Efficacy of Vitamin D Supplementation in Physical Performance of Iranian Elite Athletes

International Journal of Preventive Medicine
Karamollah AlimoradiTirang R Neyestani

Abstract

There has been no report of the vitamin D status of the professional athletes from Iran to date. This study was performed to evaluate the efficacy of weekly vitamin D supplementation on athletic performance in Iranian athletes expedited to Asian competition in Taipei, China, 2015. This study was a randomized controlled clinical trial. Seventy subjects were enrolled in the study. The athletes were randomly divided into two groups: vitamin D supplement (D; received 50,000 IU of vitamin D supplement weekly) and control (P, received a placebo weekly). Duration of the study was 8 weeks. Anthropometric, dietary, athletic performance, and biochemical evaluations were performed for all subjects in the beginning and in the end of the intervention period. A significant rise in circulating 25(OH)D concentration was observed in D group (17.3 ± 16.9 ng/mL, P < 0.001), whereas in P group, there was a statistically significant decrement (-3.1 ± 8.4 ng/mL, P = 0.040). There were no either within- or between-group significant differences in Ergo jump, vertical jump, and agility tests. In strength leg press tests, both groups showed a significant improvement. However, comparisons of changes revealed that the improvement in D group was significan...Continue Reading

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Citations

Mar 20, 2020·European Journal of Sport Science·Andrew MarleyJohn Babraj
Feb 28, 2020·Nutrients·Mirian de la Puente YagüeMarioa A Cuadrado Cenzual
Feb 9, 2021·Orthopaedic Journal of Sports Medicine·Alexander E WeberSeth C Gamradt
Mar 24, 2021·Medicine and Science in Sports and Exercise·Mai WagehGianni Parise
Oct 16, 2021·Journal of Occupational and Environmental Medicine·Samantha J BrooksAnnie J Roe

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