Table 2.
A comparison of participants of post-marathon values of participants who completed the marathon (COMPLETION-post) with participants who collapsed during, or following, the marathon completion (COLLAPSE)
| Collapse | Completion-post | P value | ||
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | |||
| Blood plasma | ||||
| Histamine | (μg/L) | 9.6 (17.9) | 13.7 (33.9) | 0.1074 |
| Mast cell tryptase | (μg/L) | 1.77 (0.25) | 1.18 (0.43) | 0.0010** |
| Physiological observations | ||||
| Resting heart rate | (/min) | 124 (23) | 85 (15) | < 0.0001**** |
| Temperature | (°C) | 39.8 (1.3) | 36.2 (0.8) | < 0.0001**** |
| Systolic blood pressure | (mmHg) | 115 (13) | 113 (17) | 0.8452 |
| Diastolic blood pressure | (mmHg) | 60 (9) | 72 (7) | 0.0012** |
| Mean arterial pressure | (mmHg) | 68 (9) | 77 (8) | 0.0327* |
| Echocardiographic-derived measures | ||||
| Systemic vascular resistance | (dynes · sec/cm5) | 537 (197) | 898 (245) | 0.0049** |
| Stroke volume | ml | 84 (25) | 78 (17) | 0.4986 |
| Cardiac output | L/m | 10.0 (3.5) | 6.5 (1.7) | 0.002** |
* ≤ 0.05
** ≤ 0.01
*** ≤ 0.001
**** ≤ 0.0001