Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes

Abstract Phase angle (PhA), measured using bioelectrical impedance analysis, has recently gained attention as an indicator of muscle quality. This study investigates the relationship between PhA and body mass index (BMI) in nonathletic students and trained/developmental athletes. Seventy‐one male an...

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Main Authors: Kazushige Oshita, Akihisa Hikita, Ryota Myotsuzono, Satoki Murai
Format: Article
Language:English
Published: Wiley 2025-06-01
Series:Physiological Reports
Subjects:
Online Access:https://doi.org/10.14814/phy2.70412
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author Kazushige Oshita
Akihisa Hikita
Ryota Myotsuzono
Satoki Murai
author_facet Kazushige Oshita
Akihisa Hikita
Ryota Myotsuzono
Satoki Murai
author_sort Kazushige Oshita
collection DOAJ
description Abstract Phase angle (PhA), measured using bioelectrical impedance analysis, has recently gained attention as an indicator of muscle quality. This study investigates the relationship between PhA and body mass index (BMI) in nonathletic students and trained/developmental athletes. Seventy‐one male and 83 female students participated in the Normal group, while 159 male and 95 female students participated in the Sports group. Each group was further divided into two subgroups: those with a BMI higher (L‐Normal and L‐Sports) and lower (S‐Normal and S‐Sports) than the median BMI. Although fat‐free mass (FFM) did not differ significantly between the S‐Sports and L‐Normal groups, PhA was significantly higher in the S‐Sports group with a large effect size. While FFM was significantly higher in the L‐Sports group than in the S‐Sports group, PhA did not differ significantly with a small effect size. PhA and BMI showed no significant relationship in the Sports group, whereas a positive correlation was observed in the Normal group. These results suggest that PhA can be used to assess differences in competition and activity levels that are not represented by BMI or FFM. Furthermore, although PhA is related to BMI in the nonathletic populations, this relationship is not observed in trained/developmental‐level athletes.
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spelling doaj-art-babc56db6d1c48b99e8965d430e562142025-08-20T03:20:56ZengWileyPhysiological Reports2051-817X2025-06-011311n/an/a10.14814/phy2.70412Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletesKazushige Oshita0Akihisa Hikita1Ryota Myotsuzono2Satoki Murai3Department of Human Information Engineering Okayama Prefectural University Soja JapanDepartment of Sport Science Kyushu Kyoritsu University Kitakyushu JapanDepartment of Sport Science Kyushu Kyoritsu University Kitakyushu JapanDepartment of Human Information Engineering Okayama Prefectural University Soja JapanAbstract Phase angle (PhA), measured using bioelectrical impedance analysis, has recently gained attention as an indicator of muscle quality. This study investigates the relationship between PhA and body mass index (BMI) in nonathletic students and trained/developmental athletes. Seventy‐one male and 83 female students participated in the Normal group, while 159 male and 95 female students participated in the Sports group. Each group was further divided into two subgroups: those with a BMI higher (L‐Normal and L‐Sports) and lower (S‐Normal and S‐Sports) than the median BMI. Although fat‐free mass (FFM) did not differ significantly between the S‐Sports and L‐Normal groups, PhA was significantly higher in the S‐Sports group with a large effect size. While FFM was significantly higher in the L‐Sports group than in the S‐Sports group, PhA did not differ significantly with a small effect size. PhA and BMI showed no significant relationship in the Sports group, whereas a positive correlation was observed in the Normal group. These results suggest that PhA can be used to assess differences in competition and activity levels that are not represented by BMI or FFM. Furthermore, although PhA is related to BMI in the nonathletic populations, this relationship is not observed in trained/developmental‐level athletes.https://doi.org/10.14814/phy2.70412bioelectrical impedance analysisbody mass indexfat‐free masslean body massmuscle mass
spellingShingle Kazushige Oshita
Akihisa Hikita
Ryota Myotsuzono
Satoki Murai
Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes
Physiological Reports
bioelectrical impedance analysis
body mass index
fat‐free mass
lean body mass
muscle mass
title Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes
title_full Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes
title_fullStr Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes
title_full_unstemmed Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes
title_short Assessment of muscle quality by phase angle and body physique in nonathlete students and trained/developmental athletes
title_sort assessment of muscle quality by phase angle and body physique in nonathlete students and trained developmental athletes
topic bioelectrical impedance analysis
body mass index
fat‐free mass
lean body mass
muscle mass
url https://doi.org/10.14814/phy2.70412
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AT ryotamyotsuzono assessmentofmusclequalitybyphaseangleandbodyphysiqueinnonathletestudentsandtraineddevelopmentalathletes
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