Citation

Celebrini RG, Eng JJ, Miller WC, Ekegren CL, Johnston JD, Depew TA, Macintyre DL. Clin. J. Sport. Med. 2014; 24(2): 134-141.

Affiliation

*Graduate Program in Rehabilitation Sciences, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; Departments of †Physical Therapy; and ‡Occupational Science and Occupational Therapy, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; §Department of Epidemiology and Preventive Medicine, Monash University, Victoria, Australia; ¶Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Saskatoon, Canada; and ‖Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada.

Copyright

(Copyright © 2014, Canadian Academy of Sport Medicine, Publisher Lippincott Williams and Wilkins)

DOI

10.1097/JSM.0000000000000014

PMID

24184850

Abstract

OBJECTIVE:: To determine the effect of a novel movement strategy incorporated within a soccer warm-up on biomechanical risk factors for anterior cruciate ligament injury during 3 sport-specific movement tasks. DESIGN:: Single-blind, randomized controlled clinical trial. SETTING:: Laboratory setting. PARTICIPANTS:: Twenty top-tier female teenage soccer players. INTERVENTIONS:: Subjects were randomized to the Core Position and Control movement strategy (Core-PAC) warm-up or standard warm-up, which took place before their regular soccer practice over a 6-week period. The Core-PAC focuses on getting the centre of mass closer to the plant foot or base of support. MAIN OUTCOME MEASURES:: Peak knee flexion angle and abduction moments during a side-hop (SH), side-cut, and unanticipated side-cut task after the 6 weeks with (intervention group only) and without a reminder to use the Core-PAC strategy. RESULTS:: The Core-PAC group increased peak flexion angles during the SH task [mean difference = 6.2 degrees; 95% confidence interval (CI), 1.9-10.5 degrees; effect size = 1.01, P = 0.034] after the 6-week warm-up program without a reminder. In addition, the Core-PAC group demonstrated increased knee flexion angles for the side-cut (mean difference = 8.5 degrees; 95% CI, 4.8-12.2 degrees; ES = 2.02; P = 0.001) and SH (mean difference = 10.0 degrees; 95% CI, 5.7-14.3 degrees; ES = 1.66; P = 0.001) task after a reminder. No changes in abduction moments were found. CONCLUSIONS:: The results of this study suggest that the Core-PAC may be one method of modifying high-risk soccer-specific movements and can be implemented within a practical, team-based soccer warm-up. The results should be interpreted with caution because of the small sample size.

Language: en