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The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes

This study aimed to examine the vitamin D status of professional volleyball athletes and to determine its correlation with shoulder muscle strength. We included 52 healthy male professional volleyball players (23.2 ± 4.5 years), who were categorized by vitamin D status (<20 ng/mL: deficiency, 20–...

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Autores principales: Kim, Do Kyung, Park, Geon, Kuo, Liang-Tseng, Park, Won Hah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6893407/
https://www.ncbi.nlm.nih.gov/pubmed/31739527
http://dx.doi.org/10.3390/nu11112768
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author Kim, Do Kyung
Park, Geon
Kuo, Liang-Tseng
Park, Won Hah
author_facet Kim, Do Kyung
Park, Geon
Kuo, Liang-Tseng
Park, Won Hah
author_sort Kim, Do Kyung
collection PubMed
description This study aimed to examine the vitamin D status of professional volleyball athletes and to determine its correlation with shoulder muscle strength. We included 52 healthy male professional volleyball players (23.2 ± 4.5 years), who were categorized by vitamin D status (<20 ng/mL: deficiency, 20–30 ng/mL: insufficiency, and >30 ng/mL: sufficiency). We examined the strength of the internal rotator (IR) and external rotator (ER) muscles of the shoulder by using an isokinetic dynamometer. Fourteen players (26.9%) had vitamin D deficiency, 24 players (46.2%) were vitamin D-insufficient, and 14 players (26.9%) were vitamin D-sufficient. There was no significant correlation between vitamin D level and shoulder muscle strength at 60°/s (IR, r = 0.159, p = 0.26; ER, r = 0.245, p = 0.08) and at 180°/s (IR, r = −0.093, p = 0.51; ER, r = −0.037, p = 0.79). Moreover, the isokinetic shoulder strengths were not significantly different across the three groups in all settings. In conclusion, vitamin D insufficiency was common in elite volleyball players. Though not being associated with isokinetic muscle weakness, vitamin D levels should be regularly monitored, and vitamin D should be supplied to young elite athletes, considering its importance for musculoskeletal health.
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spelling pubmed-68934072019-12-23 The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes Kim, Do Kyung Park, Geon Kuo, Liang-Tseng Park, Won Hah Nutrients Article This study aimed to examine the vitamin D status of professional volleyball athletes and to determine its correlation with shoulder muscle strength. We included 52 healthy male professional volleyball players (23.2 ± 4.5 years), who were categorized by vitamin D status (<20 ng/mL: deficiency, 20–30 ng/mL: insufficiency, and >30 ng/mL: sufficiency). We examined the strength of the internal rotator (IR) and external rotator (ER) muscles of the shoulder by using an isokinetic dynamometer. Fourteen players (26.9%) had vitamin D deficiency, 24 players (46.2%) were vitamin D-insufficient, and 14 players (26.9%) were vitamin D-sufficient. There was no significant correlation between vitamin D level and shoulder muscle strength at 60°/s (IR, r = 0.159, p = 0.26; ER, r = 0.245, p = 0.08) and at 180°/s (IR, r = −0.093, p = 0.51; ER, r = −0.037, p = 0.79). Moreover, the isokinetic shoulder strengths were not significantly different across the three groups in all settings. In conclusion, vitamin D insufficiency was common in elite volleyball players. Though not being associated with isokinetic muscle weakness, vitamin D levels should be regularly monitored, and vitamin D should be supplied to young elite athletes, considering its importance for musculoskeletal health. MDPI 2019-11-14 /pmc/articles/PMC6893407/ /pubmed/31739527 http://dx.doi.org/10.3390/nu11112768 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Do Kyung
Park, Geon
Kuo, Liang-Tseng
Park, Won Hah
The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes
title The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes
title_full The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes
title_fullStr The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes
title_full_unstemmed The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes
title_short The Relationship between Vitamin D Status and Rotator Cuff Muscle Strength in Professional Volleyball Athletes
title_sort relationship between vitamin d status and rotator cuff muscle strength in professional volleyball athletes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6893407/
https://www.ncbi.nlm.nih.gov/pubmed/31739527
http://dx.doi.org/10.3390/nu11112768
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