Predicting punching acceleration from selected strength and power variables in elite karate athletes: a multiple regression analysis
Deutscher übersetzter Titel: | Die Voraussage der Schlagbeschleunigung auf Basis ausgewählter Kraft- und Schnellkraftvariablen bei Elite-Karateka: eine multiple Regressionsanalyse |
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Autor: | Loturco, Irineu; Artioli, Guilherme Giannini; Kobal, Ronaldo; Gil, Saulo; Franchini, Emerson |
Erschienen in: | Journal of strength and conditioning research |
Veröffentlicht: | 28 (2014), 7, S. 1826-1832, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1064-8011, 1533-4287 |
DOI: | 10.1519/JSC.0000000000000329 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201408007910 |
Quelle: | BISp |
Abstract
This study investigated the relationship between punching acceleration and selected strength and power variables in 19 professional karate athletes from the Brazilian National Team (9 men and 10 women; age, 23 ± 3 years; height, 1.71 ± 0.09 m; and body mass [BM], 67.34 ± 13.44 kg). Punching acceleration was assessed under 4 different conditions in a randomized order: (a) fixed distance aiming to attain maximum speed (FS), (b) fixed distance aiming to attain maximum impact (FI), (c) self-selected distance aiming to attain maximum speed, and (d) self-selected distance aiming to attain maximum impact. The selected strength and power variables were as follows: maximal dynamic strength in bench press and squat-machine, squat and countermovement jump height, mean propulsive power in bench throw and jump squat, and mean propulsive velocity in jump squat with 40% of BM. Upper- and lower-body power and maximal dynamic strength variables were positively correlated to punch acceleration in all conditions. Multiple regression analysis also revealed predictive variables: relative mean propulsive power in squat jump (W•kg−1), and maximal dynamic strength 1 repetition maximum in both bench press and squat-machine exercises. An impact-oriented instruction and a self-selected distance to start the movement seem to be crucial to reach the highest acceleration during punching execution. This investigation, while demonstrating strong correlations between punching acceleration and strength-power variables, also provides important information for coaches, especially for designing better training strategies to improve punching speed. Verf.-Referat