Applied anatomy and kinesiology; the mechanism of muscular movement . position to work powerfully through more of the of simply pushing down on the pedals he foflows eachpedal and pushes it with his foot as much of the way around aspossible. With toe clips to attach the foot to the pedal the workcan continue practically all the way around the circle, the extensorsacting to push part of the way and the flexors acting to pull itaround during the balance of the revolution. This uses the flexorsas well as the extensors in the work and there is another advantage—the force used is not
Applied anatomy and kinesiology; the mechanism of muscular movement . position to work powerfully through more of the of simply pushing down on the pedals he foflows eachpedal and pushes it with his foot as much of the way around aspossible. With toe clips to attach the foot to the pedal the workcan continue practically all the way around the circle, the extensorsacting to push part of the way and the flexors acting to pull itaround during the balance of the revolution. This uses the flexorsas well as the extensors in the work and there is another advantage—the force used is not limited by the weight of the body as it is in thesimple downward push. One limb flexing and the other extendingreinforce each other, requiring less action of the trunk and armsfor this purpose. There is probably no bodily mechanism capable PLAYS, GAMES AND SPORTS 317 of exerting so much force per minute as this way of driving thebicycle. The position just described uses the extensors of the spine insuch an elongated position that it is bad for posture when taken. Fig. 191.—Bicycling, erect (Photo by Ethel Perrin.)
Size: 1863px × 1341px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksu, booksubjectphysicaleducationandtraining
