Skeletal muscle fiber composition may modify the effect of nutrition on body composition in young females

The aim of this study was to investigate the hypothesis that healthy, normal-weight females with greater proportions and sizes of the oxidative muscle fibers would also be characterized by a healthier body composition compared with individuals with increased glycolytic fibers, even if both follow si...

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Veröffentlicht in:Nutrition, metabolism, and cardiovascular diseases metabolism, and cardiovascular diseases, 2023-04, Vol.33 (4), p.817-825
Hauptverfasser: Methenitis, Spyridon, Nomikos, Tzortzis, Kontou, Eleni, Kiourelli, Kleio-Maria, Papadimas, George, Papadopoulos, Constantinos, Terzis, Gerasimos
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Sprache:eng
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Zusammenfassung:The aim of this study was to investigate the hypothesis that healthy, normal-weight females with greater proportions and sizes of the oxidative muscle fibers would also be characterized by a healthier body composition compared with individuals with increased glycolytic fibers, even if both follow similar nutritional plans. Vastus lateralis muscle fiber-type composition, body composition through dual-energy X-ray absorptiometry, and dietary intakes through questionnaire were evaluated in twenty-two young, healthy, non-obese females (age: 21.3±1.8yrs, body mass: 67.5±6.2 kg, body height: 1.66±0.05m, body mass index (BMI): 24.2±2.6  kg m−2). The participants were allocated into two groups according to their type I muscle fibers percentage [high (HI) and low (LI)]. The participants of the LI group were characterized by significantly higher body mass, fat mass, BMI, and cross-sectional and percentage cross-sectional area (%CSA) of type IIx muscle fibers compared with participants of the HI group (p 
ISSN:0939-4753
1590-3729
DOI:10.1016/j.numecd.2022.12.027