exercise physiology Flashcards
1
Q
what is structural plasticity?
A
changes in fiber size
2
Q
what is functional plasicity?
A
interconversion of muscle fiber types and/or modulation of mitochondrial density
3
Q
Type I (“________”) fibers are fatigue-
resistant due to their high ________________; these fibers rely on aerobic respiration for ATP and are thus ______________.
A
slow twitch, mitochondrial density, energy-efficient
4
Q
Type II (“__________”) fibers
exhibit rapid cross-bridge cycling, which enables strong contractions that are fueled by _________ _________.
A
fast twitch, anaerobic respiration
5
Q
Type II fibers develop as either ______ _________ _________ or ______ ________ _________ subtypes
A
fast oxidative glycolytic (FOG; Type IIa), fast glycolytic (FG; Type IIx)
6
Q
A
