Muscle strength and its relationship with skeletal muscle mass indices as determined by segmental bio-impedance analysis

Alizadehkhaiyat, Omid and Hawkes, David H. and Kemp, Graham J. and Howard, Anthony and Frostick, Simon P. (2014) Muscle strength and its relationship with skeletal muscle mass indices as determined by segmental bio-impedance analysis. European journal of applied physiology, 114. pp. 117-185. ISSN 1439-6319

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Official URL: http://link.springer.com/article/10.1007%2Fs00421-...

Abstract

PURPOSE: Despite increasing interest in bio-impedance analysis (BIA) for estimation of segmental skeletal muscle mass (SMM), published results have not been entirely convincing. Furthermore, a better understanding of the relationship between muscle strength and SMM will be useful in interpreting outcomes of physical/training interventions particularly in groups with diverse body sizes (e.g. men vs women). This study aimed to measure SMM in the upper body (upper extremity and torso), to determine its correlation with muscle strength and to examine the effects of gender on muscle strength-muscle mass relationship. METHODS: Segmental (upper extremity and torso) SMM and muscle strength in five distinct shoulder planes (forward flexion, abduction in scapular plane, abduction in coronal plane, internal and external rotation) were measured in 45 healthy participants (22 males, 23 females) with mean age 30.3 years. Statistical analysis included independent t tests, Pearson correlation, and multiple regression analysis. RESULTS: Men and women differed significantly in body mass (BMI: 25.9 ± 4.3 vs 23 ± 3.6) and SMM (p < 0.01). A strong relationship correlation was found between the five shoulder strength measurements and upper extremity SMM (r = 0.66-0.80, p < 0.01), which was not affected by gender. There was a significant gender difference (p < 0.01) in absolute shoulder strength, but not after normalisation to the SMM. CONCLUSION: BIA-estimated SMM of upper extremity and torso was highly correlated with upper extremity (shoulder) strength independent of gender. SMM may, therefore, be useful for the normalisation of muscle strength allowing size-independent comparisons of muscle strength in individuals with diverse physical characteristics.

Item Type: Article
Additional Information and Comments: Originally published in the European Journal of Applied Physiology. “The final publication is available at Springer via http://dx.doi.org/10.1007/s00421-013-2764-y”.
Faculty / Department: Faculty of Science > School of Health Sciences
Depositing User: Anna Kirpichnikova
Date Deposited: 02 Nov 2015 18:40
Last Modified: 22 Feb 2016 14:53
URI: http://hira.hope.ac.uk/id/eprint/458

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