FrieslandCampina, Amersfoort, The Netherlands.
Eur J Clin Nutr. 2013 Apr;67(4):360-5. doi: 10.1038/ejcn.2013.22. Epub 2013 Feb 13.
BACKGROUND/OBJECTIVES: Physical activity (PA) may have an impact on vitamin D status. The aim of the present study is to assess the contribution of different characteristics of PA (duration, intensity as estimated by energy expenditure, location) to vitamin D status.
SUBJECTS/METHODS: The study was conducted in 1255 community-dwelling older men and women of the Longitudinal Aging Study Amsterdam (LASA). Cross-sectional relationships between PA and serum 25-hydroxyvitamin D (25(OH)D) concentrations were examined.
Total PA, both indoor and outdoor PA, expressed in kcal/d was positively associated with 25(OH)D in women (P<0.05) but not in men. The total time spent on these activities was not associated. As compared with the lowest tertile, both men and women in the highest tertile of cycling activity (≈ 6.4 min/d or 34.7 kcal/d) had a ≥ 6 nmol/l higher 25(OH)D (P<0.05). For men and women in the highest tertile of gardening (≥ 8.6 min/d or 87.6 kcal/d), these levels were 14.2 nmol/l (P<0.001) and 5.8 nmol/l 25(OH)D (P<0.05), respectively. Walking showed no association.
Daily time spent on total PA is often included when studying the association between sum of PA and 25(OH)D, while our study showed that energy expenditure might be a better unit. Individual types of outdoor PA with a high intensity, such as gardening and cycling, were associated with 25(OH)D.
背景/目的：体力活动（PA）可能会影响维生素 D 状态。本研究旨在评估 PA 的不同特征（持续时间、通过能量消耗估计的强度、地点）对维生素 D 状态的贡献。
受试者/方法：本研究在阿姆斯特丹纵向老龄化研究（LASA）的 1255 名社区居住的老年男女中进行。研究了 PA 与血清 25-羟维生素 D（25（OH）D）浓度之间的横断面关系。
女性的总 PA（室内和室外 PA），以千卡/天表示，与 25（OH）D 呈正相关（P<0.05），但男性则不然。这些活动的总时间与 25（OH）D 无关。与最低三分位相比，骑自行车活动最高三分位的男性和女性 25（OH）D 分别高出 6 纳摩尔/升（P<0.05）和 6 纳摩尔/升（P<0.05）。对于最高三分位的园艺活动（≥8.6 分钟/天或 87.6 千卡/天）的男性和女性，这些水平分别为 14.2 纳摩尔/升（P<0.001）和 5.8 纳摩尔/升（P<0.05）。步行没有关联。
当研究 PA 总和与 25（OH）D 之间的关联时，通常会包括每天总 PA 所花费的时间，而我们的研究表明能量消耗可能是一个更好的单位。高强度的户外 PA 等个别类型，如园艺和骑自行车，与 25（OH）D 有关。
