Correcting vitamin D insufficiency improves some but not all aspects of physical performance during winter training in taekwondo athletes - Jung, H. C.; Seo, M. W.; Lee, S.; Jung, S. W.; Song, J. K. (International Journal of Sport Nutrition and Exercise Metabolism, 2018)
Keywords: combat sport; taekwondo; training; winter; health; vitamin; nutrition; supplementation; relation; performance; USA; biological and medical sciences; combat sports