title: Heart Rate, Technical Performance, and Session-RPE in Elite Youth Soccer Small-Sided Games Played With Wildcard Players.
abstract: The aim of this study was to compare heart rate (HR), rating of perceived exertion (RPE), and technical-tactical actions during small-sided games (SSGs) played without (CTR), with internal (IW), and with IW and external (IEW) wildcard players. A total of 22 young male soccer players (age 17.2 ± 0.9 years) randomly completed six 4vs4 SSG situations. The control conditions occurred with goals scored without goalkeeper (4vs4-NO) and with goalkeeper (4vs4-GK). During the experimental conditions, the situations incorporated 2 IW (4vs4+2IW-NO, 4vs4+2IW-GK) and 2 IEW (4vs4+2IW+2IEW-NO, 4vs4+2IW+2IEW-GK). Processed results did not include data from goalkeepers, IW, and IEW players. The HR was divided in intensity-zones (Z1, Z2, and Z3, for <80%, 80-90%, and >90% of maximal HR, respectively) and the analyzed technical-tactical actions were the pass, dribbling, collective success, and pause. The effects of IW and IEW were analyzed through repeated measures analysis of variance. During 4vs4+2IW+2IEW-NO, greater time was recorded in Z1 (p ≤ 0.05) compared with 4vs4-NO and 4s4+2IW-NO. During 4vs4+2IW+2IEW-GK, greater time was recorded in Z1 and less in Z3 (p ≤ 0.05) compared with 4vs4-GK. Greater RPE was reported in 4vs4-NO (p < 0.01) and 4vs4+2IW-NO (p < 0.01) compared with 4vs4+2IW+2IEW-NO, and during 4vs4-GK (p < 0.01) than 4vs4+2IW+2IEW-GK. Greater number of dribbling situations were recorded during 4vs4-NO (p ≤ 0.05) compared with 4vs4+2IW+2IEW-NO. In conclusion, compared with the control condition of 4vs4, the incorporation of IEW reduced HR, RPE, and dribbling actions.
authors.affiliation: 1Research Group in Planification and Assessment in Training and Sports Performance, Pontifical University of Salamanca, Salamanca, Spain; 2Faculty of Health Sciences, European Atlantic University, Santander, Spain; 3Department of Physical Education, Sport and Recreation, University of La Frontera, Temuco, Chile; 4Department of Physical Activity Sciences, University of Los Lagos, Osorno, Chile; 5Research Nucleus in Health, Physical Activity and Sports, University of Los Lagos, Osorno, Chile; and 6CreativeLab, Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), Vila Real, Portugal.
authors.forename: Javier
authors.initials: J
authors.lastname: Sanchez-Sanchez
authors.forename: Daniel
authors.initials: D
authors.lastname: Hernández
authors.forename: David
authors.initials: D
authors.lastname: Casamichana
authors.forename: Cristian
authors.initials: C
authors.lastname: Martínez-Salazar
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Ramirez-Campillo
authors.forename: Jaime
authors.initials: J
authors.lastname: Sampaio
mesh_terms: D000293:Adolescent; D054874:Athletic Performance / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D010465:Perception; D012916:Soccer / Q000502:physiology*