3.4.3. Sleeping Behaviour
There were no differences observed in any of the sleep parameters (24 h sleep, nocturnal sleep, interrupted nocturnal sleep, time to fall asleep) between eHF and CF throughout the study period. While 24 h sleep decreased from V1 to V4 by approximately 18% in both eHF and CF, the duration of nocturnal sleep increased in both groups by about 9% in eHF and 10% in CF (The mean duration of uninterrupted nocturnal sleep increased across all groups from approximately 4.0 ± 1.8 h per night at V1 to 6.2 ± 1.1 h per night at V4, while the time to fall asleep decreased from approximately 0.8 ± 0.4 h per day at V1 to a mean of 0.5 ± 0.2 h per day at V4 in all groups (