Training environment and Vitamin D status in athletes

Area of Science:

• Sports Medicine
• Nutritional Biochemistry
• Exercise Physiology

Background:

• Vitamin D status is critical for athletes' health and performance.
• Elite athletes may have unique risk factors for Vitamin D deficiency.
• Training environment can influence Vitamin D levels due to sun exposure variations.

Purpose of the Study:

• To investigate the relationship between training environment and Vitamin D status in elite athletes.
• To explore associations between Vitamin D levels, anthropometry, gender, and sun protection practices.
• To examine the link between Vitamin D status and recent injury or health status.

Main Methods:

• Assessed 72 elite athletes, categorizing them by indoor, outdoor, or mixed training environments.
• Measured 25-hydroxyvitamin D (25(OH)D) levels via blood samples.
• Collected data on anthropometry, gender, training history, injury status, and sun protection habits.

Main Results:

• Average 25(OH)D levels were 111 ± 37 nmol/L.
• Indoor athletes (90 ± 28 nmol/L) had significantly lower 25(OH)D than outdoor (131 ± 35 nmol/L) and mixed (133 ± 29 nmol/L) groups (p=0.0001).
• Anthropometry correlated positively with 25(OH)D; injury and sun protection showed no association.

Conclusions:

• Predominant training environment significantly impacts Vitamin D status in elite athletes.
• Indoor athletes are at higher risk for lower Vitamin D levels.
• Coaches should consider monitoring Vitamin D in indoor athletes to prevent deficiency.