Table 3.
Comparison of CPET Parameters Between the STEMI and NSTEMI-UAP Groups
| STEMI group (n=144) | NSTEMI-UAP group (n=110) | |||||
|---|---|---|---|---|---|---|
| Baseline | Follow-up | P value | Baseline | Follow-up | P value | |
| Baseline | ||||||
| SBP (mmHg) | 119±22 | 122±20 | 0.02 | 127±20* | 127±21 | 0.89 |
| HR (beats/min) | 69±10 | 66±9 | <0.01 | 71±11 | 67±10 | <0.01 |
| AT | ||||||
| ATV̇O2 (mL·min−1·kg−1) | 12.2±2.3 | 13.6±3.1† | <0.01 | 11.5±2.6 | 12.6±2.4 | <0.01 |
| AT (% predicted value) | 83±16 | 92±20† | <0.01 | 78±19 | 86±17 | <0.01 |
| Peak exercise | ||||||
| SBP (mmHg) | 169±27 | 181±29 | <0.01 | 174±207 | 182±29 | <0.01 |
| HR (beats/min) | 122±20 | 129±20 | <0.01 | 119±19 | 125±20 | 0.03 |
| Peak V̇O2 (mL·min−1·kg−1) | 19.0±5.0 | 21.8±5.7 | <0.01 | 17.6±4.3 | 20.4±4.9 | <0.01 |
| Peak V̇O2 (% predicted value) | 80±18 | 92±19 | <0.01 | 77±19 | 89±20 | <0.01 |
| Workload (W) | 97±37 | 112±41 | <0.01 | 89±30 | 103±33 | <0.01 |
| RER | 1.16±0.11 | 1.19±0.14 | 0.02 | 1.18±0.13 | 1.19±0.10 | 0.11 |
| V̇E vs. V̇CO2 slope | 29.9±7.1 | 28.4±5.8 | <0.01 | 30.3±5.8 | 29.1±4.8 | 0.04 |
Data are presented as the mean±SD. *P<0.05 compared with the STEMI group at baseline; †P<0.05 compared with the NSTEMI-UAP group at follow-up. AT, anaerobic threshold; ATV̇O2, anaerobic threshold oxygen consumption; CPET, cardiopulmonary exercise testing; HR, heart rate; peak V̇O2, peak oxygen consumption (exercise capacity); RER, respiratory exchange ratio; SBP, systolic blood pressure; V̇E vs. V̇CO2 slope, slope of the relationship between pulmonary ventilation per minute/carbon dioxide output. Other abbreviations as in Table 1.