Subjective sleep quality and fatigue
sleepiness, fatigue
Table Subjective sleep quality, sleepiness, and fatigue scales for the control and collagen peptides trialsAU = arbitrary units; KSS = 7-day average for Karolinska Sleepiness Scale; AM = recorded 30 min after waking; MID = recorded at 14:00; PM = recorded 1 h pre-beda = significantly lower than AM (P < 0.05)b = significantly higher than AM