Compromised Vitamin D status negatively affects muscular strength and power of collegiate athletes

Rachel A. Hildebrand, Bridget Miller, Aric Warren, Deana Hildebrand, Brenda J. Smith

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Increasing evidence indicates that compromised vitamin D status, as indicated by serum 25-hydroxyvitamin D (25-OH D), is associated with decreased muscle function. The purpose of this study was to determine the vitamin D status of collegiate athletes residing in the southern U.S. and its effects on muscular strength and anaerobic power. Collegiate athletes (n = 103) from three separate NCAA athletic programs were recruited for the study. Anthropometrics, vitamin D and calcium intake, and sun exposure data were collected along with serum 25-OH D and physical performance measures (Vertical Jump Test, Shuttle Run Test, Triple Hop for Distance Test and the 1 Repetition Maximum Squat Test) to determine the influence of vitamin D status on muscular strength and anaerobic power. Approximately 68% of the study participants were vitamin D adequate (>75 nmol/L), whereas 23% were insufficient (75-50 nmol/L) and 9%, predominantly non-Caucasian athletes, were deficient (<50 nmol/L). Athletes who had lower vitamin D status had reduced performance scores (p < .01) with odds ratios of 0.85 on the Vertical Jump Test, 0.82 on the Shuttle Run Test, 0.28 on the Triple Hop for Distance Test, and 0.23 on the 1 RM Squat Test. These findings demonstrate that even NCAA athletes living in the southern US are at risk for vitamin D insufficiency and deficiency and that maintaining adequate vitamin D status may be important for these athletes to optimize their muscular strength and power.

Original languageEnglish
Pages (from-to)558-564
Number of pages7
JournalInternational Journal of Sport Nutrition and Exercise Metabolism
Volume26
Issue number6
DOIs
StatePublished - 1 Dec 2016

Fingerprint

Vitamin D
Athletes
Humulus
Vitamin D Deficiency
Solar System
Serum
Sports
Odds Ratio
Calcium
Muscles

Keywords

  • 25-OH D status
  • Athletic performance
  • Muscle strength and power

Cite this

Hildebrand, Rachel A. ; Miller, Bridget ; Warren, Aric ; Hildebrand, Deana ; Smith, Brenda J. / Compromised Vitamin D status negatively affects muscular strength and power of collegiate athletes. In: International Journal of Sport Nutrition and Exercise Metabolism. 2016 ; Vol. 26, No. 6. pp. 558-564.
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Compromised Vitamin D status negatively affects muscular strength and power of collegiate athletes. / Hildebrand, Rachel A.; Miller, Bridget; Warren, Aric; Hildebrand, Deana; Smith, Brenda J.

In: International Journal of Sport Nutrition and Exercise Metabolism, Vol. 26, No. 6, 01.12.2016, p. 558-564.

Research output: Contribution to journalArticle

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