Harris-Hayes M, Hillen TJ, Commean PK, et al. - Researchers performed a controlled laboratory cross-sectional study in order to compare 3D hip kinematics during single leg squat (SLsquat) and step down, between people with hip-related groin pain (HRGP) and asymptomatic participants and moreover, to assess associations among hip kinematics, muscle strength, and bony morphology. A total of 40 individuals with HRGP and 40 matched, asymptomatic participants, 18-40 years. They utilized hand-held dynamometry to assess hip abductor and external rotator strength and an 8-camera motion analysis system to quantify 3D kinematics during SLSquat and step down and MRI to quantify bony morphology. It was found that in comparison with asymptomatic people who took part during SLSquat, people with HRGP had smaller hip and knee flexion angles and shallower squat depth throughout single leg squat. Moreover, it was noted that in people with HRGP, smaller hip flexion angles were correlated with hip abductor weakness.