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Comparing dynamics of fluency and inter-limb coordination in climbing activities using multi-scale Jensen–Shannon embedding and clustering

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Abstract

This paper reports the results of two studies carried out in a controlled environment aiming to understand relationships between movement patterns of coordination that emerge during climbing and performance outcomes. It involves a recent method of nonlinear dimensionality reduction, multi-scale Jensen–Shannon neighbor embedding (Lee et al., 2015), which has been applied to recordings of movement sensors in order to visualize coordination patterns adapted by climbers. Initial clustering at the climb scale provides details linking behavioral patterns with climbing fluency/smoothness (i.e., the performance outcome). Further clustering on shorter time intervals, where individual actions within a climb are analyzed, enables more detailed exploratory data analysis of behavior. Results suggest that the nature of individual learning curves (the global, trial-to-trial performance) corresponded to certain behavioral patterns (the within trial motor behavior). We highlight and discuss three distinctive learning curves and their corresponding relationship to behavioral pattern emergence, namely: no improvement and a lack of new motor behavior emergence; sudden improvement and the emergence of new motor behaviors; and gradual improvement and a lack of new motor behavior emergence.

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Acknowledgements

This work was partially funded by the Agence Nationale de la Recherche with the ANR-13-JSH2-004 Dynamov Project. and Belgian F.R.S.-FNRS (National Fund of Scientific Research).

Author information

Authors and Affiliations

  1. LITIS, INSA Rouen, UNIROUEN, UNIHAVRE, Normandie Univ, 76 000, Rouen, France

    Romain Herault

  2. Faculty of Behavioral and Movement Sciences, Amsterdam Vrije Universiteit, Amsterdam, The Netherlands

    Dominic Orth

  3. Normandie Univ, UNIROUEN, CETAPS, 76000, Rouen, France

    Ludovic Seifert

  4. CRIStAL, Bâtiment P2, Avenue Carl Gauss, Université Lille 1, 59655, Villeneuve d’Ascq Cedex, France

    Jeremie Boulanger

  5. Research Associate with the Belgian F.R.S-FNRS, Molecular Imaging, Radiotherapy, and Oncology — IREC, Université catholique de Louvain, Avenue Hippocrate 55, 1200, Brussels, Belgium

    John Aldo Lee

Authors
  1. Romain Herault
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  2. Dominic Orth
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  3. Ludovic Seifert
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  4. Jeremie Boulanger
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  5. John Aldo Lee
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Corresponding author

Correspondence to Romain Herault.

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Responsible editors: Ulf Brefeld and Albrecht Zimmermann.

Appendices

Appendix A: Cluster and fluency time-lines for the second data set

See Figs. 15, 16, 17 and 18.

Fig. 15
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Climber id #12

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Fig. 16
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Climber id #14

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Fig. 17
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Climber id #19

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Fig. 18
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Climber id #21

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Appendix B: Hip position linked to segment cluster for the second data set

Fig. 19
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Hip position linked to segment cluster for the second data set

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Herault, R., Orth, D., Seifert, L. et al. Comparing dynamics of fluency and inter-limb coordination in climbing activities using multi-scale Jensen–Shannon embedding and clustering. Data Min Knowl Disc 31, 1758–1792 (2017). https://doi.org/10.1007/s10618-017-0522-1

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  • DOI: https://doi.org/10.1007/s10618-017-0522-1

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