Vastus lateralis muscle volume prediction in early-adolescent boys.

The applicability of a simplified approach for muscle volume assessment, based on multiplying muscle length, maximum anatomical cross-sectional area (ACSAmax) and a muscle-specific shape factor, was investigated in the present study for the vastus lateralis muscle of early-adolescent boys. Muscle length, ACSAmax and volume were calculated from magnetic resonance image muscle reconstructions of early-adolescent athletes (n = 14) and untrained peers (n = 10). A cohort-specific shape factor was obtained from the ratio of the measured volume and the product of ACSAmax and muscle length, which did not differ significantly between trained and untrained adolescents despite significant differences in anthropometry and muscle dimensions. Further, muscle volumes assessed based on the cohort-specific shape factor did not differ significantly from the measured muscle volumes with an average root mean square difference (RMS) of 4.6%. Muscle volumes assessed with a shape factor previously reported for the vastus lateralis of adults were however significantly higher in comparison to the measured muscle volumes (P < 0.001; RMS = 8.5%). These results indicate that a cohort-specific shape factor should be applied when assessing vastus lateralis muscle volume in early-adolescents as muscle development from childhood to adulthood seems to be accompanied by changes in muscle shape. Copyright © 2021 Elsevier Ltd. All rights reserved.

Citation

Theresa Domroes, Gunnar Laube, Sebastian Bohm, Adamantios Arampatzis, Falk Mersmann. Vastus lateralis muscle volume prediction in early-adolescent boys. Journal of biomechanics. 2021 Nov 09;128:110735

Mesh Tags

PMID: 34536901

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