TOO LITTLE OR EQUALLY MOST DANGEROUS SPORTS FOR KNEE

Lack of physical activity in middle age may cause the deterioration of cartilage in the knee and the risk of knee osteoarthritis. But based on research, too much physical activity in this age also have the same risks.

A new study says that high levels of physical activity and low, they may accelerate cartilage damage to the knee in adults who have middle-aged.

Researchers at the University of California San Francisco (UCSF) have previously found an association between physical activity with cartilage degeneration. However, the study only focused on one point of time.

UCSF researchers see changes in knee cartilage in a group of middle-aged adults during the 4-year study period. Researchers used magnetic resonance imaging (MRI)-based T2 relaxation time (part-time) to track the evolution of early degenerative changes in the knee cartilage.

"T2 relaxation time produced by MRI allows for the analysis of biochemical and molecular composition of cartilage. An increase in water mobility in damaged cartilage, and the resulting increase in water mobility increased T2 relaxation time, "Wilson said Lin, who led the study.

Researchers analyzed 205 patients aged 45 to 60 years, from UCSF Osteoarthritis Initiative, a national study funded by the National Institutes of Health for the prevention and treatment of knee osteoarthritis.
Participants were asked to fill out questionnaires to record their physical activity then researchers measured T2 values ​​of cartilage in the femur, tibia and patella of the right knee joint at baseline, 2-year and 4-year study at the end of the study.

According to the study, people who often participate in sports such as running with high intensity, have been associated with a more degenerate cartilage and increased risk for development of osteoarthritis.

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