Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study
Vitamin D deficiency has been commonly reported in elite athletes, but the vitamin D status of UK university athletes in different training environments remains unknown. The present study aimed to determine any seasonal changes in vitamin D status among indoor and outdoor athletes, and whether there...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2020-01-01
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| Series: | Journal of Nutritional Science |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S2048679020000014/type/journal_article |
| _version_ | 1811155842913796096 |
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| author | Saskia L. Wilson-Barnes Julie E. A. Hunt Emma L. Williams Sarah J. Allison James J. Wild Joe Wainwright Susan A. Lanham-New Ralph J. F. Manders |
| author_facet | Saskia L. Wilson-Barnes Julie E. A. Hunt Emma L. Williams Sarah J. Allison James J. Wild Joe Wainwright Susan A. Lanham-New Ralph J. F. Manders |
| author_sort | Saskia L. Wilson-Barnes |
| collection | DOAJ |
| description | Vitamin D deficiency has been commonly reported in elite athletes, but the vitamin D status of UK university athletes in different training environments remains unknown. The present study aimed to determine any seasonal changes in vitamin D status among indoor and outdoor athletes, and whether there was any relationship between vitamin D status and indices of physical performance and bone health. A group of forty-seven university athletes (indoor n 22, outdoor n 25) were tested during autumn and spring for serum vitamin D status, bone health and physical performance parameters. Blood samples were analysed for serum 25-hydroxyvitamin D (s-25(OH)D) status. Peak isometric knee extensor torque using an isokinetic dynamometer and jump height was assessed using an Optojump. Aerobic capacity was estimated using the Yo-Yo intermittent recovery test. Peripheral quantitative computed tomography scans measured radial bone mineral density. Statistical analyses were performed using appropriate parametric/non-parametric testing depending on the normality of the data. s-25(OH)D significantly fell between autumn (52·8 (sd 22·0) nmol/l) and spring (31·0 (sd 16·5) nmol/l; P < 0·001). In spring, 34 % of participants were considered to be vitamin D deficient (<25 nmol/l) according to the revised 2016 UK guidelines. These data suggest that UK university athletes are at risk of vitamin D deficiency. Thus, further research is warranted to investigate the concomitant effects of low vitamin D status on health and performance outcomes in university athletes residing at northern latitudes. |
| first_indexed | 2024-04-10T04:41:27Z |
| format | Article |
| id | doaj.art-1bbc6167105249118e7143c1b5b533f1 |
| institution | Directory Open Access Journal |
| issn | 2048-6790 |
| language | English |
| last_indexed | 2024-04-10T04:41:27Z |
| publishDate | 2020-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Nutritional Science |
| spelling | doaj.art-1bbc6167105249118e7143c1b5b533f12023-03-09T12:39:11ZengCambridge University PressJournal of Nutritional Science2048-67902020-01-01910.1017/jns.2020.1Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal studySaskia L. Wilson-Barnes0https://orcid.org/0000-0001-9945-4800Julie E. A. Hunt1Emma L. Williams2Sarah J. Allison3James J. Wild4Joe Wainwright5Susan A. Lanham-New6Ralph J. F. Manders7Department of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UKDepartment of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UKDivision of Women's, Children's and Clinical Support, Imperial College Healthcare NHS Trust, London W12 0NN, UKDepartment of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UKDepartment of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UKDepartment of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UKDepartment of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UKDepartment of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UKVitamin D deficiency has been commonly reported in elite athletes, but the vitamin D status of UK university athletes in different training environments remains unknown. The present study aimed to determine any seasonal changes in vitamin D status among indoor and outdoor athletes, and whether there was any relationship between vitamin D status and indices of physical performance and bone health. A group of forty-seven university athletes (indoor n 22, outdoor n 25) were tested during autumn and spring for serum vitamin D status, bone health and physical performance parameters. Blood samples were analysed for serum 25-hydroxyvitamin D (s-25(OH)D) status. Peak isometric knee extensor torque using an isokinetic dynamometer and jump height was assessed using an Optojump. Aerobic capacity was estimated using the Yo-Yo intermittent recovery test. Peripheral quantitative computed tomography scans measured radial bone mineral density. Statistical analyses were performed using appropriate parametric/non-parametric testing depending on the normality of the data. s-25(OH)D significantly fell between autumn (52·8 (sd 22·0) nmol/l) and spring (31·0 (sd 16·5) nmol/l; P < 0·001). In spring, 34 % of participants were considered to be vitamin D deficient (<25 nmol/l) according to the revised 2016 UK guidelines. These data suggest that UK university athletes are at risk of vitamin D deficiency. Thus, further research is warranted to investigate the concomitant effects of low vitamin D status on health and performance outcomes in university athletes residing at northern latitudes.https://www.cambridge.org/core/product/identifier/S2048679020000014/type/journal_articleVitamin DUniversity athletesBoneMuscle strengthAthletic performancePhysiology |
| spellingShingle | Saskia L. Wilson-Barnes Julie E. A. Hunt Emma L. Williams Sarah J. Allison James J. Wild Joe Wainwright Susan A. Lanham-New Ralph J. F. Manders Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study Journal of Nutritional Science Vitamin D University athletes Bone Muscle strength Athletic performance Physiology |
| title | Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study |
| title_full | Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study |
| title_fullStr | Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study |
| title_full_unstemmed | Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study |
| title_short | Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study |
| title_sort | seasonal variation in vitamin d status bone health and athletic performance in competitive university student athletes a longitudinal study |
| topic | Vitamin D University athletes Bone Muscle strength Athletic performance Physiology |
| url | https://www.cambridge.org/core/product/identifier/S2048679020000014/type/journal_article |
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