Localized muscle vibration reverses quadriceps muscle hypotrophy and improves physical function: a clinical and electrophysiological study
Localized muscle vibration reverses quadriceps muscle hypotrophy and improves physical function: a clinical and electrophysiological study
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DOI：
10.1097/mrr.0000000000000242
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发表时间：
2017-12-01
影响因子：
1.7
通讯作者：
Casale, Roberto
中科院分区：
文献类型：
--
作者：
Benedetti, Maria Grazia;Boccia, Gennaro;Casale, Roberto
股四头肌无力与膝关节骨关节炎（OA）有关。高频局部肌肉振动（LMV）最近被提出用于膝关节OA患者的股四头肌强化。本研究的目的是（a）研究高频LMV对膝关节OA患者股四头肌的临床有效性，（B）通过表面肌电图（sEMG）解开潜在机制。本随机、对照、单盲初步研究纳入了30例临床诊断为膝关节OA的患者，年龄在40 - 65岁之间。参与者被随机分配到两组：研究组通过商业设备VIBRA进行LMV治疗，专门用于肌肉强化（150 Hz），对照组接受神经肌肉电刺激治疗。采用西安大略和麦克马斯特大学骨关节炎指数、视觉踝关节评分、膝关节活动度、计时起身和行走试验和爬楼梯试验测量临床结果。为了评估肌肉激活和疲劳的变化，在持续等长收缩期间使用sEMG对20名患者的亚组进行了研究。LMV组在西安大略和麦克马斯特大学骨关节炎指数评分、视觉踝关节评分、计时起身和行走试验、爬楼梯试验和膝关节屈曲方面显示出显著变化。这些改善在接受神经肌肉电刺激治疗的患者中并不显著。sEMG分析表明，在LMV治疗组中II型肌纤维的参与增加。总之，本研究支持局部振动对膝关节OA患者肌肉功能和临床改善的有效性。
Quadriceps weakness has been associated with knee osteoarthritis (OA). High-frequency localized muscle vibration (LMV) has been proposed recently for quadriceps strengthening in patients with knee OA. The purpose of this study was (a) to investigate the clinical effectiveness of high-frequency LMV on quadriceps muscle in patients with knee OA and (b) to disentangle, by means of surface electromyography (sEMG), the underlying mechanism. Thirty patients, aged between 40 and 65 years, and clinically diagnosed with knee OA were included in this randomized, controlled, single-blinded pilot study. Participants were randomly assigned to two groups: a study group treated with LMV, specifically set for muscle strengthening (150Hz), by means of a commercial device VIBRA, and a control group treated with neuromuscular electrical stimulation. Clinical outcome was measured using the Western Ontario and McMaster Universities Osteoarthritis Index, Visual Analogue Scale, knee range of motion, Timed Up and Go test, and Stair climbing test. To assess changes in muscle activation and fatigue a subgroup of 20 patients was studied with the use of sEMG during a sustained isometric contraction. The LMV group showed a significant change in Western Ontario and McMaster Universities Osteoarthritis Index score, Visual Analogue Scale score, Timed Up and Go test, Stair Climbing Test, and knee flexion. These improvements were not significant in patients treated with neuromuscular electrical stimulation. sEMG analysis suggested an increased involvement of type II muscle fibers in the group treated with LMV. In conclusion, the present study supports the effectiveness of local vibration in muscle function and clinical improvement of patients with knee OA.