Clinical Burden of Injuries in Students at a Professional Circus College: A 7.5-Year Longitudinal Study.

Objective: To characterize clinical burden of injuries incurred by circus students enrolled in a 3-year college training program.

Methods: Student (n=334) injury data derived from an in situ clinic was examined over a 7.5-year time frame from August 2009 to December 2016.

Comparison of Common Methodologies for the Determination of Knee Flexor Muscle Strength.

Background: Knee flexion strength may hold important clinical implications for the determination of injury risk and readiness to return to sport following injury and orthopedic surgery. A wide array of testing methodologies and positioning options are available that require validation prior to clinical integration. The purpose of this study was to 1) investigate the validity and test-retest reliability of isometric knee flexion strength measured by a fixed handheld dynamometer (HHD) apparatus compared to a Biodex Dynamometer (BD), 2) determine the impact of body position (seated versus supine) and foot position (plantar- vs dorsiflexed) on knee flexion peak torque and 3) establish the validity and test-retest reliability of the NordBord Hamstring Dynamometer.