This may indicate that the impact of the daily flight schedules dissipated only slowly and/or that the hormone response continued ... Throughout the study, subjects also kept a log of daily activities including sleep timing and quality ( figure I).
|Title||:||Commuter airline safety|
|Author||:||United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Aviation|
|Publisher||:||Government Printing Office - 1992|