Institute of Physical Education, Normal College, Shenzhen University, 3688 Nan Hai Road, Nan Shan district, Shenzhen, 518061, China.
Institute of KEEP Collaborative Innovation, Shenzhen, 518061, China.
BMC Pediatr. 2022 Mar 1;22(1):112. doi: 10.1186/s12887-021-03079-z.
With accumulating evidence suggesting that CVD has its origins in childhood obesity. The purpose of this study was to determine the effect of a real-world school-based high-intensity interval training intervention on body composition, cardiorespiratory fitness and cardiometabolic markers in obese boys aged 10 to 13 years.
Forty-five adolescent boys with obesity (age = 11.2 ± 0.7 years, BMI = 24.2 ± 1.0 kg/m), were randomized to high-intensity interval training group (HIIT, n = 15), moderate-intensity continuous training group (MICT, n = 15), or a control group (CON, n = 15). The intervention groups performed three weekly exercise sessions over 12 weeks. HIIT group performed two sets of eight bouts of 15 s run at high-intensity [90 ~ 100% maximal aerobic speed (MAS)] separated by eight bouts of 15 s recovery run at low-intensity (50% MAS), MICT group performed 30 min run at moderate intensity (60 ~ 70% MAS) and CON group were instructed to continue their normal behaviors. All participants had indices of body composition, cardiorespiratory fitness (CRF) and cardiometabolic markers measured at baseline and post-intervention. Statistical differences between and within groups were determined by use of two-way analysis of variance (ANOVA) with repeated measures.
Following the school-based training program, BMI and body fat mass decreased (BMI: - 1.8 kg/m vs. - 1.2 kg/m, P < 0.01; FM: - 1.6 kg, P < 0.05 vs. -3.7 kg, P < 0.01) in HIIT and MICT group, but there was no significant difference between the two interventions; [Formula: see text] both increased significantly in two intervention groups, and the increment of HIIT group was significantly greater than that of MICT (6.1 mL/kg/min vs. 3.8 mL/kg/min, P < 0.01), Visceral adipose tissue was significant decrease in HIIT group (- 53 g vs. -17 g, P < 0.01) whilst the MICT group experienced a significant decrease in body fat percentage (- 3.1 ± 1.0 kg, P < 0.01), but there were no significant difference between the two interventions. Low-density lipoprotein cholesterol decreased only in HIIT group (- 17.2%, P < 0.05). Significant decrease in the usual index of insulin resistance (HOMA-IR) occurred in HIIT and MICT groups (- 27.3 and - 28.6%, respectively; P < 0.05).
Our results demonstrated that high-intensity interval training based on running can be used to improve the physical health of obese adolescents in school. Further investigations involving a larger cohort of participants, taken from different schools, is recommended.
title Effect of High Intensity Interval Training on Obese Children and Adolescents, time 16/12/2017, ID ChiCTR-IOR-17013992 , website http://www.chictr.org.cn.
越来越多的证据表明，心血管疾病起源于儿童肥胖。本研究旨在确定基于学校的高强度间歇训练干预对 10 至 13 岁肥胖男孩的身体成分、心肺功能和心脏代谢标志物的影响。
45 名肥胖青少年（年龄=11.2±0.7 岁，BMI=24.2±1.0kg/m²）随机分为高强度间歇训练组（HIIT，n=15）、中等强度持续训练组（MICT，n=15）和对照组（CON，n=15）。干预组每周进行 3 次运动，共 12 周。HIIT 组进行两组 8 组 15 秒高强度跑（90100%最大有氧速度（MAS）），每组间隔 8 组 15 秒低强度恢复跑（50%MAS），MICT 组进行 30 分钟中强度跑（6070%MAS），CON 组继续正常行为。所有参与者在基线和干预后测量身体成分、心肺功能（CRF）和心脏代谢标志物的指标。使用双因素重复测量方差分析（ANOVA）确定组间和组内的统计学差异。
在基于学校的训练计划后，BMI 和体脂肪量下降（BMI：-1.8kg/m 与-1.2kg/m，P<0.01；FM：-1.6kg，P<0.05 与-3.7kg，P<0.01）在 HIIT 和 MICT 组中，但两种干预措施之间没有显著差异；[公式：见文本]均显著增加，HIIT 组增加幅度明显大于 MICT 组（6.1mL/kg/min 与 3.8mL/kg/min，P<0.01），内脏脂肪组织在 HIIT 组显著减少（-53g 与-17g，P<0.01），而 MICT 组体脂肪百分比显著下降（-3.1±1.0kg，P<0.01），但两种干预措施之间无显著差异。只有 HIIT 组的低密度脂蛋白胆固醇降低（-17.2%，P<0.05）。HIIT 和 MICT 组的胰岛素抵抗通常指数（HOMA-IR）均显著降低（-27.3%和-28.6%，分别；P<0.05）。
我们的结果表明，基于跑步的高强度间歇训练可以用于改善学校肥胖青少年的身体健康。建议进一步开展涉及更多来自不同学校的参与者的更大规模队列研究。
高强度间歇训练对肥胖儿童和青少年的影响，时间 16/12/2017，编号 ChiCTR-IOR-17013992，网址 http://www.chictr.org.cn。
