investigators: leon blazer jerad thompson
DESCRIPTION
An analysis of differences between the use of visual aids, no aid and non-visual (aural) aid in performance of a volleyball serve and baseball pitch. Investigators: Leon Blazer Jerad Thompson. SERVING/ PITCHING ANALYSIS. Purpose: - PowerPoint PPT PresentationTRANSCRIPT
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AN ANALYSIS OF DIFFERENCES BETWEEN THE USE OF VISUAL AIDS, NO AID AND NON-VISUAL
(AURAL) AID IN PERFORMANCE OF A VOLLEYBALL SERVE AND
BASEBALL PITCH.
Investigators:Leon Blazer
Jerad Thompson
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SERVING/PITCHING ANALYSIS
Purpose: Analyze current methods of teaching pitching and serving
using visual aids Desired Effects
Rope placed 14 inches above top tape of net (102 inches from ground
String placed so that is hangs 16 inches above the front of home plate.
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Problems with Game-like transfer
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Possible Solution Laser device Benefit (sound vs. visual) Possible downsides Marketable?
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SERVING/PITCHING ANALYSIS
Methods: Participants How Selected? Set-up for each study
Rope/String, Panasonic Handi-Cam, Canon GL2 digital camcorder, 2 Dell laptops, Kinovea
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Serving 8-12 Participants 8 days of filming Target 200 serves with and without visual aid
(rope) Rope placed 102 inches from ground or
approximately 14 inches above top tape of volleyball net
Rope spans two courts, analysis only on court nearest to net cam
Two cameras used: Sync cameras to record individual serving results
After trial period, employ use of laser device which will give aural (sound) feedback to alert server if target serve height is reached
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Pitching
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RESULTS - SERVING 234 total serves (151 with rope, 83
without)
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RESULTS - PITCHING
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DISCUSSION - SERVING Differences with/without rope Problems encountered
Why less data points Video speed problems Data capabilities of Kinovea
Frame advance Camera Set-up
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Camera Set-up
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DISCUSSION - SERVING Differences with/without rope Problems encountered
Why less data points Video speed problems Data capabilities of Kinovea
Frame advance Camera Set-up Data Mapping
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Data Mapping