Participant characteristics at baseline, mean±SD (range)
| Post-MIs (n=15, mean±SD (range)) | Controls (n=16, mean±SD (range)) | |
|---|---|---|
| Age (years) | 64.4±6.5 (53–73) | 63.0±6.4 (51–73) |
| Height (m) | 1.78±0.06 (1.64–1.91) | 1.76±0.07 (1.63–1.85) |
| Body mass (kg) | 88.4±13.5 (64.5–113.0) | 83.1±10.5 (65.5–98.0) |
| BMI (kg/m2) | 27.7±3.7 (20.6–36.5) | 26.6±3.2 (18.9–32.0) |
| Pre-exercise resting | ||
| SBP (mm Hg) | 131.8±14.0 (112–159) | 139.3±14.1 (121–161) |
| DBP (mm Hg) | 78.9±7.0 (69–94) | 82.7±7.6 (69–96) |
| HR (bpm) | 58.7±7.4 (48–73)* | 70.3±10.9 (55–89) |
| VO2 (mL/kg/min) | 3.47±0.57 (2.31–4.31) | 3.61±0.56 (2.24–4.38) |
| VO2 (L/min) | 0.31±0.05 (0.28–0.37) | 0.30±0.02 (0.18–0.37) |
| VCO2 (L/min) | 0.32±0.09 (0.15–0.44) | 0.30±0.12 (0.14–0.64) |
| VE (L/min) | 11.9±4.4 (6.3–19.7) | 9.86±3.4 (5.1–18.9) |
| kcal/LO2/min | 5.25±0.13 (5.01–5.36) | 5.25±0.08 (5.12–5.36) |
| RPP (HRxSBP (mm Hg)) | 7692±990 (6426–10176)† | 9749±1504 (7112–11932) |
| VCO2/ VO2 (L/min) | 1.02±0.18 (0.74–1.37) | 0.96±0.24 (0.77–1.75) |
| FVC | 4.4±0.9 (3.5–6.8) | 4.5±0.7 (3.3–5.7) |
| FEV1 | 3.2±0.5 (2.4–4.2) | 3.4±0.6 (2.5–4.5) |
| Weekly physical activity (self-reported) | ||
| 30 min sessions at moderate intensity | 4.6±2.0 (1–7)† | 2.8±1.8 (0–7) |
| 20 min sessions at vigorous intensity | 1.6±1.2 (0–5) | 1.4±1.5 (0–4) |
*Statistically significantly different from controls at p ≤0.05.
†Statistically significantly different from controls at p ≤0.01.
BMI, body mass index; DBP, diastolic blood pressure; FEV1, air volume exhaled at the end of the first second of forced expiration/forced expiratory volume in 1 s; FVC, forced vital capacity; HR, heart rate; kcal/LO2/min, kilocalories per litre of oxygen uptake per minute; RPP, rate pressure product; SBP, systolic blood pressure; VCO2 , carbon dioxide expired; VO2, oxygen uptake; VE, minute ventilation.