| Summary: | 碩士 === 中國文化大學 === 體育學系運動教練碩博士班 === 99 === Purpose: The aim of this study was to examine the effects of high intensity interval training (HIIT) on blood Lactate(La), heart rate (HR), aerobic and anaerobic ability, and the specific exercise performance in young Track and Field athletes. Method: Completed data were collected from 16 young track-field athletes(mean ± SD: age=16.5 ± 0.81 years, height=174.8 ± 6.43 cm, weight=63.8 ± 9.04 kg, training experience = 3.3 ± 1.58 years) who volunteered to participate in this study. Subjects completed an 4-week intervention period that consisted of performing the high intensity interval training after and before the aerobic and anaerobic tests, meanwhile completing the specific training at 30 meters, 400 meters, and 1600 meters respectively. The subjects performing the training four times a week. Mean value of blood lactate measurements were primarily taken from resting, acute, and 3 minutes after experiment respectively in the first week and the last week. Subjects were also measured for heart rates each week. The data was analyzed by independently sample t-test, paired t-test and mixed design two-way ANOVA. The alpha level for all tests was set a priori at p<.05. Results: No significant difference was found in blood lactate between two groups. Paired t-test indicated a significant difference in the heart rate between the maximum heart rate, the first week and the last week (p<0.05). A significant main effect in the aerobic capacity was evident between VO2max(ml-kg-1．m-1), duration of exercise (minute : second), and maximum heart rate (HR) (p<0.05). Only A group (60 seconds), which the anaerobic capacity in the peak of anaerobic power and fatigue index was significantly different (p <0.05). There were no other
significant differences in anaerobic capacity between the peak of anaerobic power (W．Kg-1) , anaerobic power (J．Kg-1) ,the average of anaerobic power (W．Kg-1), and fatigue index(%). The results showed significant in specific exercise performance (at 30 meters, 400-meters, and 1600 meters) between both two groups, but no significant was found at 1600 meters in B group. Conclusion: The findings indicated that based on the high intensity interval training for 4-week period investigated, performing the A group training model (training: 20 seconds, rest: 60 seconds, and 6 bouts) most effectively and significantly improved speed, lactate tolerance ability, speed-endurance, anaerobic and aerobic capacity, as well as specific sport performance for Track-and-Field athletes.
Key words: blood Lactate , heart rate , work-relief ratio
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