The Effect of Educational Video-Based Intervention on Nutrition and Physical Activity in High School Students on Healthy Lifestyle Behavors: A Randomized Controlled Trial

Objective: The aim of this randomized controlled trial is to determine the effect of using healthy lifestyle promoting films, documentaries and videos on HL behaviors in Health High School students. Material and Methods: The population of the study consists of 194 students who attended a Vocational and Technical Anatolian High School in the tenth, eleventh, twelfth grade. The intervention group of the study consists of 100 students and the control group consists of 94 students. Socio-demographic data form and Healthy Lifestyle Behavior Scale-II pre-test were applied to the intervention group before the videos, and post-test was applied 3 months later. In the control group, the same questionnaires were applied as a pre-test and after 3 months, post-test was applied without any videos being watched. Results: In the 11th grade intervention group, there was a significant difference between the pretest and posttest mean scores compared to the control group (p=0.003). In both genders, there was a significant difference between the mean scores of the scale in the nutrition and health responsibility subscales of the intervention group compared to the control group (p=0.001). The intervention group scored significantly higher than the Interpersonal relationship subscale of the scale compared to the control group (p=0.001). Conclusion: Videos were found to be more effective in the 11th grade. It was found that watching instructional videos was effective in developing healthy eating habits.