Anxiety that turns into an over-generalized and repetitive form is called rumination. When the literature was reviewed, rumination was found to be associated with depression and anxiety, but its applicability to physical activity (PA) behaviors has been largely overlooked. Only a few studies have examined the relationship between rumination and PA behaviors. The study was designed with the aim of determining the Turkish cultural adaptation, validity and reliability of the "Physical Activity-Specific Rumination Scale for Children (PARS-C)" questionnaire developed for children in England in order to determine the intrinsic factors affecting participation in PA.

Rumination is the individual's persistent thinking about the negative mood, symptoms, possible causes and consequences; however, it is defined as not taking action to solve the problem. When the literature was reviewed, it was found that rumination in children was associated with depression and anxiety, but information about its applicability to PA behaviors is limited. Only a few studies have examined the relationship between rumination and PA behaviors. The importance of identifying the intrinsic barriers and facilitators that affect participation in FA in children is frequently emphasized. For this purpose, the "Physical Activity-Specific Rumination Scale for Children (PARS-C)" scale, which evaluates the relationship between FA and rumination, was developed for the first time in England. It has been reported that PARS-C is a useful tool to evaluate children's PA-specific rumination tendencies and to improve our understanding of the role of rumination in PA behavior, but its applicability to other cultures requires further research. The present study was designed with the aim of determining the Turkish cultural adaptation, validity and reliability of the "Physical Activity-Specific Rumination Scale for Children (PARS-C)" questionnaire. To evaluate the validity, The Physical Activity Questionnaire for Older Children (PAQ-C) and Motivation Scale For Participation In Physical Activity (MSPPA) will be applied. To evaluate reliability, the Turkish form of PARS-C will be applied again after 7 days. All forms will be sent to children in google forms format.

It is planned to include 500 children in this study. Factor analysis methods will be used in the analysis of the factor structure of the scale, correlation analyzes (Pearson and Spearman coefficients) will be used in the analysis of validity and test-retest reliability. Cronbach's alpha analysis will be used in the reliability analysis. The study will be the first to reveal the relationship between FA behavior and rumination in Turkish children. The results will contribute to the determination of FA barriers in Turkish children.

Inclusion Criteria:

• Volunteer
• Not having any diagnosed disease
• 8-14 ages
• Have reading and writing skills
• Studying in primary or secondary school level
• Residing in Turkey
• To have the cognitive skills to understand and answer the questions in the questionnaires

Exclusion Criteria:

• Having a vision or hearing problem
• Have a diagnosed chronic cardiac, neurological, or rheumatic disease

Healthy children aged 8-14 years at primary or secondary school level who meet the inclusion criteria will be included in our study.