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Dear authors,
congratulations!
You have made the revisions requested by the reviewers and the manuscript is much improved.
Dear authors,
Respond point by point and address the reviewers' comments. The manuscript needs a major revision.
[# PeerJ Staff Note: Please ensure that all review and editorial comments are addressed in a response letter and any edits or clarifications mentioned in the letter are also inserted into the revised manuscript where appropriate. #]
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Your methods needs more detail. I suggest that you to provide more justification for the following points:
- The target popultaion is young people, so is there parent’s consent form? Please specify this point and if there is not parent’s consent specify “why”.
- Please specify the instruments of data collection: are the paper or online questionnaire? How are administred this questionnaire (in class, at home)?
- Please specify the teachers and local staff role for this data collection.
- The schools can refuse partecipation to the study? Please specify.
- Please specify the sleep cutoff which you are adopted for the analysis.
-Please add more detail about the 2 urban area selected for the sample (for example population density, etc.)
• Your results are compelling, the data analysis should be improved in the following ways:
- we suggest to add the mean age for each school’s grade of the population enrolled;
- are there differences among the 2 urban area selected for the analysis?
- Are there information about socio economic status (SES)? This is an important determinant of outcome.
• I think it would be better to add some points about the limitation of the study; in particular:
- The young people completed the questionnaire so they respond about parental educational level; this procedure can introduce an information bias (or recall bias). I suggest to add this limitation in the discussion.
- If there are not information about SES, i suggest to add this limitation in the discussion of results.
Thank you for the opportunity to review this manuscript. This is an interesting study which has investigated the mediation effect of physical activity in the effect of parental support on life satisfaction. However, the manuscript has several shortcomings, in particular:
1) The introduction and context is not well referenced and relevant, considering the importance of the topic and the ample evidence
2) The tables are not clear in the description and difficult to understand
The survey through the administration of the questionnaires is not very clear and the methods described provide limited indications, especially related to physical activity
The methods described require further investigation with more detailed conclusions
The manuscript describes a research that deals with a topic of great interest but it is weak in its methodological structure.
The research shows gaps in background and sample recruitment. It could be better described how the champion was recruited.
The conclusions are also unconvincing. The perspectives and limitations of the research also need to be better described. The contribution to the existing literature should be specified.
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