILLINOIS Enterd August, 1992, at Normal, Illinois, as second-class mail matter under Act oi Congress of July 16, 1S94 N. B.- Any teacher in Illinois may get the Normal School Quarterly regularly by sending exact name and address, and by giving prompt notis of any change of ad- cIpgss. Simplified spellings are used in the offisial publications of the Illinois State Normal University. > Normal School Quarterly Publisht by the Illinois State Normal University, Normal, Illinois Series 13 OCTOBER, 1914 No. 53 POSTURE-TRAINING AS A PHASE OF SCHOOL HYGIENE By Mabel Louise Cummings For the last half-dozen years games and dancing have occupied a prominent place in the physical education of school children. They have absorbed the attention of teach¬ ers as each new thing must and perhaps well may. They have made for themselvs a permanent place in physical training procedure. Their education and helth value is es- tablisht. Their limitations are coming to be understood. Attention is now returning to the training of posture—a phase of physical training which can never be safely neg¬ lected, and without which work along other lines will be in part wasted. Indications are numerous that posture-train¬ ing in the future will be carried on more intelligently and successfully than it has ever been before. Physicians like Lovett and Goldthwaite have made important contributions to our knowledge of defectiv posture; while teachers of physical training, Miss Bancroft perhaps foremost among them, have contributed methods and inspiration. The Scope and Vital Meaning of the Subject Exhaustiv treatment of the subject could scarcely be compast in a sizable volume. I shall ask the reader’s atten¬ tion, therefore, to a consideration of the vertebral colum only, its conformation and the consequent relation of hed, chest, and hips to each other, leaving out of consideration the shoulders and feet except as these may be involvd un¬ avoidably, touching briefly lateral deviations of the spine, and speaking as definitly and practically as possible of those accentuations of the normal curvs of the spine which are 2 so common and which affect so profoundly the general helth and the personal appearance. For convenience the term posture will be used in this limited sense. There is a practical value in diverting attention from the shoulders. Over-emfasis upon the correction of round shoulders has resulted in many distorted spines. To the most casual observer the conformation of the spine and consequent position of hed, chest and hips with relation to each other is constantly changing. In the flexi¬ ble bodies of children this relation is especially variable. Whether they sit or stand their posture changes frequently. This is normal and desirable, but observation also reveals the frequent recurrence of certain postures, and it is well to remember that this marvelous flexibility of children’s bodies decreases from the moment of birth. Habitual posture be¬ comes fixt. For this reason we must know the extent to which it affects helth, and, thru helth, efficiency. That there is a relation between helth and efficiency on the one hand and posture on the other has long been notist by those who look at men and women in large groups. No one denies the more frequent occurrence of erect bearing with broad chest and shoulders among the more efficient members of a community or its comparativ rarity in groups whose physical capital yields poor returns in the commercial and industrial world. The coincidence of lung trouble with defectiv posture has become traditional, and tho by no means as invariable as it has been thought to be, it is yet frequent. No less frequent than the sunken chest of the con- sumptiv, perhaps, is the hollow back and the relaxt abdomen of the nervous dyspeptic. In girls and women chronic back¬ ache and periodic pain not seldom yield to no other treat¬ ment than a readjustment of the vertebral colum, a correc¬ tion of posture. Basic Ideas Underlying Posture-Training It may possibly be argued that, except in the last case, these are instances of coincidence which are not proved to be cause and effect. Some freshening of one’s knowledge of human anatomy and physiology, however, will make such cause-and-effect relation clear and at the same time 3 result in the necessary basis for arguments that are to fol¬ low. Recall the spine as a colum of twenty-four vertebrae resting on the wedge-shaped sacrum which is held firmly between the two hip bones, surmounting it the skull, at- tacht to it the twelv pairs of ribs. Recall that the vertebrae are separated by discs of cartilage and are bound together pretty firmly by ligaments, that not much motion is permit¬ ted between any two, but that the slight motion at each joint results in a flexible colum capable of bending in all direc¬ tions, capable also of some twisting or rotation. Recall that the joint between spine and skull is a freely movable one, that the hed may be easily balanst upon the spine or may as¬ sume a position in which its whole weight bears to bring the upper spine forward, that the twelv pairs of ribs are set on the twelv dorsal vertebrae at an angle so that viewd from the side they are seen to slope downward, that the joints between ribs and vertebrae are but slightly movable so that the posi¬ tion of the spine affects directly the position of the ribs. Recall what are spoken of as the normal curves of the spine —convexity forward in the cervical region, backward in the dorsal region, and forward again in the lumbar or waist region, with the sacrum effecting a second backward con¬ vexity below the waist. Finally let us realize that the posi¬ tion of these bones with relation to each other is maintaind by muscular activity directed against the force of gravity. We know that man alone of the vertebrates walks with spine erect, that the erect posture does not characterize man’s near relations among the apes nor the newborn of his own species in which it is acquired months after birth, yet we rarely reflect that its maintenance is a feat of considerable difficulty or that upon it his survival depends. Nature’s Provision for Correct Normal Posture The arrangement of muscle groups by which this flexi¬ ble colum, man’s body, is made to balance itself upright upon a small base, the feet, is less easily pictured than is the relation of the bones of the skeleton. Figure l 1 , adapted from Hough and Sedgwick’s Human Mechanism, diagrams it ad¬ mirably. A moment’s study makes clear the action of 'Used here by courtesy of’Ginn and Company, Publishers. 4 groups A and D, E, B and H. Groups F and G must be delt with more slowly. Group F represents the muscles forming the abdominal wall. Test their action by bending backward and noting the hardness of these muscles when they con¬ tract to prevent the trunk from falling backward. Again, without tipping backward, contract these muscles and draw in the abdominal wall. Does this increase or decrease the lumbar curv of the spine? What effect has it upon the ab¬ dominal organs? Group G represents what are known as extensors of the spine. These lie in two groovs on either side of a central row of spinal projections and when they are contracted in the lumbar region can be felt as two hard, rounded colums. Place the hand over the hollow of the back and bend forward from the hips. Notis how these two colums of muscles thicken and harden. Standing erect, hol¬ low the back excessivly and feel how these muscles harden and stand out. Contract the spinal extensors higher up. Does this flatten or increase the dorsal convexity? Does it raise or lower the ribs? Let the hed droop forward. Raise it and pull in the chin. Notis the relation between position of hed and position of chest. In ways like this we can demonstrate that contraction of the abdominal muscles decreases the lumbar curv and raises and supports the abdominal organs, while contrac¬ tion of the spinal extensors at the waist increases the lumbar curv and draws the hips backward. Activity of the neck muscles and those of the upper spine determin the position of the hed and chest. The Hygienic Import of Posture and Its Renewd Demand for Attention Very evidently the conformation of the spine depends upon the degree of contraction in each of these muscle groups. Evidently the relation of hed, chest, and hips to each other depends upon conformation of the spine. Lung capacity and breathing movements depend upon position of the chest. It may also be rememberd that breathing movements not only pump air into the lungs but blood into the hart, and that this aspiration of the thorax is the one o constant means of moving lymph along the lymph tubes and freshening the environment of every cell in the body. By pumping blood into the hart it is to be understood that we mean hastening its return from organs lying outside the chest-cavity thru the suction of breathing movements. Activ muscle-masses like the arms and legs are not depend¬ ent upon such force but organs suspended in the mesentery and those lying deep in the pelvis suffer impaird circulation when activ breathing movements are interfered with. So markt is the effect of deep breathing upon circulation in the pelvic organs that its use has formd a prominent part of successful treatment in certain cases of their too prolongd congestion. The relation of posture to helth is truly one of cause and effect. Any posture which compresses the viscera re¬ sults in deprest vitality. Exactly such an effect results from the usual sitting posture of sedentary occupations. Its re¬ verse is seen in the physical stamina and longevity of long¬ bodied individuals. It is said that in men of power the trunk is notably long in proportion to length of lim. Anything which gives maximum capacity to both thoracic and ab¬ dominal cavities with consequent space for the growth and free activity of visceral organs is surely of first importance in the care and training of children. It is not assumed that the importance of posture is a re¬ cently discoverd fact. For years school furniture has been designd, systems of writing introduced or discarded, and gymnastics relied upon in the attempt to cultivate correct posture in children. It is assumed, however, that posture- training can yield better results than it usually has done; that we need to sum up our whole experience and to act in the light of it. And it is believd that with a clearer idea of what constitutes faulty posture, what causes lie behind its formation and the recognition that posture-training means posture-teaching with the same use of pedagogical principle and device that is habitual in other teaching, our efforts will not be so frequently wasted as they have been in the past. 6 Correct Posture and Its Tests Let us define good standing-posture as that in which the curvs of the spine and the consequent position of hed, chest, and hips make possible the freest activity of visceral organs and the maintenance of upright balance without un¬ due muscular effort. This will mean that the body is drawn up to nearly its fullest hight; that none of the curvs of the spine are accentuated; that the chest is lifted, but without constraint; that hed, chest, and hips are in a vertical line, (see Fig. 6) ; that shoulders and arms hang easily. This is not a gymnastic position; it is not intended to be. While taking gymnastics children may be required to extend the arms vertically downward from the shoulders with palms toward the body, but the greatest care is necessary to avoid the stiff, crampt carriage of the shoulders which comes from calling attention to them. Generally when hed, chest, and hips are properly adjusted, the shoulders will, if permitted, hang easily in the right position. Nothing is worse than to say to a class, “Throw back your shoulders.” It is of the utmost importance that some definit and easily applied test for good posture should be understood by teachers and pupils. Jessie H. Bancroft in her recent book, “The Posture of School Children,” describes such a test and the methods and results of its application in the schools of New York City. It seems difficult to over-estimate the value of her simple device. The book is profusely illustrated, makes a thoro study of the whole subject of posture, and will be an inspiration to every teacher who reads it. Her test consists in estimating the position of hed, chest, and hips by dropping a vertical line from the front margin of the ear. This line should coincide with or parallel the long axes of hed and trunk and should fall in front of the ankle. A con¬ venient way of making the test is to place oneself in position to get an accurate side view of the pupil and hold at arm’s length a window stick to represent the line. One then notes deviations from the vertical in the three main segments of the body: hed, trunk, and legs. A cord and weight could be used, but swinging of the pendulum prevents the rapid work necessary with a large number of children. This test is easily comprehended by children, is sufficiently accurate for 7 schoolroom use, and can be made rapidly. The actual rod or line should be used until the children thoroly understand the test. By that time the teacher’s eye will be so traind that she can stand at a distance and sight the pupil with vertical pencil, as is done in drawing from the model, or even the pencil may be dispenst with. The practical value of the test is seen in the ease with which it reveals the typical deviations from upright adjust¬ ment. Such mal-adjustments are usually groupt as follows : Types op Depectiv Posture 1. Rare cases which show, not a simple accentuation of normal curvs, but a fixt angular deformity of the spine. These are probably tubercular and are cases for the physi¬ cian, not the teacher. They should not be meddled with. 2. The commonest of all defectiv postures. (See Fig¬ ured). The trunk from the waist up sags backward; the chest sinks; the hed droops; the hips are too far forward. The dorsal curv is accentuated, the lumbar curv somewhat increast. The value of the Bancroft test is evident here, for while clothing conceals the curv of the spine the long axes of hed, trunk, and legs are well made out and are seen to form not a vertical line but a zigzag. This is the position of relaxation, one in which the muscles have transferd a part of their work to the ligaments. It is sometimes spoken of as the fatigue posture. By reference to Fig. 1 and by recalling the simple ex¬ periments suggested for finding the effect of contracting different muscle groups, it may be seen that we need here contraction of abdominal muscles to reduce the lumbar curv and bring the upper trunk forward, while the dorsal curv will be reduced and the hed and chest lifted by activity of the spinal extensors in the neck region. 3. A less common type (see Figure 3), except in classes where mistaken methods of teaching have been in use. Both hips and shoulders are thrown backward. The back is hollowd excessivly. This posture is most often induced by the command, “Throw back your shoulders;” some¬ times by an exaggerated effort to lift the chest. Here the need for abdominal contraction is evident. Often a definit 8 effort to relax the spinal muscles is in order. This is a dif¬ ficult position to correct. 4. A defect less common among children than among adults. Insted of accentuation of curvs, their elimination is almost accomplisht; rather, all are merged into one. The chest is deprest, both hed and hips are forward, the hollow of the back is obliterated. In children this posture is often- est seen when they slide forward in their seats and sit on the lower part of their backs. Correction will deal with the spinal extensors thruout their whole length. From hed to sacrum they have been stretcht and relaxt. They must be toned up and shortend. Very commonly, in addition to the mal-adjustments re- veald by the Bancroft test, there exist lateral deviations. These frequently but not always show in uneven shoulders and hips. Very slight lateral deviation is so common that by some it is considerd normal. Serious deviation calls for the attention of a physician. Parents should be urged to get the advice of a specialist. Without that advice the teacher should forbid twisting and lateral bending of the trunk in gymnastics and should encourage in all ways stretching the spine to an erect position. Causes of Defectiv Posture Causativ conditions fall into two groups: (1) those that affect general helth, fatigue being their most common symp¬ tom, and (2) those that form habits. Proportions of the bony skeleton, length of ligament, organic disease, and nu¬ merous other factors do enter into the formation of defectiv posture, but if the teacher keeps constantly in mind fatigue and habit he will have a good working basis for posture¬ training. To avoid fatigue and to form correct posture hab¬ its : these constitute the problem to solv which a teacher must bring to bear all he knows of hygiene and pedagogy. In his teaching of hygiene and in the hygiene of his teach¬ ing lie valuable aids. (1) Fatigue as a cause of defectiv posture. — The causes of fatigue may be found in the home—in dietary errors and habits of sleep, in work unsuited to growing children, like the carrying of babies and the lifting of other 9 hevy loads. Physical inheritance determins vitality in some cases. Diseased tonsils, decayed teeth, defectiv vision and hearing must not be overlookt. Adenoids in themselvs so impede respiration that they are a potent cause of defectiv posture. Rapid growth is another condition to be reckond with. Or, causes of fatigue may lie within the school—in the furniture, in the lighting, in lack of fresh air. Askt to name the one thing which operates most powerfully to pro¬ duce fatigue-posture the writer would name schoolroom air ; and she would venture to predict that the time will come when we shall abandon our elaborate and expensiv ap¬ paratus for preparing and distributing air to our school¬ rooms and return to simpler and more helthful methods of ventilation and heating. We must remember what muscular activity the erect posture requires. We cannot discharge our responsibility for preventing muscular fatigue by putting in adjustable seats, or even by spending ten minutes a day in gymnastic ex¬ ercise. There is at present little disposition on the part of educators to treat helth responsibility thus lightly. This as¬ pect of posture-training presents only an added reason for doing what is alredy being done in many schools, what is lookt forward to by all—the correction of nose, throat, and eye defects; the improvement of helth conditions in the home by visiting nurses or parent-teacher organizations, and the provision of a school environment in all ways favorable to the normal growth of children. (2) Habits as causes of defectiv posture .—Rarely or never should effort be directed to helth maintenance only. A rough statement, but sufficiently accurate for our pur¬ poses, is that muscles relax because they are tired, and just what ones relax, to what extent they relax, thus, just what posture results is determind by conditions largely within our control. The erect posture is maintaind by well-dis¬ tributed muscular work; the burden falls on no one group; but when bending forward over book, woodwork, or piece of sewing, the full weight of hed and chest falls upon the group of spinal muscles; these partially relax and the spine becomes rounded. The muscles may develop consider¬ able strength hut they have been stretcht; the check- 10 rein is not short enough to hold hed and chest erect. The dorsal curv is accentuated and the lumbar muscles reliev themselvs by throwing the trunk backward to balance the weight of the drooping hed. We have the posture described under Type 2 in our list above. Abdominal muscles become weak because in neither sitting nor standing does the bent posture employ them. Posture-sense becomes perverted and gives no intimation of the existing mal-adjustment. Ulti¬ mately some ligaments become stretcht, others shortend, and there results an uncomfortable sense of the grotesque when the spine is properly curvd and the hed, chest, and hips properly adjusted. This is a typical example of permanent defect resulting from habit. Frequently as here the habit is responsible both for the muscular fatigue and for the direction and extent to which relaxation takes place. Thus the bent sitting posture described tends to perpetuate itself and to induce defectiv standing posture as well. Sometimes the bent postures are inevitable (for the use of books and pencils cannot be abandoned) but often they are not. If vision is defectiv or light insufficient they are accentuated inevitably. If desks are too low or seats too high to permit the feet to rest flat on the floor, anything ap¬ proaching the erect posture is extremely difficult. Some¬ times badly adjusted suspenders or hose supporters make difficult the erect posture; sometimes hevy, ill-fitting clothes. Again, a slouch may be the result of a mental attitude, in¬ difference to school work, or devotion to a fashion. Un- doutedly no two cases ar due to identical causes. Suggestions for Posture-Training These bad posture-habits must be broken up and good ones formd. Direct instruction naturally belongs to the period assignd to physical training, but attention to posture must not be confined to that period. While the teacher need not place too great faith in his own analysis, the attempt to account for individual cases will make his work more intelligent and forceful. And he need not be greatly disturbed by feeling thus inadequate to accurate individual analysis, for three aims must shape his 11 efforts with all children. These are—(1) to maintain the tone and elasticity of all trunk muscles, (2) to preserv the sense of correct posture in those who have not lost it and to restore it in those who have, (3) to preserv the habit of cor¬ rect adjustment of the hed, chest, and hips where it has not been lost, to form it where it does not exist. In recalling means to these ends the attempt is here made to be merely suggestiv for the most part, emphatic only where special need is suspected. (1) Cultivation of muscular tone. —This of course in¬ cludes the whole of hygienic practis. It suggests particularly an abundance of outdoor air while children are studying and frequent relief from the strain of sustaind position by brief exercises in standing position. It calls for a vigorous use of the trunk-muscles in sports and gymnastics; the choice of movements which involv bending of the trunk, twisting it, stretching it; movements, too, that induce deep breathing, that are vigorous and stimulating, with care to avoid over¬ fatigue. The suggestion of definit games and exercises is unnecessary. Furniture that supports the spinal muscles is essential and insistence that it be utilized in this way by reasonably erect sitting posture is a valuable means of avoiding fatigue. Children should sit well back in their seats and make use of the support thus furnisht by leaning back, rather than forward upon their elbows, whenever such a position is consistent with their occupation. Remember that a crampt or slouching posture means actual muscular strain. (2) Cultivation of the posture-sense .—The sense of cor¬ rect posture might be termd “the feel of it.” We recognize the position of any part of the body by sensory stimuli com¬ ing from the muscles and joints involvd. A perfectly nor¬ mal child knows by these stimuli when the parts of his body are so adjusted that what we have termd correct posture re¬ sults. The child who has acquired one of the bad habits of standing described above, if directed to take an erect pos¬ ture, may be unable to do so, for he has forgotten the mus¬ cular sensations which accompany it. He feels uncomfor¬ table and awkward and makes either too great an effort, not enough effort, or an altogether wrong one. The normal 12 child feels comfortable and right in the posture which is best for him. We want all children to feel more comforta¬ ble in a correct posture than in any other. Such an end is impossible without repetition, for the unaccustomed is never comfortable. Only when muscles and ligaments act in ha¬ bitual fashion to maintain the desired poise does such be¬ come thoroly comfortable. This cultivation of the posture-sense should mean giv¬ ing first a distinct visual image of the correct adjustment of chest and hed, spine, and hips, for effort has been wasted repeatedly by asking children to do what they did not under¬ stand. Have we always known ourselves just what we wanted when we askt them to “straighten up”? Some training of the eye to recognize the fundamentals of bodily poise comes logically at the beginning of posture-training. It may be attempted by selecting the best and criticizing the worst posture-habits of the children, but there is no pleas¬ anter or more certain way of training the eye than by study¬ ing those figures of courage and strength which have been painted or done in marble or bronze by men who knew and loved physical perfection. Many prints and casts commonly found in public school bildings could not be better chosen for the purpose: St. Gaudens’ Lincoln—the standing figure; Guido Reni’s Apollo and the Muses, and his Aurora; the Vic¬ tory of Samothrace. So splendid is the poise of the Victory that no other figure with parts intact could speak with half its force. The Lincoln is especially valuable in showing how perfectly erect the human form may be in half relaxt position. Apollo and the Muses shows the figures strong, sturdy, buoyant. Greek sculpture is full of inspiration. If one has not learnd to love it before, joy will come when it is studied with this end in view. Both teacher and pupils must come to recognize instantly the beautiful and natural erect¬ ness of strength and courage. Van Dycke’s children and Gainsborough’s men and women will appeal to girls, pic¬ tures of athletes and heroes to boys. When erect posture is seen to be associated with joy and strength and courage it becomes interesting. The children can search for pictures showing the erect figure, and bring these in for the judgment of the class. Attention should be cald especially to the posi- 13 tion of hed and chest where it is fine, for attention to this in practis later will often correct the whole body poise. The vertical line test may now be explaind. When the body is strong, erect, and buoyant, as in the pic¬ tures just mentioned, the hed is in vertical line with the trunk and this sags neither forward nor back¬ ward. The collapst zigzag line that results from weak¬ ness may be shown. To bring the visual concept into terms of the child’s own figure, there is an ex¬ cellent wall chart publisht by the American Posture League. It shows a child in modern costume standing in the fatigue position, and again in the hollow backt position. The use of this chart in every schoolroom would clarify and make definit the visual image essential to intelligent effort; and, furthermore, it would serv the valuable purpose of a stand¬ ard. Why should teachers expect to cultivate good habits of standing any more than good habits of writing without a standard model? There is the same danger that in passing from grade to grade children will form no habit or even have good habits destroyd because of variation in demand from different teachers. Now, with the visual image of erect posture vivid in each, with admiration for it kindled by some association or favorit picture, its translation into terms of the muscular sense may be attempted. Let the children rise and each show his idea of a correct standing position. Many will be able to achiev the desired adjustment at once; some will not, and the teacher will have reacht the most difficult part of posture training, for in one way or other every child must be brought to reproduce the posture shown on the chart, to get the muscular sense of easily erect posture. Those who are successful at once should have their success proved by the vertical-line tect and be placed in an aile by themselvs to form the nucleus of an honor squad, to which others are added as they demonstrate their right to it. The others must be helpt to the muscular sense of a good posture in future gymnastic periods with all the ingenuity at the teacher’s command. A good model for the class and individual rather than class corrections are essentials to success. Only a few class directions ever can be given safely in working for ad- Fig. 1 Fig. 2 Fig. 3 Fatigue posture The over-corrected position Fig. 4 , Fig. 5 Fig. 6 Stretching out accentuated curves Arm-stretching upward Correct standing position 16 justment of the spine. All types of defectiv posture are present in a class. A suggestion which is effectiv in the correction of one will only accentuate another, and the children have not the discrimination to recognize where each suggestion is intended to apply. Very often manual correction is the quickest and most effectiv means of getting the desired result. In giving this and in the individual di¬ rections which must be given where manual correction is impossible it is hoped that the mechanism of the standing- posture alredy explaind and illustrated by diagram will prove useful. For bringing a posture of Type 2 (Fig. 2) into vertical adjustment the suggestion may be given to “contract ab¬ dominal muscles” or to “pull in the belt in front.” Or one hand may be placed over the belt in front, one between the shoulders, and pressure exerted by the two hands in opposit directions. This method is well illustrated by Miss Ban¬ croft’s book. If at the same time the child pushes upward with the hed, the spine often is brought to its normal ad¬ justment. Sometimes a strong effort to lift the chest will do away with the objectionable backward sag of the upper trunk. If this results in an over-corrected position, atten¬ tion had better be diverted to the hed and a vigorous reach¬ ing up with the crown of the hed directed. One of the few valuable class suggestions is to stand to the fullest possible hight without stiffness. Perhaps the most difficult posture to correct is that of Type 3. Manual correction here is almost impossible. The trouble lies in over-contraction of lumbar muscles. What must be secured is partial relaxation of these with a firmer tone in the abdominal group. Localized relaxation is always difficult to get. It is possibly best obtaind by directing at¬ tention elsewhere. The arms may be stretcht sideways as far as possible, or the position shown in Figure 4 may be used. In it the hands are claspt directly on top of the hed, not on the crown, and are then prest down on the hed while the hed is pusht upward strongly against the hands. So complete is every effort to push high up against the hands that the weight is lifted from the heels and with this cen¬ tering of every effort upon an upward reach against an ob- 17 stacle, the lumbar spine usually relaxes enough to reliev the extreme curv. If the hight thus gaind can be kept while arms and shoulders are allowd to drop easily, correction is accomplisht. It remains only to remember “the feel” of the corrected position, which can then be more quickly assumed a second time. Sometimes if the body is flexible and the cloth r g per¬ mits perfect freedom the lumbar relaxation can be accomp¬ lisht by stretching the arms upward. (See Fig. 5.) In this case everything should give way from the heels up to allow the fingers to reach the highest possible point. Reaching up with the hed, arms hanging at the sides, sometimes helps, but these cases of hollow back must never be told to lift the chest or push it forward, for such effort always increases their defect. Occasionally attention directed to contraction of abdominal muscles counteracts that of the lumbar group. These suggestions are offerd in what is believd to be the or¬ der of their usefulness. Each teacher must work out his own methods, however, and must search for the right word in giving correction and encouragement. Now and then a Type-4 posture is discoverd. The key to its correction is a lifting of the chest, which may be ex- cedingly difficult to achieve, but without which correction is entirely impossible. Effort can sometimes be directed by placing a hand upon the child’s chest and asking him to push upward and forward against it. Or he may place his own fingertips upon the center of the sternum, allow the chest to sink as much as he likes, then push hard upward and forward against them. Or he may be told to hollow the back and to pull back the hips, but such a suggestion should never reach the class as a whole. Manual correc¬ tion may be given. In all corrected posture pupils must be convinst that their personal appearance is not conspicuous, that it does not look as it feels, and that the awkward feeling will dis¬ appear. If each day a few minutes is spent in this posture work, one by one pupils join the ranks of those who have trans¬ lated their visual image into one of muscular sense, who can 18 assume at will a standing posture in which visceral activity is unimpeded and muscular tone conservd. Not very much effectiv gymnastic work can be given until this point is reacht, but an abundance of physical ex¬ ercise of the most interesting sort can and should by all means be given daily, either preceding or following the brief posture drill. This work on posture should be earnest and concentrated, but it should not be allowd to crowd out that vigorous free movement which is essential to break the school periods of sustaind sitting. (3) Formation of posture-habits .—When hed, chest, and hips can be voluntarily adjusted in conformity with the standard, there logically follows the establishment of this ad¬ justment as a habit—a distinct problem calling for its own methods. Three stages in the formation of posture-habits. —We cannot speak of a correct posture-habit as being establisht until (1) a child maintains the vertical line positions thru all activities in which it easily is possible, such as walking, marching, sitting, standing for recitation, etc.; (2) until he maintains the desired adjustment under conditions of in- creast difficulty; (3) until he returns to this posture invari¬ ably after activities which make it impossible; until, in short, the whole bodily mechanism—bones, ligaments, nervs, and muscles—become thoroly adapted to its maintenance. If defectiv posture be a matter of long standing, structural modifications have taken place and its correction involvs the stretching of some ligaments and muscles, the shortening of others, the development of more strength in some muscle groups, the modification of nervous response. Such changes require time. When it is rememberd, also, that man has not yet become perfectly adapted to the upright posture, that he maintains it against constant odds, it may be perceivd redily that a theory of posture-training may underlie logically all directed exercise during the growing period. Other results from muscular activity should be in view but posture-training should not be lost sight of. These stages which mark the acquisition of the desired habit are what might be expected and to a certain extent they may determin the emfasis of effort. We should expect 19 the maintenance of correct adjustment first in those activi¬ ties in which mechanical difficulties are small—obviously in sitting and standing rather than in gymnastics or dancing; also first in those activities which least divert attention from posture—in marching, then, before success in dumbells or wand exercises. Since the simplest problem is one of cor¬ rect posture while sitting and standing, we should emfasize this from the first. Rediness for the beginning of school, for the beginning of a recitation, for singing, for dismissal may constitute posture drill, may form opportunities for en¬ couragement, correction, and that imprint from repetition which results in habit. Since the second step in difficulty is correct adjustment during simple and more or less auto¬ matic movement, we should expect success next in the pass¬ ing out at recess or dismissal, in moving from classroom to classroom, and in marching exercises where attention is partly engaged by the details of tactics. Much might be said on the value of intelligently conducted marching; but only a brief discussion of it can be given here. The use of marching in posture-training .—-Marching is everywhere practist in public schools. It is a necessity in moving classes without confusion. As a part of physical training it is felt to possess hygienic, disciplinary, and some¬ times recreativ effects. Children enjoy it on the whole, prob¬ ably often find it restful, and in marching the subordination of the individual to his group of course is achievd. These reasons probably figure in the minds of teachers, but not many realize that marching is the one means of cultivating habitual gait or that it is one of the very best means of form¬ ing the habit of erect posture. Much marching is flagrantly slouchy and when we look carefully beneath the general ef¬ fect of trimness in what is cald good marching at the boys and girls in line we rarely see evidence of attention to indi¬ vidual bearing. The average observer, the average teacher, is not sensitiv on this point. In his estimation straight lines, even spaces, step and rhythm come before erect posture, the adjustment of the individual to his group before adjustment of the body segments to each other, if, indeed, this ever re- ceivs attention. 20 Standards of marching have been false in the extreme. Hours have been spent in teaching young children to keep step and success has come with the sacrifice of all lightness and spring in the gait. At lavish expenditure of time elab¬ orate evolutions have been practist and results admired when not one-fourth of the children in the intricate lines knew how to carry themselvs. A more clear-eyed consid¬ eration of the individual would bring markt changes in methods of teaching marching with results of permanent value, an habitual carriage which is economical, stimulat¬ ing, self-respecting, and beautiful. Before even plain marching can be done excellently well, many details must receiv attention—step, rhythm, in¬ dividual bearing, spacing, alignment, the start, the halt. Neither children nor adults can keep all of these in mind without practis. Each must be emfasized for a time, until automatic or partly so, then new details added as pupils are able to keep them in mind. Drill on rhythm must come first because uniform rhythm is the essence of marching, but if this is set for the naturally brisk pace of children it will not require prolonged and exclusiv attention. It should be lively because nothing conduces to heviness and general relaxa¬ tion of posture in children more than a slow rhythm, and it must be remembered that what would be reasonably brisk for the long legs of adults may be painfully slow for the short legs of children. Naturally rhythm is proportional to length of lim. Music for marching should be playd lightly. Thundering music meaps a thundering step. When rhythm is establisht, first attention should be given to individual bearing. Marching should frequently be preceded by brief posture drill and details of step, alignment, spacing, etc., should be introduced only as they can be without loss of the erect posture thus acquired. Individual bearing should be referd to frequently. Marching tactics should be kept sim¬ ple until an erect bearing is nearly automatic. Thus taught marching becomes a most effectiv means of posture-train¬ ing. Other means are extremely useful and at times neces¬ sary. Marching by no means supplies conditions of great difficulty either mechanical or nervous for the maintenance 21 of what has been described as a standard adjustment of the body segments. Abdominal and spinal muscles and those of the neck rather easily maintain a vertical position of the hed and trunk in walking, and simple tactics do not absorb the attention. Gymnastics in posture-training .—Desired posture is not fixt until it is retaind during movements which absorb the attention, even during movements which offer mechanical difficulty. Such conditions are supplied by gymnastics. Again, if long standing defectiv posture is to be corrected some ligaments and muscles must be stretcht, some shortend and strengthend. This work can be done only by gym¬ nastics. The value of gymnastic exercise in posture-training has been recognized for more than a hundred years. Its use is perfectly logical. It rests upon well-known anatomic and psychological principles and its efficiency has been demon¬ strated so many times that there has grown up a rather blind faith in it, a feeling that in some magical way an awk¬ ward gait, bad sitting and standing postures, and round shoulders especially must disappear with the practis of gym¬ nastics. This effect is expected, among others, when gym¬ nastic exercise is introduced into the school curriculum. Observation proves, however, that no such magic and in¬ evitable effect results. Muscular coordination improves in¬ variably, muscular development usually, habitual posture sometimes. This almost reverses the desirable order and calls for more intelligent methods of teaching. In games and dancing we have unlimited means for de¬ veloping muscular strength and coordination. In so far as these exercises increase lung capacity and general vitality they influence habitual posture favorably, but they are ill- adapted for the systematic posture-training so evidently needed. Gymnastics are admirably suited, and there is a growing belief that they must be made to serv this end or forfit their place in physical training procedure. Their use for recreation and for directly hygienic purposes is a make¬ shift, For posture-training, on the other hand, they are a most powerful instrument whenever individual exercises are selected with this end in view and their execution super¬ vised with strict attention to form. In such selection, emfasis will be placed upon move¬ ments which train and strengthen the spinal muscles, those that develop abdominal and side waist muscles, and those that lift the hed and elevate the ribs. The daily lesson will not omit such movements, tho foot-placings and arm- stretchings may have to be cut short. In the choice of par¬ ticular trunk movements, the teacher will be guided by their immediate effects upon the adjustment of the spine. For example: a trunk-bending forward draws the hips back¬ ward and calls into action the spinal extensors from the sacrum to the hed; and if warning is given not to carry the trunk-raising which follows it too far, it exerts a most fa¬ vorable effect in correcting the fatigue posture. It is there¬ fore an exercise which should be used liberally and early in posture-training. On the other hand, trunk-bending back¬ ward, unless good posture-control is alredy establisht, throws the hips forward and the upper trunk backward, de¬ presses the chest and causes the hed to be thrust forward. This being true, the latter movement will be introduced very much later in gymnastic work and discontinued if after reasonable effort from pupils and teachers it cannot be exe¬ cuted without these faults. In the choice of arm and foot movements, their effect upon the position of the hed, chest, and hips will not be lost sight of. For example, in arm¬ stretching forward there is a tendency for the upper trunk to be displaced backward as it is in the most common type of the defectiv posture, while the tendency in arm-stretch¬ ing sideways is to correct this very defect in spinal adjust¬ ment, Obviously the latter exercise should be emfasized and the former shund until correct adjustment is well under con¬ trol. Then, added control is secured by introducing just this element of difficulty. Stretching the arms vertically upward is often impossible without inducing an exaggeration of the posture seen in Figure 2. An execution of this apparently simple movement while maintaining hed, chest, and hips in vertical relation marks the perfection of posture control. To require the repetition of this movement when a majority of 23 the class find it impossible not to exaggerate a deplorable defect only increases the defect and makes it more perma¬ nent. Therefore, whether poor form in this exercise is due to restriction from clothing, tight ligaments, or tense mus¬ cles, it must not be introduced until the erect posture can be held during arm exercises which present less mechanical difficulty. Difficulties, dangers, and precautionary suggestions .— The teacher ambitious for success in posture-training and determind to secure excellence in gymnastic exe¬ cution should not be appald at the number of de¬ tails that require attention. In so simple an exercise as arm-stretching sideways, there is the direction of the extension, its rhythm, force, and accent, hight of the arms, the position of the wrist and fingers, the po¬ sition of the shoulder blades, of the hed, chest, and hips. The location of town or county boundaries is hardly defined more accurately than is a gymnastic movement. In an ex¬ ercise which consists of a combination or succession of movements multiplication of details is proportional to its complexity. Perfect execution results only from prolongd training. Faults innumerable are presented by the perform¬ ance of a class. Attention to all of them is neither possible nor desirable. This is well enough understood. What needs to be insisted upon is that the most obvious faults are often not those which should receiv first attention. The impulse, of course, is to correct first those which injure the spectacu¬ lar effect—the uneven file, the arm out of line, the too long or too short step, a failure to respond as quickly as the rest of the class. Lookt at from the standpoint of benefit to the individual these are corrections which may well be left until later. A pupil should be permitted, helpt, urged to hold the main segments of his own body in line with each other be¬ fore he is askt to occupy that particular spot on the floor which will bring it into line with half a dozen other bodies, and of course it is important that he execute a movement in correct form even if he is a trifle slow about it. Nevertheless the teacher’s impulse is strong to call attention to the ob¬ vious even at the expense of the valuable. It is responsible for the performance so admired by undiscriminating spec- tators on field days and at gymnastic exhibitions, and for the failure of gymnastics to improve the habitual posture of school children. Equally responsible, perhaps, is the tendency to have gymnastic movements follow each other rhythmically before they have been perfected at command. In giving each move¬ ment at command the attention of teachers and pupils is centerd upon one thing at a time. Faults are more easily avoided, more easily detected when they occur, more promptly corrected, and repetition of any detail of the ex¬ ercise is more easily varied to meet the needs of the class than is possible when music or counting carries the move¬ ments along thru a series of repetitions. In gymnastics at command we should expect to see finer form in execution and as a matter of fact we usually do. Since it has been demonstrated that poor form in gymnastic execution coun¬ teracts other efforts in posture-training, it becomes vital to delay transition to rhythmic gymnastics until posture-con¬ trol is well establisht and to keep rhythmic gymnastics sim¬ ple enough to prevent any relapse into defectiv posture habits. The vertebral colum is the central supporting structure of the human body. Its correct adjustment should be made the central aim in gymnastic teaching, for only thus can this form of exercize make its own distinctiv and indis¬ pensable contribution to physical training. Permanent establishment of posture-habits ,—When the sense of correct vertebral adjustment has been made a part of innumerable motor concepts, when the trunk muscles have become strong enough to hold such an adjustment un¬ der the mechanical difficulties of many gymnastic positions, there remains but one step to complete a permanent effect upon the child’s body. What has become habitual in march¬ ing and gymnastics must be made habitual in all of the other activities of physical training, and of life. It must contribute to the lightness and grace of dancing and to the beauty of athletic exercise. It must promote physical econ¬ omy and contribute to the dignity of all human intercourse. It must be made completely habitual. There must come that easy and flexible erectness in which the body refuses to 25 collapse tho it must bend, that involuntarily return to an at¬ titude expressing courage and strength which marks the best physical types. It is best to admit that this cannot be made the posses¬ sion of every child, that diseasd and exhausted parents, ig¬ norance, and poverty place handicaps from the beginning. Yet when we realize the plasticity of youth, and its wonder¬ ful vitality, and the marvelous permanent changes that are produced in plants and animals during the growing period by formativ forces, we must believ that persistent and in¬ telligent attention to this factor of human helth will yield more encouraging results than have been dreamd of. Strong and attractiv incentivs necessanj. —The most potent force in bringing completely habitual erectness is by all odds individual ambition. Without this a strong teacher may secure the desired results during physical training per¬ iods but no permanent erectness is possible. In stimulating ambition, methods, naturally, must vary with the age of pupils. Teachers accustomd to working with children know best what ones to use. Many of the most effectiv de¬ vices for arousing ambition in this direction are by no means distinctiv of physical training. The skillful teacher appeals to the desire for praise, for honor, for distinction, to the competitiv instinct, to the genuin desire for improvement which is found in every child. It is unnecessary to go into details concerning the use of honor lists, badges, ribbons, or the award of monitorships, leaderships, and captaincies for excellence in posture. Nor is it well to despise these de¬ vices. They are often effectiv and should be used wherever they will serv. Most consistent and equally desirable, is the require¬ ment of reasonably correct posture habits for athletic hon¬ ors. Probably this also is most difficult to require, so foren is it to common custom. Yet if sports are fosterd, as they assumedly are, for the symmetric development of the young boy or girl, and if teams are to represent, as they supposedly do, the best product of that fostering, nothing could be more illogical than to allow on pickt teams such specimens of one-sided development as are sometimes seen there. Very few methods would yield surer results in the improvement 26 of general bearing than such a requirement. It would af¬ fect directly all adolescents and indirectly all of their younger hero worshipers. If posture-training is to assume its legitimate place in physical training some recognition of it must be made in demonstrations and field-day programs, and this is not dif¬ ficult to arrange. No inconsiderable effort toward erect pos¬ ture was stimulated some years ago among the children of the training department of the Illinois State Normal Uni¬ versity by the award of ribbon badges as part of the annual field-day program. Presentation was made by the president of the school. To receiv a badge of distinction from so great a personage on so important an occasion assumed the proportions of a great honor in the eyes of the children. This was done before definit posture tests came into use; standards were entirely in the judgment of the teacher; but the plan was put before the children early in the year; rib¬ bons were awarded for improvement as well as for actual achievement; the number given in each grade was not too great and not too small to be stimulating; and results proved the scheme most worth while. A “review of troops” before judges of distinction may well form part of the field-day program. The very fact that by the judges, at least, this marching will be viewd with an eye to individual bearing will result in effectiv effort on the part of both teachers and pupils. A brief setting-up drill given in connection with the review with the purpose of each announst on the program will emfasize still further to parents and to the public the value of posture-training. At- tractiv suggestions of military performance are by no means desirable, nor are they necessary; but the recognition by military authorities that posture is intimately associated with physical endurance and practical efficiency should es¬ cape no one, and their methods of cultivating an erect bear¬ ing may well be studied. In competition between grades, first, second, or third place in posture maintenance should give the same number of points as first, second, or third place in track or field events. Field days, however, come but once a year. More fre¬ quent recognition of posture-habits is needed both to en- 21 courage effort on the part of the children and to secure for them the help which comes from interest on the part of parents. The monthly report card suggests itself. If pos¬ ture-training is as valuable as has been argued in this paper, it quite deservs a place on the monthly report cards, and certainly thru them it can secure the respectful attention of parents. Miss Bancroft’s book on posture contains a dis¬ cussion of the system of grading which is used in the New York City public schools, with an account of the very grati¬ fying results which have come with its use. This is well worth the attention of any one interested in posture. So valuable is the help of parents in this as in other phases of school work that every means should be taken to interest them and to make them intelligent regarding this factor in the helth of their children. Parents have sole control over many potent causativ conditions: general nutrition, defectiv vision, unsuitable work, clothing, adenoids, are some of these. Obviously without effectiv cooperation from parents, those cases of de¬ fectiv posture which are due to unhygienic home conditions cannot be reacht. Unfavorable, also, is the misdirected nag¬ ging of parents who are interested in the posture habits of their children but who are utterly ignorant of helpful cor- rectiv methods. There is every reason for bringing the sub¬ ject of posture into the programs of parents’ clubs and there treating it with all of the thoroness possible under such con¬ ditions. In these and in all other ways possible there must be created the incentiv of popular demand and expectation. Not much thought has been given to this phase of posture¬ training; but it is needless to multiply suggestions. The problem can be workt out better by those who are in daily contact with children than by specialists. Little experi¬ mental proof is at hand but I firmly believ that with the in¬ troduction of effectiv incentivs to constant personal effort, much of the time now spent upon so-cald correctiv exer¬ cises can be turnd over to more recreativ and more directly hygienic forms of exercise. Formal gymnastic lessons bear the same relation to the cultivation of erect posture-habits that lessons in oral and written English bear to the cultiva- 28 tion of habitually correct language. They are just as neces¬ sary, and they are just as fruitless without constant incen- tiv to practis what is there taught. With a constant and powerful incentiv, surprising individual results have been shown within my experience upon even a dirninisht gym¬ nastic schedule. Summary .—I have tried to make clear in this paper the relation between posture and helth, to suggest the mechani¬ cal difficulties of the erect posture, to outline typical defects which result from these difficulties, and to indicate the mechanical principles which underlie their correction. I have suggested the necessity of developing definit visual posture-concepts as the first step in posture-training, and the translation of the visual concept into terms of muscular sense as the second step. After this, the formation of cor¬ rect posture-habits must procede thru practis under condi¬ tions of increasing difficulty, both mechanical and psycho¬ logical. I have tried to show the very great possibilities of posture-training in marching if it is taught with this end in view; to make clear the necessity for carefully pland gym¬ nastic work; but above all the utter futility of these agencies in correcting bad posture-habits when not supplemented by powerful motivs for improvement. Such motivs will be developt wherever teachers become interested in posture¬ training and this will be wherever they or their leaders can look, clear-eyed, thru the screen of accepted procedures and practises at the needs of individual children. :/V