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- Title
Association of Vitamin D Supplementation in Cardiorespiratory Fitness and Muscle Strength in Adult Twins: A Randomized Controlled Trial.
- Authors
Medeiros, Jeane Franco Pires; de Oliveira Borges, Michelle Vasconcelos; Soares, Aline Alves; de Sousa, Elys Costa; Costa, José Ronaldo Ribeiro da; Silva, Weberthon Alessanderson Costa; de Sousa, Magnus Vinicius Bezerra; Silbiger, Vivian Nogueira; Dantas, Paulo Moreira Silva; Luchessil, Andrd Ducati
- Abstract
Although vitamin D is related to cardiorespiratory fitness and muscle strength, there is no evidence in the literature about the genetic infiuence of the response to vitamin D supplementation and improvements in these parameters. Therefore, we evaluate the effect of longitudinal supplementation of vitamin D on parameters of physical fitness in monozygotic twins. In total, 74 participants were included, with a mean age of 25 years, divided into two groups, one group received supplementation with cholecalciferol for 60 days and the other group did not. Cardiorespiratory fitness and muscle strength were measured before and after supplementation through maximal treadmill tests and dynamometry, respectively. Wilcoxon tests were used to compare intragroup results and the Mann-Whitney test to examine intergroup differences. There was an increase in the serum concentration of vitamin D in participants who ingested the supplementation. Cardiorespiratory fitness improved after supplementation through increases in the values of maximum oxygen consumption of 28% (p < .001). Muscle strength in left hand grip increased 18% in participants who received the supplement (p = .007). Sixty days of cholecalciferol supplementation improved cardiorespiratory fitness and upper limb muscle strength.
- Subjects
RESEARCH; EXERCISE tests; MUSCLE contraction; CARDIOPULMONARY fitness; CARDIOPULMONARY system; OXYGEN consumption; TWINS; PHYSICAL fitness; CHOLECALCIFEROL; MANN Whitney U Test; VITAMIN D; DIETARY supplements; RANDOMIZED controlled trials; MATHEMATICAL variables; TREATMENT effectiveness; MUSCLE strength; STATISTICAL sampling; ADULTS
- Publication
International Journal of Sport Nutrition & Exercise Metabolism, 2022, Vol 32, Issue 1, p2
- ISSN
1526-484X
- Publication type
Article
- DOI
10.1123/ijsnem.2021-0060