title: Short-Term High-Intensity Interval Training on Body Composition and Blood Glucose in Overweight and Obese Young Women.
abstract: This study was to determine the effects of five-week high-intensity interval training (HIIT) on cardiorespiratory fitness, body composition, blood glucose, and relevant systemic hormones when compared to moderate-intensity continuous training (MICT) in overweight and obese young women.Methods. Eighteen subjects completed 20 sessions of HIIT or MICT for five weeks. HIIT involved 60 × 8 s cycling at ~90% of peak oxygen consumption ([Formula: see text]) interspersed with 12 s recovery, whereas MICT involved 40-minute continuous cycling at 65% of [Formula: see text]. [Formula: see text], body composition, blood glucose, and fasting serum hormones, including leptin, growth hormone, testosterone, cortisol, and fibroblast growth factor 21, were measured before and after training.Results. Both exercise groups achieved significant improvements in [Formula: see text] (+7.9% in HIIT versus +11.7% in MICT) and peak power output (+13.8% in HIIT versus +21.9% in MICT) despite no training effects on body composition or the relevant systemic hormones. Blood glucose tended to be decreased after the intervention (p= 0.062). The rating of perceived exertion in MICT was higher than that in HIIT (p= 0.042).Conclusion. Compared with MICT, short-term HIIT is more time-efficient and is perceived as being easier for improving cardiorespiratory fitness and fasting blood glucose for overweight and obese young women.
authors: Faculty of Education, University of Macau, Macau.
authors: Zhaowei
authors: Z
authors: Kong
authors: Faculty of Education, University of Macau, Macau; Institute of Physical Education, Huzhou University, Huzhou, Zhejiang, China.
authors: Shengyan
authors: S
authors: Sun
authors: Faculty of Education, University of Macau, Macau.
authors: Min
authors: M
authors: Liu
authors: School of Physical Education and Sports, Macau Polytechnic Institute, Macau.
authors: Qingde
authors: 0000-0002-3959-4526
authors: Q
authors: Shi
mesh_terms: D000293:Adolescent; D000328:Adult; D001786:Blood Glucose / Q000378:metabolism*; D001823:Body Composition; D000072599:Cardiorespiratory Fitness; D004032:Diet; D002149:Energy Intake; D004734:Energy Metabolism; D015444:Exercise; D005260:Female; D005346:Fibroblast Growth Factors / Q000378:metabolism; D000072696:High-Intensity Interval Training / Q000379:methods*; D019382:Human Growth Hormone / Q000378:metabolism; D006801:Humans; D006854:Hydrocortisone / Q000378:metabolism; D020738:Leptin / Q000378:metabolism; D008256:Macau; D009765:Obesity / Q000378:metabolism / Q000628:therapy*; D050177:Overweight / Q000378:metabolism / Q000628:therapy; D013739:Testosterone / Q000378:metabolism; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D001786:Blood Glucose; D020738:Leptin; C414620:fibroblast growth factor 21; D019382:Human Growth Hormone; D013739:Testosterone; D005346:Fibroblast Growth Factors; D006854:Hydrocortisone