Term
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Definition
| used to generate positive work |
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Term
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Definition
| used for energy transfer between joints |
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Term
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Definition
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Term
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Definition
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Term
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Definition
low number indicates force (0.2)
high number indicates velocity (0.6) |
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Term
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Definition
| the greater the number of cross bridges attached to the actin filaments, the larger the contraction force |
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Term
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Definition
shortening contraction
least force generated |
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Term
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Definition
joint angle remains constant
intermediate force generated |
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Term
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Definition
lengthening contraction
greatest force generated |
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Term
| tonic or stability muscles |
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Definition
slow twitch (type I) fibers
used primarily to maintain posture (soleus) |
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Term
| phasic or mobility muscles |
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Definition
fast twitch (type IIa and IIb) fibers
used primarily for short powerful actions (biceps) |
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Term
| muscle length/tension when maximally stimulated |
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Definition
working range is between 70-120% of resting length
lower % results in active insufficiency
higher % results in passive insufficiency |
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Term
| relationship between velocity and peak force |
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Definition
concentric contractions --> slower contractions produce more force
eccentric contractions --> faster contractions produce more force |
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Term
| factors affecting maximal joint torque |
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Definition
muscle cross-sectional area
position of joint
direction of contraction
speed of contraction |
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