About the Authors

Roger A. Fielding

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

roger.fielding@tufts.edu

Affiliation Nutrition, Exercise Physiology, and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, United States of America

Jack M. Guralnik

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Epidemiology and Public Health, University of Maryland School of Medicine, 4655 W. Baltimore Street, Baltimore, MD, United States of America

Abby C. King

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Health Research & Policy, and Stanford Prevention Research Center, Department of Medicine, Stanford University Medical School, Stanford, CA, United States of America

Marco Pahor

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL, United States of America

Mary M. McDermott

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Medicine, Northwestern University Feinberg School of Medicine, 750 N Lake Shore Drive, 10th Floor, Chicago, IL, United States of America

Catrine Tudor-Locke

Roles Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliations Department of Kinesiology, University of Massachusetts Amherst, Amherst, MA, United States of America, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, United States of America

Todd M. Manini

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL, United States of America

Nancy W. Glynn

Roles Conceptualization, Investigation, Methodology, Project administration, Supervision, Visualization, Writing – original draft, Writing – review & editing

Affiliation Center for Aging and Population Health, Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States of America

Anthony P. Marsh

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, United States of America

Robert S. Axtell

Roles Methodology, Project administration, Supervision, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Exercise Science, Southern Connecticut State University, New Haven, CT

Fang-Chi Hsu

Roles Data curation, Formal analysis, Methodology, Validation, Writing – original draft, Writing – review & editing

Affiliation Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, United States of America

W. Jack Rejeski

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Center for Aging and Population Health, Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States of America

for the LIFE study group

Membership of the LIFE study group is provided in the Acknowledgments.

Competing Interests

Dr. Fielding reports grants, personal fees and other from Axcella Health, personal fees from Cytokinetics, grants and personal fees from Biophytis, personal fees from Amazentis, grants and personal fees from Nestle', grants and personal fees from Astellas, personal fees from Glaxo Smithkline, outside the submitted work. There are no other competing interests from co-authors. This does not alter our adherence to PLOS ONE policies on sharing data and materials.