Accepted for Publication: February 10, 2015.
Published Online: March 26, 2015. doi:10.1001/jamaoncol.2015.0226.
Study concept and design: Lakoski, Barlow, Berry, Jones.
Acquisition, analysis, or interpretation of data: Lakoski, Willis, Leonard, Gao, Radford, Farrell, Douglas, DeFina, Jones.
Drafting of the manuscript: Lakoski, DeFina, Jones.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Willis, Barlow, Leonard, Gao, Jones.
Obtained funding: Berry.
Administrative, technical, or material support: Willis, Radford, Douglas.
Study supervision: Lakoski, Douglas, DeFina.
Conflict of Interest Disclosures: Dr Jones is a cofounder of a commercial company, Exercise by Science Inc.
Funding/Support: Dr Lakoski is supported in part by the National Institute of General Medical Sciences/ National Institutes of Health (NIGMS/NIH) (P20GM103644-01A1). Dr Jones is supported in part by research grants from the National Cancer Institute (NCI).
Role of the Funder/Sponsor: The NIGMS/NIH and NCI had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.