2.3. Participants

Participants were 58 healthy adolescents, aged between 11 and 17 years, and consisted of 29 males and 29 females studying from 6th class to 12th class. The mean age of the adolescents was 14.02 ± 2.15 years. They were included if they can comprehend English language, and if they were currently studying in various schools in Mangalore, India. They were excluded if they had any chronic medical or psychiatric problems, or if they were currently on psychotherapy, counseling, or treatment for any sleep problems and allergic disorders. The consent forms were distributed in the class and collected two days before the commencement of the study. The participants were selected through stratified random sampling method. The stratification was based on gender and grade levels of the adolescents.

Participants in the intervention group received the full SPP intervention, and the control group continued with their school curriculum, and their usual health and physical education. Figure 1 shows the progression of the participants in the flow diagram.

Progression of participants in the flow diagram.