Exercise Is Undervalued in Treating
Arthritis By Rosalie Marion Bliss
July 16, 2004
Despite the stiffness and swelling that accompany rheumatoid
arthritis, a regimen of regular physical activity and nutrient-conscious eating
will improve physical function and help stabilize weight, according to results
from a study funded by the Agricultural
Research Service.
Among healthy people, young and old, a lack of regular exercise
and nutritious eating is often hard to detect. But for people with rheumatoid
arthritis and other inflammatory diseases, the effects are more obvious on a
daily basis.
Twenty healthy women and 20 women with rheumatoid arthritis, all
of similar weight and size, were studied. Their total energy expenditures, as
well as energy expended during rest and during exercise, were measured or
estimated. These three measures make up the three major components of the
energy balance equation.
Nutritionist Susan Roberts, rheumatologist Ronenn Roubenoff and
colleagues conducted the study. Roberts is director of the Energy Metabolism
Laboratory at the Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University in Boston, Mass. Roubenoff
has a visiting appointment with the HNRCA.
The researchers found that in women with rheumatoid arthritis,
low energy expenditure due to lack of physical activity was directly linked to
lower overall total energy expenditure.
The study results helped answer a question prompted by several
earlier findings. People with rheumatoid arthritis burn more calories while at
rest, experience muscle wasting and have low body-cell mass (which increases
fat mass). Should women with rheumatoid arthritis eat more to make up for their
accelerated resting metabolisms? The answer is "no," because their natural
tendency to be less active reduces their caloric needs.
The researchers concluded that those with rheumatoid arthritis
should incorporate physical activity into their lives to boost their total
energy expenditure throughout the course of a day. Also, they should moderate
their caloric intake by consuming nutrient-rich diets. The HNRCA study was
published in the American Journal of Clinical
Nutrition.
Read more
about this research in the July issue of Agricultural Research
magazine.
ARS is the U.S. Department of
Agriculture's chief scientific research agency. |