Institute of Exercise and Health Sciences, University of Basel, Basel, Switzerland.
J Strength Cond Res. 2011 Jun;25(6):1759-66. doi: 10.1519/JSC.0b013e3181da7886.
The prevalence of sustaining a fall is particularly high in children. Deficits in postural control and muscle strength are important intrinsic fall risk factors. Thus, the purpose of this study was to investigate the impact of balance training (BT) followed by detraining on postural control, plantar flexor strength, and jumping height in prepubertal children. Thirty grade 1 school children participated in this study and were assigned to either an intervention class (INT, n = 15, age 6.7 ± 0.5 years) or a control class (n = 15, age 6.6 ± 0.5 years). The INT participated in 4 weeks of BT (3 per week) integrated in their physical education lessons. Pre, post, and follow-up tests included the measurements of postural sway on a balance platform, maximal torque and rate of force development of the plantar flexors on an isokinetic device, and jumping height on a force platform. The significance level was set at p < 0.05. Balance training resulted in tendencies in terms of small to medium interaction effects yet not statistically significant improvements in postural sway (f = 0.14; p > 0.05), force production of the plantar flexors (f = 0.18; p> 0.05), and jumping height (f = 0.25; p> 0.05). Immaturity of the postural control system and deficits in attentional focus during practice of balance exercises could be responsible for the nonsignificant findings in this study. Thus, other training regimen (e.g., resistance training) should be applied alone or in combination with BT, which may have the potential to promote balance and strength in children.
儿童跌倒的发生率特别高。姿势控制和肌肉力量的缺陷是重要的内在跌倒风险因素。因此,本研究的目的是探讨平衡训练(BT)后再训练对青春期前儿童姿势控制、跖屈肌力量和跳跃高度的影响。30 名一年级学生参加了这项研究,并被分配到干预组(INT,n = 15,年龄 6.7 ± 0.5 岁)或对照组(n = 15,年龄 6.6 ± 0.5 岁)。INT 参加了 4 周的 BT(每周 3 次),融入了他们的体育课。预、后和随访测试包括平衡平台上的姿势摆动测量、等速装置上的跖屈肌最大扭矩和力发展率以及力平台上的跳跃高度测量。显著性水平设为 p < 0.05。平衡训练导致了小到中等的交互效应的趋势,但在姿势摆动(f = 0.14;p > 0.05)、跖屈肌力量产生(f = 0.18;p > 0.05)和跳跃高度(f = 0.25;p > 0.05)方面没有统计学上的显著改善。姿势控制系统的不成熟和在平衡练习过程中注意力集中的缺陷可能是本研究中无显著发现的原因。因此,其他训练方案(例如,阻力训练)应单独或与 BT 结合应用,这可能有潜力促进儿童的平衡和力量。