Acute Effects of Moderate-Intensity Continuous Exercise Versus HIIT on Cognitive Performance and Psychophysiological Responses in Physically Active Adults

Enrolling by invitation · Not applicable

Conditions studied: Sustained Attention, Cognitive Performance, Cognitive Performance During Physical Activity

In brief

This study aims to compare the immediate effects of two common types of exercise-moderate-intensity continuous exercise and high-intensity interval training (HIIT)-on attention, alertness, and physiological responses in physically active young adults. Attention and mental alertness are essential for learning, academic performance, and daily functioning. Previous research suggests that a single session of exercise can temporarily improve cognitive performance, but it is not clear whether moderate exercise or high-intensity interval exercise is more effective in producing these immediate benefits. In this study, participants will complete two supervised treadmill exercise sessions on separate days: one session of moderate-intensity continuous exercise and one session of high-intensity interval training. The order of the two exercise sessions will be randomized, and there will be a rest period of 48 to 72 hours between sessions. Before and immediately after each exercise session, participants will complete computerized cognitive tests that measure sustained attention and reaction time. Heart rate, oxygen saturation, perceived exertion, mood, and alertness will also be measured to evaluate physiological and psychological responses to exercise. By comparing the effects of these two exercise approaches within the same individuals, this study aims to identify which type of exercise leads to better immediate cognitive performance and favorable physiological responses. The findings may help guide exercise recommendations for improving attention, alertness, and overall mental performance in young adults.

Key facts

Study ID

NCT07400432

Run by

Qassim University

People needed

38

Starts

2025-10-01

Expected to finish

2026-04-05

Last updated by the study team

2026-02-10

Who can join

Age: 18 and older, up to 30. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Aged between 18 and 30 years.
• Physically active individuals, as assessed by the International Physical Activity Questionnaire (IPAQ).
• In good general health.
• Cleared for physical activity participation based on the Physical Activity Readiness Questionnaire (PAR-Q).
• Enrolled as university students.
• Able and willing to provide written informed consent.

You may not qualify if…

• History of cardiovascular, neurological, or musculoskeletal disorders that may affect exercise safety or cognitive performance.
• Presence of uncontrolled hypertension, recent concussion, or any medical condition contraindicating exercise.
• Use of medications that may influence cognition, mood, or cardiovascular responses.
• Pregnancy.
• Failure to pass PAR-Q screening without medical clearance.
• Heavy smoking or history of substance abuse.
• Visual or hearing impairments that could interfere with computerized cognitive task performance.

Where it is running

• Qassim University — Buraidah, Al-Qassim Region, Saudi Arabia

Full record on ClinicalTrials.gov

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