EFFECTS OF AEROBIC AND ANAEROBIC TRAINING TO EXHAUSTION ON VO2MAX AND EXERCISE PERFORMANCE

1093 This study compared how exhaustive aerobic continuous training (AT) and exhaustive anaerobic interval training (ANT) affected VO2max, exercise to fatigue at VO2max, and Wingate Power Test scores. Subjects were 15 men and women (24.1±0.5 y, BMI=24.1±1.0, VO2max=39.0±1.8 ml/kg/min; mean±SEM). AT started at 70% VO2max and increased by 5% of VO2max every 3 min until fatigue. The ANT consisted of 15 sec sprints at 170% VO2max, followed by a 30 sec recovery at <50% VO2max. If fatigue did not occur before 15 min of ANT, the recovery intervals were then shortened to 15 sec. Both groups exercised 3 d/wk for 4 wk. There was no group difference for exercise time per session (AT=16.1±0.4, ANT=17.2±0.5 min). After training, the ANT group increased time to fatigue at VO2max (5.23±0.41 to 7.47±0.91 min), while the AT showed no significant change (4.09±0.52 to 5.31±0.91 min). VO2max improved by 4.0±1.2 ml/kg/min in the ANT group, whereas the AT group saw no change (−1.3±0.9). Improvements in peak power (0.94±0.23 vs −0.19±0.10 watts/kg b.w.), power output over 30 sec (0.41±0.19 vs −0.11±0.09 watts/kg b.w.), and total work output (11.7±5.8 vs −3.5±2.8 J/kg) were greater for the ANT than the AT, respectively. Exhaustive ANT 3d/wk for < 20 min improves VO2max, exercise time to fatigue at VO2max, and Wingate Power Test performance more than exhaustive AT.