Applied anatomy and kinesiology, the mechanism of muscular movement . Fig. 132.—The Roberts chopping exercise for development of the exterjsors ofthe hip and spinal column. Starting Fig. 133.—The Roberts chopping exercise for development of the extensors ofthe hip and spinal column. The finish. GYMNASTIC MOVEMENTS 225 be flexed and extended, bringing hands to shoulders and thrustingthem forward in rhythm; the arms may be swung downward, side-ward, or upward and back to front horizontal; combinations ofdifferent ones of these with right and left arms may be used. Tomake the balance p
Applied anatomy and kinesiology, the mechanism of muscular movement . Fig. 132.—The Roberts chopping exercise for development of the exterjsors ofthe hip and spinal column. Starting Fig. 133.—The Roberts chopping exercise for development of the extensors ofthe hip and spinal column. The finish. GYMNASTIC MOVEMENTS 225 be flexed and extended, bringing hands to shoulders and thrustingthem forward in rhythm; the arms may be swung downward, side-ward, or upward and back to front horizontal; combinations ofdifferent ones of these with right and left arms may be used. Tomake the balance problem easier it is best to stand with one footadvanced. Exercises on the chest pulleys with face to the machine, oftenused for development of the trapezius, rhomboid, teres major andlatissimus, at the same time give strong work for the extensors ofthe hip and spine, to hold the trunk firmly erect as a basis for theaction of the arm muscles. The same is true of the familiar chop-ping movements of the Roberts dumb-bell drill, in which thebells, first raised over one or the other shoulder, are swung fardown beside or between the knees, which completely stretches theextensors, and then
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