Heart rate recovery in adult individuals with asthma

Background. Slow heart rate recovery (HRR) after exercise is predictor of overall mortality in individuals with and without cardiovascular or respiratory disorders. No data on adults with asthma are available. Aim. To evaluate the prevalence of slow HRR in these individuals as compared with those with chronic obstructive pulmonary disease (COPD).Methods. Retrospective analysis of baseline characteristics and physiological response to the six-minute walking distance test of stable individuals with asthma or COPD. Slow HRR was defined as HRpeak - HR at 1 minute after end exercise < 12 bpm.Results. Individuals with asthma walked significantly longer (median (IQR): 455 (385-512) vs 427 (345-485) meters; p= 0.005) with a lower prevalence of slow HRR (30.3% vs 49.0%, respectively: ppeak - baseline HR (∆HR), was predictor of slow HRR in both groups.Conclusion. More than 30% of adult individuals with asthma may show slow HRR. Only exercise ∆HR but no baseline characteristic seems predict the occurrence of slow HRR.