ObjectiveTo analyze the effects of lower limb muscle strengthening on interface pressure (IP), static stiffness index (SSI), dynamic stiffness index (DSI), and walking pressure amplitude (WPA) in older adults undergoing inelastic compression therapy.MethodForty-three healthy older adults of both sexes (Age: 66.2 ± 4.4 years) met the eligibility criteria and completed all stages of the study (Resistance Training – RT: N = 20; Control – CONT: N = 23). Body composition, strength and functional mobility of lower limbs, IP, SSI, DSI, and WPA were evaluated before and after intervention.ResultsThe two-way ANOVA with repeated measures demonstrated a significant time-group interaction effect on muscular strength for 1-RM [F (1, 41) = 21.091; p ≤ 0.001], IP in the orthostatic position [F (1, 41) = 5.124; p ≤ 0.05], minimum WPA [F (1, 41) = 10.999; p ≤ 0.05], maximum WPA [F (1, 41) = 8.315; p ≤ 0.05], DSI minimum (F (1, 41) = 4.608; p ≤ 0.05), DSI maximum (F (1, 41) = 8.926; p ≤ 0.05), and on the delta DSI (F (1, 41) = 7.891; p ≤ 0.05).ConclusionsIn RT group, the increase in lower limb muscle strength was accompanied by an increase in IP in foot dorsiflexion and plantar flexion maneuvers, both in the standing position (DSI) and during gait (WPA).

中文翻译：

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下肢肌肉强化对接受非弹性压缩的老年人界面压力的影响：随机对照临床试验

目的分析下肢肌力强化对接受非弹性加压治疗的老年人界面压力（IP）、静态刚度指数（SSI）、动态刚度指数（DSI）和行走压力幅度（WPA）的影响。方法以43名健康老年人为研究对象。男女成年人（年龄：66.2 ± 4.4 岁）均符合资格标准并完成了研究的所有阶段（阻力训练 - RT：N = 20；对照 - CONT：N = 23）。在干预前后评估身体成分、下肢力量和功能活动度、IP、SSI、DSI 和 WPA。结果重复测量的双向方差分析表明 1-RM 对肌肉力量存在显着的时间组交互作用。 F (1, 41) = 21.091; p ≤ 0.001]，IP 处于直立位置 [F (1, 41) = 5.124；p ≤ 0.05]，最小 WPA [F (1, 41) = 10.999；p ≤ 0.05]，最大 WPA [F (1, 41) = 8.315；p ≤ 0.05]，DSI 最小值 (F (1, 41) = 4.608；p ≤ 0.05)，DSI 最大值 (F (1, 41) = 8.926；p ≤ 0.05)，以及增量 DSI (F (1, 41) ) = 7.891; p ≤ 0.05).结论在 RT 组中，下肢肌力的增加伴随着足背屈和跖屈动作中 IP 的增加，无论是在站立位 (DSI) 还是在步态 (WPA) 中。