Evaluating the Role of Vitamin D Supplementation in Enhancing Muscle Strength Among Athletes
DOI:
https://doi.org/10.71341/bmwj.v2i1.28Keywords:
Vitamin D, Muscle strength, Athletes, SupplementationAbstract
Background: Vitamin D is essential for musculoskeletal health, and a deficiency can affect muscle performance. Athletes, especially those training indoors or in areas with limited sunlight, may lack sufficient vitamin D.
Aim: This review examines how vitamin D supplements affect muscle strength in athletes across different sports.
Methods: A comprehensive literature search was conducted across PubMed, Scopus, and Science Direct for randomized controlled trials (RCTs) published between 2014-2024. Studies examining vitamin D supplementation in athletes and its impact on muscle strength outcomes were included. Data on dosage, duration, baseline vitamin D levels, and muscle strength assessments were extracted and analyzed.
Results: Four RCTs were identified, with supplementation doses from 600 IU to 5000 IU daily. The results indicate that vitamin D supplements significantly improve lower limb strength, power, and recovery in athletes with initial vitamin D insufficiency (levels below 30 ng/mL). For athletes with sufficient vitamin D levels, supplements had little to no impact. Factors such as the length of the intervention and initial vitamin D levels were important in determining the outcomes.
Conclusion: Vitamin D supplements can benefit athletes with a deficiency, enhancing muscle strength. However, they show limited effects on those with adequate vitamin D. Future research should focus on determining the ideal dosing and examining the long-term impact of supplements on athletic performance.
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