Athletic Performance and Vitamin D

Cannell, John; Hollis, Bruce W.; Sorenson, Marc B.; Taft, Timothy N.; Anderson, John J.B.

doi:10.1249/mss.0b013e3181930c2b

Cited by 239 publications

(264 citation statements)

References 53 publications

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“…There are several possible explanations for this observation including the lower serum 25(OH)D which is also known to have an adverse effect on muscle function. 1,14,15 However we detected no significant associations between the rise in 25(OH)D from winter to summer and the fall in injury incidence. Although this may have been due to the relatively low power of the current study, there are other possible explanations.…”

Section: Discussioncontrasting

confidence: 71%

“…10 Dancers also demonstrate high incidence of injury which has been partly explained by inadequate levels of physical fitness, 11 particularly by low levels of muscular strength. 12,13 Inadequate muscular strength has been associated with vitamin D deficiency in athletes 14,15 and non-athletes 16,17 alike. However, Wang and DeLuca 18 suggested that the effect of vitamin D on muscle function might be indirect as they could not detect a known vitamin D receptor in skeletal muscle.…”

Section: Introductionmentioning

confidence: 99%

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Vitamin D status in professional ballet dancers: Winter vs. summer

Wolman

Wyon

Koutedakis

et al. 2013

Journal of Science and Medicine in Sport

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Section: Discussioncontrasting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Vitamin D status in professional ballet dancers: Winter vs. summer

Wolman

Wyon

Koutedakis

et al. 2013

Journal of Science and Medicine in Sport

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“…This may be a result of a number of factors including the training intensity, age of subjects or other protective mechanisms within the cohort. In the mid-20th century athletes were supposedly using UV light as a performance aid, although scientific evidence to support its use was limited (29)(30)(31) . Severe 25(OH)D deficiency is known to be associated with reduced type II muscle fibre composition (44)(45)(46)(47) and the sarcopenia associated with ageing is thought to be affected by 25(OH)D concentrations (48)(49)(50) .…”

Section: Discussionmentioning

confidence: 99%

Vitamin D deficiency is endemic in Middle Eastern sportsmen

Hamilton

Grantham

Racinais

et al. 2010

Public Health Nutr.

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Objective: While vitamin D deficiency is well recognized in Middle Eastern women as a result of cultural norms of remaining covered, Middle Eastern men are an under-reported group. Vitamin D is now known to have multiple effects, including an impact on muscle function, thereby increasing the relevance for sportsmen. The aim of the present study was to evaluate serum 25-hydroxyvitamin D (25(OH)D) levels in young male Middle Eastern athletes. Design: Cross-sectional study. Setting: Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar. Subjects: Ninety-three Middle Eastern men presenting to hospital for an annual screening undertook a blood test to evaluate their vitamin D status. Results: Ninety-one per cent of athletes were found to be deficient in 25(OH)D (serum concentration ,20 ng/ml). Athletes with severe deficiencies were significantly younger than those with less marked deficiency. A subset of athletes underwent bone mineral density assessment and 59 % were shown to have at least one Z-score less than 21; despite this, however, no athletes reported a stress fracture. There was no correlation between 25(OH)D concentration and sunlight exposure, skin coverage and skin colouring.

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“…Mechanisms in the bone protection repertoire of vitamin D also include reduction of the excessive bone remodeling that increases bone fragility, reduction in fracture rate, and improvement in neuromuscular function [4,37]. Reduction in fracture rate and improvement in neuromuscular function have been known for a long time from the finding that vitamin D-producing ultraviolet B irradiation improves athletic performance (for a review, see Cannell et al [9]). In fact, muscle power is associated with 25-hydroxyvitamin D levels [46].…”

Section: Importance Of Vitamin D To Musculoskeletal and Extraskeletalmentioning

confidence: 99%

“…Vitamin D not only controls calcium homeostasis and bone turnover [19] but also has been implicated in the risk of overall mortality [30], cancer [25], diabetes [25], musculoskeletal disorders [25], physical performance [9], hypertension [25], cardiovascular diseases [25], and autoimmune diseases [25]. However, no consensus exists concerning the minimum serum concentration of 25-hydroxyvitamin D necessary to guarantee optimal health.…”

Section: Introductionmentioning

confidence: 99%

How Much Vitamin D Do We Need for Skeletal Health?

Domarus

Brown

Barvencik

et al. 2011

Clinical Orthopaedics &Amp; Related Research

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Background Vitamin D is critical for musculoskeletal health and has been implicated in the risk of extraskeletal diseases, including cancer, cardiovascular diseases, and autoimmune diseases, as well as overall mortality. Although numerous studies deal and have dealt with vitamin D deficiency and its consequences, experts cannot agree on the right 25-hydroxyvitamin D levels. This survey aims to shed light on the ongoing vitamin D controversy from different angles. Questions/purposes We discuss the minimum threshold for the 25-hydroxyvitamin D level to guarantee optimal health, why vitamin is D critical to musculoskeletal and extraskeletal functions, and new evidence for the success of prevention measures such as food fortification. Methods We searched PubMed, Google Scholar, and reference lists of articles using several keywords. The most recent search was in February 2011. Results While the use of parathyroid hormone as a surrogate measure did not lead to a consensus concerning the required 25-hydroxyvitamin D serum level, the combined analysis of bone mineralization and vitamin D status has established minimum levels of more than 75 nmol/L (30 ng/mL) to guarantee at least skeletal health. An effective measure to approach this status is food fortification, which has been demonstrated by countries such as Canada, the United States, and Finland. Conclusions Given the health economic implications of failure to maintain a balanced vitamin D status, action is recommended to integrate current scientific knowledge on vitamin D into physicians' treatment of patients and governmental policies on food fortification.

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Athletic Performance and Vitamin D

Cited by 239 publications

References 53 publications

Vitamin D status in professional ballet dancers: Winter vs. summer

Vitamin D status in professional ballet dancers: Winter vs. summer

Vitamin D deficiency is endemic in Middle Eastern sportsmen

How Much Vitamin D Do We Need for Skeletal Health?

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