CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 315 enrolled
Drug / intervention
Once-Weekly HIIT +2 morebehavioral
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04887454
NCT04887454N/ACompleted

Optimal Frequency of High-Intensity Interval Training for Centrally Obese Adults

The University of Hong Kong·interventional·Posted May 14, 2021·Updated Mar 30, 2025

In Brief

A clinical study evaluating Once-Weekly HIIT, Thrice-Weekly HIIT, and 1 other intervention for Obesity. Completed, enrolled 315 participants across 1 site.

Detailed Summary

The aim of this study is to examine the therapeutic effectiveness of two different exercise frequencies of high-intensity interval training (HIIT; once versus thrice weekly, with matched weekly exercise volume) on improving cardiometabolic risk factors in centrally obese adults.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsObesity
CountriesHong Kong
Collaborators--

Timeline

N/ACompletedFinished
20222023202420252026
First PostedMay 14, 2021
Enrollment StartSep 1, 2021
Primary CompletionSep 7, 2024
TodayJul 2, 2026
Enrollment to primary: 3.0 yearsPosted 5.1 years ago

Interventions

Once-Weekly HIITbehavioral

Participants in this group will receive a 16-week intervention of HIIT once weekly supervised by certified athletic coaches. Participants will perform four 4-minute intervals at 85%-95% peak heart rate with a 3-minute active recovery between each 4-minute interval. Participants will repeat the 25-minute HIIT bout three times with 30-60 minutes break in between each 25-minute HIIT bout. Health information provided to the usual care control group will be made available to the participants in the HIIT groups.

Thrice-Weekly HIITbehavioral

Participants in this group will receive a 16-week intervention of HIIT thrice weekly supervised by certified athletic coaches. Participants will perform four 4-minute intervals at 85%-95% peak heart rate with a 3-minute active recovery between each 4-minute interval. Health information provided to the usual care control group will be made available to the participants in the HIIT groups.

Usual Careother

Participants in the usual care control group will receive health education delivered by research personnel. This program will consist of eight two-hour bi-weekly sessions covering major health issues relating to obesity including causes, prevalence, epidemiology, associated diseases, healthy diet, caloric restriction advice, physical activity, stress management, adequate sleep, as well as lifestyle counseling/consultation and goal-setting/record-keeping strategies for behavioral changes.