Open AccessEffects of HIIT and MICT on cardiovascular risk factors in adults with overweight and/or obesity: A meta-analysis
Author(s) -
SU Liqiang,
Jinmei Fu,
Shunli Sun,
Guanggao Zhao,
Wei Cheng,
Chuanchuan Dou,
Minghui Quan
Publication year - 2019
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0210644
Subject(s) - medicine , overweight , interval training , high intensity interval training , obesity , continuous training , physical therapy
Objective The purpose of this study was to evaluate the effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on cardiovascular disease (CVD) risk factors in adults with overweight and obesity. Methods Twenty-two articles were included by searching six databases, the total number of subjects was 620 in these articles. Outcomes were synthesised using a random-effects meta-analysis of the Standardized mean difference (SMD) in CVD risk factors. Results HIIT and MICT resulted in statistically significant reductions in Weight, BMI, fat%, total cholesterol(TC), and improvement in VO 2max . Compared with MICT, subgroup of durations of HIIT training interval ≥2 min can significantly increase VO 2max (SMD = 0.444, 95% CI:0.037~0.851, P = 0.032), subgroup of energy expenditure of HIIT equal to MICT can significantly increase VO 2max (SMD = 0.399, 95% CI:0.106~0.692, P = 0.008). Conclusions HIIT appears to provide similar benefits to MICT for improving body composition, VO 2max and TC, but HIIT spent less time than MICT by 9.7 min on one session. HIIT is superior to MICT in improving cardiopulmonary fitness when durations of HIIT training interval ≥2 min or energy expenditure of HIIT same as MICT. PROSPERO ID: CRD42016045835.