muscle fiber types Flashcards
what causes muscle fibres to contract
electrical impulses from the brain causes them to contract enabling movement
what are muscle fibres
the cells or basic building block of the muscle
does everyone have a mixture of different muscle fibres
yes
slow twitch muscle fibres are (size)
small
small twitch muscle fibres have ____ speeds of contractions
slow
slow twitch muscle fibres produce a __ force (size)
low
slow twitch muscle fibres have __ fatigue tolerance
high
fast twitch muscle fibres have a ___ fibre size
large
the speed of contraction of fast twitch muscle fibres is
fast
the fore produced by fast twitch muscle fibres is
high
the fatigue tolerance of fast twitch muscle fibres is
low
are slow twitch thick or thin
thin
are fast twitch thick or thin
thick
what muscle fibre is used for sprints
fast twitch
what muscle fibre is used for marathon running
slow twitch
those who have higher proportion of slow-twitch muscle fibres are more suited to aerobic or anaerobic activities?
aerobic
why do athletes with more slow twitch fibres suite aerobic activities more
because it allows athletes to work at moderate intensities for long periods of time
anaerobic activities are associated with
fast twitch fibres
slow twitch fibres are what colour
red
what are fast twitch 2A fibres for
moderate intensities, in between slow and fast twitch 2B, they are more prone to fatigue than type 1
what colour are fast twitch 2A
red
type 2B are what colour
white
type 2B is used for
short, fast bursts of power but fatigue rapidly
