Todd Joshua, Madigan Sharon, Pourshahidi Kirsty, McSorley Emeir, Laird Eamon, Healy Martin, Magee Pamela
Northern Ireland Centre for Food and Health, University of Ulster, Coleraine, Londonderry BT52 1SA, Northern Ireland, UK.
Irish Institute of Sport, Sports Campus Ireland, Abbotstown, Dublin 15, Republic of Ireland.
Nutrients. 2016 Aug 9;8(8):485. doi: 10.3390/nu8080485.
Vitamin D deficiency is a global health concern that is prevalent in Ireland. The vitamin D status of elite Irish athletes following implementation of a revised supplementation policy in 2010/2011 has not been explored to date. This study aimed to assess the vitamin D status of elite Irish athletes participating in high-profile sports and establish if equatorial travel, supplementation and/or sunbed use predict vitamin D status. Across Ireland, blood samples (n = 92) were obtained from cricketers (n = 28), boxers (n = 21) and women's rugby sevens players (n = 43) between November 2013 and April 2015. Total 25-hydroxyvitamin D (25(OH)D) concentrations were quantified using LC-MS/MS. Parathyroid hormone and adjusted calcium concentrations were measured by clinical biochemistry. Athletes completed a questionnaire that queried equatorial travel, supplementation and sunbed use. Vitamin D sufficiency (25(OH)D >50 nmol/L) was evident in 86% of athletes. Insufficiency (31-49 nmol/L) and deficiency (<30 nmol/L) was present in only 12% and 2% of athletes respectively. On average, athletes from all sport disciplines were vitamin D sufficient and 25% reported vitamin D supplementation which was a significant positive predictor of vitamin D status, (OR 4.31; 95% CI 1.18-15.75; p = 0.027). Equatorial travel and sun bed use were reported in 47% and 16% of athletes respectively however these factors did not predict vitamin D status (both p > 0.05). Although different cohorts were assessed, the overall prevalence of vitamin D insufficiency/deficiency was 55% in 2010/2011 compared with only 14% in 2013/2015. Targeted supplementation is highly effective in optimising vitamin D status, negating the need for blanket-supplementation in elite cohorts.
维生素D缺乏是一个全球性的健康问题，在爱尔兰很普遍。2010/2011年实施修订后的补充政策后，爱尔兰精英运动员的维生素D状况至今尚未得到研究。本研究旨在评估参加知名运动项目的爱尔兰精英运动员的维生素D状况，并确定赤道旅行、补充剂使用和/或日光浴床使用是否能预测维生素D状况。2013年11月至2015年4月期间，在爱尔兰各地采集了板球运动员（n = 28）、拳击运动员（n = 21）和女子七人制橄榄球运动员（n = 43）的血样（n = 92）。使用液相色谱-串联质谱法对总25-羟基维生素D（25(OH)D）浓度进行定量。甲状旁腺激素和校正后的钙浓度通过临床生化测定。运动员完成了一份询问赤道旅行、补充剂使用和日光浴床使用情况的问卷。86%的运动员维生素D充足（25(OH)D >50 nmol/L）。维生素D不足（31 - 49 nmol/L）和缺乏（<30 nmol/L）的运动员分别仅占12%和2%。平均而言，所有运动项目的运动员维生素D都充足，25%的运动员报告使用了维生素D补充剂，这是维生素D状况的一个显著正预测因子（比值比4.31；95%置信区间1.18 - 15.75；p = 0.027）。分别有47%和16%的运动员报告有赤道旅行和使用日光浴床的情况，但这些因素并不能预测维生素D状况（p均>0.05）。尽管评估了不同的队列，但2010/2011年维生素D不足/缺乏的总体患病率为55%，而2013/2015年仅为14%。针对性补充剂在优化维生素D状况方面非常有效，无需对精英群体进行全面补充。
