About the Authors

Emanuele Marzetti

emarzetti@live.com (EM); cleeuwen@ufl.edu (CL)

Affiliations Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida, United States of America, Department of Orthopedics and Traumatology, Institute of Orthopedics, Catholic University of the Sacred Heart, Rome, Italy

Hazel A. Lees

Affiliation Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida, United States of America

Todd M. Manini

Affiliation Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida, United States of America

Thomas W. Buford

Affiliation Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida, United States of America

Juan M. Aranda Jr.

Affiliation Department of Medicine, College of Medicine, University of Florida, Gainesville, Florida, United States of America

Riccardo Calvani

Affiliations National Research Council (CNR), Institute of Crystallography, Bari, Italy, Department of Gerontology, Geriatrics and Physiatrics, Institute of Internal Medicine and Geriatrics, Catholic University of the Sacred Heart, Rome, Italy

Giorgio Capuani

Affiliation Department of Chemistry, “Sapienza” University of Rome, Rome, Italy

Michael Marsiske

Affiliation Department of Clinical and Health Psychology, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, United States of America

Donovan J. Lott

Affiliation Department of Physical Therapy, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, United States of America

Krista Vandenborne

Affiliation Department of Physical Therapy, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, United States of America

Roberto Bernabei

Affiliation Department of Gerontology, Geriatrics and Physiatrics, Institute of Internal Medicine and Geriatrics, Catholic University of the Sacred Heart, Rome, Italy

Marco Pahor

Affiliation Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida, United States of America

Christiaan Leeuwenburgh

emarzetti@live.com (EM); cleeuwen@ufl.edu (CL)

Affiliation Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida, United States of America

Stephanie E. Wohlgemuth

Affiliation Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EM SEW CL TMM MP KV MM. Performed the experiments: HAL SEW TWB DJL JMA. Analyzed the data: EM HAL SEW TMM RC GC TWB DJL. Contributed reagents/materials/analysis tools: GC CL KV RB MP. Wrote the paper: EM RC CL RB. Coordination of participant recruitment: MM. Coordination and execution of muscle biopsies: JMA.