本研究的目的在探討8週高、低強度有氧運動訓練以及肌力訓練，對於體位判定正常者身體組成的影響，並觀察停止訓練4週之後，身體組成的變化情形。將23名受試者隨機分成高強度有氧訓練組(H; N=9)，於跑步機上實施強度為85%VO2 max，每次20分鐘，每週3次的有氧運動訓練；低強度有氧訓練組(L; N=9)，實施強度為50% VO2 max ，每次30分鐘，每週3次的慢走訓練；肌力訓練組(S; N=5)，則實施15 RM，每種動作做3組，每週3次的肌力訓練。8週不同類型的運動訓練，對於各項身體組成（包括體重、體脂肪百分比、脂肪重、去脂體重、肌肉重、骨質量）的影響並不顯著，但是在心肺耐力與肌力上，則有顯著增進的情形；而停止訓練l個月後，各項身體組成的變化亦不大。8週的訓練之後，體重皆有小幅度的增加(p>0.05)，而高強度有氧訓練組增加的幅度最高(1.08±1.77 kg)，肌力訓練組最低(0.34±0.73 kg)；各組訓練後所增加的脂肪重，分別佔增加體重的81%(H)、73%(L)、153% (S)。在短期的減肥處方箋中，若僅使用運動介入的處理，身體組成並無顯著的變化。

The purpose of this study was to examine the effects of 8 weeks high or low intensity endurance or strength training on body composition in normal persons. And the second purpose was to investigate the changes of body composition after 4 weeks detraining. Twenty-three normal men were matched and randomly placed into three groups; a group that performed running exercise on treadmill three times a week, 20 minutes per session at 85%VO2max (H; N=9); a group that performed walking exercise three times a week, 30 minutes per session at 50%VO2max (L; N=9); and a group that performed strength training three times a week, 3 sets of 15 RM per session (S; N5). 8 weeks different exercise training insignificantly influenced on the body composition included body weight, percent body fat, fat mass, fat-free mass, muscle mass, and bone mass. However, the cardiorespiratory function and muscular strengthen were significantly improved. The variables of body composition were also unchanged after one month detraining. After 8 week’ different exercise training, the body weight of all groups was tiny increment but not significant (P>0.05), the highest increment was in H group (1.08 ± 1.77 kg), and the lowest was in S (0.34 ± 0.73 kg). After training, the percent of body mass increment attributed to fat for the H, L, and S groups was 81%, 73%, and 153%, respectively. The short-term weight-loss program merely applying exercise intervention should not significantly change the body composition.