The DOI matches its Crossref record.
Female Distance Runners Training In Southeastern United States Have Adequate Vitamin D Status
Abstract
Background: High rates of vitamin D deficiency have been reported in athletes. The purpose of this study was to evaluate the associations between vitamin D with bone health and parathyroid hormone (PTH) concentrations in female runners who trained at 30.4° degrees north. Methods: Serum 25-hydroxyvitamin D (25(OH) D), PTH, body composition, and bone mineral density (BMD) were measured in 59 female runners, aged 18–40 years. Stress fracture history, training duration and frequency were evaluated by questionnaire. As per National Endocrine Society cut-offs, serum vitamin D ranges were: 25(OH)D < 50 nmol/L for deficient; 50–75 nmol/L for insufficient; and ≥ 75 nmol/L for sufficient status. Results: Mean serum 25(OH)D concentrations were 122.6 ± 63.9 nmol/L, with 18.6% of subjects in the deficient (5.1%) or insufficient (13.5%) range. No significant differences were observed between sufficient and deficient/insufficient subjects for BMD, PTH, history of stress fractures, or demographic data. Conclusions: The majority of distance runners maintained sufficient vitamin D status, suggesting that training outdoors in latitude where vitamin D synthesis occurs year-round reduces the risk for vitamin D deficiency. Data do not support the indiscriminate supplementation of outdoor athletes in southern latitudes without prior screening.
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Metadata
- Authors
- Wentz, L. M., Liu, P.-Y., Ilich, J. Z., & Haymes, E. M.
- Venue
- International Journal of Sport Nutrition and Exercise Metabolism
- Publisher
- Human Kinetics
- Published
- 2016-10
- Volume
- 26
- Issue
- 5
- Pages
- 397-403
- ISSN
- 1526-484X (ISSN-L)
- 1543-2742
- OpenAlex
- W2202186479
- Cited by
- 21
- References
- 0
- Citations by year
- 2026: 3 · 2025: 1 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 4 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 2
- FWCI
- 0.88
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Sport Nutrition and Exercise Metabolism (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Vitamin D Research Studies
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Keywords
- vitamin D status, vitamin D deficiency, female distance runners, athletes, bone mineral density, parathyroid hormone, stress fractures, outdoor exercise, latitude, vitamin D supplementation, body composition
- MeSH terms
- Adolescent, Adult, Bone and Bones, Cross-Sectional Studies, Female, Humans, Nutritional Status, Parathyroid Hormone, Surveys and Questionnaires, Risk Factors, Running, Vitamin D, Vitamin D Deficiency, Southeastern United States, Bone Density, Dietary Supplements, Young Adult, Athletes
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