Physiology and Biochemistry Research Group-PHYSIS, Faculty of Medicine, University of Antioquia, Medellín, Colombia.
School of Nutrition and Dietetics, University of Antioquia, Medellín, Colombia.
Ann Nutr Metab. 2021;77(5):279-288. doi: 10.1159/000518909. Epub 2021 Oct 6.
The aim of this study was to compare the effects of low-volume, high-intensity interval training (HIIT) or moderate-intensity continuous training (MICT) on body composition in adults with metabolic syndrome (MS).
This is a post hoc analysis of the randomized clinical trial Intraining-MET. Sixty adults (40-60 years old) were randomized to an MICT (n = 31) or HIIT (n = 29) supervised programme 3 days/week for 12 weeks. MICT sessions were conducted for 36 min at 60% of peak oxygen consumption (VO2peak). HIIT sessions included 6 intervals at 90% VO2peak for 1 min, followed by 2 min at 50% VO2peak. Body composition was assessed with dual energy X-ray absorptiometry.
Body weight did not change from pre- to post-training in either MICT (78.9 ± 15.6 kg; 77.7 ± 16.5 kg, p = 0.280) or HIIT groups (76.3 ± 13.4 kg; 76.3 ± 13.7 kg, p = 0.964). Body fat percentage and fat mass (FM) decreased post-training in the MICT (-0.9%; 95% confidence interval [CI]: -0.27 to -1.47 and -0.7 kg; 95% CI: -0.12 to -1.30) and HIIT groups (-1.0%; 95% CI: -0.32 to -1.68 and -0.8 kg; 95% CI: -0.17 to -1.47). Compared to the HIIT programme, MICT significantly reduced android FM (-0.14 kg; 95% CI: -0.02 to -0.26). Lean mass (LM) increased post-training in MICT (+0.7 kg; 95% CI: 0.01-1.41) and HIIT groups (+0.9 kg; 95% CI: 0.12-1.64), but only HIIT increased the trunk LM (+0.6 kg; 95% CI: 0.06-1.20).
Both MICT and HIIT reduced FM without changing body weight in adults with MS. MICT had additional benefits by reducing the android FM, whereas HIIT seemed to increase LM. Given the characteristics of the post hoc analysis, further research is required to confirm these results.
本研究旨在比较低容量、高强度间歇训练（HIIT）和中等强度持续训练（MICT）对代谢综合征（MS）成人身体成分的影响。
这是一项随机临床试验 Intraining-MET 的事后分析。60 名成年人（40-60 岁）被随机分为 MICT（n=31）或 HIIT（n=29）监督方案，每周 3 天，共 12 周。MICT 课程持续 36 分钟，强度为最大摄氧量（VO2peak）的 60%。HIIT 课程包括 6 个 90% VO2peak 的间隔，持续 1 分钟，然后是 50% VO2peak 的 2 分钟。身体成分通过双能 X 射线吸收法进行评估。
MICT 组（78.9±15.6kg；77.7±16.5kg，p=0.280）和 HIIT 组（76.3±13.4kg；76.3±13.7kg，p=0.964）的体重在训练前后均未发生变化。MICT 组（-0.9%；95%置信区间[CI]：-0.27 至-1.47 和-0.7kg；95%CI：-0.12 至-1.30）和 HIIT 组（-1.0%；95%CI：-0.32 至-1.68 和-0.8kg；95%CI：-0.17 至-1.47）的体脂百分比和脂肪量（FM）在训练后减少。与 HIIT 方案相比，MICT 显著减少了安卓 FM（-0.14kg；95%CI：-0.02 至-0.26）。MICT 组（+0.7kg；95%CI：0.01-1.41）和 HIIT 组（+0.9kg；95%CI：0.12-1.64）的瘦体重（LM）在训练后增加，但只有 HIIT 增加了躯干 LM（+0.6kg；95%CI：0.06-1.20）。
MICT 和 HIIT 均可降低 MS 成人的 FM，而不改变体重。MICT 通过减少安卓 FM 有额外的益处，而 HIIT 似乎增加了 LM。由于这是事后分析的特点，需要进一步的研究来证实这些结果。
