THE ABILITY TO CHANGE DIRECTION IS A HIGHLY VALUED ATHLETIC QUALITY IN SPORT AND HAS BEEN MEASURED EXTENSIVELY. DESPITE THE IMPORTANCE AND MAGNITUDE OF RESEARCH ON CHANGE OF DIRECTION (COD) AND AGILITY, THE VALIDITY OF THE PERFORMANCE MEASURES USED TO ASSESS THESE ABILITIES HAVE FACED LIMITED SCRUTINY. A CRITICAL EVALUATION OF OUR CURRENT MEASURES OF COD AND AGILITY ARE PRESENTED. FURTHERMORE, A SUMMARY OF RECOMMENDATIONS TO ENHANCE THE VALIDITY OF COD AND AGILITY ASSESSMENT IS PROVIDED IN THE ULTIMATE EFFORT TO IMPROVE OUR UNDERSTANDING OF THIS CRUCIAL ATHLETIC QUALITY. A VIDEO ABSTRACT DESCRIBING THIS ARTICLE CAN BE FOUND IN SUPPLEMENTAL DIGITAL CONTENT 1 (SEE VIDEO, http://links.lww.com/SCJ/A217).
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1Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia;
2Softball Western Australia, Perth, Australia;
3Applied Sports, Technology, Exercise and Medicine Research Centre, Swansea University, Swansea, United Kingdom; and
4Department of Kinesiology, Center for Sport Performance, California State University, Fullerton, Fullerton, California
Address correspondence to Dr. Sophia Nimphius, email@example.com.
Conflicts of Interest and Source of Funding: The authors report no conflicts of interest and no source of funding.
Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (http://journals.lww.com/nsca-scj).
Sophia Nimphius is an Associate Professor at Edith Cowan University and High Performance Manager at Softball Western Australia.
Samuel J. Callaghan is a PhD Candidate at Edith Cowan University in collaboration with the West Australian Cricket Association.
Neil E. Bezodis is a Senior Lecturer in Biomechanics and Technology at Swansea University.
Robert G. Lockie is an Assistant Professor in the Department of Kinesiology at California State University - Fullerton.