Time zone changes give some athletes an edge
Professional teams traveling from later to earlier time zones win more, study finds.
Traveling
across several time zones can be draining for anyone. So, how do professional
athletes manage to turn around and compete in games after traveling from one
coast to another?
Apparently,
not always that well, a new study says. And that's especially true when teams
are traveling from an earlier time zone to a later one.
When professional sports teams in North
America travel west to east, they have a higher winning percentage
than those traveling east to west, researchers said
The
study authors looked at five years of regular season games for the National
Basketball Association, the National Football League and the National Hockey
League. They compared game outcomes and the direction of travel for all the
teams.
The
results showed an advantage for teams in all three leagues traveling west to
east, but the winning effect was most significant in the NBA. The study only
found an association, but suggest circadian rhythms of the athletes are
affected. Circadian rhythms are the physical and mental changes responding to
daylight and darkness within a 24-hour cycle.
They
also raise concerns about well-established practices such as early training
sessions and late-night athletic competitions and the possible negative effects
on performance and health," said study co-author Genevieve
Forest, from the University of Quebec,
Outaouais.
"The
effect of the circadian disadvantage transcends the type of sport being played
and needs to be addressed for greater equity among the western and eastern
teams in professional sports," she said in an American Academy
of Sleep Medicine news release.