Examination of aerobic and anaerobic contributions to Yo-Yo intermittent recovery level 1 test performance in female adolescent soccer players




Dickau, Leanne

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The purpose of the study was to examine the physiological components related to the Yo-Yo intermittent recovery level 1 (YYIRL1) test in female adolescent soccer players. Eighteen female soccer players (age 16.3 ± .77 years) were tested for maximal oxygen uptake (VO2 max) and ventilatory threshold (VT) on a motorized treadmill. Anaerobic power and capacity were assessed by peak power (W) measured during a counter movement jump (CMJ) and performance on an anaerobic speed test (AST), respectively. As well, participants completed the Multistage 20m Shuttle run (Leger). YYIRL1 performance (meters) was significantly correlated to VO2 max (r = .59), VT (r = .42), Peak Power (r = .41), CMJ height (r = .41), AST (r = .52) and the Leger (r = .72, p < .05). Leger performance (m) was significantly correlated to VO2 max (r = .60) and AST (r = .47, p < .05). Multiple stepwise linear regression equations were run with YYIRL1 and Leger as the dependent variables. VO2 max was the only variable that contributed to prediction of YYIRL1 or Leger performance with R2 values of .35 and .36. The results of the study showed that YYIRL1 performance is related to both aerobic and anaerobic variables, although predominantly maximal aerobic power (VO2 max). It is recommended that the YYIRL1 be used when assessing female adolescent soccer players as the results provide evidence that the YYIRL1 is related to anaerobic variables associated with soccer match performance. As well, coaches can efficiently test their athletes in a shorter amount of time compared to the Leger.



soccer, female, Yo-Yo Intermittent Recovery Level 1 Test, aerobic fitness, anaerobic fitness, adolescent