Childhood muscle morphology and strength: Alterations over six months of growth

Journal article


Pitcher, Christian Andrew, Elliott, Catherine M., Williams, Sian A., Licari, Melissa K., Kuenzel, Alex, Shipman, Peter J., Valentine, Jane P. and Reid, Siobhan L.. (2012). Childhood muscle morphology and strength: Alterations over six months of growth. Muscle & Nerve. 46(3), pp. 360 - 366. https://doi.org/10.1002/mus.23326
AuthorsPitcher, Christian Andrew, Elliott, Catherine M., Williams, Sian A., Licari, Melissa K., Kuenzel, Alex, Shipman, Peter J., Valentine, Jane P. and Reid, Siobhan L.
Abstract

Introduction: The purpose of this study was to establish the nature and stability of the strength-size relationship for the knee flexors and extensors across a 6-month period of childhood growth. Methods: Nineteen typically developing children aged 5–11 years underwent lower limb magnetic resonance imaging (MRI) and dynamometry strength assessments on 2 occasions, 6 months apart. Muscle volume (MV) and maximum anatomical cross-sectional area (aCSA) for the knee flexors and extensors were determined using MRI analysis software. Isokinetic dynamometry determined corresponding isometric and isokinetic strength. Results: Strong correlations were found between muscle size and strength for both the knee flexors and extensors (r = 0.84–0.90; P < 0.01). Furthermore, the ratio of strength to muscle size remained consistent across 6 months of prepubescent growth. Conclusions: Increases in thigh muscle strength were relative to those in muscle size, suggesting that muscle growth may play an important role in the development of strength during childhood.

Keywordsanatomical cross-sectional area; children; magnetic resonance imaging; muscle volume; strength
Year2012
JournalMuscle & Nerve
Journal citation46 (3), pp. 360 - 366
PublisherJohn Wiley & Sons, Inc.
ISSN0148-639X
Digital Object Identifier (DOI)https://doi.org/10.1002/mus.23326
Scopus EID2-s2.0-84865341219
Page range360 - 366
Research GroupSchool of Allied Health
Publisher's version
File Access Level
Controlled
Place of publicationUnited Kingdom
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