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Int J Sports Med 2018; 39(07): 502-507
DOI: 10.1055/a-0608-4738
Physiology & Biochemistry
© Georg Thieme Verlag KG Stuttgart · New York

The Occurrence of Repeated High Acceleration Ability (RHAA) in Elite Youth Football

Fabio R. Serpiello
1   Institute for Health and Sport, Victoria University, Melbourne, Australia
,
Grant M. Duthie
1   Institute for Health and Sport, Victoria University, Melbourne, Australia
2   School of Exercise Science, Australian Catholic University, Strathfield, Australia
,
Codey Moran
1   Institute for Health and Sport, Victoria University, Melbourne, Australia
,
Damian Kovacevic
1   Institute for Health and Sport, Victoria University, Melbourne, Australia
,
Erch Selimi
1   Institute for Health and Sport, Victoria University, Melbourne, Australia
,
Matthew C. Varley
1   Institute for Health and Sport, Victoria University, Melbourne, Australia
› Author Affiliations
Further Information

Publication History



accepted 04 April 2018

Publication Date:
05 June 2018 (online)

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Abstract

The aim of the present study was to investigate the occurrence of Repeated High-Acceleration Ability (RHAA) bouts in elite youth football games using 10-Hz GPS devices and two relative thresholds derived from players’ actual maximal acceleration. Thirty-six outfield soccer players (age 14.9±0.6 years) participated in the study. Players wore 10-Hz GPS units during 41 official games. High accelerations were defined as efforts commencing above a threshold corresponding to 70% (T70%) or 80% (T80%) of the average 5-m acceleration obtained during a 40-m sprint test; RHAA bouts were defined as ≥3 efforts with ≤45 s recovery between efforts. Results were analysed via generalised linear mixed model and magnitude-based inferential statistics. On average, 8.0±4.6 and 5.1±3.5 bouts were detected in an entire game using T70% and T80%, respectively. When all positions were analysed together, there was a very-likely small difference in the number of RHAA bouts between first and second half for T70% and T80%, respectively. RHAA bouts occur frequently in elite youth football, with small differences between halves and between playing positions within the first or second half in most variables assessed.

Keywords

acceleration - youth football - match analysis - high-intensity efforts - sprint
 

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