The aim of this study was to examine the effects of 5 days of anodal-transcranial direct current stimulation (a-tDCS) over the primary motor cortex (M1) on lower extremity functional performance in healthy elderly people. This was a randomized, double-blinded, sham-controlled study whereby 32 healthy older individuals participated in two groups. The intervention group received 20 min of a-tDCS (1 mA) over the M1 on five consecutive days. The sham group received the same stimulation, but the tDCS device was turned off after 30 s of stimulation. Participants were asked to perform the Timed Up and Go (TUG), 30-s Chair Stand Test (30-s CST), and a Modified Figure of Eight Walk Test (MFEWT) on the first day before tDCS application, immediately, 30 min, and 1 week after the last session of stimulation. Results of the a-tDCS group showed that most of the test values had significant changes in post-test assessments compared to the pre-test (p < 0.05). When comparing the anodal and sham tDCS groups, the results showed a significant improvement in TUG and time-MFEWT immediately after (p = 0.02, p = 0.01), 30 min after (p = 0.04, p = 0.01) and 1 week after the last session of stimulation (p = 0.01, p = 0.01). Improvements in performance of the 30-s CST and the number of steps-MFEWT were not significant, except at 1 week after the last session for the steps-MFEWT (p = 0.04). The application of 20 min a-tDCS over the M1 for 5 consecutive days improves lower extremity functional performance in the healthy older participants.

这项研究的目的是检查健康的老年人在原发性运动皮层（M1）上进行5天的阳极经颅直流电刺激（a-tDCS）对下肢功能表现的影响。这是一项随机，双盲，假对照的研究，其中32名健康的老年人参加了两组。干预组连续五天在M1上接受了20分钟的a-tDCS（1 mA）。假手术组接受了相同的刺激，但在刺激30 s后关闭了tDCS设备。要求参与者在tDCS申请开始前的第一天进行定时起跑（TUG），30 s椅子站立测试（CST 30 s）和8步修正测试图（MFEWT）。 ，以及最后一次刺激后的1周。p  ＜0.05）。比较阳极和假手术的tDCS组时，结果显示，紧接后（p  = 0.02，p  = 0.01），术后30分钟（p  = 0.04，p  = 0.01）和术后1周，TUG和time-MFEWT均有显着改善。最后一次刺激（p  = 0.01，p  = 0.01）。30 s CST的性能和步骤数-MFEWT的改善不显着，除了步骤-MFEWT的最后一次会话后第1周（p  = 0.04）。在M1上连续20天使用a-tDCS 20分钟可改善健康老年参与者的下肢功能表现。