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Laughter YogaPeer BullyingNCT07534566

Evaluation of the Effect of a PRECEDE-PROCEED Model-Based "Laughter Yoga-Supported Education Program" on Peer Bullying

A study testing Health education and Laughter Yoga in people with Laughter Yoga and Peer Bullying, run by Ankara University at 1 site in Turkey (Türkiye).

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Adolescence is a critical developmental period marked by rapid cognitive, emotional, and social changes that shape personality and psychosocial functioning. During this stage, peer relationships play a central role in adolescents' mental well-being, academic performance, and social adjustment. Read more about this study

Who is it for?
Ages 10 to 14 yearsHealthy volunteers can take part
Conditions the study is for
Laughter Yoga, Peer Bullying, Adolescents
What is being tested?
Health education and Laughter Yoga
Could I receive a placebo?
No, everyone receives an active treatment
How many people
80 participants
Where
1 siteTurkey (Türkiye)
Study dates
3 Feb 2026to 30 Mar 2026
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 10 to 14 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Voluntary participation of the student and parent/guardian
  • Being enrolled as an 8th-grade student
  • No hearing, visual, or cognitive impairment affecting participation in data collection

Who cannot join

  • Presence of any medical condition contraindicating physical activity
  • History of abdominal surgery within the past 3 months
  • Diagnosis of diabetes, glaucoma, hypertension, epilepsy, hernia, or asthma

Trial locations and contacts

1 site in 1 country.

Turkey (Türkiye)1 site
  • Ankara University. Nursing Fakulty

    Ankara, Mamak

Other trials in Turkey (Türkiye)

About this study

Adolescence is a critical developmental period marked by rapid cognitive, emotional, and social changes that shape personality and psychosocial functioning. During this stage, peer relationships play a central role in adolescents' mental well-being, academic performance, and social adjustment. However, unhealthy peer interactions and exposure to peer bullying significantly increase the risk of adverse physical, psychological, and social outcomes, including anxiety, depression, low self-esteem, academic difficulties, and risky health behaviors, making bullying a major public health concern.

Recent evidence indicates a rising prevalence of peer bullying, particularly among middle school students, highlighting the need for effective school-based interventions. Previous programs have demonstrated reductions in bullying behaviors and improvements in school adjustment and self-confidence, yet meta-analytic findings suggest that existing educational interventions have limited effectiveness, underscoring the need for innovative and theory-driven approaches.

Read more

The PRECEDE-PROCEED Model offers a comprehensive framework for designing sustainable health promotion interventions by addressing predisposing, enabling, and reinforcing factors influencing behavior. In this context, a laughter yoga-supported education program grounded in this model aims to increase adolescents' awareness of peer bullying, enhance physiological, psychological, and social well-being, strengthen social interaction, and improve quality of life. To date, no studies have examined the effects of a PRECEDE-PROCEED Model-based laughter yoga intervention on peer bullying. The aim of this study is to examine the effect of the "Laughter Yoga-Supported Education Program," developed based on the PRECEDE-PROCEED Model, on peer bullying among adolescents.

Objectives:

To improve adolescents' levels of awareness regarding peer bullying through the PRECEDE-PROCEED Model-based "Laughter Yoga-Supported Education Program," To enhance adolescents' awareness of health behaviors related to peer bullying through the PRECEDE-PROCEED Model-based "Laughter Yoga-Supported Education Program," To develop adolescents' social skills through PRECEDE-PROCEED Model-based laughter yoga educational practices, To significantly reduce the post-test mean peer bullying scores of adolescents in the intervention group compared with their pre-test mean scores, To ensure that the findings of the study contribute to the literature and guide future research on PRECEDE-PROCEED Model-based interventions.

Hypotheses:

H0-1: There is no significant difference in Peer Bullying Identification Scale scores between adolescents who receive the PRECEDE-PROCEED Model-based Laughter Yoga-Supported Education Program and those who do not.

H1-1: There is a significant difference in Peer Bullying Identification Scale scores between adolescents who receive the PRECEDE-PROCEED Model-based Laughter Yoga-Supported Education Program and those who do not.

Read the detailed description

This study is a randomized controlled trial designed to evaluate the effects of a PRECEDE-PROCEED Model-based laughter yoga-supported education program on peer bullying, empathy, and related knowledge among 8th-grade students in a middle school located in the Altındağ district of Ankara, Türkiye.

The study population consists of 8th-grade students enrolled in a randomly selected middle school in a socioeconomically disadvantaged district. Participants who meet the inclusion criteria and provide parental consent will be randomly assigned to intervention and control groups using a simple random allocation method to ensure equal probability of group assignment and minimize selection bias.

The intervention group will receive a 6-week structured program based on the PRECEDE-PROCEED Model, consisting of weekly theoretical education sessions (30-40 minutes) on peer bullying and health-related outcomes, and laughter yoga sessions (40-45 minutes) conducted twice per week by a certified instructor. Educational materials will also be shared with families to reinforce learning. The control group will receive no intervention during the study period.

Data will be collected at three time points: baseline (pre-test), immediately after the 6-week intervention (post-test), and 3-month follow-up. Outcome measures include peer bullying behaviors, peer bullying knowledge, and empathy and sympathy levels, assessed using validated measurement tools.

After completion of the study, a single-session educational intervention will be provided to the control group for ethical considerations.

Data will be analyzed using SPSS software. Descriptive statistics will be calculated, and group comparisons will be performed using independent samples t-test, ANOVA, and non-parametric equivalents where appropriate. Statistical significance will be set at p < 0.05.

Being tested
Health education, Laughter Yoga
Keywords
PRECEDE-PROCEED Model, Laughter Yoga, Peer bullying, Adolescents, Social skills
Medical subject headings
Health Education, Social Skills

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Health educationBehavioural

    Participants will receive face-to-face health education over 6 weeks,

  • Laughter YogaBehavioural

    The intervention groups will receive a total of 6 sessions of laughter yoga, delivered by the researcher over 6 weeks, once a week, each lasting 40-45 minutes.

Study groups in NCT07534566
Study groupRoleWhat they receive
Intervention Group 1 Health Education and Laughter YogaExperimentalParticipants will complete a pre-test,Each week, one day will be allocated to health education, during which students will receive 30-40 minutes of theoretical instruction and informational brochures will be distributed to families. On the other day, students will participate in a 40-45 minute laughter yoga session conducted by a researcher certified in laughter yoga.
Receives: Behavioral: Health education; Behavioral: Laughter Yoga
Arm 2: Control GroupNo interventionParticipants will undergo a pre-test with no additional intervention; post-tests will be conducted at the end of the study, and laughter yoga will be offered to volunteers.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Adolescent Empathy and Sympathy Scale

    This scale, developed by Vossen et al. (2015), was designed to assess levels of empathy and sympathy in adolescents, to distinguish between these two constructs, and to address cognitive and emotional empathy dimensions equally (Vossen et al., 2015). The Turkish adaptation, validity, and reliability study was conducted by Zengin et al. (2018).

    The scale is rated on a 5-point Likert type and consists of a total of 12 items across three subscales: cognitive empathy, emotional empathy, and sympathy. Each subscale includes four items; the first four items measure emotional empathy, the next four measure cognitive empathy, and the final four measure sympathy. Higher scores indicate higher levels of empathy or sympathy, while lower scores indicate lower levels.

    Cronbach's alpha reliability coefficients for the subscales were reported as 0.63 for cognitive empathy, 0.63 for emotional empathy, and 0.75 for the sympathy subscale (Zengin et al., 2018). P

    Measured: 1 month

  2. Peer Bullying Scale

    The Peer Bullying Scale was developed by Mynard and Joseph (2000). Its Turkish validity and reliability study was conducted by Gültekin and Sayıl (2005). The scale used in this study consists of five subdimensions and a total of 27 items. The subdimensions are defined as Intimidation/Threat, Teasing, Physical Aggression, Relational Aggression, and Attacks on Personal Property. The items are rated on a 3-point Likert scale as "more than once" (2 points), "once" (1 point), and "never" (0 points). The total score ranges from 0 to 54. The Cronbach's alpha coefficient for the overall scale is 0.86, and for the subscales, the values are 0.73, 0.68, 0.72, 0.72, and 0.67, respectively (Gültekin \& Sayıl, 2005). The scale identifies victims of bullying. Higher scores indicate more frequent experiences of peer bullying, whereas lower scores indicate fewer or no such experiences.

    Pekel and Uçanok (2005) adapted this scale by adding the question, "How often do you engage in t

    Measured: 1.5 months

  3. Peer Bullying Knowledge Form

    The form was developed by Yavuz and Özdemir in 2024. It was designed to assess middle school students' knowledge levels regarding peer bullying before and after the educational intervention. The form consists of eight items, each rated on a 3-point Likert scale ("I don't know = 0," "incorrect = 1," "correct = 2"). Total scores range from 0 to 16, with higher scores indicating increased knowledge about peer bullying. To evaluate content and language validity, expert opinions were obtained from six specialists and analyzed using the Content Validity Index (CVI) method. The calculated CVI value was 0.95. In addition, the reliability of the form was examined, and the Cronbach's alpha internal consistency coefficient was found to be 0.85 (Yavuz \& Çevik Özdemir, 2024). Permission to use the scale in this study was obtained from the corresponding author and is included in the appendix.

    Measured: 1.5

  4. Laughter Yoga-Supported Education Program Evaluation Questionnaire

    The questionnaire designed to evaluate the Laughter Yoga-Supported Education Program was developed by the researcher. This form consists of 15 items aimed at assessing participants' satisfaction with the program implemented during the study and identifying any problems encountered.

    Measured: 1.5 month

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Apr 2026
  2. Study start3 Feb 2026
  3. Primary completion13 Mar 2026
  4. Study completion30 Mar 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Sequential
Model description
The study was planned as a randomized controlled experimental design with a pretest-posttest.
Masking
Single blind
Who is masked
Participant
Enrolment
80 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07534566
Sponsor's protocol ID
21/266
Acronym
Peer Bullying
Status last verified
Dec 2025
First submitted
10 Apr 2026
Last updated
16 Jun 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Tamaddon M, Ozturk Eyimaya A, Tezel A. Effect of a PRECEDE-PROCEED model-based laughter yoga-supported education program on adolescent bullying: A randomized controlled trial. J Pediatr Nurs. 2026 Oct 23:S0882-5963(26)00519-1. doi: 10.1016/j.pedn.2026.10.012. Online ahead of print.

    PubMed 42919689

Questions about this trial

What is this clinical trial studying?

A study testing Health education and Laughter Yoga in people with Laughter Yoga and Peer Bullying, run by Ankara University at 1 site in Turkey (Türkiye).

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 16 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Adolescent Empathy and Sympathy Scale (time frame: 1 month). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07534566, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Jun 2026.

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