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CONTRIBUTORS:
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JOURNAL:
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YEAR:
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1999
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PUB TYPE:
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Journal Article
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SUBJECT(S):
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LONG-HORSE; VAULTING; BIOMECHANICS; COMPUTER; SIMULATION
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DISCIPLINE:
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No discipline assigned
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HTTP:
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LANGUAGE:
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English
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PUB ID:
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103-366-669
(Last edited on
2003/04/16 18:55:11 GMT-6)
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SPONSOR(S):
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ABSTRACT:
The optimum pre-flight characteristics of the Hecht and handspring somersault vaults were determined using a two-segment simulation model. The model consisted of an arm segment and a body segment connected by a frictionless pin joint, simulating the vault from the Reuther board take-off through to landing. During horse contact, shoulder torque was set to zero in the model. Five independent pre-flight variables were varied over realistic ranges and an objective function was maximized to find the optimum pre-flight for each vault. The Hecht vault required a low trajectory of the mass centre during pre-flight, with a low vertical velocity of the mass centre and a low angular velocity of the body at horse contact. In contrast, the optimum handspring somersault required a high pre-flight trajectory, with a high angular velocity of the body and a high vertical velocity at horse contact. Despite the simplicity of the model, the optimum pre-flights were similar to those used in competitive performance.
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STATISTICS
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