title: Physical activity status and acute coronary syndromes survival The GREECS (Greek Study of Acute Coronary Syndromes) study.
abstract: OBJECTIVE
  We sought to evaluate the association between physical activity levels and the clinical outcome at presentation, as well as the 30-day prognosis of hospitalized patients with acute coronary syndromes (ACS).
  
  
  BACKGROUND
  Regular physical activity has been associated with decreased risk of coronary heart disease. However, less is known about the effects of life-long physical activity on ACS prognosis.
  
  
  METHODS
  From October 2003 to September 2004, a sample of 6 hospitals located in urban and rural Greek regions were selected, and almost all of their ACS patients were enrolled into the study (2,172 patients were included in the study; 76% men and 24% women). Logistic regression models were applied to evaluate the effect of physical activity status (as assessed using the International Physical Activity Questionnaire) on in-hospital mortality and the 30-day outcome of cardiovascular events (death or rehospitalization due to cardiovascular disease).
  
  
  RESULTS
  An inverse association was observed between the level of physical activity and troponin I levels at presentation (p = 0.01). Moreover, after taking into account various potential confounders, physical activity was associated with a 0.56-fold (95% confidence interval [CI] 0.32 to 0.90) lower odds of in-hospital mortality and a 0.80-fold (95% CI 0.50 to 0.99) lower odds of cardiovascular events within the first month after discharge.
  
  
  CONCLUSIONS
  In conclusion, physical activity is associated with a reduced severity of ACS, reduced in-hospital mortality rates, and improved short-term prognosis.
authors.affiliation: First Cardiology Clinic, School of Medicine, University of Athens, Athens, Greece.
authors.forename: Christos
authors.initials: C
authors.lastname: Pitsavos
authors.forename: Stavros A
authors.initials: SA
authors.lastname: Kavouras
authors.forename: Demosthenes B
authors.initials: DB
authors.lastname: Panagiotakos
authors.forename: Sophia
authors.initials: S
authors.lastname: Arapi
authors.forename: Costas A
authors.initials: CA
authors.lastname: Anastasiou
authors.forename: Spyros
authors.initials: S
authors.lastname: Zombolos
authors.forename: Petros
authors.initials: P
authors.lastname: Stravopodis
authors.forename: Yannis
authors.initials: Y
authors.lastname: Mantas
authors.forename: Yannis
authors.initials: Y
authors.lastname: Kogias
authors.forename: Antonis
authors.initials: A
authors.lastname: Antonoulas
authors.forename: Christodoulos
authors.initials: C
authors.lastname: Stefanadis
mesh_terms: D054058:Acute Coronary Syndrome / Q000401:mortality / Q000503:physiopathology*; D000368:Aged; D000789:Angina, Unstable / Q000401:mortality / Q000503:physiopathology; D004032:Diet; D015444:Exercise; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009203:Myocardial Infarction / Q000401:mortality / Q000503:physiopathology; D011379:Prognosis; D012907:Smoking / Q000453:epidemiology; D012959:Socioeconomic Factors