Bouamra Marwa, Zouhal Hassane, Ratel Sébastien, Makhlouf Issam, Bezrati Ikram, Chtara Mokhtar, Behm David G, Granacher Urs, Chaouachi Anis
Tunisian Research Laboratory "Sports Performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia.
High Institute of Sport and Physical Education, Ksar-Saïd, Manouba University, Tunis, Tunisia.
Front Physiol. 2022 May 20;13:869063. doi: 10.3389/fphys.2022.869063. eCollection 2022.
The prevalence of obesity in the pediatric population has become a major public health issue. Indeed, the dramatic increase of this epidemic causes multiple and harmful consequences, Physical activity, particularly physical exercise, remains to be the cornerstone of interventions against childhood obesity. Given the conflicting findings with reference to the relevant literature addressing the effects of exercise on adiposity and physical fitness outcomes in obese children and adolescents, the effect of duration-matched concurrent training (CT) [50% resistance (RT) and 50% high-intensity-interval-training (HIIT)] on body composition and physical fitness in obese youth remains to be elucidated. Thus, the purpose of this study was to examine the effects of 9-weeks of CT compared to RT or HIIT alone, on body composition and selected physical fitness components in healthy sedentary obese youth. Out of 73 participants, only 37; [14 males and 23 females; age 13.4 ± 0.9 years; body-mass-index (BMI): 31.2 ± 4.8 kg·m-2] were eligible and randomized into three groups: HIIT ( = 12): 3-4 sets×12 runs at 80-110% peak velocity, with 10-s passive recovery between bouts; RT ( = 12): 6 exercises; 3-4 sets × 10 repetition maximum (RM) and CT ( = 13): 50% serial completion of RT and HIIT. CT promoted significant greater gains compared to HIIT and RT on body composition ( < 0.01, d = large), 6-min-walking test distance (6 MWT-distance) and on 6 MWT-VO ( < 0.03, d = large). In addition, CT showed substantially greater improvements than HIIT in the medicine ball throw test (20.2 . 13.6%, < 0.04, d = large). On the other hand, RT exhibited significantly greater gains in relative hand grip strength ( < 0.03, d = large) and CMJ ( < 0.01, d = large) than HIIT and CT. CT promoted greater benefits for fat, body mass loss and cardiorespiratory fitness than HIIT or RT modalities. This study provides important information for practitioners and therapists on the application of effective exercise regimes with obese youth to induce significant and beneficial body composition changes. The applied CT program and the respective programming parameters in terms of exercise intensity and volume can be used by practitioners as an effective exercise treatment to fight the pandemic overweight and obesity in youth.
儿童肥胖的患病率已成为一个主要的公共卫生问题。事实上，这一流行病的急剧增加会导致多种有害后果。体育活动，特别是体育锻炼，仍然是干预儿童肥胖的基石。鉴于关于运动对肥胖儿童和青少年肥胖及体能结果影响的相关文献存在相互矛盾的研究结果，持续时间匹配的同时训练（CT）[50%阻力训练（RT）和50%高强度间歇训练（HIIT）]对肥胖青少年身体成分和体能的影响仍有待阐明。因此，本研究的目的是比较9周的CT训练与单独的RT或HIIT训练对健康久坐的肥胖青少年身体成分和选定体能成分的影响。在73名参与者中，只有37名[14名男性和23名女性；年龄13.4±0.9岁；体重指数（BMI）：31.2±4.8kg·m-2]符合条件并被随机分为三组：HIIT组（n = 12）：3 - 4组×以80 - 110%峰值速度进行12次跑步，每组之间有10秒被动恢复；RT组（n = 12）：6项练习；3 - 4组×10次最大重复量（RM）；CT组（n = 13）：按顺序完成50%的RT和50%的HIIT。与HIIT和RT相比，CT在身体成分方面促进了显著更大的改善（P < 0.01，d = 大效应量）、6分钟步行测试距离（6MWT - 距离）以及6MWT - VO方面（P < 0.03，d = 大效应量）。此外，在药球投掷测试中，CT显示出比HIIT有显著更大的改善（20.2%对13.6%，P < 0.04，d = 大效应量）。另一方面，RT在相对握力方面（P < 0.03，d = 大效应量）和纵跳方面（P < 0.01，d = 大效应量）比HIIT和CT有显著更大的提高。与HIIT或RT训练方式相比，CT对脂肪、体重减轻和心肺适能有更大的益处。本研究为从业者和治疗师提供了重要信息，关于对肥胖青少年应用有效的运动方案以诱导显著且有益的身体成分变化。所应用的CT方案以及在运动强度和运动量方面各自的编程参数可被从业者用作一种有效的运动治疗方法，以对抗青少年中的超重和肥胖流行问题。
