4. Discussion
high-protein meal
This study investigated whether 10-g and 15-g milk protein drinks, respectively, have acute effects on a wide range of cognitive functions in healthy young adults. There were two main findings. First, shifting performance measured by the plus-minus task improved at 15 min after the intake of both the 10-g and 15-g milk protein drinks compared to the 0-g milk protein drink; in addition, we found that the acute effect of the 15-g milk protein drink lasted for 60 min, but the 10-g milk drink did not. Second, updating performance improved at 60 min after intake of the 10-g and 15-g milk protein drinks compared to intake of the 0-g milk protein drink. Our findings suggest that milk protein intake rapidly improves cognition performance in young adults.We found acute beneficial effects of both 10-g and 15-g milk protein on shifting performance at 15 min after intake. These findings are consistent with those of previous studies with a larger sample cohort and long-term intervention studies. For example, cohort studies demonstrated that dietary protein intake was associated with better shifting performance in older adults [In addition, we found that updating performance was improved at 60 min after intake of the 10-g and 15-g milk protein drinks. This result is consistent with previous evidence. For example, a previous study demonstrated improved updating performance in young adults with higher fasting glucose levels after intake of the non-acidified milk protein drink [Moreover, we did not find any significant improvements in inhibition, processing speed, or working memory capacity after milk protein intake. These results are consistent with those of previous studies. For example, previous studies showed that milk protein intake did not have any significant acute benefits on the inhibition measured by the Stroop task [The current study did not investigate the mechanisms underlying the acute beneficial effects of acidified milk protein intake on cognitive function. Milk protein contains a high proportion of amino acids [This study has some limitations. First, we did not assess cognitive performance at further intervals beyond 60 min after milk protein intake. Thus, it is still unclear how long the benefits of the milk protein drink will last. A previous study showed the acute benefit of milk protein 120 min and 240 min after consumption of a high-protein meal [