Circulating total 25(OH)D and calculated free 25(OH)D in professional academy footballers at a northerly latitude in the UK
There is limited data on the vitamin D status of UK-based professional academy footballers. Therefore, the objective of this study was to report total 25(OH)D, free 25(OH)D and free 1,25(OH) 2 D at the end of the winter (March) and summer periods (October) in a cohort ( n = 27) of professional acad...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Termedia Publishing House
2023-11-01
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| Series: | Biology of Sport |
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| Online Access: | https://www.termedia.pl/Circulating-total-25-OH-D-and-calculated-free-25-OH-D-in-r-nprofessional-academy-footballers-at-a-northerly-latitude-in-the-UK,78,51586,1,1.html |
| _version_ | 1797214564294590464 |
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| author | Simon D. Bowles Subhashis Basu Mayur K. Ranchordas Trevor Simper Anthony Lynn |
| author_facet | Simon D. Bowles Subhashis Basu Mayur K. Ranchordas Trevor Simper Anthony Lynn |
| author_sort | Simon D. Bowles |
| collection | DOAJ |
| description | There is limited data on the vitamin D status of UK-based professional academy footballers. Therefore, the objective of this study was to report total 25(OH)D, free 25(OH)D and free 1,25(OH) 2 D at the end of the winter (March) and summer periods (October) in a cohort ( n = 27) of professional academy footballers in northern England. Blood samples were collected to measure total 25(OH)D, parathyroid hormone, vitamin D binding protein, albumin and calcium. Free 25(OH)D and 1, 25(OH) 2 D were calculated. Dietary vitamin D intake and retrospective summer sunlight exposure were also collected. At the end of winter, 2/27 (7.4%) players were vitamin D deficient (25(OH)D 30 nmol/l < 50 nmol/l). By the end of summer, none were deficient but 3/14 (21.4%) were still insufficient. Median total 25(OH)D(82.2 nmol/l [IQR: 50.3–90.2] vs. 54.2 nmol/l [IQR: 36.8–71.9]; P = .02), free 25(OH)D (25.8 pmol/l [IQR: 15.1–33.1] vs. 13.2 pmol/l [IQR: 9.0–14.9]; P = .005) and free 1, 25(OH)2D (389 fmol/l [IQR: 209–594] vs. 212 fmol/l [IQR: 108–278]; P = .034) were significantly higher at the end of summer than the end of winter. At the end of winter, free 25(OH)D was lower (P = .003) in those vitamin D insufficient (8.8 pmol/l [IQR: 5.5–11.8]) vs. sufficient (13.7 pmol/l [IQR: 12.0 17.0]). There was a high prevalence of vitamin D insufficiency at the end of the winter. Free 25(OH)D was also lower at the winter timepoint and in players that were insufficient vs. sufficient. |
| first_indexed | 2024-04-24T11:16:11Z |
| format | Article |
| id | doaj.art-823e5dde89714737ae5f32da5abcf7b4 |
| institution | Directory Open Access Journal |
| issn | 0860-021X 2083-1862 |
| language | English |
| last_indexed | 2024-04-24T11:16:11Z |
| publishDate | 2023-11-01 |
| publisher | Termedia Publishing House |
| record_format | Article |
| series | Biology of Sport |
| spelling | doaj.art-823e5dde89714737ae5f32da5abcf7b42024-04-11T08:12:28ZengTermedia Publishing HouseBiology of Sport0860-021X2083-18622023-11-0141220120810.5114/biolsport.2024.13182251586Circulating total 25(OH)D and calculated free 25(OH)D in professional academy footballers at a northerly latitude in the UKSimon D. BowlesSubhashis BasuMayur K. RanchordasTrevor SimperAnthony LynnThere is limited data on the vitamin D status of UK-based professional academy footballers. Therefore, the objective of this study was to report total 25(OH)D, free 25(OH)D and free 1,25(OH) 2 D at the end of the winter (March) and summer periods (October) in a cohort ( n = 27) of professional academy footballers in northern England. Blood samples were collected to measure total 25(OH)D, parathyroid hormone, vitamin D binding protein, albumin and calcium. Free 25(OH)D and 1, 25(OH) 2 D were calculated. Dietary vitamin D intake and retrospective summer sunlight exposure were also collected. At the end of winter, 2/27 (7.4%) players were vitamin D deficient (25(OH)D 30 nmol/l < 50 nmol/l). By the end of summer, none were deficient but 3/14 (21.4%) were still insufficient. Median total 25(OH)D(82.2 nmol/l [IQR: 50.3–90.2] vs. 54.2 nmol/l [IQR: 36.8–71.9]; P = .02), free 25(OH)D (25.8 pmol/l [IQR: 15.1–33.1] vs. 13.2 pmol/l [IQR: 9.0–14.9]; P = .005) and free 1, 25(OH)2D (389 fmol/l [IQR: 209–594] vs. 212 fmol/l [IQR: 108–278]; P = .034) were significantly higher at the end of summer than the end of winter. At the end of winter, free 25(OH)D was lower (P = .003) in those vitamin D insufficient (8.8 pmol/l [IQR: 5.5–11.8]) vs. sufficient (13.7 pmol/l [IQR: 12.0 17.0]). There was a high prevalence of vitamin D insufficiency at the end of the winter. Free 25(OH)D was also lower at the winter timepoint and in players that were insufficient vs. sufficient.https://www.termedia.pl/Circulating-total-25-OH-D-and-calculated-free-25-OH-D-in-r-nprofessional-academy-footballers-at-a-northerly-latitude-in-the-UK,78,51586,1,1.htmltotal 25(oh)d free 25(oh)d free 125(oh)2d footballers |
| spellingShingle | Simon D. Bowles Subhashis Basu Mayur K. Ranchordas Trevor Simper Anthony Lynn Circulating total 25(OH)D and calculated free 25(OH)D in professional academy footballers at a northerly latitude in the UK Biology of Sport total 25(oh)d free 25(oh)d free 1 25(oh)2d footballers |
| title | Circulating total 25(OH)D and calculated free 25(OH)D in
professional academy footballers at a northerly latitude in the UK |
| title_full | Circulating total 25(OH)D and calculated free 25(OH)D in
professional academy footballers at a northerly latitude in the UK |
| title_fullStr | Circulating total 25(OH)D and calculated free 25(OH)D in
professional academy footballers at a northerly latitude in the UK |
| title_full_unstemmed | Circulating total 25(OH)D and calculated free 25(OH)D in
professional academy footballers at a northerly latitude in the UK |
| title_short | Circulating total 25(OH)D and calculated free 25(OH)D in
professional academy footballers at a northerly latitude in the UK |
| title_sort | circulating total 25 oh d and calculated free 25 oh d in professional academy footballers at a northerly latitude in the uk |
| topic | total 25(oh)d free 25(oh)d free 1 25(oh)2d footballers |
| url | https://www.termedia.pl/Circulating-total-25-OH-D-and-calculated-free-25-OH-D-in-r-nprofessional-academy-footballers-at-a-northerly-latitude-in-the-UK,78,51586,1,1.html |
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