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Role of Vitamins in Maintaining Bone Health

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Athletic performance and vitamin D.

John J Cannell1, Bruce W Hollis, Marc B Sorenson

  • 1Atascadero State Hospital, Atascadero, CA 93422, USA. jcannell@dmhash.state.ca.us

Medicine and Science in Sports and Exercise
|April 7, 2009
PubMed
Summary
This summary is machine-generated.

Vitamin D supplementation may enhance athletic performance, particularly in deficient athletes. Optimal levels, achieved through sun exposure, correlate with peak physical capabilities and offer health benefits.

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Area of Science:

  • Endocrinology
  • Sports Medicine
  • Human Physiology

Background:

  • Vitamin D (calcitriol) is a secosteroid hormone regulating over 1000 human genes.
  • Intracellular calcitriol levels increase with higher vitamin D intake, affecting nerve and muscle tissues.
  • Vitamin D's role in athletic performance is an area of growing research interest.

Purpose of the Study:

  • To investigate the evidence linking vitamin D status to physical and athletic performance.
  • To explore the physiological mechanisms through which vitamin D might influence athletic capabilities.

Main Methods:

  • Comprehensive review of existing scientific literature.
  • Analysis of studies examining the relationship between vitamin D levels and athletic outcomes.
  • Examination of research on vitamin D's effects on muscle fiber characteristics.

Main Results:

  • Studies indicate that vitamin D-enhancing ultraviolet light improves athletic performance.
  • Athletic performance exhibits seasonality, peaking with higher 25-hydroxy-vitamin D [25(OH)D] levels.
  • Vitamin D influences muscle physiology, increasing Type II fiber size and number, and is associated with better musculoskeletal performance.

Conclusions:

  • Vitamin D may enhance athletic performance in deficient individuals.
  • Peak performance may align with 25(OH)D levels of at least 50 ng/mL, similar to summer sun exposure.
  • Achieving optimal 25(OH)D levels may also confer protection against various health conditions.