1What is Biomechanics
The study of human motion and the causes of motion
2What is Motion
A change in position
3What is Force
Something that causes motion
4How can you measure Strength
By estimating a person's one-repetition maximum
5What is the Line of Pull
The straight line between a muscle's two points of attachment
6The muscles must exert force that is...
Much greater than the external forces they counteract
7What is a Fulcrum or Axis
A fixed point around which a lever rotates
8What is a Moment Arm
The perpendicular distance from the axis to the location of the force
9Gravity is represented by a _______ line
Vertical
10The Moment Arm is represented by a ______ line
Hprizontal
11What is Perpendicular Distance
It changes based on the point in the range of motion of an exercise
12What is Torque
The tendency of a force to cause rotation about an Axis/Fulcrum
13What is the equation of Torque
Torque = Force x Moment Arm
14What is External Force caused by
Weight of an object (Weight on a barbell, limb, manual resistance, etc)
15What is Internal Forces caused by
A force a muscle can produce
16What is the equation of External Torque
External Torque = External Force x Moment Arm
17What is the equation for Internal Torque
Internal Torque = Muscular Effort x Moment Arm
18What must happen in order for the human body to overcome any external load
Internal Torque must be greater than the External Torque
19What is the equation for Work
Work = Force x Distance
20What is Absolute Work
A general measurement of work
21What is Relative Work
Specific to the individual, and is what "feels harder". The lower the reps, the higher the relative work.
22What is the equation of Power
Power = Work/Time
23What is Mobility
Range of Motion around a given joint
24What is Stability
Ability to resist or control movement
25What do muscles need to do to create movemet and resist movement
Produce FORCE
26How do you increase your based of support
By placing your feet farther apart from each other.