Physical Fitness Performance of Young Professional Soccer Players Does not Change During Several Training Seasons in a Spanish Elite Reserve Team Club Study, 1996–2013 ErratumThe Journal of Strength & Conditioning Research: December 2018 - Volume 32 - Issue 12 - p e60 doi: 10.1519/JSC.0000000000002913 Manuscript Clarification Author InformationAuthors Article MetricsMetrics Received September 06, 2018 Accepted September 06, 2018 Copyright © 2018 by the National Strength & Conditioning Association.