The making of Avatar: The Way of Water | Sport Science
Published July 4, 2023, 11:20 a.m. by Arrik Motley
The making of the new film avatar: The Way of Water involved the sport of freediving, and the cast of the movie, Kate Winslet, Zoe Saldaña, and Sigourney Weaver had to train to hold their breath underwater for minutes at a time. In this espn Sport Science, Kirk Krack, the film’s performance free diver instructor, explains how the cast and crew learned to safely free dive. avatar: The Way of Water is now playing only in theaters.
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realistic movements for the underwater
scenes in avatar The Way of water
director James Cameron decided to record
performance capture beneath the surface
of an eight and a half meter deep water
tank
since scuba tanks create bubbles that
would interrupt the performance capture
technology cast and crew members trained
to hold their breath for over four
minutes at a time so what's the science
behind holding your breath let's dive in
and find them
prior to training cast members could
hold their breath on average between 45
to 90 seconds
however after just a week of intense
freedive training Kate Winslet who plays
the character Renault was able to hold
her breath for about five minutes
to do this cast members learned what's
called diaphragmatic breathing this deep
breathing technique strengthens the
diaphragm and stretches the lungs and
rib cage allowing you to access 100
percent of your 5-liter vital lung
capacity
once activating maximum lung capacity
they begin a series of incremental
static underwater breath hold increasing
the duration over time these exercises
relax the body and mind inducing What's
called the mammalian diving reflex this
mechanism which is what whales and
dolphins use to stay underwater makes
the body more oxygen efficient it does
this by redirecting blood flow from the
extremities to the organs near the lungs
and reduces heart rate by more than 50
percent
when breathing the inhale oxygen and
exhale carbon dioxide when you hold your
breath stored oxygen is used causing CO2
levels to increase which creates the
urge to Breathe
by exercising the dive reflex you can
actually build a tolerance to the rise
of CO2 calming the urge to breathe which
allows for an extended breath hold
what does all that training add up to
well Kate Winslet was able to set a new
record on a movie set holding her breath
for 7 minutes and 14 seconds which is
slightly less than the amount of time a
bottlenose dolphin holds its breath
foreign
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