title: Effects of exercise training on peak performance and quality of life in congestive heart failure patients.
abstract: BACKGROUND
  Exercise programs for patients with heart failure have often enrolled and evaluated relatively healthy, young patients. They also have not measured the impact of exercise performance on daily activities and quality of life.
  
  
  RESULTS
  We investigated the impact of a 6-month supervised and graded exercise program in 33 elderly patients with moderate to severe heart failure randomized to usual care or an exercise program. Six of 17 patients did not tolerate the exercise program. Of those who did, peak oxygen consumption increased by 2.4 +/- 2.8 mL/kg/min (P < .05) and 6-minute walk increased by 194 ft (P < .05). However, outpatient energy expenditure did not increase, as measured by either the doubly labeled water technique or Caltrac accelerometer. Perceived quality of life also did not improve, as measured by the Medical Outcomes Study, Functional Status Assessment, or Minnesota Living With Heart Failure questionnaires.
  
  
  CONCLUSIONS
  Elderly patients with severe heart failure can safely exercise, with an improvement in peak exercise tolerance. However, not all patients will benefit, and daily energy expenditure and quality of life do not improve to the same extent as peak exercise.
authors.affiliation: Department of Medicine, University of Maryland School of Medicine, Baltimore 21201, USA.
authors.forename: S S
authors.initials: SS
authors.lastname: Gottlieb
authors.forename: M L
authors.initials: ML
authors.lastname: Fisher
authors.forename: R
authors.initials: R
authors.lastname: Freudenberger
authors.forename: S
authors.initials: S
authors.lastname: Robinson
authors.forename: G
authors.initials: G
authors.lastname: Zietowski
authors.forename: L
authors.initials: L
authors.lastname: Alves
authors.forename: C
authors.initials: C
authors.lastname: Krichten
authors.forename: P
authors.initials: P
authors.lastname: Vaitkevicus
authors.forename: R
authors.initials: R
authors.lastname: McCarter
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D018592:Cross-Over Studies; D004734:Energy Metabolism; D005081:Exercise Therapy; D005260:Female; D005500:Follow-Up Studies; D006333:Heart Failure / Q000378:metabolism / Q000523:psychology / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D010349:Patient Compliance; D011788:Quality of Life; D012449:Safety; D011795:Surveys and Questionnaires; D016896:Treatment Outcome