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Invited commentary: physical activity and vitamin d.
MedLine Citation:
PMID:  18562443     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Exercise and vitamin D are both important for musculoskeletal health. In this issue of the Journal, Scragg and Camargo (Am J Epidemiol 2008;168:577-86) provide a new analysis of relatively old data on physical activity and vitamin D from the Third National Health and Nutrition Examination Survey (1988-1994). This commentary considers the methodological strengths and weaknesses of the study and concludes that the findings are as robust as could reasonably be expected from a cross-sectional design. Consideration is given to whether outdoor exercise is the cause of higher vitamin D levels and, if so, whether mortality gains may accrue from more widespread participation. A note of caution is sounded, given the disappointing results on studies of the prevention of falls and fractures with vitamin D supplementation in community-dwelling populations. However, this is an important observation, and more epidemiologic studies are needed, preferably including care home residents. Applied researchers should consider further studies of vitamin D supplementation in older people, possibly combined with an exercise intervention. Public health professionals and practicing clinicians should recognize that there is a rationale for recommending outdoor exercise, and they should seek to improve universal accessibility.
Authors:
Fraser Birrell; Roger M Francis
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Publication Detail:
Type:  Journal Article     Date:  2008-06-18
Journal Detail:
Title:  American journal of epidemiology     Volume:  168     ISSN:  1476-6256     ISO Abbreviation:  Am. J. Epidemiol.     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-09-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7910653     Medline TA:  Am J Epidemiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  587-9     Citation Subset:  IM    
Affiliation:
Musculoskeletal Research Group, Newcastle University, Newcastle upon Tyne, United Kingdom.
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