Table 3.
Sleep diary variables four days before the evening experimental procedures
| Variable | S8 (N = 23) |
S5 (N = 24) |
HIITS8 (N = 21) |
HIITS5 (N = 24) |
P |
|---|---|---|---|---|---|
| TIB (h)* | 9.26 (0.73) | 9.2 (0.99) | 8.90 (0.52) | 9.14 (0.99) | 0.677 |
| TST (h)* | 7.96 (0.78) | 8.08 (0.68) | 7.99 (0.53) | 8.09 (0.65) | 0.865 |
| SOL (min)† | 15.32 (8.60) | 11.10 (6.96) | 14.23 (7.03) | 13.43 (6.46) | 0.145 |
| AWK (number)† | 0.86 (0.73) | 0.98 (1.16) | 0.63 (0.62) | 0.50 (0.56) | 0.210 |
| WASO (min)† | 6.98 (6.70) | 6.44 (9.90) | 4.43 (6.06) | 3.08 (3.35) | 0.126 |
| SE (%)* | 87.17 (5.66) | 88.60 (6.30) | 89.82 (3.57) | 89.09 (5.76) | 0.245 |
N = 92. Data are presented as Mean (SD).
Groups; S8: average sleep opportunity; S5: sleep restriction; HIITS8: HIIT plus average sleep opportunity; and HIITS5: HIIT plus sleep restriction.
HIIT: high-intensity interval training; TIB: time in bed; TST: total sleep time is the amount of sleep duration between the time in bed and time out of bed; AWK: number of awakenings after sleep onset; SOL: sleep onset latency; SE: sleep efficiency is the percent of the time asleep out of the amount of time spent in bed; WASO: wake after sleep onset.
*One-way analysis of variance (ANOVA).
†Kruskal–Wallis test.