The Effect of Laughter Yoga on Depression and Serotonin Levels in Patients Who Underwent Bariatric Surgery

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dc.contributor.authorKizilkaya, Gulnaz
dc.contributor.authorOzkan, Meral
dc.date.accessioned2026-04-04T13:33:13Z
dc.date.available2026-04-04T13:33:13Z
dc.date.issued2026
dc.departmentİnönü Üniversitesi
dc.description.abstractBackground: This study aimed to determine the effect of laughter yoga on depression and serotonin levels in patients who underwent bariatric surgery. Material Method: The research was conducted between December 2018 and April 2022 using a quasi-experimental design with a pretest-posttest control group. The study population consisted of 158 patients who underwent bariatric surgery in the General Surgery Department and were between 6 and 24 months postoperation. The sample size was determined using power analysis, resulting in a total of 62 participants. The laughter yoga group participated in 10 sessions. Depression and serotonin levels were measured both before and after the intervention in both the experimental and control groups. Data were analyzed using descriptive statistics (number, percentage, mean, standard deviation), chi-square test, paired samples t-test, and independent samples t-test. Results: In the laughter yoga group, posttest depression levels significantly decreased compared to pretest levels (p > 0.05). Posttest depression levels were also significantly lower in the laughter yoga group compared to the control group (p > 0.05). Although serotonin levels decreased in the laughter yoga group posttest compared to the control group, this difference was not statistically significant (p > 0.05). Conclusion: Laughter yoga was found to be effective in reducing depression in patients following bariatric surgery. While a decrease in serotonin levels was observed, it was not statistically significant.
dc.description.sponsorshipScientific Research Projects Unit of the University
dc.description.sponsorshipThis research was supported by the Scientific Research Projects Unit of the University where the study was conducted.
dc.identifier.doi10.1177/2168023X251366330
dc.identifier.endpage13
dc.identifier.issn2168-023X
dc.identifier.issn2168-0248
dc.identifier.issue1
dc.identifier.orcid0000-0003-3930-3490
dc.identifier.scopus2-s2.0-105013511447
dc.identifier.scopusqualityQ3
dc.identifier.startpage5
dc.identifier.urihttps://doi.org/10.1177/2168023X251366330
dc.identifier.urihttps://hdl.handle.net/11616/108994
dc.identifier.volume21
dc.identifier.wosWOS:001552782100001
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSage Publications Inc
dc.relation.ispartofBariatric Surgical Practice and Patient Care
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250329
dc.subjectbariatric surgery
dc.subjectdepression
dc.subjectlaughter yoga
dc.subjectnursing
dc.subjectserotonin
dc.titleThe Effect of Laughter Yoga on Depression and Serotonin Levels in Patients Who Underwent Bariatric Surgery
dc.typeArticle

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