Jafari Negar, Salesi Mohsen, Soltani Pooya, Fazeli Davoud
Department of Sport Sciences, College of Education and Psychology, Shiraz University, Shiraz, Iran.
School of Digital, Technologies and Arts, Staffordshire University, Stoke-on-Trent, United Kingdom.
Behav Brain Res. 2023 Oct 27:114732. doi: 10.1016/j.bbr.2023.114732.
Caffeine has been shown to benefit physical aspects of different sports. In this paper, we aimed to understand the effects of caffeine on decision-making and the accuracy of soccer passes. Twelve young soccer players (16-17 years old and 20.8±2.7kg/m BMI) completed the tasks once after taking 3mg/kg body mass of caffeine (CAF) and once after consuming similar amounts of placebo (PLA). For the decision-making task, participants were asked to determine the best outcome of ten simulated pre-recorded soccer events. For the soccer pass accuracy, participants performed five short- (10m) and five long passes (30m), as well as the Loughborough Soccer Passing Test. Although not statistically significant, participants were 1.67% more accurate in short- and 13.48% more accurate in long passes when they consumed caffeine compared to the placebo (14.67±2.74 vs. 14.50±2.97, p=0.34, g=0.27 and 7.50±2.84 vs. 6.83±3.13, p=0.60, g=0.14, respectively). However, participants' decision-making was 7.14% and LSPT scores were 3.49% lower when they consumed caffeine compared to the placebo (29.50±3.09 vs. 30.67±2.93, p=0.28, g=-0.30 and 55.38±11.91 vs. 57.48±12.13, p=0.08, g=-0.51 respectively). In conclusion, while the short pass accuracy remained consistent among almost all participants before and after caffeine consumption, the performance varied in the case of long passes. Moreover, most of the participants scored lower on decision-making and LSPT after consuming caffeine. This may suggest that more complex tasks with a higher number of passes might negatively be affected by low doses of caffeine ingested one hour before playing soccer. Future studies are required to elucidate the effects of caffeine consumption on distinct cognitive and passing tasks.
咖啡因已被证明对不同运动的身体方面有益。在本文中，我们旨在了解咖啡因对决策和足球传球准确性的影响。12名年轻足球运动员（16 - 17岁，体重指数为20.8±2.7kg/m）在摄入每千克体重3毫克咖啡因（CAF）后完成一次任务，在摄入等量安慰剂（PLA）后再完成一次任务。对于决策任务，参与者被要求确定十个模拟预录制足球事件的最佳结果。对于足球传球准确性，参与者进行了五次短传（10米）和五次长传（30米），以及拉夫堡足球传球测试。尽管无统计学意义，但与服用安慰剂相比，参与者在摄入咖啡因后短传准确性提高了1.67%，长传准确性提高了13.48%（分别为14.67±2.74对14.50±2.97，p = 0.34，g = 0.27；7.50±2.84对6.83±3.13，p = 0.60，g = 0.14）。然而，与服用安慰剂相比，参与者在摄入咖啡因后决策能力降低了7.14%，拉夫堡足球传球测试得分降低了3.49%（分别为29.50±3.09对30.67±2.93，p = 0.28，g = -0.30；55.38±11.91对57.48±12.13，p = 0.08，g = -0.51）。总之，虽然几乎所有参与者在摄入咖啡因前后短传准确性保持一致，但长传情况下表现有所不同。此外，大多数参与者在摄入咖啡因后决策和拉夫堡足球传球测试得分较低。这可能表明，在踢足球前一小时摄入低剂量咖啡因可能会对传球次数较多的更复杂任务产生负面影响。未来需要进一步研究以阐明摄入咖啡因对不同认知和传球任务的影响。
