中低频神经肌肉电刺激对股四头肌的作用
NEUROMUSCULAR ELECTRICAL STIMULATION OF MEDIUM AND LOW FREQUENCY ON THE QUADRICEPS FEMORIS.
作者信息
Pinfildi Carlos Eduardo, Andraus Rodrigo Antonio Carvalho, Iida Ligia Megumi, Prado Rodrigo Paschoal
机构信息
Universidade Federal de São Paulo (UNIFESP), Department of Movement Health and Science, Santos, SP, Brazil.
Universidade Pitágoras Unopar (UNOPAR), Program stricto sensu in Rehabilitation Science, Londrina, PR, Brazil.
出版信息
Acta Ortop Bras. 2018;26(5):346-349. doi: 10.1590/1413-785220182605178164.
OBJECTIVE
The purpose of this study was to investigate the effects of neuromuscular electrical stimulation (NMES) in different frequencies on the quadriceps femoris. A randomized, controlled, blind cross-sectional study.
METHODS
Thirty subjects (12 men and 18 women), with an average age of 24.67 years, weight of 65.62 kg and height of 1.69 m were evaluated. Three random test conditions were applied: maximum voluntary isometric contraction (MVIC), maximum voluntary isometric contraction with medium frequency current (MVIC-MF) and maximum voluntary isometric contraction with low frequency current (MVIC-LF). Four MVICs were applied in each situation. The time between different isometric contraction types was 90 seconds while the time between the same conditions of contraction was 10 seconds.
RESULTS
Two-way ANOVA test showed that MVIC-MF had higher values for peak torque than MVIC-LF (p=0.02). Significant statistical results were found when comparing MVIC-MF and MVIC (p=0.03), but not for MVIC and MVIC-LF (p=0.52).
CONCLUSION
Maximum voluntary isometric contraction associated with medium-frequency electrical stimulation was more effective than other NMES conditions.
目的
本研究旨在探讨不同频率的神经肌肉电刺激（NMES）对股四头肌的影响。一项随机、对照、盲法横断面研究。
方法
对30名受试者（12名男性和18名女性）进行评估，平均年龄24.67岁，体重65.62千克，身高1.69米。应用三种随机测试条件：最大自主等长收缩（MVIC）、中频电流最大自主等长收缩（MVIC-MF）和低频电流最大自主等长收缩（MVIC-LF）。每种情况下进行四次MVIC测试。不同等长收缩类型之间的时间间隔为90秒，相同收缩条件之间的时间间隔为10秒。
结果
双向方差分析表明，MVIC-MF的峰值扭矩值高于MVIC-LF（p = 0.02）。比较MVIC-MF和MVIC时发现有显著统计学结果（p = 0.03），但MVIC和MVIC-LF之间无显著差异（p = 0.52）。
结论
与中频电刺激相关的最大自主等长收缩比其他NMES条件更有效。
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