Biomechanical P ... Slalom Water Skiing R1.pdf - Atrium - University ...

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ABSTRACTBIOMECHANICAL PERFORMANCE FACTORS OF SLALOM WATER SKIINGJordan Bray-Miners<strong>University</strong> of Guelph, 2011Advisor: Dr. R John RuncimanThe instrumentation and methodology of this study provided quantitative data for a groupof six advanced slalom skiers. Rope load, skier velocity, ski roll, ski acceleration and skideceleration were calculated during the deep water start and cutting portion of a slalomrun. Four different ski designs were tested in order to determine if the test subjects wereable to achieve a different level of performance on each ski. Through a statistical analysisthere was enough evidence to suggest that a different performance was achieved betweenthe skis, for rope load and peak roll. There was also enough evidence to suggest that theskiers were achieving different overall levels of performance. The analysis procedure ofthis study achieved the goal of proving that it could be used to improve coachingcapabilities and product design in the water ski industry.
AcknowledgmentsI would like to start off by thanking my advisor, John Runciman. Without his passion totake research “outside the box” this project would never have been initiated. Heconstantly assured me that I was doing a good job and showed endless confidence in mypersonal abilities.There have been several other faculty and staff within the School of Engineering thathave had a significant impact on my success. Nate Groendyk is someone who went aboveand beyond his job as a technician to help develop and troubleshoot my electricalcomponents. More importantly he designed the hardware and software for one of mycommunication systems, which was a critical component to the success of my test days.Throughout this study I had the unique experience of working with human participants,who were willing to “donate their body to science”. They volunteered their time out ofinterest and love for the sport of slalom skiing. For that I would like to thank Leo, Hugh,Colin, Blake, Aaron and Kyle.Leo was not only one of my human participants but he also is the owner of an amazingwater skiing facility, Lighthouse Lake <strong>Water</strong> Sports Centre. They allowed me to run allof my test days at their facility. He and his wife, Deb, provided us with great hospitalitywhile we were there.
Page 1: BIOMECHANICAL PERFORMANCE FACTORS O
Page 5: 6.1 Conclusion and Future Considera
Page 8 and 9: 83.42º·s and 48.92 º. There was
Page 10 and 11: List of TablesChapter 4Table 1: Sum
Page 12 and 13: 1.1 The Basics of Water SkiingWater
Page 15 and 16: deep water start a good performance
Page 17 and 18: skills in order to be able to ident
Page 19 and 20: completed their test runs throughou
Page 21 and 22: 1.5 Thesis outlineChapter 2 will pr
Page 23 and 24: Chapter 2: Literature Review13
Page 25 and 26: of material can be used as a force
Page 27 and 28: & Pesty, n.d.; Zang et al., 2004].
Page 29 and 30: instrumentation system used did not
Page 31 and 32: allowed them to plot a velocity ver
Page 33 and 34: Chapter 3: Methods and Instrumentat
Page 35 and 36: AbstractThere are many challenges w
Page 37 and 38: is most likely the main reason why
Page 39 and 40: applicable to dynamic sports [Brodi
Page 41 and 42: The product chosen that best met th
Page 43 and 44: ON) that did not require any modifi
Page 45 and 46: single data collection program that
Page 47 and 48: Figure 3 - Diagram of slalom course
Page 49 and 50: for patterns in the data that sugge
Page 51 and 52: 200SU EC ST BTA150Angle (degrees)10
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10050Angle (Degrees)0-50-100-150Pit
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RF communication systems are easily
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The roll profile can be used to det
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Chapter 4: Water Skiing Biomechanic
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AbstractSix advanced slalom skiers
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Recreational and competitive slalom
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Table 1: Summary of human participa
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Figure 2: Diagram of slalom course
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at a rate of 1 Hz (BG-331RGTGT, Mig
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adjusted p-value. (SAS Institue Inc
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Table 3: Summary of completed turns
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Rope load peaks during the cutting
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Peak skier velocity for each turn i
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4 DiscussionThere are several varia
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trend was seen by Runciman (2011) w
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(p=0.2437 and p=0.246). It was expe
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velocity and low peak rope load. In
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improve the accuracy that a coach e
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Chapter 5: Biomechanical Analysis o
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AbstractWater skiing has received l
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ski manufacturers ability to compar
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given about how the effects of the
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tip. The IMU housing was wrapped in
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(roll, acceleration and deceleratio
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decrease. This portion of the turn
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Roll, Ski Acceleration and SkierVel
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Integral of Roll, Peak Roll (degree
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Integral of Roll, Peak Roll (degree
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Integral of Deceleration (m/s 2 *s)
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Figure 12 shows each ski’s overal
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Integral of Acceleration, Peak Acce
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Integral of Acceleration, Peak Acce
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peak velocity is also occurring at
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was not a significant difference be
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The lack of statistical significanc
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Chapter 6 - Conclusion and Future C
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The data, in combination with a sta
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Bachmann, E.R. (2000). Inertial and
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Appendices119
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Load Transducer Output (V)0.80.70.6
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Skiing Background Information6. How
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Section 2 - Follow up surveyPlease
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Appendix C - Ski Survey ResultsThe
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