This study investigates the effects of different volumes of high-intensity interval training on risk factors for metabolic syndrome in overweight young women.

The sedentary and inactive female overweight subjects, aged 18 to 30 years, were randomly divided into three groups: high volume high-intensity interval training group (4HIIT group), low volume high-intensity interval training group (1HIIT group) and control group (CON group). Human morphological measures, blood pressure, insulin resistance, blood analysis, and cardiorespiratory fitness were measured at baseline and after exercise intervention.

Inclusion Criteria:

• Women aged 18-30 years;
• BMI≥24kg/m2, indicating overweight and high risk of metabolic syndrome;
• Maintaining a stable body weight for the three months prior to the study.

Exclusion Criteria:

• Regular participation in physical exercise (≥3 times/week, exercise time≥30min/time);
• Any respiratory, musculoskeletal, or cardiovascular diseases;
• Medical or other contraindications for exercise;
• Taking medications that affect metabolism;
• Smoking and/or drinking habits.