Home » Trials » SLCTR/2018/002

Effectiveness of a yoga based intervention package on behavior problems among grade eight school children in Jaffna district, Sri Lanka.


SLCTR Registration Number


Date of Registration

23 Jan 2018

The date of last modification

Mar 03, 2019

Application Summary

Scientific Title of Trial

Effectiveness of a yoga based intervention package on behavior problems among grade eight school children in Jaffna district, Sri Lanka.

Public Title of Trial

Student behavior intervention study

Disease or Health Condition(s) Studied

Student behavior change with yoga based intervention

Scientific Acronym


Public Acronym


Brief title

The effectiveness of yoga based intervention on the behavior of grade 8 school children

Universal Trial Number

U 1111 - 1205 - 0415

Any other number(s) assigned to the trial and issuing authority

P/127/08/2017 (ERC: Kelaniya)

Trial Details

What is the research question being addressed?

Is yoga-based intervention effective in changing the behavior of grade 8 school children?

Type of study


Study design


Non-randomized controlled trial


Masking not used


Standard therapy/practice





Study Phase

Not Applicable

Intervention(s) planned

Study settings: Class 1AB, 1C, Class 11 Government schools in the Jaffna district, Sri Lanka.

This is a Quasi experimental study. Out of 5 education zones in Jaffna, 2 will be selected (non random) for trial and 2 will be selected as control zones. Within the zones selection of schools will be population proportion to size by random number allocation online software applied to the online list of schools by Northern education ministry. Trial is not randomised, but sample (schools) is randomly selected. Interventions:

  1. Breathing control exercises: Pranayama exercises using the techniques of deep breathing (7 steps) and alternate nostril breathing (11 steps)
  2. Sun salutation yoga exercises: Suryanamaskaram with 8 yoga postures (asanas) in 12 step cycles. A total of 3 cycles.
  3. Mindfulness meditation: guided mindfulness meditation in 22 steps

The intervention will be carried out in the first 15 minutes during the keep fit time from Monday to Thursday each week for 2 terms (24 weeks).

The intervention will be delivered by certified YOGA instructors for the first 2 weeks, and by student leaders under the supervision of the class teacher/physical education teacher for a total of 24 weeks.

Inclusion criteria

  1. Grade 8 Government school children in Jaffna district
  2. Should be able to read and write in the Tamil language

Exclusion criteria

  1. Diagnosed mentally subnormal children

Primary outcome(s)


Improvement in student behavior as determined by 1. Strength and difficulty questionnaire (SDQ) student form 2. SDQ teacher form 3. SDQ parent form


At baseline and 24 weeks after the commencement of the intervention.


Secondary outcome(s)


Improvement in school subject marks


At baseline and 24 weeks after the commencement of the intervention.


Target number/sample size

1500 (750 in each arm)

Countries of recruitment

Sri Lanka

Anticipated start date


Anticipated end date


Date of first enrollment

Date of study completion

Recruitment status


Funding source

None (Investigator funded)

Regulatory approvals

State of Ethics Review Approval



Date of Approval


Approval number


Details of Ethics Review Committee

Name: Ethics Review Committee, Faculty of Medicine, University of Kelaniya
Institutional Address:PO Box 6, Thalagolla Road, Ragama Sri Lanka
Email: erckelaniya@gmail.com

Contact & Sponsor Information

Contact person for Scientific Queries/Principal Investigator

Dr J.T. Sivashankar
Registrar, Community Medicine
Dept. Community Medicine, University of Jaffna under the Postgraduate Institute of Medicine University of Colombo, Sri Lanka
tel: 0212218178
Mob: 0771547590
Fax: 0212222073

Contact Person for Public Queries

Dr Rajendra Surenthirakumaran,
Consultant Community Physician and Senior Lecturer
Dept. Community and Family Medicine, University of Jaffna, Aadiyapatham Road Kokuvil, Jaffna Sri Lanka
Mob: 0777448080

Primary study sponsor/organization

Dept. Community and Family Medicine, University of Jaffna

Aadiyapatham Road Kokuvil, Jaffna Sri Lanka
Tel: 0212218178
Fax: 0212222073

Secondary study sponsor (If any)


Trial Completion details

Do the investigators plan to share identified individual clinical trial participant-level data (IPD)?

IPD sharing plan description

Not available

Study protocol available

Protocol version and date

Not Available

Protocol URL

Not Available

Results summary available


Date of posting results

Date of study completion

Final sample size

Date of first publication

Link to results

Brief summary of results