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Related Flashcards
Cards In This Set
| Front | Back |
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When training for explosiveness, use ____ resistance
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Light
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DOMS occurs __ hours after exercise
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24-72
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What occurs when calcium is not available?
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Relaxation
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____ and ___ are necessary for myosin crossbridge cycling with actin filaments
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Calcium, ATP
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Type 1 fibers are ___ twitch
Type 2 fibers are ___ twitch
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1= slow
2= fast
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Eccentric muscle action:
Tension in cross bridges is _____
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Less than the external resistance
|
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How do you increase the cross sectional area of muscles?
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Use resistance 65-80% of 1RM
|
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During muscle contraction, the __ and __ decreases
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H-zone, i-band
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This type of muscle action induces the most DOMS
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Eccentric
|
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The sliding filament theory states that the _____
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Actin filaments slide inward on myosin filaments
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Contraction phase: the energy for crossbridge flexion comes from ___
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Hydrolysis of ATP to ADP
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What is released during the action potential to produce a coordinated contraction?
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Calcium
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This type of muscle action is when the tension in cross bridges = resistance to shortening
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Isometric
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What do the cross bridges attach to during muscle action?
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Actin
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Sarcopenia is
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Reduced muscle size and strength
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