Narrator: This is Science Today. Muscle atrophy
refers to the shrinkage of muscle fiber from lack
of forceful exertion. Dr. Kenneth Baldwin of the
University of California, Irvine worked with NASA
to come up with an exercise routine to prevent this
from occurring in astronauts traveling through space.
Since muscle atrophy parallels the aging process,
Baldwin says their findings can also be applied
to the general public - especially those over forty.
Baldwin: What we've learned over the years
is that we should be using more activity regimens
that are called high force, low frequency - as in
lifting against a very heavy object.
Narrator: But how does one know if they're
putting enough stress on their muscles?
Baldwin: One simple way is that if you are
lifting weights and you can basically generate about
ten contractions during one session and by the tenth
contraction you can hardly move that object, you
are pretty sure that that individual muscle group
is being adequately stressed.
Narrator: For Science Today, I'm Larissa Branin.