Table 2. Exercise Echocardiographic Characteristics by Heart Rate Recovery^†.

Characteristics	Normal HR recovery and normal diastolic function	Normal HR recovery and abnormal diastolic function	Abnormal HR recovery and normal diastolic function	Abnormal HR recovery and abnormal diastolic function	p value^*
Exercise Variables

METs achieved	11±3	9±2	9±2	8±2	<0.0001
Functional aerobic capacity, %	122±27	117±29	114±30	112±32	<0.0001
Peak systolic blood pressure (mm Hg)	166±23	168±24	165±25	164±25	0.04
Peak heart rate (bpm)	159±19	143±19	142±23	130±21	<0.0001
Rate pressure product, ×10³ (mmHg beats/min)	26.25±4.7	24.20±5.1	23.56±5.6	21.54±5.6	<0.0001
Heart rate recovery (bpm)	40±11	35±9	16±8	16±8	<0.0001

Exercise echo cardiographic variables

E velocity (cm/s)	91±22	85±24	95±24	95±26	<0.0001
E/e'	8±3	10±4	9±3	12±4	<0.0001
Ejection fraction (stress, %)	72±5	71±5	72±5	71±5	0.009

Data presented as mean±SD or n (%).

^†

Heart rate recovery is defined as the difference between heart rate at peak exercise and heart rate at 1 minute in recovery and abnormal heart rate recovery is defined as the lowest quartile for the study sample (≤24 beats per minute).

Categorical variables compared using Pearson χ2 test. Continuous variables compared using ANOVA.

Abbreviations: METs = metabolic equivalents (1 MET = 3.5 mL/Kg per minu consumption); bpm = beats per minute; cm/s = centimeters per second.

Table 2. Exercise Echocardiographic Characteristics by Heart Rate Recovery†.

Table 2. Exercise Echocardiographic Characteristics by Heart Rate Recovery^†.