Table 3.
Subjective and training measures in young elite university athletes on days when they slept for <8 h compared to days when slept for 8 or more h.
| Males ( n = 55) | Females ( n = 27) | |||||||
|---|---|---|---|---|---|---|---|---|
| <8 h | ≥8 h | ES | P-value | <8 h | ≥8 h | ES | P-value | |
| ( n = 1,137) | ( n = 4,624) | ( n = 746) | ( n = 2,578) | |||||
| Mood state | 3.7 ± 0.6 | 3.9 ± 0.5 | 0.34 | <0.0001 | 3.7 ± 0.6 | 3.9 ± 0.5 | 0.30 | <0.0001 |
| Sleep quality | 3.1 ± 0.8 | 3.7 ± 0.7 | 0.85 | <0.0001 | 3.0 ± 0.8 | 3.7 ± 0.7 | 0.93 | <0.0001 |
| Energy levels | 3.5 ± 0.7 | 3.8 ± 0.6 | 0.46 | <0.0001 | 3.6 ± 0.6 | 3.8 ± 0.5 | 0.34 | <0.0001 |
| Muscle soreness | 3.7 ± 0.7 | 3.8 ± 0.7 | 0.10 | 0.03 | 4.0 ± 0.7 | 3.9 ± 0.6 | 0.10 | 0.013 |
| Academic pressure | 3.7 ± 0.9 | 3.8 ± 0.8 | 0.10 | 0.0007 | 3.8 ± 0.9 | 3.9 ± 0.8 | 0.10 | 0.01 |
| Training quality | 3.2 ± 0.7 | 3.3 ± 0.6 | 0.10 | 0.05 | 3.2 ± 0.7 | 3.4 ± 0.6 | 0.27 | <0.0001 |
| Training duration (min) | 79.3 ± 40.8 | 82.0 ± 39.2 | 0.06 | 0.22 | 71.3 ± 35.6 | 73.4 ± 39.1 | 0.05 | 0.40 |
| Training RPE | 5.9 ± 1.7 | 5.8 ± 1.6 | 0.06 | 0.36 | 5.5 ± 1.8 | 5.7 ± 1.6 | 0.13 | 0.04 |
| Training load (au) | 480.1 ± 315.4 | 486.0 ± 281.1 | 0.02 | 0.71 | 391.1 ± 238.8 | 426.9 ± 279.0 | 0.12 | 0.04 |
Data are mean ± SD. RPE, rate of perceived exertion; au, arbitrary units, ES, effect size. Sleep duration ranged from 1.0 to 7.8 h for the <8 h data and 8.0 to 14.0 h for the ≥8 h data.