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Abe T, Loenneke JP. Handgrip strength dominance is associated with difference in forearm muscle size. J Phys Ther Sci. 2015;27(7):2147-9doi: 10.1589/jpts.27.2147.
Abe, T., & Loenneke, J. P. (2015). Handgrip strength dominance is associated with difference in forearm muscle size. Journal of physical therapy science, 27(7), 2147-9. https://doi.org/10.1589/jpts.27.2147
Abe, Takashi, and Loenneke, Jeremy P. "Handgrip strength dominance is associated with difference in forearm muscle size." Journal of physical therapy science vol. 27,7 (2015): 2147-9. doi: https://doi.org/10.1589/jpts.27.2147
Abe T, Loenneke JP. Handgrip strength dominance is associated with difference in forearm muscle size. J Phys Ther Sci. 2015 Jul;27(7):2147-9. doi: 10.1589/jpts.27.2147. Epub 2015 Jul 22. PMID: 26311942; PMCID: PMC4540837.
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J Phys Ther Sci. 2015 Jul;27(7):2147-9. doi: 10.1589/jpts.27.2147. Epub 2015 Jul 22.

Handgrip strength dominance is associated with difference in forearm muscle size.

Journal of physical therapy science

Takashi Abe, Jeremy P Loenneke

Affiliations

  1. Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, School of Applied Sciences, The University of Mississippi, USA ; Department of Sports and Life Sciences, National Institute of Fitness and Sports in Kanoya, Japan.
  2. Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, School of Applied Sciences, The University of Mississippi, USA.

PMID: 26311942 PMCID: PMC4540837 DOI: 10.1589/jpts.27.2147

Abstract

[Purpose] It is unknown whether handgrip strength dominance is related to the size of the forearm flexor muscles. The purpose of the present study was to investigate the relationship between side-by-side differences in handgrip strength and forearm muscle thickness. [Subjects] Thirty-one young women (26 right handed and 5 left handed) between the ages of 20 and 33 years volunteered to participate. [Methods] Two muscle thicknesses (forearm-ulna and forearm-radius muscle thicknesses) were measured using B-mode ultrasound at the anterior forearm on both sides of the body. Handgrip strength was also measured on both sides. [Results] The side-by-side difference in handgrip strength was 10.2% for the right-handed group, meaning the right hand was stronger. However, the left hand of the left-handed group was 7.8% stronger compared with their right hand. There was a significant positive correlation between side-by-side differences in handgrip strength and forearm-ulna muscle thickness (r = 0.765) and between handgrip strength and forearm-radius muscle thickness (r = 0.622). [Conclusion] Our results indicate that side-by-side differences in forearm muscle size may strongly contribute to handgrip strength dominance.

Keywords: B-mode ultrasound; Handgrip strength; Muscle thickness

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