冬季维生素D补充剂对大学生的体力表现的影响:为期一个月的随机对照试验
Xiao-Li Zhang1, Qing Zhang2, Xu Zhang1
1Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, Suzhou, China.
Journal of the International Society of Sports Nutrition
|September 22, 2023
概括
中国大学生的维生素D3补充改善了25-氧维生素D水平和副甲状腺激素,但没有提高身体表现. 然而,25-基维生素D和其他因素一起,可以预测最大的氧气吸收.
科学领域:
- 营养科学 营养科学
- 运动生理学 运动生理学
- 内分泌学 在内分泌学.
背景情况:
- 流行病学研究表明,25-氧维生素D [25(OH) D]与肌肉骨健康之间存在联系.
- 除了骨健康之外,维生素D补充的具体益处仍然不清楚.
研究的目的:
- 调查维生素D3补充剂对中国大学生冬季体力表现的影响.
- 评估肌肉骨功能,肺功能,骨周转标志物和其他健康指标的变化.
主要方法:
- 有117名25OH) D水平较低的学生被随机分配给一个月的每天1000 IU维生素D3或安慰剂.
- 测量包括血清25(OH) D,甲状腺激素,骨周转标记,肺功能 (FVC,FEV1),肌肉力量 (RHS),垂直跳高度 (VJH),有氧能力 (VO2max) 和疲劳指标.
主要成果:
- 维生素D3补充剂显著增加了血清25(OH) D水平,并降低了副甲状腺激素.
- 没有观察到身体表现,脂质概况或骨周转标志物的显著改善.
- 血清25(OH) D与VJH正相关,与PTH和TC负相关.
- 25 (((OH) D,运动状态,性别,身高,体重,Hb和FVC预测了84.0%的VO2max变异.
结论:
- 一个月的维生素D3补充剂有效地改善了维生素D状态,并在冬季的学生中减少了PTH.
- 干预措施不足以提高身体表现.
- 血清25(OH) D水平,结合血红蛋白和强迫生命能力等因素,可以预测最大的氧气吸收.
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