| Summary: | 碩士 === 國立臺灣師範大學 === 體育研究所 === 85 === The purpose of this study was to evaluate the relationship between critical power and PWC170 for cycle ergometry. Twenty-one students with mean age, height and body weight of 23.38 (SD=2.44)yrs, 173.00(SD=3.78)cm, and 69.24(SD=5.64)kg, respectivly were studied. All subjects performed 150W, 180W, 210W cycle exercise to exhaustion in random order for critical power and PWC170 with a linear power -1/time model and a linear power-heart rate(the third minute) model. Results for critical power and PWC170 were 107.66±13.29W and 189.11±11.59W respectively. Related t-test and correlation analysis revealed that there were significant differences (t=-99.02, P<0.05), but significant correlation (r=0.96, P<0.05) between PWC170 and critical power. Critical power could be predicted by regression equation: y=1.19x-117.43. It is concluded that PWC170 and critical power were significantly correlated, and critical power could be predicted validly by PWC170.
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