. Applied anatomy and kinesiology. nd lowers his arms, since this puts a tension on thetrunk muscles, giving them more power, and also puts the gluteusmaximus in position to work powerfully through more of the of simply pushing down on the pedals he follows 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 flex
. Applied anatomy and kinesiology. nd lowers his arms, since this puts a tension on thetrunk muscles, giving them more power, and also puts the gluteusmaximus in position to work powerfully through more of the of simply pushing down on the pedals he follows 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 arms PLAYS, GAMES AND SPORTS 299 for this purpose. There is probably no bodily mechanism capableof exerting so much force per minute as this way of driving Fig. 183.—Bicycling, erect position. (Photo by Ethel Perrin.)
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