The effect of a high-intensity interval training program on high-density lipoprotein cholesterol in young men

Musa, DI, Adeniran, SA, Dikko, AU, and Sayers, SP. The effect of a high-intensity interval training program on high-density lipoprotein cholesterol in young men. J Strength Cond Res 23(2): 587-592, 2009-This study examined the impact of an 8-week program of high-intensity interval training on highdensity lipoprotein cholesterol (HDL-C), total cholesterol (TC), and the atherogenic index (TC/HDL-C) in 36 untrained men ages 21-36 years. Participants were randomly assigned to an interval training group (n = 20) or a control group (n = 16). Participants in the experimental group performed 3.2 km of interval running (1:1 work:rest ratio) 3 times a week for 8 weeks at an intensity of 90% of maximal heart rate (̃423 kcal per session). Results indicated significant pre- to posttraining changes in HDL-C (1.1 vs. 1.3 mmol·L -1, p < 0.0001) and TC/ HDL-C (3.8 vs. 3.1, p < 0.0001) but no significant changes in TC (3.9 vs. 3.8 ·L -1, p > 0.05) with interval training. It was concluded that an 8-week program of high-intensity interval training is effective in eliciting favorable changes in HDL-C and TC/HDL-C but not TC in young adult men with normal TC levels. Our findings support the recommendations of highintensity interval training as an alternative mode of exercise to improve blood lipid profiles for individuals with acceptable physical fitness levels. © 2009 National Strength and Conditioning Association.