Sex Differences in Eccentric Hip-Abductor Strength and Knee-Joint Kinematics When Landing from a Jump

in Journal of Sport Rehabilitation
View More View Less
Restricted access

Purchase article

USD  $24.95

Student 1 year online subscription

USD  $76.00

1 year online subscription

USD  $101.00

Student 2 year online subscription

USD  $144.00

2 year online subscription

USD  $192.00

Context:

Decelerating movements such as landing from a jump have been proposed to be a common mechanism of injury to the anterior cruciate ligament (ACL).

Objective:

To compare eccentric hip-abductor strength and kinematics of landing between men and women when performing a hopping task.

Setting:

Research laboratory.

Patients:

18 healthy subjects (10 women, 8 men).

Main Outcome Measures:

Eccentric peak torque of the hip abductors and peak knee-joint angles during a 350-millisecond interval after impact.

Results:

No significant sex differences were present, but there was a significant inverse relationship between women's eccentric peak torque and peak knee-valgus angle (r = –.61, P = .03).

Conclusions:

Women with larger eccentric peak torque demonstrated lower peak knee-valgus angles. By not reaching as large of a valgus angle, there is potentially less stress on the ACL. Increasing eccentric hip-abductor strength might improve knee-joint kinematics during landing from a jump.

The authors are with the Division of Athletic Training, University of Kentucky, Lexington, KY 40536-0003.

All Time Past Year Past 30 Days
Abstract Views 225 186 11
Full Text Views 9 6 0
PDF Downloads 13 10 0