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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

Capturing complex human behaviors in representative sports contexts with a single camera

1
Faculty of Human Kinetics, Technical University of Lisbon, Lisbon, Portugal
2
School of Science and Technology, University of Évora, Évora, Portugal
3
Faculty of Social and Human Sciences, University of Beira Interior, Covilhã, Portugal
*
Author to whom correspondence should be addressed.
Medicina 2010, 46(6), 408; https://doi.org/10.3390/medicina46060057
Received: 17 May 2010 / Accepted: 7 June 2010 / Published: 12 June 2010
PDF [239 KB, uploaded 15 June 2018]

Abstract

Background and objective. In the last years, several motion analysis methods have been developed without considering representative contexts for sports performance. The purpose of this paper was to explain and underscore a straightforward method to measure human behavior in these contexts.
Material and methods
. Procedures combining manual video tracking (with TACTO device) and bidimensional reconstruction (through direct linear transformation) using a single camera were used in order to capture kinematic data required to compute collective variable(s) and control parameter(s). These procedures were applied to a 1vs1 association football task as an illustrative subphase of team sports and will be presented in a tutorial fashion.
Results
. Preliminary analysis of distance and velocity data identified a collective variable (difference between the distance of the attacker and the defender to a target defensive area) and two nested control parameters (interpersonal distance and relative velocity).
Conclusions
. Findings demonstrated that the complementary use of TACTO software and direct linear transformation permit to capture and reconstruct complex human actions in their context in a low dimensional space (information reduction).
Keywords: TACTO device; direct linear transformation; representative sports contexts; complex behavior TACTO device; direct linear transformation; representative sports contexts; complex behavior
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MDPI and ACS Style

Duarte, R.; Araújo, D.; Fernandes, O.; Fonseca, C.; Correia, V.; Gazimba, V.; Travassos, B.; Esteves, P.; Vilar, L.; Lopes, J. Capturing complex human behaviors in representative sports contexts with a single camera. Medicina 2010, 46, 408.

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