Biomechanical Model Jumping

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    Projectile Motion Principle

    "three forces influence the movement of a projectile when it is in air"

    • weight (W)
    • drag force(Image Upload)
    • lift force(Image Upload)

    • "maximum horizontal distance"
    • projectile speed

    time in air

    "time in air"

    • projectile speed
    • relative projection height
    • projection angle

    "maximum vertical height"

    • projectile speed
    • projection angle
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    Sum of Joint Linear Speeds Principle

    "a body's total linear speed is the result of an optimal combination of individual joint linear speeds"
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    Linear Speed - Angular Velocity Principle

    An increase in linear speed (s) of a point on a rotating body component is caused by...

    an increase in the body component's angular velocity (ω)

    and/or

    an increase in the radius of rotation (Image Upload)

    EQUATION: (Image Upload)
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    Joint Torque Principle

    an increase in joint torque (Image Upload) is caused by...

    an increase in a muscle force (Image Upload) pulling on the bones that are held together at the joint

    and/or

    an increase in the moment arm (Image Upload)

    EQUATION: (Image Upload)
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    Angular Inertia Principle

    a decrease in a body component's angular inertia (I) is caused by...

    a decrease in the body component's mass (m)

    and/or

    a decrease in the radius of resistance(Image Upload)

    EQUATION: (Image Upload)
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    Angular Impulse - Momentum Principle

    an increase in angular velocity (ω) of a body component being rotated is caused by...

    an increase in joint torque (Image Upload) applied to the body component

    and/or

    an increase in the application time (t) of the joint torque

    and/or

    a decrease in the body component's angular inertia (I)

    EQUATION: (Image Upload)
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    Action - Reaction Principle

    "for any muscle to create its greatest amount of muscle force, an oppositely directed external force of equal magnitude must exist"
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    External Forces Principle

    "whenever the body is in contact with the ground there are two ground reaction forces (one vertical and one horizontal) that can oppose the muscle forces created inside the body"
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    Friction Force Principle

    an increase in friction force is caused by...

    an increase in the coefficient of friction (μ)

    and/or

    an increase in the vertical ground reaction force (Image Upload)

    EQUATION: (Image Upload)
Author:
Anonymous
ID:
237328
Card Set:
Biomechanical Model Jumping
Updated:
2013-09-27 07:02:41
Tags:
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Description:
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