A cup of coffee can boost your motor performance: Enhanced motor sequence learning with caffeine
Kim, H.; Wright, D. L.; Kweon, J.; Brown, J. C.
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Caffeine is consumed in various beverages, such as coffee, energy drinks, soda, and tea. The effects of caffeine have been shown to manifest in various ways across different studies. Some studies suggest that caffeine can enhance motor performance. Despite this, numerous motor learning studies do not control for participants caffeine intake or do not record whether participants consumed caffeine. The purpose of this study was to compare the motor learning performance (i.e., online improvement) of individuals who consumed caffeine and those who did not before practice with a novel motor sequence task. Sixty-five right-handed healthy undergraduate students participated in this study. Individuals reported their caffeine consumption through a pre-experiment questionnaire prior to performing an eight-item serial reaction time task. The participants who consumed caffeine reported drinking one cup of coffee on average 158.8 minutes before performing the sequential task. The motor performance of individuals who consumed caffeine was compared to those who did not, with the caffeine-consuming group (n = 13) exhibiting faster response times during online learning than the non-caffeine group (n = 52). The findings of this study suggest that caffeine should be controlled for in future motor learning research.
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