The infant diaphragm has a relative increase in type 2 fast-twitch fibers.
This makes them more prone to respiratory fatigue or failure.
Type I (slow twitch) fibers have a high oxidative, low glycolytic capacity. Type I fibers permit prolonged repetitive movement.
a) Type 1 fibers are prone to fatigue in infants
b) Type 2 fibers are more resistant to fatigue
c) Type 2 fibers are abundant in infant diaphragms
d) Type 1 fibers permit prolonged repetitive movement in infants
