The Relationship between Vitamin D Levels, Injury and Muscle Function
                    in Adolescent Dancers

Iris Iasmine de Rezende Araújo; Lucas Henrique Ferreira Sampaio; Adriano Jabur Bittar; Tânia Cristina Dias da Silva Hamu; Matthew Alexander Wyon; Cibelle Kayenne Martins Roberto Formiga

doi:10.1055/a-1087-2130

International Journal of Sports Medicine, Table of Contents

Int J Sports Med 2020; 41(06): 360-364
DOI: 10.1055/a-1087-2130

Physiology & Biochemistry

The Relationship between Vitamin D Levels, Injury and Muscle Function in Adolescent Dancers

Iris Iasmine de Rezende Araújo

¹Health Science, Universidade Estadual de Goiás, Anapolis, Brazil

,

Lucas Henrique Ferreira Sampaio

²Laboratory of Immunology, Universidade Estadual de Goiás, Anapolis, Brazil

,

Adriano Jabur Bittar

³Dance Department, Universidade Estadual de Goiás, Anapolis, Brazil

,

Tânia Cristina Dias da Silva Hamu

⁴Laboratory of Musculoskeletal Research, Universidade Estadual de Goiás, Anapolis, Brazil

,

Matthew Alexander Wyon

⁵Institute of Human Sciences, University of Wolverhampton, Walsall, United Kingdom of Great Britain and Northern Ireland

⁶National Institute of Dance Medicine and Science, Research, Birmingham, United Kingdom of Great Britain and Northern Ireland

,

Cibelle Kayenne Martins Roberto Formiga

⁴Laboratory of Musculoskeletal Research, Universidade Estadual de Goiás, Anapolis, Brazil

› Author Affiliations

Abstract

Vitamin D has been shown to benefit a diverse range of health functions including muscle function. The aim of the present study was to identify serum 25(OH)D3 levels in a sample of adolescent dancers and compare them to muscle function and injury incidence. We incorporated a cross-sectional design to study 49 pre-professional male and female dancers (17±4.44 yrs, 52.1±6.72 kg, 1.63±0.07 m) in full-time training in Bazil. Serum 25[OH]D3 was analyzed by Enzyme-linked Immunosorbent Assay; quadriceps and hamstring peak torque and muscle fatigue were measured by isokinetic dynamometer at 60 and 300° s⁻¹. Injury type and location in the previous 6-months were determined by self-report questionnaire. Participants were categorized into 2 groups: normal or insufficient/deficient (>or<30 ng/ml 25[OH]D3). Results indicated the normal serum 25[OH]D3 group had significantly lower fatigue rates than the insufficient/deficient group (p<0.05) but not for the other muscle function parameters. Fifty-seven percent of participants reported at least 1 injury. The most common were sprains (33%) and tendinopathies (19%). Injured dancers had significantly lower peak torque at 60°/s. The link between serum 25[OH]D3 and reduced muscle fatigue resistance has not been shown before, though the underlying mechanisms aren’t apparent and the link between muscular strength and injury has been previously evidenced.

Key words

muscle - serum 25(oh)d - fatigue - dance - muscle strength - power

Full Text

References

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