Vitamin D Status and Muscle Function Among Adolescent and Young Swimmers.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 29
- 主要终点
- Serum 25-hydroxyvitamin D (s-25(OH)D)
研究概览
简要总结
People living at Northern latitudes are at risk of suffering from vitamin D insufficiency due to low sun exposure and the risk may be even more pronounced among elite swimmers since indoor training further reduces sun exposure. In light of this, the investigators want to examine vitamin D status in young elite swimmers and if there is an association between vitamin D status and muscle strength.
详细描述
To examine vitamin D status in young elite swimmers and if there is an association between vitamin D status and muscle strength, twenty-nine swimmers, 12 female and 17 male (16-24 years) residing at latitude 55-56°N were included to the trial conducted in March-April. Blood samples were analysed for serum 25-hydroxyvitamin D (s-25(OH)D) and hand-grip strength was measured as marker of muscle strength. Subjects´ vitamin D and calcium intake were assessed by food frequency questionnaire and sun exposure and training status by questionnaires.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 16 Years 至 35 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Age: 16-35 years
- •Top atlets, conducting:
- •Hard physical activity
- •Indoor elitesport min. 10 hours a week
- •Healthy, without use of any medications
- •Eat fish max 2 times per week
排除标准
- •Use of corticosteroids
- •Use of supplements
- •Use of solarium
- •Donation of blood within the last 3 months
- •Having spent time below the latitude of 42° north from September through April
结局指标
主要结局
Serum 25-hydroxyvitamin D (s-25(OH)D)
时间窗: 2 months
次要结局
- Hand-grip strength(2 months)
- Food frequency questionnaire(One week)
研究者
Arne Astrup
Professor
University of Copenhagen