Effects of variation in intensity and duration of interval training programs on maximum oxygen uptake, hemonglobin, anaerobic performance and anaerobic threshold
Abstract:
The objective of this research was to study the effects of variation in intensity and duration of interval training programs on maximum oxygen uptake, hemoglobin, anaerobic performance and anaerobic threshold. Sample of this study, obtained through purposive sampling method, was thirty-two male students of Faculty of Sport Science Burapha University. The samples were divided into 4 groups of eight and trained by running. Group 1 was trained at intensity of 90-95 percent of MHR (1 min. with 5 min. rest intenval); Group 2 was trained at intensity of 80-85 percent of MHR (3 min. with 3 min. rest interval); Group 3 was trained at intensity of 70-75 percent of MHR (5 min. with 1 min. rest interval); Group 4 was the control group. The training programs took 8 weeks to complete. The variables studied were maximum oxygen uptake, hemoglobin level, anaerobic performance (anaerobic power and capacity) and anaerobic threshold. Dependent t-test and One-way ANOVA were used for pre-training and post-training data analysis. Significant level was set at 0.05. Results showed that after 8 weeks of interval training programs, maximum oxygen uptake (Gas analysis method-COSMED) in Group 1 and 2 statistical increased significantly from 46.57+5.13 to 50.10+5.94 and 46.20+4.26 to 49.99+3.62 ml/ kg-1/ min-1 respectively. For anaerobic threshold (Ventilation equivalent method- COSMED), only Group 2 showed a significant increase from 26.88+4.71 to 31.35+6.57 ml/ kg-1/ min-1. There was no significant difference between pre-training and post-training in all groups in hemoglobin level (analyzed through blood sample method) and anaerobic performance (Wingate anaerobic test). It could be concluded from the existing data that the interval training program at 80-85 percent of MHR 3 minutes with 3 minutes rest interval could improve maximum oxygen uptake and anaerobic threshold. The interval training program at 90-95 percent of MHR 1 minute with 5 minutes rest interval could only improve maximum oxygen uptake. All interval training programs in this study had no effect on hemoglobin level and anaerobic performance.