Acute 3.5-minute light-intensity exercise enhances executive function and psychological mood in children

Area of Science:

• Pediatric Health
• Cognitive Neuroscience
• Exercise Science

Background:

• Global increase in childhood physical inactivity and sedentary behavior poses risks to health and development.
• Effective, integrated exercise interventions are needed in school settings to support children's well-being.
• Executive function and mood are critical components of children's overall health and academic success.

Purpose of the Study:

• To investigate the impact of brief, light-intensity exercise on children's executive function and mood.
• To determine if a short exercise intervention can improve cognitive performance and emotional states in a school environment.
• To assess the feasibility of integrating simple exercise into daily classroom routines.

Main Methods:

• A crossover trial involving 31 children (aged 12.0 ± 1.1 years).
• Participants completed a control condition (15-min seated rest) and an exercise condition (3.5-min light-intensity exercise during rest).
• Executive function was assessed using the Color-word Stroop task (CWST), and mood was measured using the Two-Dimensional Mood Scale (TDMS).

Main Results:

• Significant improvements in incongruent reaction time (faster responses) and pleasure were observed after the exercise condition compared to the control.
• Arousal levels were maintained after exercise but declined in the control group.
• No significant associations were found between cognitive/emotional improvements and prefrontal cortex activation changes.

Conclusions:

• Brief, light-intensity exercise is a practical strategy for enhancing executive function and mood in children.
• This intervention can be readily implemented in school settings to support cognitive and emotional health.
• Further research could explore the neural mechanisms underlying these improvements and long-term effects.