About the Authors

Jeremy Pomeroy

jeremy.pomeroy@nih.gov

Affiliations Diabetes Epidemiology and Clinical Research Section, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Phoenix, Arizona, United States of America, Healthy Lifestyle Research Center, College of Nursing and Health Innovation, Arizona State University, Phoenix, Arizona, United States of America

Søren Brage

Affiliations Diabetes Epidemiology and Clinical Research Section, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Phoenix, Arizona, United States of America, MRC Epidemiology Unit, Cambridge, United Kingdom

Jeffrey M. Curtis

Affiliation Diabetes Epidemiology and Clinical Research Section, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Phoenix, Arizona, United States of America

Pamela D. Swan

Affiliation Healthy Lifestyle Research Center, College of Nursing and Health Innovation, Arizona State University, Phoenix, Arizona, United States of America

William C. Knowler

Affiliation Diabetes Epidemiology and Clinical Research Section, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Phoenix, Arizona, United States of America

Paul W. Franks

Affiliations Diabetes Epidemiology and Clinical Research Section, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Phoenix, Arizona, United States of America, Genetic and Molecular Epidemiology Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden

Competing Interests

The authors have read the journal's policy and have the following conflicts: Dynastream Inc, Cochrane, Alberta, Canada loaned the AMP-331 activity monitors. Dynastream had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. The loan of the monitors by Dynastream does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JP SB JMC PDS WCK PWF. Performed the experiments: JP SB JMC PWF. Analyzed the data: JP PWF. Wrote the paper: JP SB PDS WCK PWF.