A single center report of MScanFit motor unit number estimation in five muscles of healthy subjects

Xiaohui Song; Lijun Cui; Ya Zong; Maoqi Chen; Zhiyuan Lu; Qing Xie; Ping Zhou

doi:10.3389/fnhum.2022.1078848

A single center report of MScanFit motor unit number estimation in five muscles of healthy subjects

Front Hum Neurosci. 2023 Jan 17:16:1078848. doi: 10.3389/fnhum.2022.1078848. eCollection 2022.

Authors

Xiaohui Song¹, Lijun Cui¹, Ya Zong¹, Maoqi Chen², Zhiyuan Lu², Qing Xie¹, Ping Zhou²

Affiliations

¹ Department of Rehabilitation, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
² School of Rehabilitation Science and Engineering, University of Health and Rehabilitation Sciences, Qingdao, Shandong, China.

Abstract

The objective of this study was to estimate the number of motor units in 5 muscles from healthy individuals using the MScanFit program based on compound muscle action potential (CMAP) scan recordings. The examined muscles included first dorsal interosseous (FDI), abductor pollicis brevis (APB), abductor digiti minimi (ADM), second lumbrical (SL), and abductor hallucis (AH). CMAP scans were recorded from a total of 24 healthy participants. Motor unit number estimation (MUNE) values were derived from the MScanFit program. The average MUNE was 136.1 ± 31.1 (mean ± standard deviation) for the FDI, 134.9 ± 37.4 for the APB, 127.3 ± 32.3 for the ADM, 39.6 ± 8.3 for the SL, and 143.9 ± 28.9 for the AH muscles. Findings of the study provide useful information of the MScanFit MUNE for the examined muscles of healthy subjects from a single center.

Keywords: CMAP scan; MScanFit; compound muscle action potential (CMAP); motor unit number estimation (MUNE); single center.

Grants and funding

This study was supported by Shanghai Municipal Key Clinical Specialty under grant number shslczdzk02701; Shanghai Municipal Health Commission under grant number 202040465; the Natural Science Foundation of Shandong Province under grant numbers ZR2020KF012, ZR2021QH267, and ZR2021QH053; and the National Natural Science Foundation of China under grant number 82102179.