ANACpedia

jet lag

Sinônimos: circadian desynchronization
Definição1: Mild temporary symptoms affecting sleep and wake-up cycles caused by travels through a large meridian difference, normally of five time zones or more.
Fonte1: KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
Definição2: Desynchronization between the circadian body clock and the day/night cycle caused by trans-meridian flight (experienced as a sudden shift in the day/night cycle). Also results in internal desynchronization between rhythms in different body functions. Common symptoms include wanting to eat and sleep at times that are out of step with the local routine, problems with digestion, degraded performance on mental and physical tasks, and mood changes. Resolves when sufficient time is spent in the new time zone for the circadian body clock to become fully adapted to local time.
Fonte2: INTERNATIONAL CIVIL AVIATION ORGANIZATION. Fatigue Risk Management Systems – Manual for Regulators. Montréal. First edition – 2012. (Doc 9966).
Contexto: Jet lag is problematic because it involves a sudden shift in the day/night cycle to which the circadian body clock will eventually adapt, given enough time in the new time zone.; Beginning a trip with a sleep debt seems to increase the duration and severity of jet lag symptoms.
Subárea1: Aviation Medicine
Related Term: circadian resynchronization
Português: jet lag