Flight Path and Scheduling Effects on Perceived Jet Lag, Fatigue, and Sleep in Footballers Traveling to and From National Teams.

Purpose: This study examined posttravel perceptual responses of national-team footballers (soccer) following different flight paths, arrival/departure times, and trip contexts. Methods: Details of 396 flights from national-team players (N = 68) were obtained and verified via an online flight database. Each player provided ratings of perceptual fatigue, sleep, soreness, stress, and jet lag for 2 days before and after each trip. The flight path (continents of departure and arrival), travel context (into vs out of national team), and arrival and departure times were obtained for each trip. Linear mixed models compared the pretravel with posttravel change in perceptual responses based on flight path, context, and schedule. Results: Perceived jet-lag ratings were more responsive to travel variables (R² =.48) than other perceptual ratings (R² <.26). Travel from Asia to Europe (P <.05) and Europe to Australia (P <.001) had significantly higher jet-lag ratings than all other paths. Fatigue scores were worst following Asia to Europe (P <.05) and Europe to Australia (P <.05) travel, while sleep scores were worst following Europe to Australia travel (P <.01). Perceptual responses were poorer following travel from national team to club compared with all other travel contexts (P <.05). Arrival during the daytime (11 AM to 5 PM) resulted in better perceptual responses than early-morning or late-night arrivals (P <.05). Conclusions: Perceived jet-lag ratings are more responsive to travel demands than perceptual wellness scales in national-team football athletes. Poorer perceptual responses may be expected when travel is longer in nature, ends later in the day, or involves travel out of the national team back to club. [ABSTRACT FROM AUTHOR]