ISRCTN ISRCTN80588299
DOI https://doi.org/10.1186/ISRCTN80588299
Submission date
20/03/2024
Registration date
07/05/2024
Last edited
08/04/2024
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Circulatory System
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
Sleep disorders are common in patients with cardiovascular diseases. Poor sleep quality increases health risks such as hypertension, atrial fibrillation, metabolic syndrome and stroke. Cognitive-behavioural therapy is the first-line treatment for chronic insomnia, but it has accessibility and adherence challenges. Sleep medications have side effects. Studies have reported that Yoga asana and meditation improve sleep and reduce stress, diabetes onset and cardiovascular risks. Yoga Nidra is a yogic relaxation technique that provides deep psychological and physical relaxation. It has been shown to improve sleep quality and reduce stress and blood pressure. However, no studies have demonstrated the benefit of Yoga Nidra in patients with coronary artery disease and poor sleep quality. This study aims to determine the effect of Yoga Nidra in treating coronary artery disease patients with poor sleep quality.

Who can participate?
Patients with coronary artery disease of both sexes, aged between 30-80 years old

What does the study involve?
All the participants recruited for the study will be randomly allocated into two groups: the Intervention group (Yoga Nidra + Sleep Hygiene) and the Control group (Sleep Hygiene). Participants allocated to the Intervention group will be subjected to Yoga Nidra sessions for 3 months, in addition to sleep hygiene education and the standard guideline-recommended therapy. Participants in the control group will receive standard guideline-recommended therapy along with sleep hygiene education over 3 months. All the participants will be subjected to an assessment of sleep parameters using an actigraphy device (need to wear a wrist-watch like a device recording sleep duration and quality), Ambulatory blood pressure monitoring (a device to monitor Blood pressure), and echocardiography will be recorded at the baseline visit and after three months. Questionnaires assessing quality of life (SF-36 questionnaire), mental health (Beck's anxiety and depression scale), and stress(perceived stress scale) will be assessed

What are the possible benefits and risks of participating?
Practising the Yoga Nidra sessions will help the participants relax, reduce stress, and improve sleep. Participating in the trial has no risk, as the Yoga Nidra practice sessions are reportedly safe.

Where is the study run from?
Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
Centre for Integrative Medicine and Research, All India Institute of Medical Sciences, New Delhi, India.

When is the study starting, and how long is it expected to run for?
February 2021 to June 2024

Who is funding the study?
Investigator initiated and funded

Who is the main contact?
Dr. Gautam Sharma, drsharmagautam@aiims.edu

Contact information

Dr Praveen M
Principal Investigator

Department of Cardiology, All India Institute of Medical Sciences, New Delhi
New Delhi
110029
India

Phone +91-1126593322
Email prav.m@proton.me
Dr Gautam Sharma
Public, Scientific

Department of Cardiology, All India Institute of Medical Sciences, Centre for Integrative Medicine and Research
New Delhi
110029
India

ORCiD logoORCID ID 0000-0002-2223-5463
Phone +91-11-26549320
Email drsharmagautam@aiims.edu

Study information

Study designProspective randomized open-label outcome-assessor-blind single-centre study
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment, Efficacy
Participant information sheet Not available in web format
Scientific titleYoga in coronary artery disease and quality of sleep
Study acronymYOGA-CADETS
Study objectivesThe "Yoga Nidra" intervention will improve the quality of sleep in individuals diagnosed with coronary artery disease
Ethics approval(s)

Approved 03/05/2021, Institute Ethics committee for Post Graduate Research (All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, 110029, India; +9126594579; ethicscommittee@gmail.com), ref: IECPG- 254/24.03.2021, RT- 11/28.04.2021

Health condition(s) or problem(s) studiedICD-10 condition:125.1, Atherosclerotic heart disease of native coronary artery
InterventionEligible participants who give written consent for participation will be randomized into two arms, intervention and comparator groups, using a simple randomization method with an allocation ratio of 1:1. An independent statistician will generate the random allocation sequence. In addition to maintaining concealment, serial number-specific opaque sealed envelopes will be maintained by a person who is not a part of the study. The current study is a non-blinded trial; however, the outcome assessors will be blinded to the allocation of the subjects.

Intervention group: ‘Yoga Nidra’+ 'Sleep hygiene' sessions for three months
Comparator group: 'Sleep hygiene' sessions for three months

Intervention detail: Yoga Nidra is a simple method of relaxation practised in the flat lying position of ‘Shavasana’ (lying on the back, the arms and legs are spread at about 45 degrees) and following the instructions of the trained yoga therapist. The therapist guides the participants into progressively deeper states of relaxation and self-awareness. Participants are instructed to focus on each body part while breathing normally. Participants are asked not to sleep during the session and follow the instructions provided by the yoga instructor. The yoga classes for the patients consist of 30 to 35 minute /day sessions, five days a week. Total nine sessions [ three sessions (in-person guidance/contact session) and six sessions (supervised online session). Duration of Yoga Protocol: 30 - 35 minutes.

Sleep hygiene details: An experienced sleep expert will administer the Ten Commandments of Healthy Sleep in a personal interactive session (approximately ten minutes) at baseline.
Intervention typeBehavioural
Primary outcome measureSleep quality measured using an actigraphy at baseline and after 3 months
Secondary outcome measuresThe following secondary outcome measures will be assessed at baseline and after 3 months:
1. Total Sleep time (night), total sleep time (24 hours), sleep latency, and Sleep fragmentation index measured using an actigraphy
2. Daytime blood pressure (BP), 24-hour and mean BP reduction, and nocturnal dip in systolic BP measured using ambulatory blood pressure monitoring (ABPM)
3. Diastolic function measured using echocardiography
4. Improvement in quality of life measured using the Short-Form-36 questionnaire (SF 36)
5. Mental well-being measured using Beck's Depression Inventory
6. Reduction in salivary cortisol levels measured using electrochemiluminescence immunoassay (ECLIA)/ enzyme-linked immunosorbent assay(ELISA)/ liquid chromatography-mass spectrometry (LC-MS)
7. Change in angina class, antianginal medications, hospitalization or physician contact for worsening of symptoms measured using clinical interviews
Overall study start date01/02/2021
Completion date30/06/2024

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit30 Years
Upper age limit80 Years
SexBoth
Target number of participants160
Key inclusion criteria1. Patient with age group of 30 – 80 years old
2. Both sexes
3. Patient with coronary artery disease, either with Chronic coronary syndrome or after 4 months of Acute coronary syndrome.
4. Patients who are not planned for revascularization.
5. Patients who were revascularized at least 6 weeks back CCS Angina ≤ II.
Key exclusion criteria1. Patients who are regular practitioners of yoga.
2. Patients suffering from any neuro-psychiatric illness.
3. Patients who are unable to lie down still due to any medical condition.
4. Patients who are diagnosed case of Obstructive Sleep Apnea.
5. Patients with Left ventricular ejection fraction (LVEF) less than or equal to 30 %.
Date of first enrolment22/09/2021
Date of final enrolment30/03/2024

Locations

Countries of recruitment

  • India

Study participating centres

Department of Cardiology, All India Institute of Medical Sciences
Ansari Nagar
New Delhi
110029
India
Centre for Integrative Medicine and Research, All India Institute of Medical Sciences
Ansari Nagar
New Delhi
110029
India

Sponsor information

All India Institute of Medical Sciences
Hospital/treatment centre

Centre for Integrative Medicine and Research, 7th Floor, Convergence, AIIMS Campus, Ansari Nagar East
New Delhi
110029
India

Phone +91 011-26549325
Email cimrdelhi@aiims.edu
Website https://www.aiims.edu/index.php?lang=en
ROR logo "ROR" https://ror.org/02dwcqs71

Funders

Funder type

University/education

All-India Institute of Medical Sciences
Government organisation / Local government
Alternative name(s)
AIIMS
Location
India

Results and Publications

Intention to publish date01/12/2024
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request, Published as a supplement to the results publication
Publication and dissemination planPlanned publication in a high-impact and peer-reviewed journal
IPD sharing planThe dataset generated and/or analysed during the current study will be available upon request from Dr Gautam Sharma, drsharmagautam@aiims.edu.

The data generated during this study will be published as a supplement to the result publication after six months. Written consent forms will be obtained from each participant. Anonymized data will be a part of the published article.

Editorial Notes

20/03/2024: Study's existence confirmed by the Institute Ethics Committee for Post Graduate Research, All India Institute of Medical Sciences (AIIMS).