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Measuring temporal and spatial accuracy in trampolining

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Abstract

A new measurement system (horizontal displacement, time of flight, synchronicity—HDTS) was investigated regarding the latest changes to the international evaluation rules in trampoline gymnastics. It allows for the real-time measurement of objective criteria, such as flight time and landing position, without affecting the gymnast. The aim of this study was to investigate the temporal and spatial accuracy of a measurement tool via cross-validation. Temporal precision was additionally tested via high-speed video landing and takeoff, while a three-dimensional motion capturing system was incorporated for spatial precision. The Bland–Altman “limit of agreement approach” was used for the assessment of congruence between the measurement systems. The new measurement system presented an average spatial deviation of 3.2 cm and a temporal deviation between − 5.8 and + 6.4 ms for the landing and − 11.3 and + 11.3 ms for the takeoff. Given its temporal and spatial accuracy in determining flight time and landing position as identified through cross-validation, the novel HDTS system proved to be suitable for its use in trampoline competitions.

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Acknowledgements

We thank Dr. Marc H.E. de Lussanet for contributing to this work by supporting in the measurements and the video analyses. Our thanks go to Johannes Maier, General Management Eurotramp (Weilheim a.d. Teck, Germany) for the provision of the trampoline. Funding was provided by Bundesministerium für Wirtschaft und Energie (Grant No. ZF4068601RE5).

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Authors and Affiliations

  1. Department of Training Science, Institute of Sport Science, Justus-Liebig University Gießen, Kugelberg 62, 35394, Giessen, Germany

    Katja Ferger & Michel Hackbarth

  2. Plant Biomechanics Group, University of Freiburg, Freiburg, Germany

    Max D. Mylo

  3. Institute of Sport and Exercise Sciences, University of Muenster, Münster, Germany

    Carsten Müller

  4. University Sports, University of Muenster, Münster, Germany

    Carsten Müller

  5. Movement and Training Science, Institute for Sports Sciences, Goethe-University Frankfurt, Frankfurt, Germany

    Karen Zentgraf

Authors
  1. Katja Ferger
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  2. Michel Hackbarth
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  3. Max D. Mylo
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  4. Carsten Müller
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  5. Karen Zentgraf
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Corresponding author

Correspondence to Katja Ferger.

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Conflict of interest

Dr. Ferger reports grants from Federal Ministry of Economics and Energy, during the conduct of the study; In addition, Dr. Ferger has a patent “Force measuring system for trampoline” 14175727.8/Az. E-DE 114 2 0214/ED licensed. All the other authors have nothing to disclose.

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This article is a part of Topical Collection in Sports Engineering on Measuring Behavior in Sport and Exercise, edited by Dr. Tom Allen, Dr. Robyn Grant, Dr. Stefan Mohr and Dr. Jonathan Shepherd.

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Ferger, K., Hackbarth, M., Mylo, M.D. et al. Measuring temporal and spatial accuracy in trampolining. Sports Eng 22, 18 (2019). https://doi.org/10.1007/s12283-019-0310-9

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