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Physical training over 6 months is associated with improved changes in phase angle, body composition, and blood glucose in healthy young males
Author(s) -
Langer Raquel D.,
Silva Analiza M.,
Borges Juliano H.,
Cirolini Vagner X.,
Páscoa Mauro A.,
GuerraJúnior Gil,
Gonçalves Ezequiel M.
Publication year - 2019
Publication title -
american journal of human biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.559
H-Index - 81
eISSN - 1520-6300
pISSN - 1042-0533
DOI - 10.1002/ajhb.23275
Subject(s) - bioelectrical impedance analysis , phase angle (astronomy) , medicine , endocrinology , lean body mass , composition (language) , reactance , fat mass , body mass index , zoology , physiology , biology , body weight , linguistics , philosophy , physics , quantum mechanics , astronomy , voltage
Abstract Objectives The aim of this study was to evaluate the association between phase angle, body composition, and blood glucose changes in healthy young males after 6 months of physical training. Methods Volunteers, 98 healthy males (18.8 ± 0.5 years), had 6 months of progressive physical training (5 days a week, 90 minutes a day). Resistance, reactance, and phase angle were obtained by bioelectrical impedance analysis, body composition (fat mass, bone mineral content [BMC], and lean soft tissue [LST]) by dual‐energy X‐ray absorptiometry, and blood glucose by reflectance photometry. Measurements were made at rest and in a fasted state, both before and after the training period. Results Phase angle, reactance, BMC, and LST significantly increased (0.6°, 3.8 Ω, 0.1 kg, and 1.9 kg, respectively; P < .01), whereas resistance and blood glucose decreased (−11.2 Ω and −4.1 mg/dL; P < .01). Changes in resistance and reactance explained those changes observed in LST ( R 2 = .26 and .16, respectively), but phase angle changes were not related to body composition and blood glucose alterations ( P < .05). Conclusions A 6‐month period of physical training was associated with positive changes in phase angle, body composition, and blood glucose in healthy young males, reinforcing the importance of maintaining a physically active lifestyle.