Table 1.
Baseline characteristics of the study population.
Table 2.
Characteristics of the exercise stress testing and heart rate variability in patients with impaired and preserved exercise capacity.
Table 3.
Determinants of achieving more than 90% of the age predicted maximal heart rate during exercise stress test: univariate logistic regression analysis.
Table 4.
Determinants of achieving more than 90% of the age predicted maximal heart rate during exercise stress test: multi-variate logistic regression analysis*.
Table 5.
Correlates of exercise duration, achieved metabolic equivalent, and rate- pressure product with heart rate variability*, †.
Fig 1.
Odds ratio (OR) and 95% confidence interval (CI) per increment of 1 standard deviation of total power heart rate variability power spectrum for preserved exercise capacity in the younger (< 60 years) and the older (≥ 60 years) subjects; women and men; subjects with and without hypertension or diabetes, after accounting for age.