The subjects cycled for 30 sec on each test.Occasion before the measurements were performed.A metronome was used to enable each.Subject to find and keep the correct pedaling rate.The subjects were filmed during 5 sec intervals.Three of the five revolutions registered were selected.And analyzed throughout the complete pedal.Revolution. The film was analyzed with a projector.(Analector ANL4), which made it possible.To "freeze" the film and trace the picture. Pictures.Were traced from the cine-film at intervals of approximately.15O crank angle. The position for the.,, hip knee and ankle joint axes and crank angle.Were then determined using the traced pictures.(Fig. 1). The joint angles were measured from the.Drawn pictures. The testlretest error in joint angle.
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