Which muscle group is likely weak when eccentric foot slap occurs?

Eccentric foot slap typically occurs due to weakness in the dorsiflexor muscles, which include the tibialis anterior. When these muscles are unable to control the descent of the foot during activities like walking or running, it can result in the foot slapping against the ground as the heel strikes. This occurs because the dorsiflexors are responsible for lifting the front of the foot during the swing phase of gait and controlling its position as it comes into contact with the ground.

Inadequate strength or control of the dorsiflexors means they cannot effectively manage the movement, leading to a loss of stability and proper foot placement. Therefore, assessing and strengthening the dorsiflexors is crucial for improving gait mechanics and reducing the risk of falling or sustaining injuries during activities that require proper foot control.