This study investigates the effects of different interval training methods, specifically high-intensity interval training (HIIT) and sprint interval training (SIT), on vascular function in overweight female university students. A randomized controlled trial was conducted over an 8-week period.

This study aimed to evaluate how different types of interval training (HIIT and SIT) influence vascular function in overweight female university students. Participants were initially enrolled and randomly assigned to HIIT, SIT, or control groups. The participants in HIIT and SIT groups underwent an 8-week supervised exercise program 3 times per week on a treadmill. Both pre- and post-intervention measurements were taken, including vascular function, morphological indicators, and blood markers. This study highlights the potential of interval training as a time-efficient and effective intervention for improving cardiovascular health and body composition in this population.

Inclusion Criteria:

• Participants aged between 18 and 25 years, female.
• Participants' BMI more than 24 kg·m-2.
• Participants without regular exercise habits.

Exclusion Criteria:

• Participants underwent other interventions (e.g., nutrition, psychology, exercise, health education, et al).
• Participants had a history of systematic and professional exercise habit.
• Participants presenced of disease or condition restricting participation, such as injuries, respiratory disease or cardiovascular diseases.