Effects of Exercise Snacks and Sprint Interval Training in Overweight Adults

NCT ID: NCT06849453

Last Updated: 2025-02-27

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 45 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-02-24
• Study Completion Date: 2025-10-31

Brief Summary

Exploring the efficacy and acceptability of exercise snacks (ES) and sprint interval training (SIT) could provide time-efficient, low-barrier alternatives for individuals, especially those who, due to 'lack of time, environment, and equipment,' struggle to meet traditional physical activity recommendations. This research aims to investigate the effects of ES and SIT, of equal exercise volume, on overweight adults.

Detailed Description

Engaging in regular physical activity has been shown to induce a range of beneficial physiological and psychological adaptations, including improved cardiorespiratory fitness, body composition, cardiovascular function, and reductions in negative emotions. However, global participation rates in physical activity remain suboptimal, with little significant improvement. Interviews and surveys have identified several potential barriers to low physical activity levels, with limitations such as 'lack of time, equipment, and facilities' often cited as the main perceived obstacles. Therefore, exploring the minimum effective dose of exercise in real-world settings is essential.

This study will employ a randomized clinical trial to examine the effectiveness and acceptability of two low-volume, high-intensity stair climbing exercises in overweight adults. It adopts a single-blind, parallel randomized design, with the intervention commencing immediately after the initial evaluation and randomization, following a pre-treatment/post-test framework. Eligible participants were recruited via convenience sampling and randomly assigned to one of three groups (one control group and two experimental groups):

1. A control group that will not receive any treatment.

2. Two experimental groups (ES and SIT), which will undergo a stair climbing-based physical training program following the initial evaluation. The two exercise interventions are designed with equal exercise volume, with the only difference being the rest (recovery) time between stair sprints. All exercise sessions are conducted under the supervision of professionals.

The aim of this study is twofold: First, to explore the impact of ES and SIT on cardiorespiratory fitness, body composition, and cardiovascular function in overweight adults. Second, to examine the acceptability of two low-volume, high-intensity stair climbing exercises by assessing participants' (1) acceptability, (2) reactions during the interventions, (3) enjoyment and affective valence during exercise, and (4) intentions at the end.

Conditions

Cardiovascular Function; Cardiorespiratory Fitness

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: SINGLE

Study Groups

Exercise snacks group

Group Type: ACTIVE_COMPARATOR

Exercise snacks group

Intervention Type: BEHAVIORAL

Exercise snacks on the stairs for 8 weeks.

Sprint interval training group

Group Type: ACTIVE_COMPARATOR

Sprint interval training group

Intervention Type: BEHAVIORAL

Sprint interval training on the stairs for 8 weeks.

Control group

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

Exercise snacks group

Exercise snacks on the stairs for 8 weeks.

Intervention Type: BEHAVIORAL

Sprint interval training group

Sprint interval training on the stairs for 8 weeks.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Men and women aged between 18 and 35 years;
• Overweight but not obese (BMI ≥24 and ≤ 28 kg/m2);
• Physically inactive (3 or less bouts of purposeful exercise per week);
• Ability to understand the research details and voluntarily sign the informed consent form;
• Non-smoker (for >5 years);
• Body weight has been stable over the past six months, with no recent weight gain or loss behaviors;

Exclusion Criteria

• Any chronic illness, cardiac, pulmonary, liver, or kidney abnormalities, uncontrolled hypertension, peripheral arterial disease, insulin- or non-insulin dependent diabetes or other metabolic disorders - all ascertained through preliminary screening;
• Individuals with a history of bone, joint or neuromuscular problems or a current musculoskeletal injury ascertained through preliminary screening;
• Abnormal electrocardiogram (ECG) results;
• Currently taking medication that may affect physiological testing;
• Contraindications to exercise.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 35 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Beijing Sport University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

School of Sports Medicine and Rehabilitation, Beijing Sport University

Beijing, , China

Countries

China

Central Contacts

Peizhen Zhang

Role: CONTACT

zhpzh@bsu.edu.cn

01062989581

Other Identifiers

EESSITOA

Identifier Type: -

Identifier Source: org_study_id