Table 2.
Cardiovascular Parameters by Group.
| Variable | Normal Glucose Tolerance | Impaired Glucose Tolerance | Type 2 Diabetes | |||
|---|---|---|---|---|---|---|
| n | M (SD), Range | n | M (SD), Range | n | M (SD), Range | |
| Screening systolic blood pressure (mm Hg) | 25 | 127.4 (14.3), 106.0–155.0 | 8 | 136.4 (15.6), 113.0–162.0 | 18 | 132.7 (15.2), 109.0–166.0 |
| Screening diastolic blood pressure (mm Hg) | 25 | 80.8 (12.7), 62.0–109.0 | 8 | 82.3 (11.3), 65.0–100.0 | 18 | 84.3 (7.7), 70.0–99.0 |
| Heart rate baseline (bpm) | 25 | 80.8 (10.5), 64.0–100.0 | 8 | 80.6 (11.8), 63.0–96.0 | 18 | 86.8 (9.4), 64.0–98.0 |
| Maximal heart rate (bpm) | 25 | 175.0 (14.9), 141.0–203.0 | 8 | 174.8 (4.3), 170.0–180.0 | 18 | 173.8 (9.0), 153.0–184.0 |
| Time on treadmill (min) | 25 | 8.8 (1.5), 6.4–12.0 | 8 | 8.3 (2.2), 5.0–12.0 | 18 | 7.4 (2.4), 2.4–11.5 |
| VO2 peak (ml · kg−1 · min−1) | 25 | 24.9 (5.4), 13.2–35.0a | 8 | 23.9 (7.9), 14.4–38.4 | 18 | 20.0 (6.0), 13.3–35.8a |
| VO2 (L/min) | 25 | 2.4 (0.7), 1.3–3.5 | 8 | 2.6 (0.9), 1.5–4.2 | 18 | 2.1 (0.7), 1.0–3.7 |
| VT (ml · kg−1 · min−1) | 24 | 17.8 (4.5), 12.2–25.9 | 7 | 18.7 (6.4), 10.9–30.1 | 17 | 15.5 (4.5), 10.2–27.6 |
| VT (L) | 24 | 1.7 (0.5), 1.1–3.0 | 7 | 2.0 (0.8), 1.1–3.3 | 17 | 1.5 (0.5), 0.9–3.2 |
| VT (percentage of actual VO2 peak) | 24 | 75.4 (13.5), 46.2–99.2 | 7 | 74.0 (3.5), 70.1–79.0 | 17 | 75.5 (9.8) 57.0–91.6 |
Note. Bpm = beats per minute; VO2 = oxygen uptake; VO2 peak = peak maximal oxygen uptake; VT = ventilatory threshold; M = mean; SD = standard deviation.
aThe difference between mean peak maximal oxygen uptake for the normal glucose tolerance and type 2 diabetes groups was statistically significant at α < .05 according to the Bonferroni procedure.