Journal
RESEARCH IN SPORTS MEDICINE
Volume 29, Issue 1, Pages 67-76Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15438627.2020.1743993
Keywords
Football; team sports; performance; training; GPS
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This study aimed to evaluate the impact of acceleration intensity on external and internal load during repeated sprint exercises, showing that different acceleration levels can affect training load parameters.
The aim of this study was to evaluate the effect of acceleration on the external and internal load during repeated sprint exercises (RSE). This study used a cross-over design. Sixteen soccer players were included (mean +/- SDs: age 21 +/- 1 years; weight 71.1 +/- 7.7 kg). RSE was 3 sets of 7 x 30 m sprints with 25 s and 3 min recovery between sprints and sets, respectively. RSE was performed using two protocols requiring either 10 m maximal acceleration (2.12 m(.)s(-2) [RSE-MA]) or 10 m submaximal acceleration (1.66 m(.)s(-2) [RSE-SA]). Global positioning systems (10 Hz; STATSports, Viper) were utilized to collect: high speed running (HSR), dynamic stress load (DSL), Heart Rate (HR) peak, time >85% HR peak, respiratory (RPEres) and muscular (RPEmus) rating of perceived exertion. RSE-MA induced higher load than RSE-SA in HSR (p = 0.037, ES = 0.20), DSL (p = 0.027, ES = 0.43), HR peak (p = 0.025, ES = 0.47), Time >85% HR peak (p = 0.028, ES = 1.11), RPEres (p = 0.001, ES = 1.10), and RPEmus (p = 0.001, ES = 0.73). This study shows that a different acceleration intensity in a RSE (MA vs. SA) impacts external and internal training load parameters.
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