Measurement of Motor Performance

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Measurement of Motor Performance

• Chapter 3 Kines 375

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Two Important Categories

• PERF.. OUTCOME
• Time e.g. RT, MT..
• Distance shot put, golf shot
• Errors - , amount
• Success Rate -

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Continued Two Important Categories

• PERF.. Production
• Joint angle at release, contact
• Motion presentation by
• Displacement
• Velocity
• acceleration
• EEG Electroencephogrphy
• EMG Electromyography
• Kinetic measure of force as cause of motion
• e.g. force plate

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Errors

• Accuracy often noted via errors
• How precise are our measures?

• Error inf. Can/does help determine cause of
  inaccuracy
• Error measures can reveal
• Inconsistency (variability) e.g. beginner
• Movement bias

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Biased
Variable
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• Basketball Free Throw Example
• Practice 74.5
• Game 69.2
• Why???

• What skill classification does FTH fall in?
• Kozar Vaughn Research, BSU Mens BB team
• 1 2 3 4 5 6 7.5 XFH taken at each basket
  during practice

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Players are changing their movement pattern
from practice to game!
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Absolute Error

• Often expressed as average (x) over of trials,
  days etc.
• 5
• 7
• 3
• 9
• 6
• 8
• 38/6 XAE 6.33

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Constant Error

• Gives measure of response bias.
• e.g. direction
• -5 -20
• 7 18
• 3 -2/6 xCE -.33
• -9
• -6
• 8

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Variable Error RMSERadial Error