title: Very short/short-term benefit of inpatient/outpatient cardiac rehabilitation programs after coronary artery bypass grafting surgery.
abstract: BACKGROUND
  Exercise-based rehabilitation is an important part of treatment patients following coronary artery bypass graft (CABG) surgery.
  
  
  OBJECTIVE
  To evaluate effect of very short/short-term exercise training on cardiopulmonary exercise testing (CPET) parameters.
  
  
  METHODS
  We studied 54 consecutive patients with myocardial infarction (MI) treated with CABG surgery referred for rehabilitation. The study population consisted of 50 men and 4 women (age 57.72 ± 7.61 years, left ventricular ejection fraction 55% ± 5.81%), who participated in a 3-week clinical and 6-month outpatient cardiac rehabilitation program. The Inpatient program consisted of cycling 7 times/week and daily walking for 45 minutes. The outpatient program consisted mainly of walking 5 times/week for 45 minutes and cycling 3 times/week. All patients performed symptom-limited CPET on a bicycle ergometer with a ramp protocol of 10 W/minute at the start, for 3 weeks, and for 6 months.
  
  
  RESULTS
  After 3 weeks of an exercise-based cardiac rehabilitation program, exercise tolerance improved as compared to baseline, as well as peak respiratory exchange ratio. Most importantly, peak VO2(16.35 ± 3.83 vs 17.88 ± 4.25 mL/kg/min, respectively, P < 0.05), peak VCO2(1.48 ± 0.40 vs 1.68 ± 0.43, respectively, P < 0.05), peak ventilatory exchange (44.52 ± 11.32 vs 52.56 ± 12.37 L/min, respectively, P < 0.05), and peak breathing reserve (52.00% ± 13.73% vs 45.75% ± 14.84%, respectively, P < 0.05) were also improved. The same improvement trend continued after 6 months (respectively, P < 0.001 and P < 0.0001). No major adverse cardiac events were noted during the rehabilitation program.
  
  
  CONCLUSIONS
  Very short/short-term exercise training in patients with MI treated with CABG surgery is safe and improves functional capacity.
authors.affiliation: Department of Cardiovascular Rehabilitation, Institute for Rehabilitation, Belgrade, Serbia.
authors.forename: Dejan
authors.identifier: http://orcid.org/0000-0003-1911-0747
authors.initials: D
authors.lastname: Spiroski
authors.affiliation: Department of Cardiovascular Rehabilitation, Institute for Rehabilitation, Belgrade, Serbia.
authors.forename: Mojsije
authors.initials: M
authors.lastname: Andjić
authors.affiliation: Department of Physical Medicine and Rehabilitation, Institute of Rehabilitation, Belgrade, Serbia.
authors.forename: Olivera Ilić
authors.initials: OI
authors.lastname: Stojanović
authors.affiliation: Department of Physical Medicine and Rehabilitation, Institute of Rehabilitation, Belgrade, Serbia.|Department of Physical Medicine, Belgrade University School of Medicine, Belgrade, Serbia.
authors.forename: Milica
authors.initials: M
authors.lastname: Lazović
authors.affiliation: Department of Cardiology, Belgrade University School of Medicine, Belgrade, Serbia.|Clinic for Cardiology Clinical Centre of Serbia, Belgrade, Serbia.
authors.forename: Ana Djordjević
authors.initials: AD
authors.lastname: Dikić
authors.affiliation: Department of Cardiology, Belgrade University School of Medicine, Belgrade, Serbia.
authors.forename: Miodrag
authors.initials: M
authors.lastname: Ostojić
authors.affiliation: Department of Cardiology, Belgrade University School of Medicine, Belgrade, Serbia.|Clinic for Cardiology Clinical Centre of Serbia, Belgrade, Serbia.
authors.forename: Branko
authors.initials: B
authors.lastname: Beleslin
authors.affiliation: Department of Physical Medicine and Rehabilitation, Institute of Rehabilitation, Belgrade, Serbia.
authors.forename: Snežana
authors.initials: S
authors.lastname: Kostić
authors.affiliation: Clinic for Cardiology, Hospital Medical Center Bežanijska Kosa, Belgrade, Serbia.
authors.forename: Marija
authors.initials: M
authors.lastname: Zdravković
authors.affiliation: Clinic for Internal Disease Inter Medica, Niš, Serbia.
authors.forename: Dragan
authors.initials: D
authors.lastname: Lović
mesh_terms: D000368:Aged; D000553:Ambulatory Care; D000072038:Cardiac Rehabilitation / Q000009:adverse effects / Q000379:methods*; D016507:Cardiology Service, Hospital; D000072599:Cardiorespiratory Fitness; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000534:rehabilitation*; D005080:Exercise Test; D005081:Exercise Therapy / Q000009:adverse effects; D017079:Exercise Tolerance; D005260:Female; D006801:Humans; D007297:Inpatients; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D010045:Outpatients; D020127:Recovery of Function; D012042:Registries; D013997:Time Factors; D016896:Treatment Outcome
keywords: cardiac rehabilitation; cardiopulmonary exercise testing; coronary artery bypass grafting; exercise training