摘要:The purpose of this study was to identify the effects of three initial crank positions and jaw clenching activities on seated cycling performance. 10 normal subjects (5 females, 5 males) completed six separate occasions of Wingate Test with three different initial crank positions (0°, 47°, 71°) and two modes of jaw activities (jaw clenching and jaw loose). The findings suggest that, crank angle of 71° has the highest power output compare to other angles. The combination of 71° crank angles and jaw loose the jaw shows the best cycling performance.