Purpose: To compare the effects of high intensity interval (HIIT) and adjustable speed continuous (ASCT) training (matched for training time) on ATP-PC system, aerobic- and anaerobic endurance by running in two weeks. Methods: Pre- and post-training, graded running test (GRT) and 10-m shuttle run test (SRT: 3 sets×3 repetitions) were assessed in 16 male basketball players (20.30±1.30 yrs, 182.50±5.80 cm, 76.60±13.80 kg). The thresholds 2 mmol/l aerobic threshold [2-AT] and 4 mmol/l anaerobic threshold [4-AnT] were obtained from GRT. Blood lactate concentrations [La] during and after SRT were taken. Subjects were arranged by 4-AnT then matched into HIIT and ASCT group and performed 7 times 20-min running training. All values are reported as mean±SE, thresholds and blood lactate concentration comparisons were made using two-way ANOVA with repeat measures (α=.05). Results: Both groups had significant improvement in 2-AT (18.2-19.0%, p<.05), but only HIIT had significant increase in 4-AnT (3.10±0.20 m/s to 3.40±0.20 m/s, p<.05). ASCT had significant decrease in the La during and after SRT (p<.05), but in HIIT only the Set1 was lower significantly (p<.05). The La at Set2, and after SRT of ASCT were significantly lower than HIIT after training (p<.05). Conclusion: When training time is matched in two weeks, HIIT improves both aerobic- and anaerobic endurance, but not to ATP-PC system; ASCT increases the aerobic endurance and ATP-PC system, but keep anaerobic endurance constant.
Purpose: To compare the effects of high intensity interval (HIIT) and adjustable speed continuous (ASCT) training (matched for training time) on ATP-PC system, aerobic- and anaerobic endurance by running in two weeks. Methods: Pre- and post-training, graded running test (GRT) and 10-m shuttle run test (SRT: 3 sets×3 repetitions) were assessed in 16 male basketball players (20.30±1.30 yrs, 182.50±5.80 cm, 76.60±13.80 kg). The thresholds 2 mmol/l aerobic threshold [2-AT] and 4 mmol/l anaerobic threshold [4-AnT] were obtained from GRT. Blood lactate concentrations [La] during and after SRT were taken. Subjects were arranged by 4-AnT then matched into HIIT and ASCT group and performed 7 times 20-min running training. All values are reported as mean±SE, thresholds and blood lactate concentration comparisons were made using two-way ANOVA with repeat measures (α=.05). Results: Both groups had significant improvement in 2-AT (18.2-19.0%, p<.05), but only HIIT had significant increase in 4-AnT (3.10±0.20 m/s to 3.40±0.20 m/s, p<.05). ASCT had significant decrease in the La during and after SRT (p<.05), but in HIIT only the Set1 was lower significantly (p<.05). The La at Set2, and after SRT of ASCT were significantly lower than HIIT after training (p<.05). Conclusion: When training time is matched in two weeks, HIIT improves both aerobic- and anaerobic endurance, but not to ATP-PC system; ASCT increases the aerobic endurance and ATP-PC system, but keep anaerobic endurance constant.