單次間歇訓練中休息方式對於耐力選手之影響

Purpose: To investigate the effect of different rest strategies which were constant time (40 sec, TD) and back to 2mmol/l heart rate (HRD) during the 4mmol/l speed interval training on middle and long distance runners. Methods: Eight male adolescent middle and long distance runners (age: 16.6±0.5 yrs. height: 171.1±3.8 cm. weight: 61.3±6.0kg) were recruited in this study. Subjects were accepted to increment treadmill tests and after one week, two different rest strategies were applied to 4mrnol/l speed (3.8±0.3m/s) interval running (2sets×5reps×3mimi) in counter balance order with 48 hours separated. Blood lactate (La) and heart rate (HR) were recorded at 1st, 3rd, 5th, 6th, 8th, and 10th repetition and 3rd, 5th minute after training. Using two-way ANOVA with repeat measures to compare inter- and intra- La and HR during different rest strategies. The significant level was set at p＜.05. Results: Interaction was showed on La at different rest strategies during training (F=0.52,p＜.05). but it wasn't on HR (p＞.05). After training, La at the 3rd minute of TD was significant higher than HRD. but no difference in HR as found. During the TD. La at rep3 (3.09±0.16 mmol/l) and rep8 (2.86±0.17 mmol/l) were significantly different from repl (3.93±0.14 mmnol/l) (p＜.05) and HR were increased with repetitions p＜.05). During the HRD. the La of rep5, rep8 amid repl0 (2.79±0.16-3.51±0.13mrnol/l) were significant lower than repl (3.85±0.11 mmol/l) amid HR increased with repetitions, too (p＜.05). Conclusion: Different rest strategies may affect metabolism of muscle during 4mmol/l speed interval training but no significant effect on circulation.