Home-Based Circuit Training in Adults With Obesity (HBCT)

Chulalongkorn University

Status: Completed

Conditions: Obesity

Treatments: Behavioral: Home-Based Circuit Training

Study type: Interventional

Funder types: Other

Identifiers

NCT07619612

HBCT-OB-2026

Ratchadapisek Postdoctoral (Other Grant/Funding Number)

Details and patient eligibility

About

Obesity is associated with impaired vascular function, metabolic dysfunction, and reduced physical fitness, which increase cardiovascular disease risk. This randomized controlled trial aims to investigate the effects of a 12-week home-based circuit training program using light-to-moderate resistance on vascular health, body composition, metabolic function, resting metabolic rate, substrate oxidation, physical activity, and physical fitness in adults with obesity. Participants will be randomly assigned to either a home-based circuit training group or a control group maintaining usual daily activities. The findings may support the use of home-based exercise as a practical and time-efficient strategy for obesity management and cardiovascular risk reduction.

Full description

Obesity is a major public health concern associated with endothelial dysfunction, arterial stiffness, metabolic impairment, and reduced physical fitness. Although exercise training is recommended for obesity management, adherence to supervised exercise programs may be limited by time constraints and accessibility. Home-based circuit training may provide a feasible alternative that combines aerobic and resistance exercise within a time-efficient format.

This randomized controlled trial investigates the effects of a 12-week home-based circuit training intervention on vascular function, body composition, metabolic function, resting metabolic rate, substrate oxidation, physical activity, and physical fitness in adults with obesity.

Participants with obesity (BMI ≥ 27.5 kg/m²) will be randomly assigned to either a circuit training group or a control group. The intervention group will perform home-based circuit training using light-to-moderate resistance three times weekly for 12 weeks, while the control group will maintain usual activities.

Primary vascular outcomes include flow-mediated dilation, carotid intima-media thickness, brachial-ankle pulse wave velocity, and post-occlusive reactive hyperemia. Secondary outcomes include body composition, fasting plasma glucose, resting metabolic rate, substrate oxidation, physical activity, muscular strength, flexibility, and cardiorespiratory fitness.

The study aims to determine whether home-based circuit training can improve vascular and metabolic health and serve as a practical strategy for reducing cardiovascular risk in adults with obesity.

Enrollment: 29 patients

Sex: All

Ages: 19 to 45 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Adults with obesity according to the Asia-Pacific criteria (body mass index [BMI] ≥ 27.5 kg/m²).
• Able to participate in a home-based exercise program.
• Willing to provide written informed consent.

Exclusion criteria

• History of uncontrolled diabetes (HbA1c ≥ 10% or blood glucose ≥ 200 mg/dL).
• Uncontrolled hypertension (≥ 140/90 mmHg).
• Cardiovascular disease.
• Chronic obstructive pulmonary disease.
• Orthopedic conditions limiting exercise participation.
• Participation in regular exercise programs or sports activities within the previous 3 months

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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29 participants in 2 patient groups

Home-Based Circuit Training

Experimental group

Description:

Participants in this group will perform a 12-week home-based circuit training program three times per week. Each session includes warm-up, circuit exercise, and cool-down components designed to improve vascular and metabolic health.

Treatment:

Behavioral: Home-Based Circuit Training

Control Group

No Intervention group

Description:

participants in the control group will maintain their usual daily activities without participating in the exercise intervention during the study period.