Severely obese people with vitamin D deficiency may be less mobile than those with normal levels of the vitamin, a new study says.
Poor physical functioning can reduce quality of life and increase the risk of early death, the researchers noted.
The study included 252 severely obese people who were timed as they walked 1,640 feet and climbed up and down a single step 50 times. The participants also gave blood samples and estimates of their levels of physical activity.
Those with the lowest vitamin D levels had the slowest walking times and the lowest amounts of physical activity, according to the study published April 15 in theJournal of Clinical Endocrinology & Metabolism.
"People with severe obesity already are eight times more likely to have poor physical function than people with a healthy [body weight]," study co-author Tomas Ahern, of St. Columcille's Hospital and St. Vincent's University Hospital in Dublin, Ireland, said in a journal news release. http://www.nlm.nih.gov/medlineplus/news/fullstory_145690.html
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