Document is current

Article History

Received: 30 October 2018

Accepted: 2 April 2019

First Online: 17 April 2019

Ethics approval and consent to participate

: The study plan was approved by the Ethics Committee of the Tampere Region, under the auspices of University of Tampere, Human Sciences (, running number 6/2012). A written informed consent was obtained from all students to participate in the study. Consent for each part of the measurements (questionnaire; accelerometer and activity diary) was asked separately after fully informed in the cover letter about the ethical principles of voluntary participation, avoiding harm and privacy and data protection. In addition, one parent or guardian was to sign the student’s consent to indicate that they were aware of the study and child’s decision to participate in the measurements. Parents were also informed about the study via electronic communication system between school and home. In the parental part of the study, completing the questionnaire – after being fully informed about the procedure in the cover letter – indicated consent to participate in the study. Written informed consent was not obtained from the parents because the questionnaire did not include sensitive information or intervene physical integrity in a way that it would have been necessary.

: Not applicable.

: The authors declare that they have no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.