Nogueira Rossana C, Weeks Benjamin K, Beck Belinda
1 Griffith University.
Pediatr Exerc Sci. 2017 Nov 1;29(4):486-495. doi: 10.1123/pes.2017-0044. Epub 2017 Oct 17.
To determine the 12-month maintenance of a 9-month, thrice-weekly, 10-minute high-intensity exercise program, delivered in schools, on bone and other health-related performance variables in prepubertal children.
All participants (N = 311) of the CAPO kids trial (testing times T1-T2) were contacted to undergo retesting (T3) of all original measures-including weight, standing and sitting height, calcaneal broadband ultrasound attenuation (Achilles, GE), and stiffness index (Achilles, GE)-waist circumference, resting heart rate, blood pressure, vertical jump, and aerobic capacity. Maturity was determined by estimating age of peak height velocity using sex-specific regression equations.
A total of 240 children [12.3 (0.6) y old] were included in the current study (77% of initial follow-up sample at T2). Between the T2 and T3 time points, both exercise (EX) group and control (CON) group increased broadband ultrasound attenuation (EX: 5.6%, P ≤ .001; CON: 6.5%, P ≤ .001), stiffness index (EX: 7.3%, P ≤ .001; CON: 5.2%, P ≤ .001), vertical jump (EX: 5.9%, P ≤ .001; CON: 6.3%, P ≤ .001), estimated maximal oxygen consumption (EX: 13.3%, P ≤ .001; CON: 12.1%, P ≤ .001), and reduced waist circumference (EX: -5.2%, P ≤ .001; CON: -5.6%, P ≤ .001), with no between-group differences in the magnitude of those changes. No differences were detected in absolute values between groups at T3.
Although the statistically significant differences observed between groups following the intervention were no longer significant 1 year after withdrawal of the intervention, the between-group similarities in growth trajectories of those parameters could suggest that some benefit of the intervention for bone health, waist circumference, and physical performance endured.
确定一项为期9个月、每周三次、每次10分钟的高强度运动计划在学校实施12个月后，对青春期前儿童骨骼及其他与健康相关的表现变量的维持效果。
联系CAPO儿童试验（测试时间为T1 - T2）的所有参与者（N = 311）进行所有原始测量指标的重新测试（T3），包括体重、站立和坐高、跟骨宽带超声衰减（跟腱，通用电气公司）、硬度指数（跟腱，通用电气公司）、腰围、静息心率、血压、垂直跳跃和有氧能力。通过使用特定性别的回归方程估计身高速度峰值年龄来确定成熟度。
本研究共纳入240名儿童[12.3（0.6）岁]（占T2时初始随访样本的77%）。在T2和T3时间点之间，运动（EX）组和对照组的宽带超声衰减均增加（EX组：5.6%，P≤0.001；CON组：6.5%，P≤0.001），硬度指数增加（EX组：7.3%，P≤0.001；CON组：5.2%，P≤0.001），垂直跳跃增加（EX组：5.9%，P≤0.001；CON组：6.3%，P≤0.001），估计最大耗氧量增加（EX组：13.3%，P≤0.001；CON组：12.1%，P≤0.001），腰围减小（EX组：-5.2%，P≤0.001；CON组：-5.6%，P≤0.001），这些变化的幅度在组间无差异。在T3时，组间绝对值未检测到差异。
尽管干预后组间观察到的统计学显著差异在干预停止1年后不再显著，但这些参数生长轨迹的组间相似性可能表明干预对骨骼健康、腰围和身体表现有一些持久的益处。
