Increased risk of lower back injury during hip extension activities when knees are bent. After complete flexion of the hip (eccentric phase of hip extension), the lumbar spine will flex if movement is continued. The risk of injury is increased if the lumbar spine is not accustomed to this movement and workload. Until flexibility can be restored, recline leg press back support to furthest position and base hip flexion range of motion criteria just before hips tilt. Also see Full Squat Flexibility Q&A.
– Examples of affected exercises:
– Leg Press
– Squat
– Single Leg Squat
– Example Assessments
– Deep Squat Test
– Hip Flexion ROM
– Example preventative/corrective exercise:
– Glute Stretch
– Adductor Magnus Stretch
