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Additional Information

Competing Interests

Martin Daumer is an Academic Editor for Peerj. He is also the Director of the Sylvia Lawry Centre for MS Research and one of the two managing directors of Trium Analysis Online GmbH, the two institutions who developped the actibelt.

None of the other authors has possibly competing interests.

Author Contributions

Martin Daumer conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper.

Michael Trost performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Paul Subkowski performed the experiments, analyzed the data, prepared figures and/or tables, reviewed drafts of the paper.

Andreas Schneider performed the experiments, analyzed the data, reviewed drafts of the paper.

Damian Mrowca performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Rui Ding performed the experiments, analyzed the data, reviewed drafts of the paper.

Han Gao performed the experiments, analyzed the data, reviewed drafts of the paper.

Markus Walther performed the experiments, reviewed drafts of the paper.

Christian Lederer conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

The study performed at the B2RUN event and the video controlled measurements have been accepted by the local ethics committee (sessions 01/2014 resp. 06/2014). All participants gave their written informed consent.

Funding

This study was partially supported by the EU (FP7 Easy IMP). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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