Table II.
Baseline correlations between smoking and treadmill stress testing parameters
| Current smoking (cpd)
|
Smoking burden (pack-years)
|
Carbon monoxide (ppm)
|
||||
|---|---|---|---|---|---|---|
| r | P | r | P | r | P | |
| Exercise capacity (maximum METS) | −0.22 | <.001 | −0.41 | <.001 | −0.06 | .15 |
| Exercise peak RPP (mm Hg × beats/min) | −0.08 | .06 | −0.28 | <.001 | −0.05 | .24 |
| Exercise peak HR increase (beats/min) | −0.23 | <.001 | −0.50 | <.001 | −0.08 | .05 |
| Exercise HR reserve (%) | −0.15 | <.001 | −0.25 | <.001 | −0.04 | .37 |
| Heart rate recovery at 60 seconds (beats/min) | −0.10 | .10 | −0.19 | <.001 | 0.06 | .35 |
Abbreviations as in Table I.