History and strategy related to competing in the heat
| Number | Overall | Women | Men | Elite | U23 | Junior |
| 69 | 26 | 43 | 39 | 15 | 15 | |
| History of heat-related symptoms* | ||||||
| Cramping | 26 (37.7) | 3 (12.0) † | 23 (57.5) | 18 (48.6) | 7 (50.0) | 1 (7.1) ‡ § |
| Vomiting | 4 (5.8) | 0 (0.0) | 4 (10.0) | 3 (8.1) | 0 (0.0) | 1 (7.1) |
| Nausea | 13 (18.8) | 4 (16.0) | 9 (22.5) | 7 (18.9) | 2 (14.3) | 4 (28.6) |
| Severe headache | 10 (14.5) | 2 (8.0) | 8 (20.0) | 6 (16.2) | 3 (21.4) | 1 (7.1) |
| Collapsing/fainting | 4 (5.8) | 1 (4.0) | 3 (7.5) | 2 (5.4) | 1 (7.1) | 1 (7.1) |
| History of clinical exertional heat illness* | ||||||
| Exertional heat illness | 11 (15.9) | 3 (12.0) | 8 (20.0) | 7 (18.9) | 2 (14.3) | 2 (14.3) |
| Dehydration | 5 (7.2) | 2 (8.0) | 3 (7.5) | 4 (10.8) | 0 (0.0) | 1 (7.1) |
| Hyponatraemia | 1 (1.4) | 1 (4.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (7.1) |
| Heat exhaustion | 2 (2.9) | 0 (0.0) | 2 (5.0) | 1 (2.7) | 1 (7.1) | 0 (0.0) |
| Heat stroke | 8 (11.6) | 2 (8.0) | 6 (15.0) | 5 (13.5) | 2 (14.3) | 1 (7.1) |
| Time zone crossed | ||||||
| 1 | 3 (4.3) | 3 (14.3) † | 0 (0.0) | 3 (8.8) | 0 (0.0) | 0 (0.0) |
| 2 | 46 (66.7) | 17 (81.0) | 29 (85.3) | 28 (82.4) | 7 (70.0) | 11 (100.0) |
| 3 | 5 (7.2) | 0 (0.0) | 5 (14.7) | 3 (8.8) | 2 (20.0) | 0 (0.0) |
| 10 | 1 (1.4) | 1 (4.8) | 0 (0.0) | 0 (0.0) | 1 (10.0) | 0 (0.0) |
| No. of days arrived before race | ||||||
| ≤3 | 18 (26.1) | 10 (43.5) † | 8 (19.5) | 7 (19.4) | 6 (40.0) | 5 (38.5) |
| 4–6 | 23 (33.3) | 4 (17.4) † | 19 (46.3) | 15 (41.7) | 4 (26.7) | 4 (30.8) |
| 7–9 | 16 (23.2) | 4 (17.4) | 12 (29.3) | 7 (19.4) | 5 (33.3) | 4 (30.8) |
| 10 | 7 (10.1) | 5 (21.7) † | 2 (4.9) | 7 (19.4) | 0 (0.0) | 0 (0.0) |
| Heat training* | ||||||
| None | 15 (21.7) | 2 (7.7) † | 13 (30.2) | 6 (15.4) § | 8 (57.1) | 1 (6.7) § |
| 1–7 days | 20 (29.0) | 10 (38.5) | 10 (23.3) | 5 (12.8) | 3 (21.4) | 12(80) |
| 8–14 days | 14 (20.3) | 6 (23.1) | 8 (18.6) | 12 (30.8) | 1 (7.1) | 1 (6.7) ‡ |
| Living in hot environment | 12 (17.4) | 5 (19.2) | 7 (16.3) | 9 (23.1) | 2 (14.3) | 1 (6.7) |
| Post-race recovery strategy* | ||||||
| None | 5 (7.2) | 2 (7.7) | 3 (7.0) | 0 (0.0) | 1 (6.7) | 4 (26.7) ‡ |
| Active | 33 (47.8) | 8 (30.8) † | 25 (58.1) | 18 (46.2) | 11 (73.3) | 4 (26.7) § |
| Stretching | 38 (55.1) | 13 (50.0) | 25 (58.1) | 23 (59.0) | 9 (60.0) | 6 (40.0) |
| Massage | 53 (76.8) | 20 (76.9) | 33 (76.7) | 33 (84.6) | 11 (73.3) | 9 (60.0) |
| Cold water immersion | 19 (27.5) | 8 (30.8) | 11 (25.6) | 14 (35.9) | 2 (13.3) | 3 (20.0) |
| Hot water immersion | 3 (4.3) | 2 (7.7) | 1 (2.3) | 1 (2.6) | 1 (6.7) | 1 (6.7) |
| Contrast immersion | 4 (5.8) | 3 (11.5) | 1 (2.3) | 2 (5.1) | 1 (6.7) | 1 (6.7) |
| Compression clothing | 27 (39.1) | 15 (57.7) † | 12 (27.9) | 15 (38.5) | 7 (46.7) | 5 (33.3) |
| Electro-stim | 7 (10.1) | 4 (15.4) | 3 (7.0) | 1 (2.6) | 2 (13.3) | 4 (26.7) ‡ |
| Other | 1 (1.4) | 1 (3.8) | 0 (0.0) | 1 (2.6) | 0 (0.0) | 0 (0.0) |
Data as number (percentage of total).
*More than one possible choice, (proportions may not add to 100%).
†Significantly different than men.
‡Significantly different than Elite.
§Significantly different than U23, p<0.05.
U23, under-23.