Transcript Monster_Cow___Steroid_Slides

Monster Cows: Belgian Blue Cattle,
80% meat
Dissections comparing normal,
heterozygous, and homozygous
mice
Myostatin
• A growth factor
(hormone) that
surpresses muscle
growth.
– Slows down development
of muscle stem cells
• In 2002, researchers at
the University of
Pennsylvania showed
that monoclonal antibody
specific to myostatin
improves the condition of
mice with muscular
dystrophy, presumably by
blocking myostatin's
action.
Carl Lewis
• Ran 100 m in 9.86s
– 1991 world record
– Jumps over cars
– 9 Gold Medals
• Excellent example of
Type II fast twitch
muscle
• Also a vegan
• Outspoken, even
damning of those who
used performance
enhancers.
– Like Ben Johnson
Ben Johnson
• Between 1968 and
1983 the 100m record
was shaved by 0.04s
• In one year Johnson
beat it by 0.16s
• 1988 Seoul Olympics
–
–
–
–
–
Johnson: 9.76 s
27 mph
45 strides
Ahead the whole time
Lewis sets an
American record with
9.92s, but still second
• Busted for doping
Back to Carl Lewis
• Johnson’s medal revoked
and given to Lewis
• 5 years later in 2003
Lewis admits he was
busted 3 times in 1988 for
banned stimulants.
– He “thought they were
herbal supplements”
– The U.S. Olympic
committee found his
ingestion to be,
“inadvertant”
– Since it was after the 3
year statute of limitations
he could keep his medals
– Stimulants could have
• Johnson beating Lewis in
‘88
Which leads to the question how do steroids
work?
• Androgenic: increasing
masculine traits
• Anabolic: building muscles
as opposed to
• Catabolic: breaking down
nutrients
Jason Giambi
Barry Bonds
Sammy Sosa
Mark McGwire