Applied anatomy and kinesiology, the mechanism of muscular movement . f apparatus of special interest here is the pulley weightinvented by Dr. D. A. Sargent and found in every well-equippedgymnasium. Noticing that the weights used in German gymnas-tics, such as dumb-bells, wands, etc., are of use to develop theelevators of the arms almost exclusively, since their weight alwaysacts vertically downward, he tried to devise an apparatus bywhich one could give various degrees of resistance to the action ofdepressors, flexors, and extensors as well. The final result is a GYMNASTIC MOVEMENTS 109 comb
Applied anatomy and kinesiology, the mechanism of muscular movement . f apparatus of special interest here is the pulley weightinvented by Dr. D. A. Sargent and found in every well-equippedgymnasium. Noticing that the weights used in German gymnas-tics, such as dumb-bells, wands, etc., are of use to develop theelevators of the arms almost exclusively, since their weight alwaysacts vertically downward, he tried to devise an apparatus bywhich one could give various degrees of resistance to the action ofdepressors, flexors, and extensors as well. The final result is a GYMNASTIC MOVEMENTS 109 combination of a set of adjustable weights with three sets of pul-leys, placed shoulder high, overhead, and on the floor, meeting theneed admirably. Raising Arms Sideward (Swedish).—This is taken with palms downand the arms held a little behind the lateral plane, terminating atthe horizontal with the arms carried as far to the rear as object here is improved posture of the chest, gained throughadduction of the scapula? and some elevation of the ribs. The. Fig. 60.—Arms sideward, as taken in Swedish gymnastics. scapula is drawn back by the trapezius and the arm held up anddrawn back by the supraspinatus, middle and posterior deltoid,assisted somewhat by the infraspinatus and teres minor; this putsa tension on the two pectorals and thus lifts somewhat on the ribson the front of the chest. Taken in this way this is a perfectlynormal extension of the shoulder-joint, but writers on the theoryof Swedish gymnastics are inclined to urge the use of the rhomboidand latissimus, to flatten the back and help adduct the scapulae. 110 MOVEMENTS OF THE SHOULDER-JOINT They infer that the vertebral border of the scapula should be parallelto the median line, apparently forgetting that normal elevation ofthe arm to horizontal requires upward rotation of the scapula andcontraction of the lower serratus; action of the rhomboid andserratus together will do nothing but lift the scapula ve
Size: 1385px × 1805px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksu, booksubjectphysicaleducationandtraining
