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| Research article summary (published 29 Sep 2002): |
Repeatability of mae-geri-keage in traditional karate: a three-dimensional analysis with black-belt karateka.
Full Abstract
In karate, performance also depends on a correct body shape, and the repeatability of standardized movements conditions the effectiveness of techniques. The execution of mae-geri-keage (frontal snap kick) was studied in 13 karateka (1st-5th dan). The 3D trajectories of 13 body landmarks were analyzed by an optoelectronic instrument while each karateka performed 10 repetitions of the movement. For each karateka and repetition, the standard deviations of the spatial coordinates x, y, z for each landmark were computed. A total standard deviation of the single participant was also calculated. Two experienced karateka performed with the best repeatability (smaller standard deviation) while executing the studied kick. Generally, the best repeatability was observed in the horizontal plane. The lower variability was observed in hips and head. Ankle and knee of the dominant limb had the worse. The method could detect athletes particularly gifted for the discipline. Moreover, it could help in the identification of those parts of body that do not repeat the movement with the desired precision.
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Author information
Author/s: Sforza, Chiarella (C); Turci, Michela (M); Grassi, Gian Piero (GP); Shirai, Yuri F (YF); Pizzini, Giuliano (G); Ferrario, Virgilio F (VF);
Affiliation: ISEF Lombardia Università degli Studi di Milano, Functional Anatomy Research Center, Dipartimento di Antatomia Umana, Facoltà di Scienze Motorie, Italy. LAFAL@unimi.it
Journal and publication information
Publication Type: Journal Article
Journal: Perceptual and motor skills (Percept Mot Skills), published in United States. (Language: eng)
Reference: 2002-Oct; vol 95 (issue 2) : pp 433-44
Dates: Created 2002/11/18; Completed 2003/03/27; Revised 2004/11/17;
PMID: 12434836, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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