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Multidirectional Leg Asymmetry Assessment in Sport

Hewit, Jennifer MSc, CSCS1; Cronin, John PhD1,2; Hume, Patria PhD1

Strength & Conditioning Journal:
doi: 10.1519/SSC.0b013e31823e83db
Article
Abstract

LEG ASYMMETRY ASSESSMENTS IN ATHLETES CAN PROVIDE VALUABLE PROGNOSTIC/DIAGNOSTIC INFORMATION. THIS BRIEF REVIEW PROVIDES INFORMATION ON OUTCOME MEASURES THAT DESCRIBE LIMB ASYMMETRY (POWER, FORCE, AND DISTANCE/HEIGHT JUMPED), RELIABILITY OF SINGLE-LIMB MULTIDIRECTIONAL ASSESSMENTS, AND EXPECTED MAGNITUDES OF ASYMMETRY IN NONINJURED AND INJURED ATHLETES. THE RELIABILITY (COEFFICIENT OF VARIATION = 2.8–40%, INTRACLASS CORRELATION COEFFICIENT = 0.80–1.0) OF SINGLE-LIMB MULTIDIRECTIONAL LEG ASSESSMENTS ALLOWS STRENGTH AND CONDITIONING COACHES TO USE THESE ASSESSMENTS TO DETECT ASYMMETRIES IN ATHLETES, WHICH MAY PROVIDE INFORMATION ABOUT THE POTENTIAL FOR INJURY AND HENCE GUIDE INJURY PREVENTION PROGRAMMING. EXPECTED MAGNITUDES OF LIMB ASYMMETRY ARE LESS THAN 15% FOR NONINJURED ATHLETES.

Author Information

1Sport Performance Research Institute New Zealand, AUT University, Auckland, New Zealand; and 2School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia

Jennifer Hewit is a PhD student in Biomechanics and Strength and Conditioning at AUT University.

John Cronin is a professor in Strength and Conditioning at AUT University and holds an Adjunct Professorial Position at Edith Cowan University.

Patria Hume is a professor in Human Performance (Sport Biomechanics) at AUT University.

© 2012 National Strength and Conditioning Association