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Exerc Sci > Volume 12(4); 2003 > Article

Exercise Science 2003;12(4): 703-714.

초ㆍ중학생의 자전거 임계강도 운동의 지속시간과 영향요인 분석

이동규¹, 이병근²

¹서울교육대학교
²상명대학교

ABSTRACT

Lee, D.K., Lee, B.K. Effects factors and exercise time at critical power of bicycle ergometer of primary and middle school students. Exercise Science. 12(4): 703-714, 2003. The purpose of this study were to analyze the effects factors and exercise time at critical power of bicycle ergometer of primary and middle school students, and to provide the guidelines for the measurement of critical power. The subjects were consisted of 16 males(12.7±1.2 yrs), 19 females(13.0±1.8 yrs) on primary and middle school. The critical power were calculated by regression analysis according to the relationship among work, intensity and time after four cycle ergometer test to fatigue from 1 to 10 minute. We were measured bicycle ergometry exercise time at CP for 30 minutes or fatigue. The main findings were as follows; On male primary, middle school students, and female middle school students, CP were 7.7～13.8% more higher than AT. However, on female primary school students, AT was 4.4% more higher than CP. Exercise time at CP of male students was 22.12±7.42 minutes, that of female students was 20.08±7.20 minutes. As a results of comparison CP effects factors among exercise time groups, the higher group of relative AT were more longer exercise time. On correlation analysis among exercise time at CP and effects factors, exercise time had a positive relationship with relative AT(W/kg), and relative average intensity(W/kg) for CP measurement. Exercise time had a negative relationship with CP(W), and lowest intensity(W) for CP measurement. It is concluded that CP was a little overestimate AT, but CP was useful index on aerobic power. Exercise time at CP had a positive relationship with relative AT(W/kg), and relative average intensity(W/kg) for CP measurement, and had a negative relationship with CP(W), and lowest intensity(W) for CP measurement.

Key words: critical power, anaerobic threshold, exercise time, primary school, middle school