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CTRI Number  CTRI/2026/03/105603 [Registered on: 09/03/2026] Trial Registered Prospectively
Last Modified On: 08/03/2026
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Yoga & Naturopathy 
Study Design  Randomized, Crossover Trial 
Public Title of Study   Effects of Cooling pranayama on brain activity and State Relaxation 
Scientific Title of Study   Effects of Cooling pranayama on middle latency auditory evoked potential and State Relaxation 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Shirley Telles 
Designation  Consultant 
Affiliation  Patanjali Research Foundation (trust) 
Address  Department of Yoga Research, 2nd floor, Sadbhawana Building, Patanjali Research Foundation (Trust), Patanjali Yogpeeth Phase 1

Hardwar
UTTARANCHAL
249405
India 
Phone  09897963254  
Fax    
Email  office@prft.co.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr Shirley Telles 
Designation  Consultant 
Affiliation  Patanjali Research Foundation (trust) 
Address  Department of Yoga Research, 2nd floor, Sadbhawana Building, Patanjali Research Foundation (Trust), Patanjali Yogpeeth Phase 1

Hardwar
UTTARANCHAL
249405
India 
Phone  09897963254  
Fax    
Email  office@prft.co.in  
 
Details of Contact Person
Public Query
 
Name  Dr Shirley Telles 
Designation  Consultant 
Affiliation  Patanjali Research Foundation (trust) 
Address  Department of Yoga Research, 2nd floor, Sadbhawana Building, Patanjali Research Foundation (Trust), Patanjali Yogpeeth Phase 1

Hardwar
UTTARANCHAL
249405
India 
Phone  09897963254  
Fax    
Email  office@prft.co.in  
 
Source of Monetary or Material Support  
Patanjali Research Foundation (Trust) Department of Yoga Research, 2nd floor, Sadbhawana Building, Patanjali Research Foundation (Trust), Patanjali Yogpeeth Phase 1 
 
Primary Sponsor  
Name  Patanjali Research Foundation trust 
Address  Department of Yoga Research, 2nd floor, Sadbhawana Building, Patanjali Research Foundation (Trust), Patanjali Yogpeeth Phase 1 
Type of Sponsor  Research institution 
 
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 Shirley Telles  Patanjali Research Foundation (Trust)  Department of Yoga Research, 2nd floor, Sadbhawana Building, Patanjali Research Foundation (Trust), Patanjali Yogpeeth Phase 1
Hardwar
UTTARANCHAL 
09897963254

office@prft.co.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Patanjali Research Foundation Trust  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Based on semi structure Interview 
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Active Control  Breath Awareness (BAW) The total duration of the sessions will be 25 minutes below Time point: (i)Pre (5 min), (ii) During (15 minutes) intervention/control (iii) Post (5 minutes) Assessments include Mid latency auditory evoked potential, Visual Analog Scale (VAS) to assess the quality of the practice session, and the state relaxation Questionnaire. 
Comparator Agent  Control group  Quiet seated Rest (QR) The total duration of the sessions will be 25 minutes, below Time point: (i)Pre (5 min), (ii) During (15 minutes) intervention/control (iii) Post (5 minutes) Assessments include Mid latency auditory evoked potential, Visual Analog Scale (VAS) to assess the quality of the practice session, and the relaxation state Questionnaire. 
Intervention  Yoga intervention group  Sheetali Pranayama The total duration of the sessions will be 25 minutes, as detailed below Time pre (5 min), (ii) During (15 min) intervention/control session, and (iii) Post (5 min) Assessments include Mid latency auditory evoked potential (MLAEP), Visual Analoge (VAS) to assess the quality of the practice session, and the relaxation state  
Intervention  Yoga Intervention group  Sheetkari Pranayama The total duration of the sessions will be 25 minutes, as detailed below Time pre (5 min), (ii) During (15 min) intervention/control session, and (iii) Post (5 min) Assessments include Mid latency auditory evoked potential (MLAEP), Visual Analoge (VAS) to assess the quality of the practice session, and the relaxation state  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  35.00 Year(s)
Gender  Both 
Details  Participants with (i) normal health based on a semi structured interview, and (ii) Students having at least 3 months of experience in breathing techniques (pranayama) 
 
ExclusionCriteria 
Details  Those who will be taking medication and having history of smoking, consuming tobacco, alcohol, mental health disorders, extra systole, hypertension, respiratory conditions, disorders of hearing (based on self report and auditory threshold check) and cardiac conditions will be excluded from the study 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Centralized 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
Middle latency auditory evoked potential  The total duration of the intervention 28 minutes i.e., (i) Pre (5 Minutes), (ii) During 18 minutes with three epoches of 5 minutes one minute rest between two consecutive epoches) and iii) Post (5 minutes).  
 
Secondary Outcome  
Outcome  TimePoints 
Relaxation State Questionnaire (RSQ), and (b) Visual analogue scale (VAS)  (i) Relaxation State Questionnaire (RSQ) (Pre and post)
ii) Visual analogue scale (VAS) (Post) 
 
Target Sample Size   Total Sample Size="30"
Sample Size from India="30" 
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)   03/04/2026 
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="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
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   The objective of the present study is to determine the effect of cooling pranayama on cortical activity of the brain in healthy volunteers 
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