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CTRI Number  CTRI/2025/09/094205 [Registered on: 03/09/2025] Trial Registered Prospectively
Last Modified On: 03/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Other (Specify) [Diet plan]  
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   How intermittent fasting comparing regular diet affects weight in healthy adults with obesity in chengalpattu district 
Scientific Title of Study   Effect of intermittent fasting vs regular diet on weight reduction and biomarkers in healthy adults with obesity in Chengalpattu district: A randomized controlled trial. 
Trial Acronym  IF 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  U Idayakshini 
Designation  Post graduate 2nd year  
Affiliation  SRM Medical College Hospital Research Centre 
Address  3rd floor D block Centre for Clinical Pharmacology SRM MCH RC KTR Campus Chengalpattu Dt. Tamil Nadu 603203.

Kancheepuram
TAMIL NADU
603203
India 
Phone  9081642447  
Fax    
Email  idyavishwakarma@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Melvin George  
Designation  Prof. Head, Centre for Clinical Pharmacology 
Affiliation  SRM Medical College Hospital Research Centre  
Address  3rd floor D block Centre for Clinical Pharmacology SRM MCH RC KTR Campus Chengalpattu Dt. Tamil Nadu 603203.

Kancheepuram
TAMIL NADU
603203
India 
Phone  9080281508  
Fax    
Email  melving@srmist.edu.in  
 
Details of Contact Person
Public Query
 
Name  Dr Melvin George  
Designation  Prof. Head, Centre for Clinical Pharmacology 
Affiliation  SRM Medical College Hospital Research Centre  
Address  3rd floor D block Centre for Clinical Pharmacology SRM MCH RC KTR Campus Chengalpattu Dt. Tamil Nadu 603203.

Kancheepuram
TAMIL NADU
603203
India 
Phone  9080281508  
Fax    
Email  melving@srmist.edu.in  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  U Idayakshini 
Address  3rd floor D block Centre for Clinical Pharmacology SRM MCH RC Kattankulathur campus chengalpattu Dt. 603001 Tamil Nadu India  
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Melvin George  Centre for Clinical Pharmacology Sri Ramaswamy Memorial Medical college Hospital and Research Centre  3rd floor D block Centre for Clinical Pharmacology SRM MCH RC KTR Campus Chengalpattu Dt., Tamil Nadu 603203.
Kancheepuram
TAMIL NADU 
9894133697

melving@srmist.edu.in  
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
SRM MEDICAL COLLEGE HOSPITAL - STUDENTS INSTITUTIONAL ETHICS COMMITTEE  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Obesity 
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Control group, regular diet  participants of this group will be following a regular diet without any given specific diet regimen to be followed. participants of this group will be acting as a control to intervention group. Control study duration will be one month or 30 days 
Intervention  Diet plan and diet guidance   intermittent fasting diet plan and guidance will be given to the participants randomized in intermittent fasting group. Intervention study duration will be one month or 30 days. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  45.00 Year(s)
Gender  Both 
Details  Individuals who are willing to participate and who are willing to provide consent to participate in the study.

b. Individuals of age 18 years to 45 years.

c. Either male or female.
d. Individuals with BMI above 25.

e. Individual should be in and around Chengalpattu region.
 
 
 
ExclusionCriteria 
Details 
Individual with cardiovascular diseases, metabolic disorders, diabetes mellitus, peptic ulcers, cognitive impairment, congenital anomalies, physically challenged, cancer, renal /liver impairment, pregnant and breastfeeding women or any eating disorders

b. Any Acute illness

c. HbA1c more than 6.5% .
d. Individual who underwent major surgical procedures in the last 3 months.

e. Individuals taking supplements or any other weight loss treatment such as ayurvedic, cryotherapy

f. Individuals who are engaged in gym activities, shift work, or heavy labor tasks.

g. Participation in another interventional trial.


 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
Change in weight loss from baseline to week 4 in healthy adults with obesity.
 
Change in weight loss from baseline to week 4 in healthy adults with obesity.
 
 
Secondary Outcome  
Outcome  TimePoints 
Change in quality of life, lipid profile, well-being, fatigue in healthy adults with obesity.
 
Change in difference in the levels of biomarker (hsCRP) from baseline to week 4 in healthy adults with obesity
 
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   15/09/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="0"
Months="1"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

Summary

 

Introduction

The proposed study will investigate intermittent fasting  IF specifically the 16 hours of fasting and 8 window period protocol as a non pharmacological intervention for obesity. In light of the growing global obesity epidemic particularly in India where approximately 25 percentage of the population is overweight or obese the study will explore the link between obesity and non communicable diseases NCDs such as diabetes cardiovascular disease and mental health disorders. The 16 hours of fasting and 8 window period protocol which restricts food intake to an 8 hour window is anticipated to improve fat metabolism enhance insulin sensitivity and reduce inflammation via mechanisms such as ketogenesis and autophagy. The study will build on existing evidence from previous research on various IF protocols including alternate-day fasting and 5 days of fasting and 2 days of add libitum feed which have demonstrated positive effects on weight management and biomarkers like triacylglycerol C reactive protein and leptin.

 

Methodology

The study will be conducted as a randomized controlled trial in Chengalpattu Tamil Nadu India and will recruit 40 participants aged 18 to 45 years with a BMI above 25. Participants will be screened using strict inclusion and exclusion criteria to minimize confounding factors such as preexisting metabolic disorders acute illness or involvement in other weight loss programs. The trial will follow an open label design and eligible participants will be randomized using block randomization with allocation concealment via SNOSE envelopes.

Participants will be randomly assigned into two groups

The intervention group will follow the 16 hours of fasting and 8 hours of window period intermittent fasting protocol.

The control group will continue with their usual diet.

Both groups will receive dietary counselling weekly telephonic follow-ups, and will be instructed to maintain diet diaries to assess compliance. Adherence will be supported through mobile health interventions with a minimum adherence threshold of 85 percentage set to ensure the validity of outcomes.

 

Prior to randomization all participants will undergo detailed baseline assessments which will include

 

Anthropometric measurements

 

Blood biomarker analysis including high sensitivity C reactive protein or hsCRP

 

Body composition analysis using the InBody770 device

 

Psychometric evaluations, including

 

Short form 36 for quality of life

 

WHO-5 for psychological wellbeing

 

Fatigue Assessment Scale

 

Global Physical Activity Questionnaire

 

Eating Disorder Examination Questionnaire

 

Blood samples will be collected after a 7 to 8 hour fast on Day 0 and Day 30 to assess fasting blood sugar lipid profile and hsCRP which is a recognized biomarker of systemic inflammation and cardiovascular risk.

These comprehensive baseline and endpoint measures will enable a multidimensional evaluation of the anticipated physiological and psychological impacts of intermittent fasting in the study population.

 

 
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