저항운동 강도에 따른 leptin의 반응 = The Responses of leptin on Resistance Exercise of Various Intensities

다국어 초록 (Multilingual Abstract)

Yoo, J.H., Kim, E.K., Yoo, K.W. The Responses of leptln on Resistance Exercise of Various Intensities. Exercise Science, 13(2): 223-232, 2004. Resistance exercise has been one of the major potent stimulus to the neuromuscular system. Based on the specific program design, resistance training has been reported to enhance strength, power, or local muscular endurance. However, the scientifc basis of the exercise intensity has not been enough to manifest about several hormone. So, the purpose of this study was to define that the responses of appetite hormone(leptin) after resistance exercise of high level intensity(HI), moderate level intensity(MI), and low level intensity(LI). The subjects for this study were 9 men (Age=25.4±3.56yrs.;height=175.6±4.46cm; weight=71.6±8.97kg) who didn`t have history of cardiopulmonary diseases and medical problems. They performed the circuit resistance training using HI(10reps at 80% of one-repetition maximum (1RM), 1min rest), MI(13reps at 60% of 1RM, 1min rest), and LI(20reps at 40% of 1RM, 1min rest) protocols with 3 sets. Approximately, total exercise volume was 39,000J on all of the exercise protocols. Hormonal concentration was measured at three of different times: pre, post and recovery thirty minutes of the exercise. For the data, all of the measurements were represented by mean and standard deviation using SPSS statistical package(version 10,0). The statistical techniques for data analysis were two-way repeated ANOVA to determine the differences between each intensity and each time. The 5%, level of significance was used as the critical level for acceptance of hypotheses of the study. The results of this study were shown as followed; No differences in exercise intensty and time were observed in appetite hormone(leptin). Particularly, the trend was shown that leptin was decreased after resistance exercise on 40%, and 80% of 1RM; whereas, leptin was increased on 60% of 1RM. In conclusion, the results of this study suggested that MI resistance exercise training could contribute to decrease to improvement of appetite more than HI or LI resistance exercise could.

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