HEALTH
GLOSSARY - F
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Fartlek
training:
A training
technique
that
is similar
to interval
training
where
there
are
work-rest
intervals.
However,
unlike
interval
training,
the
work-rest
intervals
are
not
measure
by time
but
how
the
body
feels.
Fast
twitch
fibers:
Muscle
fiber
type
involved
in explosive,
anaerobic
types
of activity.
Fat:
An essential
nutrient
that
provides
energy,
storage
of energy
and
insulation
to the
body.
FITT
theory:
The
theory
governing
proper
frequency,
intensity,
time
and
type
of exercise.
Flexibility:
The
range
of motion
possible
at a
given
joint.
Flexion:
A joint
movement
in which
the
bones
on either
side
of the
joint
are
brought
closer
to each
other
(i.e.,
during
the
upward
movement
of a
biceps
curl).
Frequency:
The
occurrence
of a
workout.
Experts
recommend
a minimum
frequency
of three
times
a week
for
cardiovascular
and
weight
training
exercises.
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