Resistance training (RT) is considered a viable strategy to enhance the autonomy and functionality of older populations. We randomized 49 older women (64.2 ± 3.8) into one of two groups: an intervention group (IG) (n = 29) that performed regimented RT or a nontraining control group (CG) (n = 20). The RT protocol was carried out three times a week for both the upper and lower limbs over a 12-week study period. A 30-second arm flexion test was used to test upper limb endurance and a 30-second chair stand test was used to analyze lower limb endurance. Dynamic balance was tested by a Y balance test normalized by leg length. A Soda Pop test was employed to analyze coordination. Results showed significant improvements in IG versus CG in both upper limb (19.50 ± 1.52 vs. 11.40 ± 2.87, p = 0.001) and lower limb muscular endurance (14.90 ± 3.10 vs. 26.56 ± 3.17, p = 0.001). Moreover, the training group showed superior improvements in anterior and posterolateral balance compared to CG (63.9% ± 3.1% to 70.2 ± 2.1 and 88.1 ± 3.9 to 94.2 ± 2.7 with p = 0.001, respectively). There were no significant differences in coordination outcomes between groups. In conclusion, we demonstrate that RT is effective in developing muscular endurance and dynamic balance in postmenopausal women, but does not influence muscular coordination in the measures studied. Study registered in the Brazilian Registry Clinical Trials Registry (No. RBR-7MZ2KR).

中文翻译：

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12周阻力训练对老年妇女运动协调和动态平衡的影响

阻力训练 (RT) 被认为是增强老年人群自主性和功能性的可行策略。我们将 49 名老年女性 (64.2 ± 3.8) 随机分为两组： 进行有规律的放疗的干预组 (IG) ( n = 29) 或非训练对照组 (CG) ( n  = 20)。在为期 12 周的研究期间，每周对上肢和下肢进行 3 次 RT 方案。30秒手臂屈曲测试用于测试上肢耐力，30秒椅架测试用于分析下肢耐力。通过按腿长标准化的 Y 平衡测试来测试动态平衡。使用 Soda Pop 测​​试来分析协调。结果显示两个上肢的 IG 与 CG 显着改善（19.50 ± 1.52 与 11.40 ± 2.87，p  = 0.001) 和下肢肌肉耐力 (14.90 ± 3.10 vs. 26.56 ± 3.17, p  = 0.001)。此外，与 CG 相比，训练组在前外侧平衡方面表现出优异的改善（分别为 63.9% ± 3.1% 至 70.2 ± 2.1 和 88.1 ± 3.9 至 94.2 ± 2.7，p  = 0.001）。组间协调结果没有显着差异。总之，我们证明 RT 可有效提高绝经后妇女的肌肉耐力和动态平衡，但不会影响所研究的措施中的肌肉协调。在巴西注册临床试验注册（编号 RBR-7MZ2KR）注册的研究。