About the Authors

Uffe Laessoe

ufl@ucn.dk

Affiliations Physiotherapy department, University College North Denmark, Denmark, Research and Development department, University College North Denmark, Denmark

Bo Grarup

Affiliation Physiotherapy department, University College North Denmark, Denmark

Jette Bangshaab

Affiliation Research and Development department, University College North Denmark, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: UL BG JB. Performed the experiments: UL BG. Analyzed the data: UL BG. Contributed reagents/materials/analysis tools: UL BG JB. Wrote the paper: UL BG JB.