Serum cartilage oligomeric matrix protein accumulation decreases significantly after 12 weeks of running but not swimming and cycling training - a randomised controlled trial.

Background: Acute effects of physical exercise on the deformational behaviour of articular cartilage and changes in cartilage oligomeric matrix protein (COMP) are definite. However, conclusive positive effects of fitness exercise on functional adaptation of articular cartilage have not been proved.

Aim: Therefore, in this parallel-group randomised controlled trial, we tested the hypothesis that adequate amount of physical exercise with enough impact would be able to stimulate the functional behaviour of articular cartilage.

The effect of hip rotation on bone mineral density of the proximal femur measured by dual energy X-ray absorptiometry.

Objectives: The aim of this study was to compare the effect of lower extremity position changes on hip bone mineral density measured by dual energy X-ray absorptiometry.

Patients And Methods: Sixty-nine healthy university students (30 men, 39 women; mean age 21.9+/-1.

Comparison of landing maneuvers between male and female college volleyball players.

Objective: To compare differences in kinematic and kinetic parameters of knee, hip and ankle joints between male and female college volleyball players.

Design: Cross-sectional study.

Background: Landing injuries, which usually involve anterior cruciate ligament injuries, are common in volleyball with a higher incidence in females.