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A graded association of exercise capacity and all-cause mortality in males with high-normal blood pressure.
MedLine Citation:
PMID:  19746293     Owner:  NLM     Status:  Publisher    
Introduction. Information regarding the effect of exercise capacity on mortality risk in individuals with high-normal blood pressure is severely limited. Thus, we evaluated the association of exercise capacity and all-cause mortality in individuals with high-normal blood pressure. Methods. Exercise test was performed in 1727 males with high-normal blood pressure at two Veteran sites (Washington, DC, and Palo Alto, CA). Fitness status was assessed in metabolic equivalents (METs) at exercise peak. All-cause mortality was recorded for a mean follow-up period of 9.8+/-6.0 years. Results. Exercise capacity was inversely associated with all-cause mortality, and the association was independent of traditional cardiovascular risk factors. For each 1 MET increase in exercise capacity, the adjusted mortality risk was reduced by 13%, underscoring the strong predictive value of exercise capacity that was confirmed by ROC analysis. Data analysis according to fitness levels revealed a threshold level of 4 METs, over which the mortality risk was progressively reduced by 30% (hazard ratio=0.70; CI 0.51-0.95) for those who achieved 4.1-6.0 METs and 61% (hazard ratio=0.39; CI 0.26-0.57) for those who achieved 8.1-10 METs. No additional reductions in risk were noted until the MET level achieved exceeded 12 METs. Conclusions. We observed a strong, inverse, graded and independent association between exercise capacity and all-cause mortality in individuals with high-normal blood pressure. Our findings indicate that a shift of the fitness curve to the right is associated with significant survival benefits, and even slight differences in fitness levels are associated with substantial reductions in mortality risk.
Peter Kokkinos; Michael Doumas; Jonathan Myers; Charles Faselis; Athanasios Manolis; Andreas Pittaras; John Peter Kokkinos; Vasilios Papademetriou; Steven Singh; Ross D Fletcher
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2009-9-10
Journal Detail:
Title:  Blood pressure     Volume:  -     ISSN:  1651-1999     ISO Abbreviation:  Blood Press.     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-9-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9301454     Medline TA:  Blood Press     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-7     Citation Subset:  -    
Veterans Affairs Medical Center, 50 Irving Street NW, Washington, DC, USA.
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