Liu Zhenyue, Sawada Shuji, Deng Pengyu, Naito Hisashi, Machida Shuichi
Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan.
Institute of Health and Sports Science & Medicine, Juntendo University, Chiba 270-1695, Japan.
Sports (Basel). 2025 Jan 7;13(1):8. doi: 10.3390/sports13010008.
This study aimed to investigate the effects of a 12-week body-weight-based resistance training program on balance ability and fear of falling in community-dwelling older women.
Twenty-three older women were assigned to either an intervention group that performed the low-load resistance training with slow movement using the body weight (LRT group; = 12) or a control group (CON group; = 11). The LRT group participated in the exercise session twice weekly for 12 weeks, while the CON group maintained their daily routine. The 30 s chair stand test (CS-30) was applied to measure lower-extremity muscle strength, balance ability was evaluated using one-leg standing tests with eyes open (OLST-O) and closed (OLST-C), and fear of falling among all participants was assessed using the Falls Efficacy Scale International (FES-I) before (pre) and after (post) the intervention. A two-way analysis of variance with repeated measures [group (LRT and CON) × time (pre and post)] was carried out to evaluate the intervention effects.
Significant interactions were observed in the CS-30 (F = 9.503, < 0.01, ηp2 = 0.312), OLST-O (F = 5.211, < 0.05, ηp2 = 0.199), and OLST-C (F = 5.257, < 0.05, ηp2 = 0.200), though significant simple main effects from pre to post were observed only in the LRT group. The CS-30 scores (pre: 19.8 ± 3.8 times, post: 25.5 ± 5.6 times; < 0.001), OLST-O time (pre: 78.8 ± 35.8 s, post: 96.2 ± 29.9 s; < 0.01), and OLST-C time (pre: 10.2 ± 5.9 s, post: 17.4 ± 12.2 s; < 0.01) were improved before and after the intervention. However, a significant interaction was not observed in FES-I (F = 1.335, = 0.261, ηp2 = 0.06).
The 12-week body-weight-based resistance training program enhanced lower-extremity muscle strength and balance ability but did not lessen the fear of falling in community-dwelling older women. The study findings offer relevant information for fall prevention in older adults.
本研究旨在探讨一项为期12周的基于体重的抗阻训练计划对社区居住老年女性平衡能力和跌倒恐惧的影响。
23名老年女性被分配到干预组（12人）或对照组（11人）。干预组进行低负荷体重抗阻慢动作训练（LRT组），对照组维持日常活动。干预前后，采用30秒坐立试验（CS-30）测量下肢肌肉力量，睁眼单腿站立试验（OLST-O）和闭眼单腿站立试验（OLST-C）评估平衡能力，采用国际跌倒效能量表（FES-I）评估所有参与者的跌倒恐惧。采用重复测量的双向方差分析[组（LRT和CON）×时间（干预前和干预后）]评估干预效果。
CS-30（F = 9.503，P < 0.01，ηp2 = 0.312）、OLST-O（F = 5.211，P < 0.05，ηp2 = 0.199）和OLST-C（F = 5.257，P < 0.05，ηp2 = 0.200）存在显著交互作用，不过仅在LRT组观察到干预前至干预后的显著简单主效应。干预前后CS-30得分（干预前：19.8±3.8次，干预后：25.5±5.6次；P < 0.001）、OLST-O时间（干预前：78.8±35.8秒，干预后：96.2±29.9秒；P < 0.01）和OLST-C时间（干预前：10.2±5.9秒，干预后：17.4±12.2秒；P < 0.01）均有所改善。然而，FES-I未观察到显著交互作用（F = 1.335，P = 0.261，ηp2 = 0.06）。
为期12周的基于体重的抗阻训练计划增强了社区居住老年女性的下肢肌肉力量和平衡能力，但并未减轻其跌倒恐惧。研究结果为老年人预防跌倒提供了相关信息。
