Comparative Effects of High-Intensity Interval Training and Continuous Endurance Training Among Prediabetic Patients

July 17, 2026 updated by: Riphah International University

Comparative Effects of High-Intensity Interval Training and Continuous Endurance Training on Glycemic Control, BMI, Vo₂ Max, Pulmonary Function, and Physical Activity Among Prediabetic Patients

Prediabetics is a condition where blood sugar levels are normal but not yet high enough to be diagnosed as type 2 diabetes. This phase offers a crucial point for timely intervention to delay or prevent type 2 diabetes. The objective of the study will be to find the effects of high intensity interval and continuous endurance training on glycemic control, BMI, Vo2 Max, pulmonary function and physical activity among prediabetic patients. Study design will be randomized control trial. Total 80 participants will be enrolled in study. The data will be collected from faculty of Riphah International University, Lahore. The study will be completed within 8 months after approval of synopsis. A simple random sampling will be used to assign the groups; group A and group B. Group A will be assigned high intensity interval training and group B will be assigned to continuous training.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Prediabetics is a condition where blood sugar levels are normal but not yet high enough to be diagnosed as type 2 diabetes. This phase offers a crucial point for timely intervention to delay or prevent type 2 diabetes. The objective of the study will be to find the effects of high intensity interval and continuous endurance training on glycemic control, BMI, Vo2 Max, pulmonary function and physical activity among prediabetic patients. Study design will be randomized control trial. Total 80 participants will be enrolled in study. The data will be collected from faculty of Riphah International University, Lahore. The study will be completed within 8 months after approval of synopsis. A simple random sampling will be used to assign the groups: group A and group B. Group A will be assigned high intensity interval training, and group B will be assigned to continuous training. Both interventions will be conducted over a 12-week period, with pre- and post-intervention assessments. Each exercise session constitutes a 5-minute warm up and finished with a 5-minute cool-down. Participants aged between 35 to 54 years with sedentary lifestyle, Stable medical condition, and stable body weight with changes less 3kg in the past 6 months will be included in this study. The study will exclude individuals with uncontrolled hypertension, history of heart disease, myocardial infarction and stroke and diagnosed type 2 diabetes, use of specific medications, severe obesity, high fasting blood glucose, previous history of respiratory problems, and smoking. Primary outcomes include changes in fasting blood glucose, HbA1c levels, and insulin sensitivity. Pre and post values of glucose level and FEV1, FVC and FEV1/FVC will be calculated. Secondary outcomes will assess BMI, VO₂ max through graded exercise testing, pulmonary function using spirometry, and physical activity levels measured by validated questionnaire of short form of IPAQ-SF. Data will be analysed using SPSS 24 and Shapiro wilks test will be applied to assess the normality of data. After assesing the normality of data paired sample/independent t test/ANOVA test will be applied to find which technique will be more beneficial for prediabetic patients.

Study Type

Interventional

Enrollment (Estimated)

80

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • Pakistan
    • Punjab Province
      • Lahore, Punjab Province, Pakistan, 40100
        • Recruiting
        • Rihpah international university Lahore campus
        • Contact:
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Sedentary lifestyle (Individuals reporting minimal structured physical activity e.g., <30 minutes of exercise per week) .

    • Stable Medical Condition (No history of significant cardiovascular events, uncontrolled hypertension, or other major comorbidities).
    • Stable Body Weight (Stable body weight with changes less than 3 kg in the past 6 months).

Exclusion Criteria:

  • uncontrolled hypertension

    • history of heart disease
    • myocardial infarction
    • stroke
    • Use of Specific Medications (Current use of insulin or other medications affecting glucose metabolism or exercise response)
    • Severe Obesity (Individuals with a BMI ≥ 40 kg/m)
    • High fasting blood glucose (Fasting blood glucose of >100mg.dl-1)
    • Previous history of respiratory problems
    • Smoking

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: High-Intensity Interval Training
High intensity interval training is a training method that involves repeated bouts of short duration, highintensity exercise typicallyb performed at ≥ 85 -95% of maximal heart rate or vo2 max interspersed with period of low intensity recovery or complete rest.
Behavioral: High-Intensity Interval Training

5 minutes warm up including walk

  • 30s fast stairs climbing
  • 60s slow walk down
  • Repeat 5 to 6 rounds
  • 5 minute stretching or slow walk (cool down)
Active Comparator: Continuous Endurance Training
Continuous endurance training also called moderate intensity continuous training involves sustained exercise at a moderate and steady intensity typically 60to 75% of vo2 max or maximal heart rate performed for a continuous duration without rest intervals
Behavioral: Continuous Endurance Training

5 to 10 minute walking (warm up )

  • 25 to 30minutes at 60 to 70 %continuous training
  • Continuous walk for 15 to 20 minutes.
  • 5 to 10 minutes stretching (cool down)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
fasting blood glucose
Time Frame: 12 weeks
Participants were instructed to fast overnight for 8 to 12 hours. FBG was measured using an automated glucose analyzer
12 weeks
Forced Vital Capacity
Time Frame: 12 weeks
Spirometry using devices like a digital spirometry will be used. Forced Vital Capacity (FVC) will be measured in liters (L) using spirometry. FVC represents the maximum volume of air that can be forcefully exhaled after a maximal inspiration.
12 weeks
Forced Expiratory Volume in One Second
Time Frame: 12 weeks
Forced Expiratory Volume in One Second (FEV₁) will be measured in liters (L) using spirometry. FEV₁ represents the volume of air exhaled during the first second of a forced expiratory maneuver.
12 weeks
FEV₁/FVC ratio
Time Frame: 12 weeks
The FEV₁/FVC ratio will be expressed as a percentage (%) and calculated from spirometric measurements to assess the degree of airflow limitation.
12 weeks
HbA1c
Time Frame: 12 weeks
HbA1c was assesed through high performance liquid chromatography
12 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Body mass index (BMI)
Time Frame: 12 weeks
Participants weight was measured using a calibrated digital scale with minimal clothing and no shoes height was measured using a wall mounted stadiometer with participants standing upright
12 weeks
IPAQ (short form) questionnaire
Time Frame: 12 weeks

International physical activity questionnaire is applicable for survey among 18 to 65 years to Assess the level of physical activity along different countries. It is developed in 2 Versions; first is long version (27 items), and the second is the short version (7 items). We will use IPAQ short version which consists of job, transport, domestic, and leisure time physical activity domains.

Moderate and high-intensity walking and sitting time activities are addressed in this questionnaire
12 weeks
Maximal Oxygen Uptake (VO₂max)
Time Frame: 12 weeks
In this research VO2 Max will be measured through a submaximal 6 mint walk test
12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Riphah International University

Investigators

  • Principal Investigator: Arjumand Bano, MS, Riphah International University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 1, 2026

Primary Completion (Estimated)

August 1, 2026

Study Completion (Estimated)

August 1, 2026

Study Registration Dates

First Submitted

June 8, 2026

First Submitted That Met QC Criteria

July 17, 2026

First Posted (Actual)

July 20, 2026

Study Record Updates

Last Update Posted (Actual)

July 20, 2026

Last Update Submitted That Met QC Criteria

July 17, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • REC/RCR & AHS/25/0302

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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