scope:

This Technical Report gives guidance for the so-called jet lag phenomenon experienced after longer flights across several time zones. Affected persons exhibit disturbances of bodily functions, in particular of the sleep-wake rhythm (circadian dysrhythmia).

This Technical Report discusses the physiological and psychological backgrounds as well as technical parameters known so far. Potential countermeasures are derived and their effects are discussed.

It is intended that interested parties, such as airlines, receive information for the biologically effective design of the aircraft cabin, and in particular its lighting, in order to minimize possible negative effects.

Personal behaviour and disposition may have a major influence on chronobiological effects. Thus, while the described means to reduce jet lag are not guaranteed to reduce any negative effects, they may provide a positive impact on the individual.