Table 1.
Demographics and participant characteristics
| EHS (n = 47) | ERM (n = 13) | Total (n = 60) | P-value | |||||
|---|---|---|---|---|---|---|---|---|
| Sex | 0.18 | |||||||
| Male (n (%)) | 35 (75) | 7 (54) | 42 (70) | |||||
| Female (n (%)) | 12 (25) | 6 (46) | 18 (30) | |||||
| Age at event (years) | 33 (19–65) | 33 (20–57) | 33 (19–65) | 0.74 | ||||
| Height (cm) | 183 (165–204) | 173 (156–193) | 182 (156–204) | 0.033 | ||||
| Weight (kg) | 75 (50–108) | 65 (55–91) | 75 (50–108) | 0.41 | ||||
| BMI (kg/m2) | 23.3 (19.8–31.3) | 21.9 (18.4–27.5) | 22.6 (18.4–31.1) | 0.17 | ||||
| Ethnicity (n (%)) | 0.55 | |||||||
| Caucasian | 43 (92) | 13 (100) | 56 (93) | |||||
| Asian | 3 (6) | 0 (0) | 3 (5) | |||||
| Afro-Caribbean | 1 (2) | 0 (0) | 1 (2) | |||||
| Background (n (%)) | 0.67 | |||||||
| Recreational athlete | 40 (85) | 12 (92) | 52 (87) | |||||
| Professional athlete | 0 (0) | 0 (0) | 0 (0) | |||||
| Military personnel | 7 (15) | 1 (8) | 8 (13) | |||||
| Medical (family) history (n) | Yes | No | Yes | No | Yes | No | NR | |
| Neurological/neuromuscular | – | 47 | – | 13 | – | 60 | – | – |
| Endocrine | – | 47 | 1 | 12 | 1 | 59 | – | – |
| Cardiovascular | – | 47 | – | 13 | – | 60 | – | – |
| Previous episode of EHS | 3 | 44 | – | 6 | 3 | 50 | 7 | 1.00 |
| Previous episode of ERM | – | 31 | 6 | 7 | 6 | 38 | 16 | < 0.001 |
| Family history of ERM | – | 35 | 1 | 10 | 1 | 45 | 14 | 0.23 |
BMI Body mass index; EHS Exertional heatstroke; ERM Exertional rhabdomyolysis; NR Not reported