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Training load and submaximal heart rate testing throughout a competitive period in a top-level male football team |
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| Authors: | Vincenzo Rago Peter Krustrup Rafael Martín-Acero António Rebelo |
| Institution: | 1. Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto , Porto, Portugal;2. Portugal Football School, Portuguese Football Federation , Oeiras, Portugal ![ORCID Icon]({"type":"image","src":"/templates/jsp/images/orcid.png"} "ORCID Icon") https://orcid.org/0000-0002-9445-4008;3. Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, University of Southern Denmark , Odense, Denmark https://orcid.org/0000-0002-1461-9838;4. Department of Physical and Sports Education, University of A Coru?a , A Coru?a, Spain https://orcid.org/0000-0002-7117-8055;5. Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto , Porto, Portugal https://orcid.org/0000-0001-9105-7421 |
| Abstract: | ABSTRACT The aim of this study was to investigate training load and cardiorespiratory fitness in a top-level Spanish (LaLiga) football team (n = 17). The submaximal Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1SUB) was performed in four moments of the competitive period from early February (E1) to early May (E4). Training load was quantified using a 10-Hz global positioning system and heart rate (HR) recording (n = 837 individual training sessions), while match load was quantified using semi-automated cameras (n = 216 individual match observations). Cardiorespiratory fitness moderately improved as the season progressed (P < 0.05; effect sizes = 0.8 to 1.2). Cumulative total distance covered during training between E1 and E4 was negatively correlated with percentage of changes in mean HR during the last 30 s of Yo-Yo IR1SUB (P = 0.049; r = ?0.47 ?0.71; ?0.14]; moderate). HR during the last 30 s of Yo-Yo IR1SUB was negatively correlated to total distance covered during the match (P = 0.024; r = ?0.56 ?0.80; ?0.17]; moderate). Yo-Yo IRSUB can be used to monitor seasonal changes in cardiorespiratory fitness without the need to have players work until exhaustion. Cardiorespiratory fitness given by mean HR during the last 30 s of the test seems meaningful in relation to match performance. |
| Keywords: | Cardiorespiratory performance GPS distance covered internal load external load |