Mean Physiologic Parameters
| Parameter | P | Caffeine consumers | Non–caffeine consumers |
| Arrhythmia | 0.8995 | 34% | 36% |
| Resting HR (bpm) | 0.0497 | 68.76 (12.32) | 76.82 (15.71) |
| Peak HR (bpm) | 0.0314 | 96.52 (16.72) | 108.00 (13.93) |
| HR response (bpm) | 0.4587 | 27.77 (13.80) | 31.18 (18.73) |
| BP response | 0.3659 | 31% hyper/22% hypo | 20% hyper/10% hypo |
| Atrial fibrillation | 0.3553 | 3% | 9% |
| Hypotension | 0.5387 | 97% | 91% |
| Systolic BP response (mm Hg) | 0.7671 | 10.12 (23.10) | 7.90 (14.37) |
| Diastolic BP response (mm Hg) | 0.0468 | 0.24 (10.46) | −7.20 (16.06) |
| Rest systolic BP (mm Hg) | 0.4453 | 134.72 (19.89) | 129.70 (17.19) |
| Rest diastolic BP (mm Hg) | 0.7210 | 77.54 (13.14) | 79.10 (11.88) |
| Peak systolic BP (mm Hg) | 0.3517 | 144.84 (27.28) | 136.91 (18.82) |
| Peak diastolic BP (mm Hg) | 0.2438 | 77.79 (14.72) | 72.27 (14.83) |
HR = heart rate; bpm = beats per minute; BP = blood pressure; hyper = hypertensive blood pressure response; hypo = hypotensive blood pressure response.
Data in parentheses are SD.