Funding for this research was provided by:
National Funds through FCT - Portuguese Foundation for Science and Technology ((UID/DTP/04045/2013))
European Fund for regional development (FEDER) allocated by European Union through the COMPETE 2020 Programme ((POCI-01-0145-FEDER-006969))
Project NanoSTIMA: Macro-to-Nano Human Sensing, Towards Integrated Multimodal Health Monitoring and Analytics ((NORTE-01-0145-FEDER-000016))
Received: 7 October 2018
Accepted: 24 April 2019
First Online: 17 May 2019
Ethics approval and consent to participate
: The data collection was approved by the school principal and a written informed consent was obtained from the students parents. The Research Center in Sports Sciences, Health Sciences and Human Development of the University of Beira Interior Review Board approved study procedures, in accordance with the declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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