The Effect of Acute Concurrent Exercise on Executive Function: An Event-Related Potential Study

Not Applicable

Completed

Brief Summary: Executive function is a high-level cognition which plays an important role in our life. Meta-analysis study has demonstrated that acute exercise could improve executive function. However, it is still unclear whether executive function can be enhanced by the concurrent exercise that combines aerobic and resistance exercise. Moreover, previous studies indicated that acute exercise could increase the concentration of blood lactate which is positive correlated to executive function. It is still unclear whether the effect of acute concurrent exercise on executive function is mediated by blood lactate. Therefore, the purposes of present study are: (1) Measuring the effect of acute concurrent exercise and aerobic exercise on executive function. (2) Measuring whether the effect of acute concurrent exercise on executive function is mediated by blood lactate.

Detailed Description: Executive function is a high-level cognition which plays an important role in academic performance, career, and interpersonal relationship. Meta-analysis study has demonstrated that acute exercise could improve executive function, and also observed similar positive effect through both aerobic and resistance exercise. However, it is still unclear whether executive function can be enhanced by the concurrent exercise that combines aerobic and resistance exercise. Moreover, previous studies indicated that acute exercise could increase the concentration of blood lactate which is positive correlated to executive function. It is still unclear whether the effect of acute concurrent exercise on executive function is mediated by blood lactate. Therefore, the purposes of present study are: (1) Measuring the effect of acute concurrent exercise and aerobic exercise on executive function. (2) Measuring whether the effect of acute concurrent exercise on executive function is mediated by blood lactate.

Recruitment & Eligibility

Inclusion Criteria

Exclusion Criteria

Arm && Interventions

Group	Intervention	Description
concurrent exercise group, CE	concurrent exercise	Participants conduct 5-min warm up, 12-min aerobic exercise, 13-min resistance exercise, and 5-min cool down.
aerobic exercise group, AE	aerobic exercise	Participants conduct 5-min warm up, 25-min aerobic exercise, and 5-min cool down.

Primary Outcome Measures

Name	Time	Method
Task Switch Test Response Times	30 minutes	The shifting aspect of executive function was assessed using a computerised task-switching test. Each participant (N=78) completed 384 trials across six blocks (64 trials per block). The test consisted of two types of cognitive tasks: (1) number magnitude judgment (greater/less than 5) for digits 1-9 presented in solid-line squares, and (2) odd/even judgment for numbers presented in dotted-line squares. Performance was analysed by calculating each participant's mean response time (milliseconds) under four conditions: Homogeneous condition: Blocks where participants performed the same task repeatedly (Blocks 1 \& 2, e.g., AAAA or BBBB) Heterogeneous condition: Blocks where tasks were mixed (Blocks 3-6, e.g., AABBAA) Non-switch trials: Consecutive trials of the same task type within heterogeneous blocks (e.g., AA or BB) Switch trials: Trials where the task changed from the previous trial within heterogeneous blocks (e.g., AB or BA) Lower response time represents better task perform

Secondary Outcome Measures