Abstract
The aim of this study was to investigate the relationship between aerobic endurance and linear speed on repeat sprint ability performance in female international footballers. Twenty-five female international football players completed 10-m, 20-m, 30-m linear speed, repeat sprint ability (RSA) and yo-yo intermittent recovery, level 1 tests. Pearson's product correlation (r) was used to assess the relationship between 10-m, 20-m and 30-m sprint times (S10-m, S20-m, S30-m) sprint time on the first trial of the repeated sprint test (RST1) and yo – yo intermittent recovery test, level 1 (YYIR1) with total repeated sprint time (RSTT). Linear regressions were used to describe the relationship between the dependent variable (RSTT) and independent variables (S10-m, S20-m, S30-m, RST1 and YYIR1). Pearson's correlation analysis indicated a large negative correlation between RSTT and YYIR1 performance (r = -0.58, P = .002), a very large significant relationship was established between S10-m and S20-m whilst an almost perfect relationship was present for S30-m and RST1. The results of the linear regression proved the independent variable RST1 explained 85% (adjusted R2) of the variation in RSTT scores. S10-m, S20-m and S30-m performance accounted for 62 – 83% of the variation in RSTT scores whilst YYIR1 performance only accounted for 33.6%. The results of this study indicate that fast linear speed can positively impact on RSTT performance whilst reduced aerobic endurance capabilities may negatively influence RSTT performance in female international footballers.
Highlights
Elite female international football is a dynamic intermittent field sport that physiologically stresses the metabolic and neuromuscular systems [1,2]
Pearson product correlation (r) analysis identified a large significant relationship existed between YYIR1 and repeated sprint time (RSTT) (r = -0.58, P = 0.002) whilst significant medium to large negative relationships were present with S10-m (r = - 0.42, P = 0.038), S20-m (r = - 0.52, P = 0.008), S30-m (r = - 0.50, P = 0.011), RST1 (r = - 0.58, P = 0.03) and YYIR1
This study is the first of its kind to investigate the relationship between aerobic endurance (YYIR1) and linear speed (S10-m, S20-m and S30-m) on repeat sprint ability (RSA) (RSTT and RST1) performance in female international footballers
Summary
Elite female international football is a dynamic intermittent field sport that physiologically stresses the metabolic and neuromuscular systems [1,2]. Repeated high speed actions consisting of two or more sprints with less than 20 seconds recovery between efforts occur approximately 31 – 33 times during international match play [6,8]. The most frequent mean recovery time duration between repeated high speed running bouts in female international matches has been demonstrated to be 10 seconds or less [6]. Such repeated high speed and sprint efforts with minimal recovery time can result in a deterioration of high speed running, sprint and RSA performance, throughout international match-play [5,8,9,14]
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