五项肌肉的运动单位数量指数和运动单位大小指数的参考值。

Reference values for the motor unit number index and the motor unit size index in five muscles.

机构信息

Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.

出版信息

Muscle Nerve. 2020 May;61(5):657-661. doi: 10.1002/mus.26837. Epub 2020 Feb 29.

DOI:10.1002/mus.26837

PMID:32068896

Abstract

INTRODUCTION

Few reference values have been established for the motor unit number index (MUNIX) and motor unit size index (MUSIX). In this study we aimed to investigate the features of MUNIX in healthy individuals for five muscles.

METHODS

We measured the MUNIX in the right abductor pollicis brevis (APB), abductor digiti minimi (ADM), biceps brachii (BB), tibialis anterior (TA), and trapezius (TR) muscles.

RESULTS

The study enrolled 76 male and 74 female participants. The mean MUNIX and mean MUSIX of the right APB, ADM, BB, TA, and TR muscles were 191.0 ± 43.6, 179.1 ± 38.8, 179.7 ± 36.2, 152.1 ± 38.8, and 166.1 ± 40.7; and 60.4 ± 12.5, 59.3 ± 13.7, 43.8 ± 11.5, 41.3 ± 10.7, and 49.1 ± 15.2, respectively. MUNIX in these five muscles was inversely related to age.

DISCUSSION

The establishment of reference values for MUNIX and MUSIX in five muscles may help in monitoring the progression of neuromuscular diseases.

摘要

简介

运动单位数量指数（MUNIX）和运动单位大小指数（MUSIX）的参考值较少。本研究旨在探讨 5 块肌肉中健康个体的 MUNIX 特征。

方法

我们测量了右侧拇指外展短肌（APB）、小指外展肌（ADM）、肱二头肌（BB）、胫骨前肌（TA）和斜方肌（TR）的 MUNIX。

结果

该研究纳入了 76 名男性和 74 名女性参与者。右侧 APB、ADM、BB、TA 和 TR 肌肉的平均 MUNIX 和平均 MUSIX 分别为 191.0±43.6、179.1±38.8、179.7±36.2、152.1±38.8 和 166.1±40.7；60.4±12.5、59.3±13.7、43.8±11.5、41.3±10.7 和 49.1±15.2。这 5 块肌肉的 MUNIX 与年龄呈负相关。