About the Authors

Karl Erickson

kte@msu.edu

Affiliation Institute for the Study of Youth Sports, Department of Kinesiology, Michigan State University, East Lansing, MI, United States of America

Jean Côté

Affiliation School of Kinesiology & Health Studies, Queen’s University, Kingston, ON, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KE JC. Performed the experiments: KE. Analyzed the data: KE. Contributed reagents/materials/analysis tools: KE JC. Wrote the paper: KE JC.