Table 4. Sleep strategies used during ultramarathons among subjects indicating they had slept during an ultramarathon.
| n | % | |
|---|---|---|
| Micronap < 5 min | 6 | 4.5 |
| Nap 5–10 min | 4 | 3.0 |
| Nap 10–20 min | 9 | 6.7 |
| Nap 20–30 min | 10 | 7.5 |
| Nap 30–60 min | 2 | 1.5 |
| Sleep episode > 1 h | 18 | 13.4 |
| Nap (unspecified duration) | 19 | 14.2 |
| Micronap + sleep episode > 1 h | 3 | 2.2 |
| Sleep when exhausted | 12 | 9.0 |
| Resist pressure to sleep (stimulant use) | 17 | 12.7 |
| Delay to next aid station | 5 | 3.7 |
| Relaxation | 4 | 3.0 |
| Not specified | 25 | 18.7 |
Micronap was defined as a nap of 5 min or less; nap was defined as a sleep episode of 5 to 60 min. Micronap + sleep episode was defined as the use of short naps at some points in the race and at least one sleep episode > 1 h.