THE EFFECTS OF CAFFEINE ON SPRINT AGILITY IN SQUASH PLAYERS
Cardiff Metropolitan University
MetadataShow full item record
This study investigated the short-term effects of caffeine on sprint agility in squash players. A review of literature revealed extensive research regarding the effects of caffeine on anaerobic performance, however, only two conflicting studies specifically addressed sprint agility (Lorino, Lloyd, Crixell & Walker, 2006; Duvnjak-Zaknich, Dawson, Wallman & Henry, 2011). As agility is fundamental to squash success (Wilkinson, Leedale-Brown & Winter, 2009), eight players were tested to examine caffeine’s effects on sprint agility. The participants completed four squash-specific change of direction speed (SCODS) tests (familiarisation, control, caffeine and placebo), with the placebo and caffeine trials completed in a counterbalanced, single blind order. Three attempts were recorded in each trial, with the fastest times analysed. A one-way ANOVA with repeated measures was performed on fastest split time (FTs), fastest total time (FTt), average heart rate (HRa) and peak heart rate (HRp) scores, while a 95% significance (P ≤ 0.05) was employed. Sprint time and heart rate response revealed no significant (P > 0.05) difference between the control, (FTs, 4.87 ± 0.57, FTt, 10.71 ± 0.98, HRa, 133.20 ± 13.37, HRp 169.75 ± 9.85), caffeine (FTs, 4.91 ± 0.60, FTt, 10.57 ± 1.24, HRa, 126.67 ± 15.11, HRp, 164.25 ± 14.05) and placebo trials (FTs, 4.91 ± 0.44, FTt, 10.47 ± 1.17, HRa, 127.51 ± 15.14, HRp, 167.13 ± 10.99). However, with the exception of HRa results, the standard deviations were greatest during the caffeine intervention, suggesting an individualised caffeine response. Also, a trial order effect was observed between the third and fourth test sessions, suggesting latent learning occurred. Therefore, future studies should limit these learning effects by increasing familiarisation attempts. Consequently, sportsmen and women who frequently perform repetitive, short sprints within their sports would be advised to use caffeine cautiously, as its effects on sprint agility remain largely unknown.
Showing items related by title, author, subject and abstract.
Glaister, Mark; Muniz-Pumares, Daniel; Patterson, Stephen D.; Foley, Paul; McInnes, Gillian (Taylor Francis, 2014)The aim of this study was to investigate the effects of caffeine supplementation on peak anaerobic power output (Wmax). Using a counterbalanced, randomised, double-blind, placebo-controlled design, 14 well-trained men ...
Hewlett, Paul; Smith, Alyson (John Wiley & Sons Ltd., 2006-03-01)Rationale The effects of caffeine on mood and performance are well established. One explanation of these effects is that caffeine removes negative effects induced by prior caffeine withdrawal. This was tested here by ...
Effects of Reapeated Doses of Caffeine on Performance and Alertness: New Data and Secondary Analyses Hewlett, Paul; Smith, Andrew (Wiley, 2007)Rationale The effects of caffeine on mood and performance are well established. Some authors suggest that caffeine merely reverses effects of caffeine withdrawal rather than having direct behavioural effects. It has also ...