Small-sided games in football: The effect of caffeine intake on physiological parameters and some selected technical actions
Anahtar Kelimeler:
Caffeine- Small-Sided Games- Technical Actions.Özet
The aim of this study was to examine the effects of caffeine intake on physiological responses and technical performance during small-sided games in football players. The study was conducted with 30 amateur male football players. The small-sided games were played on a 52x38 meter pitch in teams of 5 players, consisting of 3 sets of 6 minutes each, with 5-minute rest intervals between sets. Participants were assigned to three experimental conditions: caffeine group (KAF60), placebo group (PL), and control group (CG). The KAF60 group received 6 mg/kg of caffeine mixed with water, administered 60 minutes before exercise. The placebo group received only water, while the control group was not given any fluid. Each player participated in all three conditions with a 3-day washout period between sessions. Heart rate (HR) was measured every 5 seconds using a Polar device. Blood lactate levels and ratings of perceived exertion (RPE) were assessed before, between, and after the sets using fingertip blood samples. Technical performance was analyzed through video recordings and Mathball match analysis software, including variables such as number of shots, successful and unsuccessful passes, total passes, dribbles, ball recoveries, duels, and ball possession time. The results showed that both HR and RPE were significantly higher in the KAF60 group. In terms of technical performance, successful and total pass numbers were significantly higher in the KAF60 and PL groups compared to CG. Additionally, the number of unsuccessful passes was lower in the KAF60 group, while the number of duels was higher in the control group. In conclusion, appropriate doses of caffeine intake may positively influence physiological responses and passing performance during small-sided games in football. However, individual differences such as habitual caffeine consumption and tolerance levels should be taken into consideration when implementing supplementation strategies.
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