. . . Published ahead of Print Medicine & Science in Sports & Exercise ® Published ahead of Print contains articles in unedited manuscript form that have been peer reviewed and accepted for publication. This manuscript will undergo copyediting, page composition, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered that could affect the content. Copyright © 2016 American College of Sports Medicine Sprint Acceleration Mechanics in Master Athletes Patricia D. Pantoja 1 , Eduardo Saez de Villarreal 2 , Jeanick Brisswalter 3 , Leonardo A. Peyré-Tartaruga 1 , and Jean-Benoit Morin 3 1 Exercise Research Laboratory, School of Physical Education, Physical Therapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; 2 Faculty of Sport Sciences, University Pablo de Olavide, Sevilla, Spain; 3 Laboratory of Human Motricity, Education Sport and Health, University of Nice Sophia Antipolis, Nice, France Accepted for Publication: 28 June 2016 ACCEPTED