周期测力法中肌电图疲劳阈值的重测信度。

Test-retest reliability of the electromyographic fatigue threshold for cycle ergometry.

作者信息

Mahmutović Selim, Sprout Erick Y, Fontaine John C, Buskirk Travis M, Galen Sujay S, Malek Moh H

机构信息

Integrative Physiology of Exercise Laboratory.

Physical Therapy Program, Eugene Applebaum College of Pharmacy and Health Sciences, Department of Health Care Sciences, Wayne State University, Detroit, Michigan, USA.

出版信息

Muscle Nerve. 2016 May;53(5):803-7. doi: 10.1002/mus.24915. Epub 2016 Mar 4.

DOI:10.1002/mus.24915

PMID:26385259

Abstract

INTRODUCTION

The purpose of this study was to determine the intersession reliability of the electromyographic fatigue threshold (EMGFT ) for cycle ergometry.

METHODS

On separate occasions, 10 healthy, college-aged men performed an incremental test to voluntary exhaustion on a cycle ergometer. The EMG amplitude vs. time relationships for each power output from the quadriceps femoris muscles were analyzed using linear regression. EMGFT was defined operationally as the average of the highest power output that resulted in a non-significant slope coefficient (P > 0.05) and the lowest power output that resulted in a significant (P < 0.05) positive slope coefficient. The EMGFT values for trials 1 and 2 were used to calculate the intraclass correlation coefficient (ICC).

RESULTS

Overall, the reliability of the EMGFT (ICC2,1 = 0.85; 95% confidence interval 0.49-0.96) was in the "excellent" category.

CONCLUSIONS

The EMGFT for cycle ergometry is a reliable measure for assessing muscular fatigue.

摘要

引言

本研究的目的是确定自行车测力计肌电图疲劳阈值（EMGFT）在不同测试时段之间的可靠性。

方法

10名健康的大学生男性在不同时间分别在自行车测力计上进行递增测试，直至自愿疲劳。使用线性回归分析股四头肌在每个功率输出下的肌电图幅度与时间的关系。EMGFT在操作上被定义为导致斜率系数不显著（P > 0.05）的最高功率输出与导致显著（P < 0.05）正斜率系数的最低功率输出的平均值。试验1和试验2的EMGFT值用于计算组内相关系数（ICC）。