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Modern Tennis Biomechanics

  • Tijana T. Ivancevic
  • Bojan Jovanovic
  • Sasa Jovanovic
  • Milka Djukic
  • Natalia Djukic
  • Alexandar Lukman
Part of the Cognitive Systems Monographs book series (COSMOS, volume 12)

Abstract

Most of dynamics in contemporary human biomechanics is autonomous (see [II06a, II06b, II06c, II07e, II07a, II08c, II08b]). This approach works fine for most individual movement simulations and predictions, in which the total human energy dissipations are insignificant. However, if we analyze a 100 m-dash sprinting motion, which is in case of top athletes finished under 10 s, we can recognize a significant slow-down after about 70m in all athletes - despite of their strong intention to finish and win the race, which is an obvious sign of the total energy dissipation. This can be seen, for example, in a current record-braking speed-distance curve of Usain Bolt, the world-record holder with 9.69 s, or in a former record-braking speed-distance curve of Carl Lewis, the former worldrecord holder (and 9 time Olympic gold medalist) with 9.86 s (see Figure 22.1). In other words, the total mechanical energy of a sprinter cannot be conserved even for 10 s. So, if we want to develop a realistic model of intensive human motion that is longer than 7-8 s, we necessarily need to use the more advanced formalism of time-dependent mechanics.

Keywords

Tangent Bundle Humanoid Robot Cotangent Bundle Contraction Dynamic Cotangent Space 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Tijana T. Ivancevic
    • Bojan Jovanovic
      • Sasa Jovanovic
        • Milka Djukic
          • Natalia Djukic
            • Alexandar Lukman

              There are no affiliations available

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