Learning Objectives:

- Compare and contrast the changes in biceps femoris length (BFL) and knee/hip joint angles at peak knee muscle torque (PKMT) during the late swing phase of submaximal running on uphill, level, and downhill surfaces. - Determine whether the peak knee muscle torque (PKMT) experienced by the hamstrings during the late swing phase of submaximal running is significantly altered by changes in surface slope. - Propose a rationale for the use of a surface slope progression (e.g., downhillà levelàuphill) in the rehabilitation of hamstring strains, specifically to progressively increase the strain imposed on the muscle during submaximal running.

Keywords: Hamstring; Rehabilitation; Incline, Decline