维生素D补充剂对精英男性大学生运动员体脂量的影响。

The impact of vitamin D supplementation on body fat mass in elite male collegiate athletes.

作者信息

Kawashima Itaru, Tsukahara Takashi, Kawai Ryosuke, Mizuno Takafumi, Ishizuka Shinya, Hiraiwa Hideki, Imagama Shiro

机构信息

Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya, Aichi, 466-8550, Japan.

Department of Orthopaedic Surgery, Asahi University Hospital, 3-23 Hashimotocho, Gifu, Gifu, 500-8523, Japan.

出版信息

Nutr Metab (Lond). 2021 May 21;18(1):51. doi: 10.1186/s12986-021-00578-9.

DOI:10.1186/s12986-021-00578-9

PMID:34020679

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8138511/

Abstract

BACKGROUND

Whether vitamin D supplementation has any effect on body fat percentage, especially among elite athletes, remains unclear. The aim of this study was to evaluate the effect of vitamin D supplementation on serum vitamin D level in elite male collegiate athletes and to analyze its effect on body fat percentage.

METHODS

We enrolled a total of 42 elite male collegiate athletes in this prospective cohort study. In March 2020, body composition monitoring and blood test were performed. All athletes were provided with vitamin D3 supplement tablets of 25 μg/day. The use of the supplement was dependent on athletes' preference. During the study period, their club activities were stopped for 2 months due to the coronavirus disease 2019 outbreak. A second examination, similar to the first one, was performed after approximately 3 months. Supplement usage by each athlete was also confirmed. The participants were divided into a non-supplement group (without supplementation, n = 15) and a supplement group (with supplementation, n = 27).

RESULTS

Regarding baseline data at initial examination, the non-supplement and supplement groups showed significant differences in the mean body fat percentage (9.0% and 12.1%, respectively; P = 0.03) and serum 25(OH)D level (22.7 and 18.5 ng/mL, respectively, P = 0.02). At the time of the second examination, there were no significant differences in the results of both the groups. In terms of mean change value from the first to the second examination, there were significant differences in body fat percentage (1.9 and 0.2%, respectively, P = 0.02) and serum 25(OH)D level (1.7 and 7.2 ng/mL, respectively, P < 0.001) between the two groups. A significant negative correlation was observed between the change ratio of body fat percentage and change value of serum 25(OH)D level (r = - 0.37, P = 0.02).

CONCLUSIONS

Vitamin D supplementation of 25 μg/day significantly increased the serum 25(OH)D level in elite male collegiate athletes. Vitamin D supplementation may play a role in maintaining athletes' body fat percentage under circumstances where sports activity has decreased.

摘要

背景

维生素D补充剂对体脂百分比是否有影响，尤其是在精英运动员中，目前尚不清楚。本研究的目的是评估维生素D补充剂对精英男性大学生运动员血清维生素D水平的影响，并分析其对体脂百分比的作用。

方法

在这项前瞻性队列研究中，我们共招募了42名精英男性大学生运动员。2020年3月，进行了身体成分监测和血液检测。所有运动员均被提供每日25μg的维生素D3补充片剂。补充剂的使用取决于运动员的偏好。在研究期间，由于2019年冠状病毒病爆发，他们的俱乐部活动停止了2个月。大约3个月后进行了与第一次类似的第二次检查。还确认了每位运动员的补充剂使用情况。参与者被分为非补充组（未补充，n = 15）和补充组（补充，n = 27）。

结果

关于初次检查时的基线数据，非补充组和补充组在平均体脂百分比（分别为9.0%和12.1%；P = 0.03）和血清25(OH)D水平（分别为22.7和18.5 ng/mL，P = 0.02）方面存在显著差异。在第二次检查时，两组结果无显著差异。从第一次检查到第二次检查的平均变化值来看，两组在体脂百分比（分别为1.9%和0.2%，P = 0.02）和血清25(OH)D水平（分别为1.7和7.2 ng/mL，P < 0.001）方面存在显著差异。体脂百分比变化率与血清25(OH)D水平变化值之间存在显著负相关（r = -0.37，P = 0.02）。