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Kinetic Analyses of Two Fencing Attacks–Lunge and Fleche Nathan Morris, Mark Farnsworth, and D.G.E. Robertson School of Human Kinetics, University of Ottawa,

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Presentation on theme: "Kinetic Analyses of Two Fencing Attacks–Lunge and Fleche Nathan Morris, Mark Farnsworth, and D.G.E. Robertson School of Human Kinetics, University of Ottawa,"— Presentation transcript:

1 Kinetic Analyses of Two Fencing Attacks–Lunge and Fleche Nathan Morris, Mark Farnsworth, and D.G.E. Robertson School of Human Kinetics, University of Ottawa, Ottawa, Canada

2 Introduction Fencing is an Olympic sport There are three weapons 20,000 registered fencers in the U.S. Highly dynamic sport

3 Literature Review Roi, G., & Bianchedi, D. (2008) –Asymmetrical movements –Asymmetrical force production –Most injuries to muscles, tendons, and ligaments of the lower limbs Kerwin, D.G., & Challis, J.H. –Measured joint angles and impact forces Few studies using motion capture analysis, inverse dynamics, or kinetic analysis

4 Methodology 7 Vicon infrared MX13 cameras 3 force platforms Vicon Workstation Visual3D Average of three trials Subject: –Male –Aged: 21 –Internationally competitive athlete

5 Results - Lunge Flexion/ ExtensionAdduction/Abduction Trail leg plantiflexors Trail knee extensors Stabilization during stance phase Trail hip abductors

6 Results - Lunge Large power output from trail ankle and knee joints Large moment for hip abductors particularly for trail leg Negligible hip extension Power for attack comes solely from the trail limb

7 Results - Fleche Adduction/Abduction Lead leg plantiflexors Trail leg plantiflexors Trail knee extensors Lead hip extensors Trail hip flexors stabilize & resist extension Trail hip extensors Trail hip abductors Left hip flexors Lead knee extensors extend and stabilize Flexion/ Extension

8 Results - Fleche Extension from both ankles Abduction of the trail leg Flexion and extension of the hip joint Both left and right lower limbs contribute to movement

9 Discussion - Lunge Power generating muscles contract nearly simultaneously Relies primarily on the extensors of the ankle and knee Pre-stretching of ankle and knee muscles was absent Hip abductors are generally weak muscles Less power but more stability Primary method of attack Low level of coordination

10 Orderly recruitment Utilizes ankle, knee, and hip extensors, hip flexors, and hip abductors Very fast and powerful movement Little control Higher level of coordination Discussion - Fleche

11 Discussion - Lunge vs Fleche Main difference comes from the fleches use of hip extensors Fleche: more power = more tiring Lunge Fleche

12 Conclusions Plantiflexors, knee extensors, hip flexors, extensors, and abductors play important roles in power generation Very asymmetrical movements More emphasis on leg abduction than most human movements

13 References Kerwin, D.G., & Challis, J.H. (1987). Fencing Lunge. International Journal of Sport Biomechanics, 3(2), 167. Retrieved from SPORTDiscus with Full Text database. Roi, G., & Bianchedi, D. (2008). The Science of Fencing. Sports Medicine, 38(6), Retrieved from SPORTDiscus with Full Text database.

14 Thank you! Questions?


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