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Which of the following is the definition of a concentric muscle contraction?
when a muscle is active and its attachment draw closer together
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Which of the following is the definition of an eccentric muscle contraction?
when a muscle is active and its attachments are drawn further apart
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Which of the following is the definition of an isometric muscle contraction?
when a muscle is active and its attachments do not move relative to each other
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Muscles that create joint torques that causes a joint to rotate are functioning in the ______ role?
agonist
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Muscles that create joint torques that oppose the joint rotation are functioning in the ______ role?
antagonist
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Muscles that create opposing joint torques in order to keep a joint from rotating are functioning in the _______ role?
stabilizer
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Muscles that create joint torques that eliminate an undesired joint rotation caused by the agonist muscles are functioning in the ______ role?
neutralizer
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Which of the following muscle is an antagonist to the actions of biceps femoris?
quadriceps
- -rectus femoris
- -vastus lateralis
- -vastus medialis
- -vastus intermedius
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According to the muscle force-length relationship, the ability to generate muscle tension is greatest when a muscle is stretch to which of the following conditions?
120% of resting length
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According to the muscle force-velocity relationship, which type of muscle contraction creates the largest muscle forces?
eccentric muscle contraction
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"A muscle in which the muscle fibers and the line of pull of the muscle are in the same direction" is the definition of which of the following type of muscles?
longitudindal
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To propel yourself into the air for a vertical jump, what kind of muscle contraction is used at the hip to speed the body up?
eccentric muscle contraction
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When landing after a vertical jump, what kind of muscle contraction is used at the knee to slow the body down?
concentric muscle contraction
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When you are running, which of the following muscular contraction(s) can be used to speed you up?
concentric and eccentric
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When riding a bicycle, which of the following muscular contraction(s) can be used to speed the bicycle up?
concentric and eccentric
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When you are performing the front crawl swimming technique, which of the following muscular contraction(s) can be used to speed you up?
concentric, eccentric and isometric
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