Wolf S L, Barnhart H X, Ellison G L, Coogler C E
Department of Rehabilitation Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA.
Phys Ther. 1997 Apr;77(4):371-81; discussion 382-4. doi: 10.1093/ptj/77.4.371.
This study explored whether two exercise programs would affect the ability to minimize postural sway of 72 relatively inactive, older subjects who participated in the Atlanta FICSIT trial.
Subjects were randomly assigned to (1) a computerized balance training group, (2) a tai chi group, or (3) an educational group serving as a control for exercise. Each group consisted of 24 members.
All subjects were evaluated under four postural conditions before, immediately after, and 4 months following their respective interventions, each of which was given over 15 weeks.
Platform balance measures revealed greater stability after training among subjects in the balance training group but little change in stability among subjects in the tai chi and educational group. Subjects in the tai chi group were less afraid of falling after training compared with subjects in other groups with similar covariates.
Unlike computerized balance training, tai chi does not improve measures of postural stability. Because tai chi delayed onset to first or multiple falls in older individuals, this effect does not appear to be associated with measures of enhanced postural stability. Tai chi may gain its success, in part, from promoting confidence without reducing sway rather than primarily facilitating a reduction in sway-based measures.
本研究探讨了两种锻炼方案是否会影响72名相对缺乏运动的老年受试者减少姿势晃动的能力,这些受试者参与了亚特兰大FICSIT试验。
受试者被随机分配到(1)计算机化平衡训练组,(2)太极拳组,或(3)作为运动对照组的教育组。每组由24名成员组成。
所有受试者在各自干预前、干预后即刻以及干预后4个月,于四种姿势条件下接受评估,每种干预持续15周。
平台平衡测量显示,平衡训练组受试者训练后稳定性增强,而太极拳组和教育组受试者的稳定性变化不大。与具有相似协变量的其他组受试者相比,太极拳组受试者训练后对跌倒的恐惧减轻。
与计算机化平衡训练不同,太极拳并不能改善姿势稳定性指标。由于太极拳延缓了老年人首次或多次跌倒的发生,这种效果似乎与姿势稳定性增强指标无关。太极拳的成功可能部分源于增强信心而非减少晃动,而不是主要促进基于晃动指标的降低。