Institute of Sports Sciences and Physiotherapy, Faculty of Medicine, University of Tartu, Tartu, Estonia.
Department of Physiotherapy and Environmental Health, Tartu Health Care College, Tartu, Estonia.
J Sports Sci. 2022 Sep;40(18):2010-2017. doi: 10.1080/02640414.2022.2125199. Epub 2022 Sep 20.
This study examined the effect of a supervised 12-week sprint interval training (SIT) on cardiorespiratory fitness (CRF) and body composition in adolescent boys with obesity. Twenty-eight adolescents with obesity were allocated to either an intervention group (SIT) (13.1 ± 0.3 yrs; body mass index [BMI]: 30.3 ± 0.9 kg.m) or a control group (CONT) (13.7 ± 0.4 yrs; BMI: 32.6 ± 1.6 kg.m). The SIT group performed 4-6 × 30s "all-out" cycling bouts, interspersed with 4 min of recovery 3 days a week for 12 weeks. CRF was measured by direct peak oxygen consumption (VOpeak) defined as VOpeak per kg of body mass (mL.minkg) or by VOpeak per kg of lean body mass (mL.minLBM) and body composition was assessed by dual-energy X-ray absorptiometry. SIT intervention led to a significant and large between-group difference in VOpeak (p = 0.004; η = 0.29). Although SIT group had a significant reduction in body fat percentage (BF%) (from 41.1 ± 1.3% to 39.2 ± 1.5%; p = 0.006), there were no between-group differences in the change of the pre- and post-measures in BF% (p = 0.067). In conclusion, 12-week SIT is effective in increasing CRF and decreasing BF% in adolescent boys with obesity.
本研究旨在探讨监督下的 12 周冲刺间歇训练（SIT）对肥胖青少年的心肺功能（CRF）和身体成分的影响。28 名肥胖青少年被分配到干预组（SIT）（13.1±0.3 岁；体重指数 [BMI]：30.3±0.9 kg.m）或对照组（CONT）（13.7±0.4 岁；BMI：32.6±1.6 kg.m）。SIT 组每周进行 3 天，每天 4-6 次 30 秒的“全力以赴”自行车冲刺，每次冲刺之间间隔 4 分钟恢复时间。CRF 通过直接峰值耗氧量（VOpeak）来衡量，定义为每公斤体重的 VOpeak（mL.minkg）或每公斤去脂体重的 VOpeak（mL.minLBM），身体成分通过双能 X 射线吸收法来评估。SIT 干预导致 VOpeak 出现显著的、较大的组间差异（p=0.004；η=0.29）。尽管 SIT 组的体脂百分比（BF%）显著降低（从 41.1±1.3%降至 39.2±1.5%；p=0.006），但 BF%的前后测量值的变化在两组之间没有差异（p=0.067）。总之，12 周的 SIT 可有效提高肥胖青少年的 CRF，并降低 BF%。
