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
3
What is Force
Something that causes motion
4
How can you measure Strength
By estimating a person's one-repetition maximum
5
What is the Line of Pull
The straight line between a muscle's two points of attachment
6
The muscles must exert force that is...
Much greater than the external forces they counteract
7
What is a Fulcrum or Axis
A fixed point around which a lever rotates
8
What is a Moment Arm
The perpendicular distance from the axis to the location of the force
9
Gravity is represented by a _______ line
Vertical
10
The Moment Arm is represented by a ______ line
Hprizontal
11
What is Perpendicular Distance
It changes based on the point in the range of motion of an exercise
12
What is Torque
The tendency of a force to cause rotation about an Axis/Fulcrum
13
What is the equation of Torque
Torque = Force x Moment Arm
14
What is External Force caused by
Weight of an object (Weight on a barbell, limb, manual resistance, etc)
15
What is Internal Forces caused by
A force a muscle can produce
16
What is the equation of External Torque
External Torque = External Force x Moment Arm
17
What is the equation for Internal Torque
Internal Torque = Muscular Effort x Moment Arm
18
What must happen in order for the human body to overcome any external load
Internal Torque must be greater than the External Torque
19
What is the equation for Work
Work = Force x Distance
20
What is Absolute Work
A general measurement of work
21
What is Relative Work
Specific to the individual, and is what "feels harder". The lower the reps, the higher the relative work.
22
What is the equation of Power
Power = Work/Time
23
What is Mobility
Range of Motion around a given joint
24
What is Stability
Ability to resist or control movement
25
What do muscles need to do to create movemet and resist movement
Produce FORCE
26
How do you increase your based of support
By placing your feet farther apart from each other.
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