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Nutrients 2018, 10(7), 942; https://doi.org/10.3390/nu10070942

Serum 25-Hydroxyvitamin D Concentrations Are Inversely Correlated with Hepatic Lipid Content in Male Collegiate Football Athletes

1
School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
2
Global Health Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
3
Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
4
School of Kinesiology, Shanghai University of Sport, 399 Chang Hai Road, Shanghai 200438, China
5
Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo 162-8636, Japan
*
Author to whom correspondence should be addressed.
Received: 1 June 2018 / Revised: 19 July 2018 / Accepted: 20 July 2018 / Published: 21 July 2018
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Abstract

Lower serum 25-hydroxyvitamin D (25(OH)D) concentrations are associated with more weight and fat mass gain in adults in the general population, but it is unknown whether this is the case in collegiate football athletes with greater body weight. This study aimed to investigate associations of serum 25(OH)D concentrations with body fat and ectopic fat accumulation, and to determine which fat indicators are closely related to serum 25(OH)D in male collegiate football athletes. Thirty-four collegiate athletes aged 21 years were recruited. Serum 25(OH)D concentrations and the levels of visceral fat area (VFA), vastus lateralis intramyocellular lipid (IMCL), extramyocellular lipid (EMCL), and intrahepatic lipid (IHCL) were measured. Serum 25(OH)D concentrations were negatively associated with the IHCL values (r = −0.372, p = 0.030), and the relationship remained after adjustment for several factors (r = −0.378, p = 0.047). Additionally, multiple stepwise regression analysis of IHCL content as the dependent variable indicated that 25(OH)D concentrations were a stronger predictor of IHCL content (β = −0.363, p = 0.030) than % body fat and VO2peakFFM. Higher serum 25(OH)D concentrations are more closely related to lower IHCL content rather than any other fat indicators, suggesting that increasing serum 25(OH)D concentrations may have some effect that inhibits lipid accumulation in hepatic tissue, especially in heavy athletes. View Full-Text
Keywords: abdominal body fat; American football; ectopic fat; rugby football; vitamin D abdominal body fat; American football; ectopic fat; rugby football; vitamin D
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Sun, X.; Cao, Z.-B.; Tanisawa, K.; Oshima, S.; Higuchi, M. Serum 25-Hydroxyvitamin D Concentrations Are Inversely Correlated with Hepatic Lipid Content in Male Collegiate Football Athletes. Nutrients 2018, 10, 942.

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