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Additional Information

Competing Interests

Aki Härmä and Koen de Groot are employees of Philips Research, Eindhoven, The Netherlands.

Author Contributions

Aki Härmä 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.

Koen de Groot conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, 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 Internal Committee on Biomedical Experiments (ICBE) of Philips has approved the collection of the data used in this paper (ref. 2014-0080 Circularity of a path geometry)

Data Deposition

The following information was supplied regarding data availability:

The complete raw cycling data is available supplied as a supplementary file: https://figshare.com/s/3baa3d23a97edd4f2be1

Funding

The authors received no funding for this work.


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