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Role of the Penultimate Foot Contact During Change of Direction

Implications on Performance and Risk of Injury

Dos'Santos, Thomas, MSc, CSCS1; Thomas, Christopher, MSc, CSCS1,2; Comfort, Paul, PhD, CSCS*D1; Jones, Paul A., PhD, CSCS1

Strength & Conditioning Journal: February 2019 - Volume 41 - Issue 1 - p 87–104
doi: 10.1519/SSC.0000000000000395
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ABSTRACT MOST CHANGE OF DIRECTION BIOMECHANICAL INVESTIGATIONS AND CURRENT TECHNIQUE GUIDELINES FOCUS ON THE ROLE OF THE FINAL FOOT CONTACT. HOWEVER, IT IS EVIDENT THAT PENULTIMATE FOOT CONTACT BRAKING CHARACTERISTICS PLAY AN INTEGRAL ROLE IN DECELERATION BEFORE DIRECTIONAL CHANGES ≥60°; AND CAN THEREFORE, BE DESCRIBED AS A “PREPARATORY STEP.” IN THIS REVIEW, WE EXAMINE THE ROLE OF THE PENULTIMATE FOOT CONTACT ON CHANGE OF DIRECTION PERFORMANCE AND BIOMECHANICAL INJURY RISK FACTORS, AND PROVIDE TECHNICAL GUIDELINES FOR COACHING THE “PREPARATORY STEP” DURING CHANGE OF DIRECTION, TO ENHANCE PERFORMANCE AND REDUCE RISK OF INJURY. A VIDEO ABSTRACT DESCRIBING THIS ARTICLE CAN BE FOUND IN SUPPLEMENTAL DIGITAL CONTENT 1 (SEE VIDEO, HTTP://LINKS.LWW.COM/SCJ/A240).

1Human Performance Laboratory, Directorate of Sport, Exercise, and Physiotherapy, University of Salford, Greater Manchester, United Kingdom; and

2School of Health, Sport and Professional Practice, University of South Wales, Pontypridd, Wales, United Kingdom

Address correspondence to Thomas Dos'Santos, t.dossantos@edu.salford.ac.uk.

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).

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Thomas Dos'Santosis a PhD student in Biomechanics and Strength and Conditioning at the University of Salford.

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Christopher Thomasis a Lecturer in Strength and Conditioning at the University of South Wales.

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Paul Comfortis a Senior Lecturer and program leader of the MSc Strength and Conditioning at the University of Salford.

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Paul A. Jonesis a Lecturer in Biomechanics and Strength and Conditioning at the University of Salford.

© 2019 by the National Strength & Conditioning Association