Table 3.
CPET indicators of older persons after PCI during the follow-up period.
| Characteristics | With exercise habits (n = 315) | Without exercise habits (n = 88) | P value |
|---|---|---|---|
| Age (years) | 80.7 ± 4.3 | 83.9 ± 3.9 | 0.007 |
| Male (%) | 251 (79.6) | 54 (61.3) | < 0.001 |
| BMI (kg/m2) | 25.0 ± 2.9 | 25.4 ± 3.0 | 0.736 |
| Laboratory indicators | |||
| Cr (μmol/L) | 88.2 ± 13.9 | 89.1 ± 17.3 | 0.057 |
| LDL (mmol/L) | 1.9 ± 0.6 | 1.8 ± 0.5 | 0.609 |
| Hb (g/L) | 137.1 ± 15.4 | 140.3 ± 15.3 | 0.671 |
| NT-proBNP (pg/ml) | 274.7 ± 14.5 | 251.5 ± 13.8 | 0.217 |
| Echocardiography indicators | |||
| LVEDD (mm) | 47.5 ± 4.9 | 48.1 ± 4.3 | 0.513 |
| LVEF (%) | 66.0 ± 8.0 | 67.6 ± 7.9 | 0.387 |
| Sm (cm/s) | 9.2 ± 1.7 | 8.9 ± 1.7 | 0.981 |
| E/Em | 7.2 ± 2.2 | 7.8 ± 2.4 | 0.384 |
| LAP (mmHg) | 10.3 ± 2.8 | 11.1 ± 3.0 | 0.540 |
| CPET indicators | |||
| VO2@AT (ml/min/kg) | 14.2 ± 4.1 | 12.9 ± 3.4 | 0.002 |
| HR@AT (bpm) | 97 ± 12 | 98 ± 13 | 0.426 |
| VO2peak (ml/min/kg) | 17.6 ± 4.0 | 13.9 ± 4.3 | < 0.001 |
| ΔVO2peak (ml/min/kg) | 1.62 ± 0.31 | − 0.02 ± 0.01 | < 0.001 |
| Peak HR (bpm) | 123 ± 16 | 119 ± 17 | 0.026 |
| Peak SBP (mmHg) | 170 ± 25 | 165 ± 27 | 0.834 |
| VE/VCO2 slope | 31.2 ± 5.0 | 31.2 ± 6.7 | 0.989 |
| OUES | 1505.9 ± 350.5 | 1460.3 ± 362.4 | 0.289 |
| HRR | 20 ± 8 | 17 ± 9 | 0.034 |
PCI percutaneous coronary intervention, BMI body mass index, Cr creatinine, LDL low density lipoprotein, Hb hemoglobin, NT-proBNP N-terminal pro-brain natriuretic peptide, LVEDD left ventricular end-diastolic dimension, LVEF left ventricular ejection fraction, Sm systolic velocity of mitral annulus, E/Em the ratio of early diastolic transmitral flow velocity to early diastolic tissue velocity, LAP left atrium pressure, VO2@AT oxygen uptake at anaerobic threshold, HR@AT heart rate at anaerobic threshold, VO2peak peak oxygen uptake, Peak HR peak heart rate, Peak SBP peak systolic blood pressure, VE/VCO2 slope ventilation per carbon dioxide output slope, OUES oxygen uptake efficiency slope, HRR heart rate recovery.