Association of Motor Unit Number and Size Estimation With Muscle Thickness and Strength in Healthy Young, Middle-Aged, and Older Adults.

Kaito Igawa, Ryosuke Takeda, Taichi Nishikawa, Marino Karaki, Masahiro Kuniki, Yu-Ichi Noto, Kohei Watanabe

Graduate School of Health and Sport Sciences, Chukyo University, Toyota, Japan.Graduate School of Health and Sport Sciences, Chukyo University, Toyota, Japan. · pubmed

Paper

Abstract

Although age-related declines in muscle mass and strength are believed to result from changes in motor unit number and size, the association of motor unit number and size with muscle mass and strength in healthy individuals remains unclear. We aim to examine the association of motor unit number estimation (MUNE) and motor unit size estimation (MUSE) of abductor pollicis brevis (APB) with muscle thickness of APB and maximal pinch-grip strength among young, middle-aged, and older adults.

The following analysis is generated by AI and may contain errors. It is separate from the authors’ abstract and is not peer review.

Research summary

The paper claims that there is an association between motor unit number and size with muscle thickness and strength across different age groups. This research is relevant as it explores the underlying mechanisms of muscle decline with aging, which is a critical aspect of understanding and potentially addressing age-related muscle deterioration.

Author of this paper? Send a correction.