An Observation of the Vitamin D Status in Highly Trained Adolescent Swimmers during the UK Autumn and Winter Months

J. W. Newbury, Meghan A. Brown, Matthew Cole, A. Kelly, Lewis A. Gough
{"title":"An Observation of the Vitamin D Status in Highly Trained Adolescent Swimmers during the UK Autumn and Winter Months","authors":"J. W. Newbury, Meghan A. Brown, Matthew Cole, A. Kelly, Lewis A. Gough","doi":"10.3390/physiologia3030031","DOIUrl":null,"url":null,"abstract":"The purpose of this research was two-fold: (a) to observe whether highly trained adolescent swimmers abide to vitamin D supplement recommendations; and (b) to monitor changes in circulating 25-hydroxyvitamin D (25(OH)D) that occur between the autumn and winter months. Twenty swimmers (age: 17 ± 2 years) from a UK high-performance swimming club volunteered to complete two blood spot cards to determine their 25(OH)D concentration: the first in an autumn training phase (October) and the second during winter training (January). All swimmers were advised to consume vitamin D3 supplements across the assessment period; however, only 50% of swimmers adhered to this recommendation. Resultantly, a winter decline in 25(OH)D was observed in non-supplementing swimmers (79.6 ± 25.2 to 52.6 ± 15.1 nmol·L−1, p = 0.005), with swimmers either displaying an ‘insufficient’ (60%) or ‘deficient’ (40%) vitamin D status. In comparison, a greater maintenance of 25(OH)D occurred in supplementing swimmers (92.0 ± 25.5 to 97.2 ± 38.3 nmol·L−1, p = 0.544), although variable outcomes occurred at the individual level (four increased, three maintained, three declined). These findings highlight the possible risks of vitamin D insufficiency during the winter for swimmers in the UK, possibly requiring standardised supplement practices. Moreover, alternative educational strategies may be required for swimmers to transfer knowledge to practice in order to improve supplement adherence in future.","PeriodicalId":93484,"journal":{"name":"Physiologia","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physiologia","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/physiologia3030031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

The purpose of this research was two-fold: (a) to observe whether highly trained adolescent swimmers abide to vitamin D supplement recommendations; and (b) to monitor changes in circulating 25-hydroxyvitamin D (25(OH)D) that occur between the autumn and winter months. Twenty swimmers (age: 17 ± 2 years) from a UK high-performance swimming club volunteered to complete two blood spot cards to determine their 25(OH)D concentration: the first in an autumn training phase (October) and the second during winter training (January). All swimmers were advised to consume vitamin D3 supplements across the assessment period; however, only 50% of swimmers adhered to this recommendation. Resultantly, a winter decline in 25(OH)D was observed in non-supplementing swimmers (79.6 ± 25.2 to 52.6 ± 15.1 nmol·L−1, p = 0.005), with swimmers either displaying an ‘insufficient’ (60%) or ‘deficient’ (40%) vitamin D status. In comparison, a greater maintenance of 25(OH)D occurred in supplementing swimmers (92.0 ± 25.5 to 97.2 ± 38.3 nmol·L−1, p = 0.544), although variable outcomes occurred at the individual level (four increased, three maintained, three declined). These findings highlight the possible risks of vitamin D insufficiency during the winter for swimmers in the UK, possibly requiring standardised supplement practices. Moreover, alternative educational strategies may be required for swimmers to transfer knowledge to practice in order to improve supplement adherence in future.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
在英国秋冬两个月对高训练青少年游泳者维生素D水平的观察
这项研究的目的有两个:(a)观察训练有素的青少年游泳运动员是否遵守维生素D补充剂的建议;和(b)监测在秋季和冬季之间发生的循环25-羟基维生素D(25(OH)D)的变化。来自英国一家高性能游泳俱乐部的20名游泳运动员(年龄:17±2岁)自愿填写了两张血点卡,以确定他们的25(OH)D浓度:第一张在秋季训练阶段(10月),第二张在冬季训练阶段(1月)。建议所有游泳运动员在整个评估期内服用维生素D3补充剂;然而,只有50%的游泳运动员坚持这一建议。因此,在不补充维生素D的游泳运动员中,观察到冬季25(OH)D下降(79.6±25.2至52.6±15.1 nmol·L−1,p=0.005),游泳运动员要么表现出“维生素D不足”(60%),要么表现出维生素D“缺乏”(40%)。相比之下,补充游泳运动员的25(OH)D维持率更高(92.0±25.5至97.2±38.3 nmol·L−1,p=0.544),尽管在个体水平上出现了不同的结果(4个增加,3个维持,3个下降)。这些发现突显了英国游泳运动员在冬季维生素D缺乏的可能风险,可能需要标准化的补充做法。此外,游泳运动员可能需要其他教育策略,将知识转化为实践,以提高未来的补充依从性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Body Condition in Small Ruminants—Effects of Nutrition on the Hypothalamic–Pituitary–Gonad Axis and Ovarian Activity That Controls Reproduction Understanding and Modeling the Pathophysiology of Hydrocephalus: In Search of Better Treatment Options Identification of Putative Causal Relationships between Blood-Based Biomarkers and Prediabetes-Induced Senescence: A Comprehensive Review Decrease in Leptin Expression in the Liver after Prolonged Every-Other-Day Feeding in C57Bl/6 Male Mice Time-Course of Recovery for Biomarkers and Physical Performance after Strenuous Military Training: A Systematic Review
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1