Seven databases were searched from their inception to 22 October 2022 for studies (randomized controlled trials only) with HIIT and MICT intervention. Meta-analysis was carried out for within-group (pre-intervention vs. post-intervention) and between-group (HIIT vs. MICT) comparisons for change in body mass (BM), body mass index (BMI), waist circumference (WC), percent fat mass (PFM), fat mass (FM), fat-free mass (FFM), and CRF.
A total of 1738 studies were retrieved from the database, and 29 studies were included in the meta-analysis. Within-group analyses indicated that both HIIT and MICT can bring significant improvement in body composition and CRF, except for FFM. Between-group analyses found that compared to MICT, HIIT brings significant benefits to WC, PFM, and VO2peak.
The effect of HIIT on fat loss and CRF in the young and middle-aged is similar to or better than MICT, which might be influenced by age (18-45 years), complications (obesity), duration (>6 weeks), frequency, and HIIT interval. Despite the clinical significance of the improvement being limited, HIIT appears to be more time-saving and enjoyable than MICT.
从开始到2022年10月22日搜索了七个数据库,以进行HIIT和MICT干预的研究(仅随机对照试验)。在组内进行Meta分析(干预前vs.干预后)和组间(HIIT与MICT)体重变化(BM)的比较,体重指数(BMI),腰围(WC),脂肪质量百分比(PFM),脂肪量(FM),无脂质量(FFM),和CRF。
从数据库中检索到总共1738项研究,29项研究纳入荟萃分析.组内分析表明,HIIT和MICT都可以显著改善身体成分和CRF,除了FFM。组间分析发现,与MICT相比,HIIT给WC带来了巨大的好处,PFM,和VO2peak。
HIIT对中青年减脂和CRF的影响与MICT相似或更好,这可能会受到年龄(18-45岁)的影响,并发症(肥胖),持续时间(>6周),频率,和HIIT间隔。尽管改善的临床意义有限,HIIT似乎比MICT更节省时间和享受。