New ultrasonography-based method for predicting total skeletal muscle mass in male athletes

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Abstract

[Purpose] This study aimed 1. to assess whether a prediction model for whole body skeletal muscle mass that is based on a sedentary population is applicable to young male athletes, and 2. to develop a new skeletal muscle mass prediction model for young male athletes. [Subjects and Methods] The skeletal muscle mass of 61 male athletes was measured using magnetic resonance imaging (MRI. and estimated using a previous prediction model (Sanada et al., 2006. with B-mode ultrasonography. The prediction model was not suitable for young male athletes, as a significant difference was observed between the means of the estimated and MRI-measured skeletal muscle mass. Next, the same subjects were randomly assigned to a development or validation group, and a new model specifically relevant to young male athletes was developed based on MRI and ultrasound data obtained from the development group. [Results] A strong correlation was observed between the skeletal muscle mass estimated by the new model and the MRI-measured skeletal muscle mass (r=0.96. in the validation group, without significant difference between their means. No bias was found in the new model using Bland-Altman analysis (r=−0.25). [Conclusion] These results validate the new model and suggest that ultrasonography is a reliable method for measuring skeletal muscle mass in young male athletes.

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Toda, Y., Kimura, T., Taki, C., Kurihara, T., Homma, T., Hamaoka, T., & Sanada, K. (2016). New ultrasonography-based method for predicting total skeletal muscle mass in male athletes. Journal of Physical Therapy Science, 28(5), 1556–1559. https://doi.org/10.1589/jpts.28.1556

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