Biomechanics
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1
What is Biomechanics
The study of human motion and the causes of motion
2
What is Motion
A change in position
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What is Force
Something that causes motion
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How can you measure Strength
By estimating a person's one-repetition maximum
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What is the Line of Pull
The straight line between a muscle's two points of attachment
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The muscles must exert force that is...
Much greater than the external forces they counteract
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What is a Fulcrum or Axis
A fixed point around which a lever rotates
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What is a Moment Arm
The perpendicular distance from the axis to the location of the force
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Gravity is represented by a _______ line
Vertical
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The Moment Arm is represented by a ______ line
Hprizontal
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What is Perpendicular Distance
It changes based on the point in the range of motion of an exercise
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What is Torque
The tendency of a force to cause rotation about an Axis/Fulcrum
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What is the equation of Torque
Torque = Force x Moment Arm
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What is External Force caused by
Weight of an object (Weight on a barbell, limb, manual resistance, etc)
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What is Internal Forces caused by
A force a muscle can produce
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What is the equation of External Torque
External Torque = External Force x Moment Arm
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What is the equation for Internal Torque
Internal Torque = Muscular Effort x Moment Arm
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What must happen in order for the human body to overcome any external load
Internal Torque must be greater than the External Torque
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What is the equation for Work
Work = Force x Distance
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What is Absolute Work
A general measurement of work
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What is Relative Work
Specific to the individual, and is what "feels harder". The lower the reps, the higher the relative work.
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What is the equation of Power
Power = Work/Time
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What is Mobility
Range of Motion around a given joint
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What is Stability
Ability to resist or control movement
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What do muscles need to do to create movemet and resist movement
Produce FORCE
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How do you increase your based of support
By placing your feet farther apart from each other.
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