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  • Crewmembers indicated their current status on 100 mm visual analogue scales (VAS) with the following binary anchors: happy – unhappy; healthy – sick; energetic – physically exhausted; mentally sharp – mentally fatigued; not stressed – very stressed; fresh/ready to go – tired; good sleep quality – poor sleep quality (morning only); and high workload – low workload (evening only). 2.2.1.3 Profile of Mood States - Short Form (POMS-SF): Crewmembers completed the POMS-SF [10], [11] in the morning once each week.
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