Hamstring Fatigue After Injury: Knee Flexor Torque Changes Identify Previous Injury in Football Players (ptpodcast.com)

• Eccentric knee flexor torque declines more in previously injured hamstrings after fatigue.
• Fatigue protocols may identify residual deficits not apparent in rested state.
• Rehabilitation should focus on eccentric strength and endurance.

"A study in the Scandinavian Journal of Medicine & Science in Sports found that football players with a history of hamstring injury exhibit altered knee flexor torque after fatiguing exercise compared to uninjured players. The research, involving 21 previously injured and 21 uninjured male footballers, measured concentric and eccentric knee flexor torque before and after a fatigue protocol. Previously injured legs showed greater declines in eccentric torque, particularly at longer muscle lengths. This suggests that residual neuromuscular deficits persist post-injury, potentially increasing reinjury risk."