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Benno M. Nigg

Dr. Richard Nelson contributed to the development of sport biomechanics by being an international facilitator. Together with Dr. Jürg Wartenweiler, he contributed the necessary support and input that allowed the field of Movement and Sports Biomechanics to develop and flourish.

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Christopher L. Vaughan

The aims of this paper are to introduce a simple but general purpose BASIC program which can be applied to nonlinear optimization problems using most microcomputers, and to demonstrate the power and versatility of the method and the ease with which it can be utilized. The example chosen is the jump shot in basketball where the center has to release the ball so that it clears the outstretched hand of the defender, travels the correct horizontal and vertical distance to the hoop, and approaches the basket with a sufficiently large entry angle. The program can be applied to many different problems in sport biomechanics. Keywords are optimization, biomechanics, basketball, microcomputers.

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Christopher A. DiCesare, Adam W. Kiefer, Scott Bonnette, and Gregory D. Myer

Context: Laboratory-based biomechanical analyses of sport-relevant movements such as landing and cutting have classically been used to quantify kinematic and kinetic factors in the context of injury risk, which are then used to inform targeted interventions designed to improve risky movement patterns during sport. However, the noncontextual nature of standard assessments presents challenges for assessing sport-relevant skill transfer. Objective: To examine injury-risk biomechanical differences exhibited by athletes during a jump-landing task performed as part of both a standard biomechanical assessment and a simulated, sport-specific virtual reality (VR)-based assessment. Design: Observational study. Setting: Medical center laboratory. Participants: Twenty-two female adolescent soccer athletes (age = 16.0 [1.4] y, height = 165.6 [4.9] cm, and weight = 60.2 [11.4] kg). Interventions: The landing performance was analyzed for a drop vertical jump task and a VR-based, soccer-specific corner-kick scenario in which the athletes were required to jump to head a virtual soccer ball and land. Main Outcome Measures: Hip, knee, and ankle joint kinematic differences in the frontal and sagittal planes. Results: Athletes exhibited reduced hip and ankle flexion, hip abduction, and frontal plane ankle excursion during landing in realistic sport scenario compared with the standard drop vertical jump task. Conclusion: VR-based assessments can provide a sport-specific context in which to assess biomechanical deficits that predispose athletes for lower-extremity injury and offer a promising approach to better evaluate skill transfer to sport that can guide future injury prevention efforts.

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Robert J. Gregor

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Doris I. Miller

faculty member at the University of Washington (1973–1984), my research continued in the area of sport biomechanics. A major project focused upon the running patterns of 32 individuals with lower-extremity amputations. 2 It was carried out in cooperation with Dr. Ernie Burgess of the Prosthetics Research

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jab International Journal of Sport Biomechanics 0740-2082 1985 1 4 10.1123/ijsb.1985.1.issue-4 Professional Perspectives 10.1123/ijsb.1.4.287 Original Investigations 10.1123/ijsb.1.4.288 Research 10.1123/ijsb.1.4.308 10.1123/ijsb.1.4.330 Technical Notes 10.1123/ijsb.1.4.348 Book Reviews 10

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jab International Journal of Sport Biomechanics 0740-2082 1988 4 4 10.1123/ijsb.1988.4.issue-4 Original Investigations 10.1123/ijsb.4.4.315 Research 10.1123/ijsb.4.4.326 10.1123/ijsb.4.4.342 10.1123/ijsb.4.4.358 10.1123/ijsb.4.4.372 Research Digest 10.1123/ijsb.4.4.393 Original Investigations 10

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jab International Journal of Sport Biomechanics 0740-2082 1992 8 4 10.1123/ijsb.1992.8.issue-4 Original Investigations 10.1123/ijsb.8.4.275 Research 10.1123/ijsb.8.4.288 10.1123/ijsb.8.4.305 10.1123/ijsb.8.4.320 10.1123/ijsb.8.4.331 Original Investigations 10.1123/ijsb.8.4.275 Research 10.1123/ijsb

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jab International Journal of Sport Biomechanics 0740-2082 1986 2 4 10.1123/ijsb.1986.2.issue-4 Original Investigations 10.1123/ijsb.2.4.235 Research 10.1123/ijsb.2.4.260 10.1123/ijsb.2.4.272 10.1123/ijsb.2.4.289 10.1123/ijsb.2.4.301 Original Investigations 10.1123/ijsb.2.4.235 Research 10.1123/ijsb

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jab International Journal of Sport Biomechanics 0740-2082 1988 4 3 10.1123/ijsb.1988.4.issue-3 Original Investigations 10.1123/ijsb.4.3.205 Research 10.1123/ijsb.4.3.220 10.1123/ijsb.4.3.231 10.1123/ijsb.4.3.260 10.1123/ijsb.4.3.282 Original Investigations 10.1123/ijsb.4.3.205 Research 10.1123/ijsb