"COMPARATIVE EFFECTS of REDUCED EXERTION HIGH INTENSITY TRAINING (REHIT) VERSUS HIGH INTENSITY INTERVAL TRAINING (HIIT) on ANTHROPOMETRIC MEASURES in OVERWEIGHT and OBESE ADULTS"

Obesity is a global health concern associated with an increased risk of cardio-metabolic diseases and reduced overall health. Exercise is a proven modality for managing obesity, with current focus of researches on identifying more time-efficient modes of exercise training. REHIT and HIIT have proven benefits but comparative effects of REHIT and HIIT in overweight and obese adults is yet to be determined. Hence the objective of this study is to compare the effects of reduced exertion high intensity training (REHIT) versus high intensity interval training (HIIT) on anthropometric measures (weight, waist circumference, hip circumference, waist-to-hip ratio), CUN-BAE adiposity index and cardiorespiratory fitness in overweight and obese adults.

Study Overview

• Status: Active, not recruiting
• Conditions: Overweight and Obesity
• Intervention / Treatment: Other: Reduced Exertion High Intensity Training (REHIT); Other: High Intensity Interval Training (HIIT)

Detailed Description

Obesity is a global health concern associated with an increased risk of cardio-metabolic diseases and reduced overall health. Exercise is a proven modality for managing obesity, with current focus of researches on identifying more time-efficient modes of exercise training. REHIT and HIIT have proven benefits but comparative effects of REHIT and HIIT in overweight and obese adults is yet to be determined.The significance of this study is to compare the effects of reduced exertion high intensity training (REHIT) versus high intensity interval training (HIIT) and will also investigate the effectiveness of REHIT as an alternative for overweight and obese individuals who perceive HIIT as too demanding. If found effective, it can also help in providing training protocol for optimizing cardiovascular health in this population, potentially leading to improved outcomes and reduced healthcare burdens. The results of this study will also add data to literature regarding the effects of REHIT and HIIT on anthropometric measures in overweight and obese. Main objective of this study is to compare the effects of reduced exertion high intensity training (REHIT) versus HIIT on anthropometric measures (weight, waist circumference, hip circumference, waist-to-hip ratio), CUN-BAE adiposity index and Cardiorespiratory fitness in overweight and obese individuals. The participants meeting the eligibility criteria will be recruited followed by random allocation to one of the 2 groups, following which they will be required to complete a self-reported demographic form and will be screened using Physical Activity Readiness Questionnaire (PAR-Q). Baseline evaluation will be done using tape measure for anthropometric, assessment of waist circumference and hip circumference, CUN-BAE index for adiposity and Queen's College step test for cardio-respiratory fitness. Experimental group A will perform REHIT while experimental group B will perform HIIT. Participants will also be provided with dietary restriction plan that will be followed during the training protocol. Exercise training would be performed for consecutive 6 weeks, 3 times a week on alternative days for total of 18 sessions.

• Study Type: Interventional
• Enrollment (Estimated): 42
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Pakistan
  • Punjab
    • Rawalpindi, Punjab, Pakistan, 46000
      • Foundation University College of Physical Therapy

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria

• Both male and female adults aged 18-45 years
• Overweight individuals with BMI ≥ 23kg/m²- 24.9kg/m²
• Obese individuals with BMI ≥ 25kg/m²
• Individuals falling in low PA category as per IPAQ Exclusion Criteria
• Individuals with any diagnosed cardiovascular, metabolic or pulmonary disease
• Current neurological or musculoskeletal conditions which limit participation in the study
• Any active infections
• Those with any contraindication to exercise testing or training.
• Currently following any dietary restriction plans for weight loss

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Reduced Exertion High intensity Training (REHIT) Group; Participant will perform a 5 min warm-up exercises then do cycling or treadmill running for 20 min at 40%-60% of HRR and then will conclude with 5 min cool down exercises. From week 2 to 6 participants will be instructed to perform training sessions on a cycle ergometer.A 3-minute cool-down period will conclude each session. Patients in this group will be provided with a caloric restriction plan by a nutritionist that will be followed throughout the training duration.	Other: Reduced Exertion High Intensity Training (REHIT); Participant will perform a 5 min warm-up exercises then do cycling or treadmill running for 20 min at 40%-60% of HRR and then will conclude with 5 min cool down exercises. From week 2 to 6 participants will be instructed to perform training sessions on a cycle ergometer. Each session will consist of a 3-minute warm-up period followed by two 20-second all-out sprints interspersed with 3 minutes of slow pedaling for recovery. Total of 18 sessions of REHIT will be performed thrice a week on alternate days by the participants for consecutive 6 weeks.
Experimental: High Intensity Interval Training (HIIT); Participant will perform a 5 min warm-up exercises then do cycling or treadmill running for 20 min at 40%-60% of HRR and then will conclude with 5 min cool down exercises. From week 2 to 6 participants will be instructed to perform a warm up of 5 min, then 4 bouts of 4 min of HIIT will be performed at 80%-95% of HRR separated by 3-min active recovery periods of moderate intensity cycling at 60%-70% of the HRR followed by 5 min cool down exercises. Patients in this group will be provided with a caloric restriction plan by a nutritionist that will be followed throughout the training duration.	Other: High Intensity Interval Training (HIIT); Patients in this group will be provided with a caloric restriction plan by a nutritionist that will be followed throughout the training duration. Week 1 will be baseline fitness level and familiarization week. Participant will perform a 5 min warm-up exercises then do cycling or treadmill running for 20 min at 40%-60% of HRR and then will conclude with 5 min cool down exercises. From week 2 to 6 participants will be instructed to perform a warm up of 5 min, then 4 bouts of 4 min of HIIT will be performed at 80%-95% of HRR separated by 3-min active recovery periods of moderate intensity cycling at 60%-70% of the HRR followed by 5 min cool down exercises. Pre and post session vitals will be noted. Total of 18 sessions of either HIIT will be performed thrice a week on alternate days by the participants for consecutive 6 weeks.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Waist circumference	Will be measured using a cloth tape measure. Waist circumference will be measured at the level of the smallest circumference above the umbilicus and below the xiphoid appendix.	6 weeks
Hip Circumference:	Measure at the widest point of the hips, with feet together	6 weeks
Waist-to-hip Ratio:	To determine the waist-to-hip ratio, divide the WC by the HC	6 weeks
Cardiorespiratory fitness	Cardiorespiratory Fitness will be assessed via Queens College step test.	6 weeks
Adiposity index	Evaluation will be done using CUN-BAE INDEX (Clínica Universidad de Navarra-Body Adiposity Estimator)	6 weeks

Collaborators and Investigators

• Sponsor: Foundation University Islamabad

Study record dates

Study Major Dates

• Study Start (Actual): June 10, 2024
• Primary Completion (Estimated): December 10, 2024
• Study Completion (Estimated): December 30, 2024

Study Registration Dates

• First Submitted: September 20, 2024
• First Submitted That Met QC Criteria: September 20, 2024
• First Posted (Actual): September 24, 2024

Study Record Updates

• Last Update Posted (Actual): September 24, 2024
• Last Update Submitted That Met QC Criteria: September 20, 2024
• Last Verified: August 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Overnutrition; Nutrition Disorders; Body Weight; Overweight
• Other Study ID Numbers: FUI/CTR/2024/26

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No