The Effects of High-Intensity Interval Training versus Moderate-Intensity Continuous Training on Maximal Oxygen Uptake in Sedentary Adults

The Effects of High-Intensity Interval Training versus Moderate-Intensity Continuous Training on Maximal Oxygen Uptake in Sedent
Research paper
Description: 

The purpose of the investigation was to compare the effects of 8 weeks of low-volume high-intensity interval training (HIIT) versus the effects of high-volume moderate-intensity continuous training (MICT) on maximum oxygen uptake (VO2max) in sedentary adults. We hypothesized that increases in VO2max after both interventions would not significantly differ between groups. 24 participants (27.1 ± 8.4 yr, VO2max = 27.7 ± 6.7 ml*kg-1*min-1) completed 4 wk (3 sessions/wk) of MICT (30 min, 70-75% HRmax). After the 4 wk conditioning period, 13 participants (28 ± 9.7 yr) were randomized into 8 wk (3 session/wk) of HIIT (10 X 1 min, 90-95% HRmax, 1-min active recovery) & 11 participants (26 ± 6.9 yr) were randomized into 8 wk (5 sessions/wk) of MICT (30 min, 70-75% HRmax). VO2max increased significantly in all participants after the interventions (Baseline = 2.01 ± 0.47 L*min-1, Week 12 = 2.30 ± 0.41 L*min-1, P < 0.001). VO2max increased significantly in the HIIT group from week 4 to week 12 (Week 4 = 2.08 ± 0.21 L*min-1, Week 12 = 2.29 ± 0.19 L*min-1, P < 0.001). VO2max also increased significantly in the MICT group from week 4 to week 12 (Week 4 = 2.18 ± 0.63 L*min-1, Week 12 = 2.30 ± 0.58 L*min-1, P = 0.010). There was no group X time interaction for changes in VO2max from week 4 to week 12 (P = 0.755). Therefore, 8 weeks of low-volume HIIT (480 total min) & 8 weeks of high-volume MICT (1200 total min) led to increases in VO2max that did not differ significantly in 24 sedentary adults.

 

Tabs

WHDL ID: 
WHDL-00015145
Subscribe to The Effects of High-Intensity Interval Training versus Moderate-Intensity Continuous Training on Maximal Oxygen Uptake in Sedentary Adults