all right so I just got a DEXA scan done
something that I've done here with Peter
here from body comp imaging in downtown
Vancouver for the last few years
actually haven't seen him in about a
and essentially what this does is it
measures your bone density measures your
body fat your muscle mass it'll
basically give you a whole image of your
body so that you can see you know where
you're you know the proportion of your
muscle is you know the fat where that's
proportion on your body and everything -
so I find it's a much more accurate way
of measuring your body as opposed to
using the scale or anything like that
yes so it's the machine is called a
extra dual energy x-ray densitometer and
it's a mouthful but it's really just
figuring out how much mass is on the
table by sending a small amount of
x-rays through it and measuring the beam
that passes through so if the bid is
empty similar beyond defeat whether it's
just air you're gonna have a hundred
percent of an x-ray beam passing through
the game measured in the bar that's a
buffer when the bone is in the way it
blocks most of the beam muscle blocks
lasts fat blocks even less so we're
measuring grams of your bone mineral
content
your lean tissue mass which is a muscle
organ in a fat mass per pixel and then
we're mostly interested for from a
health perspective in percent fat so we
want women under 35% fat guys under 22
we want athletes significantly move
matches some have been a better
power-to-weight ratio so typically
female Olympians are around 22% fat male
and ends around 12 and then we're making
sure that the muscle symmetry is
appropriate to the sport so a tennis
player might want to bounce more muscle
in his right arm a weightlifter want
some symmetrical we look at the ratios a
lot of guys like have more muscle
forearms and is appropriate for for what
they're like set for muscle we want
about a three to one ratio of like two
arms right and then we're looking at fat
we didn't want more disease risk from
fat in the abdomen so a little bit of
fat there's fun but if it's higher than
the body average that tends to suggest
risk for diabetes heart disease cancer
things that are avoidable so how
accurate is it compared to other forms
of measuring your body fat or waves oh
this is the modern gold standard you're
looking at about one percent error for a
small person one and a half percent
error for a larger individual it's the
same sort of error reduced from the you
duck tank but the dunk tank didn't it
wasn't able to show the distribution of
tissue the house so it just gave us one
value this gives us the same precision
as a dark tank morgana right yeah so I
often find whenever you know certain
people they do like a body fat caliper
or a scale and they're like their their
body fat what they claim is way less
than yeah reality is when you do as a
scan quite often we'll see a plus or
minus eight percent in annual
measurements or in bioelectrical and a
lot of the time when we can buy us
things lower we do
what do you want to be told you want to
be sex but how do you only forty yeah
tell me saying so yeah so the the
problem there is when we get to be older
than say late teenage years we start
getting visceral fat accumulations
typically from sugar from alcohol
and when we're doing caliper measurement
we don't really engage the amount of fat
in the athlete very well we also can't
engage the fat density within the muscle
so as you know from eating different
cuts of beef you get really lean strip
loin you can give quite fatty ribeye
human tissue you know that same
deterioration and fast stratification
and that's hard to pick up on just
manually tense India the tissue
these are cat scans that we're done just
for this purpose
and this is demonstrating a woman who's
visceral fat and a woman without now you
can see they both got fat under the skin
that's normal and healthy that white
tissue there that white tissue there but
this athlete has nothing inside the
abdomen representing fat mass whereas
this individual probably from drinking
lots of us sort of offered juice has got
enormous stores of fat around the bowel
fatty liver disease even fat around her
heart
that's called pericardial fat and she's
got almost no example of fat inside that
visceral cavity but when you look at the
legs we go oh yeah that's more similar
yeah can you lose that fat most
definitely but when the challenge is say
for example when you go for a run you're
gonna have most the blood pooling in
your legs and very little blood flowing
through the abdomen right so steady
state running is a hard way to get rid
of that you might be better off doing
intervals where you're having time to
reap refused the oven pick up some of
those fats in the bloodstream and then
do an activity to end
right um walking is also a surprisingly
good way of getting rid of that because
we maintain moderately good blood flow
to our abdomen when were walking it you
wouldn't when you're sprinting so just
by walking the other neat thing about
walking is that you're working your body
at a relatively low rate allowing to
burn most of that's when we start
pushing ourselves we start working more
glycogen to the muscles of the liver and
less fatty acids as our tree gets higher
in there right so by keeping the rate
low the downside though is you take many
hours walking to burn off the fat
actually one one thing that was a
game-changer for me as I also um the
last few months I got a treadmill desk
yes and so I read this book called get
up why your chair is killing you what to
do about it and it described how like
just even working out for an hour a day
that's not enough not because we're
meant to be standing we're meant to like
even I was thinking like I sitting firm
the computer all day before and that
definitely affects her bone density too
is opposed to now walking all throughout
the day you know whether adds a couple
hours couple extra hours how many um not
entirely sure but you know like
yesterday I walked like four hours on it
you know so that's extra staffs extra
gravitational pull on my bone structure
that I wouldn't get before I think over
a period of time yeah so I was actually
thinking that's probably contributed a
lot to the bone density you just sitting
around all day
[Music]
so this is something as you want to
commit to doing every three months
if you Peter just says have that rate a
little more stretchable counter yeah
because I find you you got it you got a
look at the numbers right you got to
have that consistent measuring to make
sure that what you're doing is working
or not working and you're eventually two
primary goals one you want your
Christmas money back stories so I'm
going to lose some body fat I want to
build my bone density because I have
lower bone density and and not even
necessary you want to regain strength
possibly some muscles a bit more
strength than yet way yeah thank you so
much Peter from body comp imaging if you
guys are in Vancouver
come check them out he's really helped
me and I know you guys would really
appreciate the video yeah you can take a
look at the website its body calm CA and
if you have any questions feel free to
email me thanks
[Music]
you
you
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