HIIT Effects on Cardiometabolic Health

Detraining Effect of Short-term HIIT on Cardiometabolic Risk in Young Adults With Obesity

The primary aim of this randomized clinical trial is to compare the effects of three different HIIT protocols and a control group on cardiometabolic health in young adults with obesity. Participants will be randomly assigned to one of the following three groups, with each having varying work-to-rest ratios: 1) HIIT-A, 2) HIIT-B, 3) HIIT-C, and 4) control group. HIIT-A, HIIT-B, and HIIT-C groups will participate in six sessions of a running based HIIT program over a 2-week training period. Pre-clinical markers of cardiovascular disease, blood lipids and fasting glucose will be measured at the following three time points: baseline, post-intervention, and 2 weeks after the training cessation (i.e., measure for detraining effect). All measurements will be performed three days before the training program and three days after the intervention to avoid the effect of the last training session. Afterwards, the detraining test will be measured 2 weeks post intervention.

Study Overview

• Status: Recruiting
• Conditions: Cardiovascular Diseases; Obesity; Metabolic Disease; High-intensity Interval Training
• Intervention / Treatment: Other: high-intensity interval training intervention

Detailed Description

Introduction: High-intensity interval training (HIIT) compared with other traditional exercise regimens has shown to be effective in improving cardiometabolic health (as measured by lipids, blood pressure [BP], insulin sensitivity, pulse wave velocity) in overweight and obese adults. By knowing which HIIT protocol is more efficacious in improving markers of cardiometabolic disease, exercise physiologists, researchers and clinicians can properly prescribe exercise medicine to obese young adults and possibly prevent disease progression. Therefore, the primary aim of the present research is to compare the effects of 3 different HIIT protocols compared with a control group on cardiometabolic health improvement in young adults with obesity.

Participants: Participants will be randomly assigned to one of the following three groups : 1) HIIT-A (5:25 s; 1:5 ratio), 2) HIIT-B (10:50 s; 1:5 ratio), 3) HIIT-C (20:100 s; 1:5 ratio), and 4) control group. HIIT-A, HIIT-B, and HIIT-C groups will participate in six sessions of running-based HIIT programs over a 2-week training period. The variables will be measured at the following three time points: baseline, post-intervention, and 2 weeks after the TC (i.e., measure for detraining effect).

High-Intensity Interval Training (six sessions over 2 weeks): Heart rate will be recorded - while performing a sprint running based on the wood court. The HIIT intensity will be set at 90% of the fastest baseline with 40 repetitions of 5-seconds work time, 20 repetitions of 10-seconds work time, or 10 repetitions of 20-seconds work time. All participants will perform one bout of sprint running for 5-, 10-, or 20- seconds followed by 25-second, 50-second, or 100-seconds resting. The supervisor will verbally encourage the running to inspire the sprint at "all-out" intensity. Note that a total of 200-seconds workout time is required per session.

• Study Type: Interventional
• Enrollment (Anticipated): 60
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Myong Won Seo, Ph.D; Phone Number: 3154012723; Email: mseo04@syr.edu
• Study Contact Backup: Name: Wonhee Cho, MS; Phone Number: 6267270270; Email: mseo04@syr.edu

Study Locations

• United States
  • New York
    • Syracuse, New York, United States, 13244
      • Recruiting
      • Women's Building
      • Contact: Departments of Exercise Science; Phone Number: 315-443-2115

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Young adults with obesity (Age 18 to 25 years old, BMI ≥ 30 kg/m2).

Exclusion Criteria:

• Syndromic obesity; 1) Any clinical symptoms including cognitive delay, 2) abnormalities in body structure(s), 3) organ-specific abnormalities (kidney, liver failure, excessive eating, and/or other signs of hypothalamic dysfunction such as fatigue, weakness and/or lack of interest in activities.
• Taking weight loss medication(s)
• Currently enrolled (or within previous 6 months) in a weight loss program;
• An underlying disease/medications (steroids, second generation psychotropic agents, hormonal contraception, statins, antihypertensive and antidiabetic medications) that could influence carbohydrate or lipid metabolism.
• Presence of cardiac pacemaker.
• Current or anticipated participation in another research that would interfere with any of the outcomes.
• Current or anticipated pregnancy.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Control; Control group	Other: high-intensity interval training intervention; Intervention groups include 3 arms with 3 different HIIT protocols to identify optimal exercise regimen for improving cardiometabolic health in young adults with obesity.
Experimental: 5s HIIT; 5s HIIT group will perform one bout of sprint running for 5-seconds followed by 25-second, resting of total 40 repetition.	Other: high-intensity interval training intervention; Intervention groups include 3 arms with 3 different HIIT protocols to identify optimal exercise regimen for improving cardiometabolic health in young adults with obesity.
Experimental: 10s HIIT; 10s HIIT group will perform one bout of sprint running for 10-seconds followed by 50-second, resting of total 20 repetition.	Other: high-intensity interval training intervention; Intervention groups include 3 arms with 3 different HIIT protocols to identify optimal exercise regimen for improving cardiometabolic health in young adults with obesity.
Experimental: 20s HIIT; 20s HIIT group will perform one bout of sprint running for 20-seconds followed by 100-second, resting of total 10 repetition.	Other: high-intensity interval training intervention; Intervention groups include 3 arms with 3 different HIIT protocols to identify optimal exercise regimen for improving cardiometabolic health in young adults with obesity.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Height	Height (cm)	Baseline
Weight	Weight (kg); Change from Baseline weight at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Body mass index	Body mass index (kg/m2); Change from Baseline BMI at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Percentage body fat	Percentage body fat (kg); Change from Baseline percentage body fat at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Fat mass	Fat mass (kg); Change from Baseline fat mass at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Lean mass	Lean mass (kg); Change from Baseline lean mass at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Systolic blood pressure	Systolic blood pressure (SBP, mmHg); Change from Baseline SBP at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Diastolic blood pressure	Diastolic blood pressure (DBP, mmHg); Change from Baseline DBP at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Mean arterial pressure	Mean blood pressure (MAP, mmHg); Change from Baseline MAP at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Flow-mediated dilation	Flow-mediated dilation (FMD, mm); Change from Baseline FMD at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Carotid-femoral Pulse Wave Velocity (cPWV)	cPWV (m/s); Change from Baseline cPWV at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Total cholesterol	Total cholesterol (mg/dl); Change from Baseline TC at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
LDL-C	LDL-C (mg/dl); Change from Baseline LDL-C at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
HDL-C	HDL-C (mg/dl); Change from Baseline HDL-C at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Triglycerides	Triglycerides (TG, mg/dl); Change from Baseline TG at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)
Glucose	Glucose (mg/dl); Change from Baseline glucose at 2 week and 4 week	Baseline, post test (2 weeks of intervention), training cessation (2 weeks of detraining)

Collaborators and Investigators

• Sponsor: Syracuse University
• Investigators: Principal Investigator: Joon Young Kim, Ph.D, Syracuse University, Departments of Exercise Science

Study record dates

Study Major Dates

• Study Start (Actual): February 10, 2023
• Primary Completion (Anticipated): February 10, 2024
• Study Completion (Anticipated): December 10, 2024

Study Registration Dates

• First Submitted: February 13, 2023
• First Submitted That Met QC Criteria: April 19, 2023
• First Posted (Actual): May 3, 2023

Study Record Updates

• Last Update Posted (Actual): May 3, 2023
• Last Update Submitted That Met QC Criteria: April 19, 2023
• Last Verified: April 1, 2023

More Information

Terms related to this study

• Keywords: Obesity; Young adults; HIIT; Cardiometabolic disease; Detraining effects
• Additional Relevant MeSH Terms: Overnutrition; Nutrition Disorders; Overweight; Body Weight; Cardiovascular Diseases; Obesity; Metabolic Diseases
• Other Study ID Numbers: 22-010

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No