2.50
Hdl Handle:
http://hdl.handle.net/2436/607246
Title:
Vitamin D status in professional ballet dancers: winter vs. summer.
Authors:
Wolman, Roger; Wyon, Matthew ( 0000-0003-0942-2333 ) ; Koutedakis, Yiannis; Nevill, Alan M; Eastell, Richard; Allen, Nick
Abstract:
Objective: Serum 25-hydroxyvitamin D is produced by the exposure of the skin to sunlight. Therefore athletes who train indoors, such as dancers, are vulnerable to vitamin D deficiency. The purpose of the study was to evaluate the serum 25-hydroxyvitamin D status in UK professional dancers during periods of reduced and increased sunlight exposure (i.e., winter vs. summer), and to assess the impact on bone metabolism and risk of injury. Design: Cohort study. Methods: 19 elite classical ballet dancers (age 26±8.86 yr; height 1.66±8.84 m; mass 54.3±10.47 kg) were monitored over a 6 month period for 25-hydroxyvitamin D, PTH and blood serum bone turnover markers (CTX and PINP) along with injury data. Repeated measure ANOVA and Wilcoxon and Chi-square analyses were used and significance was set at p≤0.05. Results: Significant changes were noted between the winter andsummertest dates for 25-hydroxyvitamin D (14.9 ng/ml vs. 23.9 ng/ml; p < 0.001), PTH (38.7 pg/ml vs. 26.3 pg/ml; p < 0.001) and PINP (89.9 ng/ml vs. 67.6 ng/ml; p < 0.01). The oral contraceptive had a significant effect on serum 25-hydroxyvitamin D, PTH and CTX. Soft tissue injuries were significantly lower in summer compared to winter period (winter = 24, summer = 13; p < 0.05). Conclusions: Professional ballerinas characterized by a high incidence of low serum 25-hydroxyvitamin D levels which improve marginally in the summer. These dancers also demonstrate a higher injury incidence in the winter. Oral contraception seems to increase serum 25-hydroxyvitamin D levels and has a positive effect on bone metabolism.
Citation:
Vitamin D status in professional ballet dancers: winter vs. summer. 2013, 16 (5):388-91 J Sci Med Sport
Publisher:
Elsevier
Journal:
Journal of science and medicine in sport / Sports Medicine Australia
Issue Date:
Sep-2013
URI:
http://hdl.handle.net/2436/607246
DOI:
10.1016/j.jsams.2012.12.010
PubMed ID:
23379989
Type:
Article
Language:
en
ISSN:
1878-1861
Appears in Collections:
Dance Science

Full metadata record

DC FieldValue Language
dc.contributor.authorWolman, Rogeren
dc.contributor.authorWyon, Matthewen
dc.contributor.authorKoutedakis, Yiannisen
dc.contributor.authorNevill, Alan Men
dc.contributor.authorEastell, Richarden
dc.contributor.authorAllen, Nicken
dc.date.accessioned2016-04-27T14:55:07Zen
dc.date.available2016-04-27T14:55:07Zen
dc.date.issued2013-09en
dc.identifier.citationVitamin D status in professional ballet dancers: winter vs. summer. 2013, 16 (5):388-91 J Sci Med Sporten
dc.identifier.issn1878-1861en
dc.identifier.pmid23379989en
dc.identifier.doi10.1016/j.jsams.2012.12.010en
dc.identifier.urihttp://hdl.handle.net/2436/607246en
dc.description.abstractObjective: Serum 25-hydroxyvitamin D is produced by the exposure of the skin to sunlight. Therefore athletes who train indoors, such as dancers, are vulnerable to vitamin D deficiency. The purpose of the study was to evaluate the serum 25-hydroxyvitamin D status in UK professional dancers during periods of reduced and increased sunlight exposure (i.e., winter vs. summer), and to assess the impact on bone metabolism and risk of injury. Design: Cohort study. Methods: 19 elite classical ballet dancers (age 26±8.86 yr; height 1.66±8.84 m; mass 54.3±10.47 kg) were monitored over a 6 month period for 25-hydroxyvitamin D, PTH and blood serum bone turnover markers (CTX and PINP) along with injury data. Repeated measure ANOVA and Wilcoxon and Chi-square analyses were used and significance was set at p≤0.05. Results: Significant changes were noted between the winter andsummertest dates for 25-hydroxyvitamin D (14.9 ng/ml vs. 23.9 ng/ml; p < 0.001), PTH (38.7 pg/ml vs. 26.3 pg/ml; p < 0.001) and PINP (89.9 ng/ml vs. 67.6 ng/ml; p < 0.01). The oral contraceptive had a significant effect on serum 25-hydroxyvitamin D, PTH and CTX. Soft tissue injuries were significantly lower in summer compared to winter period (winter = 24, summer = 13; p < 0.05). Conclusions: Professional ballerinas characterized by a high incidence of low serum 25-hydroxyvitamin D levels which improve marginally in the summer. These dancers also demonstrate a higher injury incidence in the winter. Oral contraception seems to increase serum 25-hydroxyvitamin D levels and has a positive effect on bone metabolism.en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsArchived with thanks to Journal of science and medicine in sport / Sports Medicine Australiaen
dc.subjectVitamin Den
dc.subjectBone metabolismen
dc.subjectInjuryen
dc.subjectOral contraceptiveen
dc.subject.meshAdulten
dc.subject.meshDancingen
dc.subject.meshFemaleen
dc.subject.meshHumansen
dc.subject.meshMaleen
dc.subject.meshSeasonsen
dc.subject.meshVitamin Den
dc.subject.meshYoung Adulten
dc.titleVitamin D status in professional ballet dancers: winter vs. summer.en
dc.typeArticleen
dc.identifier.journalJournal of science and medicine in sport / Sports Medicine Australiaen

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