The effects of strength training on the lower extremity biomechanics of female recreational athletes during a stop-jump task.

Published

Journal Article

Strength training is considered a strategy for anterior cruciate ligament injury prevention. Little is known about the contribution of strength training to knee and hip biomechanics.Lower extremity muscle strength training alters knee and hip biomechanics during a stop-jump task.Controlled laboratory study.Knee and hip 3-dimensional kinematic and kinetic data were collected for 66 female recreational athletes (33 intervention and 33 control) while performing 3 stop-jump tasks before and after completing a 9-week strength-training program targeting the quadriceps, hamstrings, gluteus medius, and gluteus maximus (intervention) or a 9-week period of no strength training (control). Maximum voluntary isometric contraction strength data were also collected for each subject before the stop-jump tasks in each data collection session. Knee and hip joint angles as well as resultant forces and moments were calculated.The intervention group increased in strength (P < .001 for all muscles). No significant differences were observed in knee and hip kinematics and kinetics between groups before and after the strength-training protocol.Strength training alone does not alter knee and hip kinematics and kinetics in female recreational athletes. Further research is needed to determine the effect of strength training in combination with other intervention methods on lower extremity biomechanics.Strength training as a single intervention method may not be sufficient to reduce the risk of noncontact anterior cruciate ligament injury in female recreational athletes.

Full Text

Duke Authors

Cited Authors

  • Herman, DC; Weinhold, PS; Guskiewicz, KM; Garrett, WE; Yu, B; Padua, DA

Published Date

  • April 2008

Published In

Volume / Issue

  • 36 / 4

Start / End Page

  • 733 - 740

PubMed ID

  • 18212346

Pubmed Central ID

  • 18212346

Electronic International Standard Serial Number (EISSN)

  • 1552-3365

International Standard Serial Number (ISSN)

  • 0363-5465

Digital Object Identifier (DOI)

  • 10.1177/0363546507311602

Language

  • eng