title: Control arms in exercise training studies: transitioning from an era of intervention efficacy to one of comparative clinical effectiveness research.
authors.affiliation: Physical Medicine and Rehabilitation, Veterans Affairs Medical Center and the Division of Rheumatology, Dept. of Medicine, Duke Univ. Medical Center, Durham, NC, USA. huffm007@mc.duke.edu
authors.forename: Kim M
authors.initials: KM
authors.lastname: Huffman
authors.forename: Cris A
authors.initials: CA
authors.lastname: Slentz
authors.forename: William E
authors.initials: WE
authors.lastname: Kraus
mesh_terms: D018849:Controlled Clinical Trials as Topic / Q000379:methods*; D019317:Evidence-Based Medicine; D005081:Exercise Therapy; D006304:Health Status; D006305:Health Status Indicators; D006801:Humans; D012107:Research Design; D057212:Therapeutic Equipoise; D016896:Treatment Outcome