About the Authors

Laura Hak

Affiliation Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, The Netherlands

Han Houdijk

Affiliations Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, The Netherlands, Heliomare Rehabilitation Centre, Wijk aan Zee, The Netherlands

Peter J. Beek

Affiliation Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, The Netherlands

Jaap H. van Dieën

j.van.dieen@vu.nl

Affiliation Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, The Netherlands

Competing Interests

The authors have the follwing interests: The contribution of Laura Hak is partly sponsored by Motek Medical (www.motekmedical.com). This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: LH HH JHD. Performed the experiments: LH. Analyzed the data: LH. Contributed reagents/materials/analysis tools: LH. Wrote the paper: LH HH JHD PJB.