Vitamin D Status and V[Combining Dot Above]O2peak During a Skate Treadmill Graded Exercise Test in Competitive Ice Hockey Players

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Fitzgerald, JS, Peterson, BJ, Warpeha, JM, Wilson, PB, Rhodes, GS, and Ingraham, SJ. Vitamin D status and V[Combining Dot Above]O2peak during a skate treadmill graded exercise test in competitive ice hockey players. J Strength Cond Res 28(11): 3205–3210, 2014—Vitamin D status has been associated with cardiorespiratory fitness (CRF) in cross-sectional investigations in the general population. Data characterizing the association between 25-hydroxyvitamin D (25(OH)D) concentration and CRF in athletes are lacking. Junior and collegiate ice hockey players were recruited from the Minneapolis, MN (44.9° N), area during the off-season period (May 16–June 28). The purpose of this study was to examine the cross-sectional association between 25(OH)D concentration and CRF in a sample population of competitive ice hockey players. Circulating 25(OH)D level was assessed from a capillary blood sample analyzed using liquid chromatography-tandem mass spectrometry. V[Combining Dot Above]O2peak during a skate treadmill graded exercise test (GXT) was used to assess CRF. Data on both 25(OH)D concentration and V[Combining Dot Above]O2peak were available for 52 athletes. Insufficient 25(OH)D concentrations were found in 37.7% of the athletes (<32 ng·ml−1). Vitamin D status was not significantly associated with any physiological or physical parameter during the skate treadmill GXT.

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