Muscle weakness is associated with negative outcomes, in addition to being related to the pathogenesis of frailty and functional disability in the older individuals. Muscle strength and functionality are considered biomarkers of aging. Progressive resistance training (PRT) is a type of training that has been the subject of studies as it presents itself as a therapeutic option to fight the reduction of muscle strength and functionality in older individuals. However, few studies have assessed the clinically relevant gains in the levels of muscle strength and functionality of older individuals after PRT, in addition to the need of testing new PRT approaches, including individualization and periodization in training programs. Therefore, this article aims to assess the effect of an individual and periodized PRT protocol on handgrip strength (HS) and functionality in older individuals. Thus, the study sample included 69 older individuals, divided into 2 groups: case (n = 41) and control (n = 28). The case group participated in a PRT protocol for 12 weeks, with two weekly sessions. When compared to the control group, which received only health education, the individuals in the case group had a greater magnitude of improvement in all variables related to the assessed functionality (Timed up and go test, gait speed, and HS), proving the applicability of the assessed protocol to improve strength and functionality in the older individuals of a community.

中文翻译：

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渐进式阻力训练对社区老年人功能和握力的影响：一项准实验研究

除了与老年人虚弱和功能障碍的发病机制有关外，肌肉无力与负面结果有关。肌肉力量和功能被认为是衰老的生物标志物。渐进式阻力训练 (PRT) 是一种一直是研究主题的训练，因为它作为一种治疗选择来对抗老年人肌肉力量和功能的降低。然而，除了需要测试新的 PRT 方法（包括训练计划中的个体化和周期化）之外，很少有研究评估 PRT 后老年人肌肉力量和功能水平的临床相关收益。所以，本文旨在评估个体和周期性 PRT 方案对老年人握力 (HS) 和功能的影响。因此，研究样本包括 69 名老年人，分为 2 组：病例 (n  = 41) 和控制 ( n  = 28)。病例组参加了为期 12 周的 PRT 方案，每周有两次会议。与仅接受健康教育的对照组相比，病例组中的个体在与评估的功能相关的所有变量（Timed up and go test、步态速度和 HS）方面都有更大的改善，证明了适用性评估的协议，以提高社区中老年人的力量和功能。