Sex efficiency through exercises : special physical culture for women / by Th. H. van de Velde ; [photos, by E. Steinemann].
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PELVIC MOTION FOR- WARDS, in THE ACT OF WALKING (First Phase). The right leg steps forward and the upper part of the body is slightly in- clined forward with arched loins. The weight of the body rests equally on both feet. FILM 8. PELVIC MOTION SIDEWAYS, W H I L E WALKING (First Phase). Initial position : Feet together. The pelvis is drawn to the left while the knees are slightly bent.