Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in Tunisia

Recent reports suggest that hypovitaminosis D in athletes is as common as in the general population. This study was devised to examine vitamin D status and determinants of deficiency in athletes living in a sunny country (Tunisia). One hundred and fifty national elite athletes, training outdoors (n=...

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Main Authors: A Sghaier-Ayadi, M Feki, I Bezrati-Ben Ayed, O Abene, MK Ben Fredj, K Kaabachi, A Chaouachi
Format: Article
Language:English
Published: Termedia Publishing House 2015-11-01
Series:Biology of Sport
Subjects:
Online Access:http://www.termedia.pl/Vitamin-D-status-and-determinants-of-deficiency-in-non-supplemented-athletes-during-the-winter-months-in-Tunisia,78,26185,1,1.html
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author A Sghaier-Ayadi
M Feki
I Bezrati-Ben Ayed
O Abene
MK Ben Fredj
K Kaabachi
A Chaouachi
author_facet A Sghaier-Ayadi
M Feki
I Bezrati-Ben Ayed
O Abene
MK Ben Fredj
K Kaabachi
A Chaouachi
author_sort A Sghaier-Ayadi
collection DOAJ
description Recent reports suggest that hypovitaminosis D in athletes is as common as in the general population. This study was devised to examine vitamin D status and determinants of deficiency in athletes living in a sunny country (Tunisia). One hundred and fifty national elite athletes, training outdoors (n=83) or indoors (n=67), were enrolled from January to February 2012. Plasma 25-hydroxyvitamin D was measured by radioimmunoassay. Concentrations were between 50 and 75 nmol · l -1 in 21.3% of participants, between 25 and 50 nmol · l -1 in 55.3% of participants and <25 nmol · l -1 in 14.7% of participants. The concentrations were significantly lower in indoor athletes than outdoor athletes (36.2±19.0 nmol · l -1 vs. 49.1±19.2 nmol · l -1 ; p<0.001). In multivariate analysis, vitamin D deficiency (25-hydroxyvitamin D <50 nmol · l -1 ) was associated with indoor sports [multi-adjusted odds ratio (95% confidence interval), 5.03 (1.64-15.4); p=0.005], female gender [3.72 (1.44-9.65); p=0.007] and age < 18 years [2.40 (1.01-5.85); p=0.05]. Athletes living in sun-rich environments are exposed to a high risk of vitamin D inadequacy. Given the importance of vitamin D in health and athletic ability, targeting sufficient levels of plasma 25-hydroxyvitamin D in athletes is well justified.
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spelling doaj.art-4cb1430fb4c844a3be5dd1ea9cae6e652022-12-21T19:53:46ZengTermedia Publishing HouseBiology of Sport0860-021X2083-18622015-11-0132428128710.5604/20831862.116369026185Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in TunisiaA Sghaier-AyadiM FekiI Bezrati-Ben AyedO AbeneMK Ben FredjK KaabachiA ChaouachiRecent reports suggest that hypovitaminosis D in athletes is as common as in the general population. This study was devised to examine vitamin D status and determinants of deficiency in athletes living in a sunny country (Tunisia). One hundred and fifty national elite athletes, training outdoors (n=83) or indoors (n=67), were enrolled from January to February 2012. Plasma 25-hydroxyvitamin D was measured by radioimmunoassay. Concentrations were between 50 and 75 nmol · l -1 in 21.3% of participants, between 25 and 50 nmol · l -1 in 55.3% of participants and <25 nmol · l -1 in 14.7% of participants. The concentrations were significantly lower in indoor athletes than outdoor athletes (36.2±19.0 nmol · l -1 vs. 49.1±19.2 nmol · l -1 ; p<0.001). In multivariate analysis, vitamin D deficiency (25-hydroxyvitamin D <50 nmol · l -1 ) was associated with indoor sports [multi-adjusted odds ratio (95% confidence interval), 5.03 (1.64-15.4); p=0.005], female gender [3.72 (1.44-9.65); p=0.007] and age < 18 years [2.40 (1.01-5.85); p=0.05]. Athletes living in sun-rich environments are exposed to a high risk of vitamin D inadequacy. Given the importance of vitamin D in health and athletic ability, targeting sufficient levels of plasma 25-hydroxyvitamin D in athletes is well justified.http://www.termedia.pl/Vitamin-D-status-and-determinants-of-deficiency-in-non-supplemented-athletes-during-the-winter-months-in-Tunisia,78,26185,1,1.htmlcholecalciferol hypovitaminosis D sun exposure vitamin D inadequacy
spellingShingle A Sghaier-Ayadi
M Feki
I Bezrati-Ben Ayed
O Abene
MK Ben Fredj
K Kaabachi
A Chaouachi
Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in Tunisia
Biology of Sport
cholecalciferol
hypovitaminosis D
sun exposure
vitamin D inadequacy
title Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in Tunisia
title_full Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in Tunisia
title_fullStr Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in Tunisia
title_full_unstemmed Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in Tunisia
title_short Vitamin D status and determinants of deficiency in non-supplemented athletes during the winter months in Tunisia
title_sort vitamin d status and determinants of deficiency in non supplemented athletes during the winter months in tunisia
topic cholecalciferol
hypovitaminosis D
sun exposure
vitamin D inadequacy
url http://www.termedia.pl/Vitamin-D-status-and-determinants-of-deficiency-in-non-supplemented-athletes-during-the-winter-months-in-Tunisia,78,26185,1,1.html
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