Effects of High-Intensity Interval Training on Executive Functions in College Students: Evidence from Different Doses

Area of Science:

• Exercise Physiology
• Cognitive Neuroscience
• Sports Science

Background:

• Executive functions (EF) are crucial cognitive processes.
• High-intensity interval training (HIIT) is a popular exercise modality.
• The impact of different HIIT doses on EF requires further investigation.

Purpose of the Study:

• To investigate the effects of low-dose and moderate-dose HIIT on the executive functions of college students.
• To compare the efficacy of different HIIT dosages on cognitive performance.

Main Methods:

• Randomized controlled trial with three groups: control, low-dose HIIT (1 session/week), and moderate-dose HIIT (2 sessions/week).
• Executive function assessments were conducted at baseline, 6 weeks, and 12 weeks.
• Measurements included tests of inhibition, cognitive flexibility, and working memory.

Main Results:

• No significant baseline differences in EF among groups.
• Both low-dose and moderate-dose HIIT improved EF at 6 weeks, with moderate-dose showing superior effects.
• Improvements were observed in inhibition, cognitive flexibility, and working memory.
• A downward trend in EF was noted for both HIIT groups at 12 weeks.

Conclusions:

• Both low-dose and moderate-dose HIIT enhance executive functions in college students.
• Moderate-dose HIIT demonstrates a more significant positive impact on EF compared to low-dose HIIT.
• Moderate-dose HIIT is recommended for improving executive functions in this population.