Kinesiology Chapter 3 Slides

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9 Terms

1
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translation motion

the operation changing the position of all points (x,y,z) of an object

2
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pure linear motion

  • movement up/down

  • left/right

  • front/back

3
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pure rotational movement

  • body segment rotates perpendicular to its joint axis with no linear translation of the segments center of mass

4
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traditional linear 3D objects

  • can translate 6 ways in 3 linear dimensions (+/- X, +/- Y, +/- Z)

  • 6 specific directions

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rotational 3D objects

  • rotate in rotational dimensions called “Planes” about a fixed “Axis”

  • 3 planes of motion, each with their own associated axis

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<p>sagital plane</p>

sagital plane

  • rotates about the bilateral axis

  • divides left/right

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<p>frontal plane</p>

frontal plane

  • rotates about the anterior/posterior axis

  • divides front/back

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<p>transverse plane</p>

transverse plane

  • rotates about the polar axis

  • divides top/bottom

9
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usually, translation and ______ are occurring simultaneously

rotation