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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

PREDICTING PUNCHING ACCELERATION FROM SELECTED STRENGTH AND POWER VARIABLES IN ELITE KARATE ATHLETES: A MULTIPLE REGRESSION ANALYSIS

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Autor(es):
Loturco, Irineu [1, 2, 3] ; Artioli, Guilherme Giannini [2, 4] ; Kobal, Ronaldo [1] ; Gil, Saulo [5, 1] ; Franchini, Emerson [2]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] NAR Nucleus High Performance Sport, Sao Paulo - Brazil
[2] Univ Sao Paulo, Sch Phys Educ & Sport, Martial Arts & Combat Sports Res Grp, BR-05508 Sao Paulo - Brazil
[3] Brazilian Karate Confederat, Sao Paulo - Brazil
[4] Univ Sao Paulo, Sch Phys Educ & Sport, Lab Appl Nutr & Metab, BR-05508 Sao Paulo - Brazil
[5] Univ Sao Paulo, Sch Phys Educ & Sport, Sao Paulo - Brazil
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF STRENGTH AND CONDITIONING RESEARCH; v. 28, n. 7, p. 1826-1832, JUL 2014.
Citações Web of Science: 36
Resumo

Loturco, I, Artioli, GG, Kobal, R, Gil, S, and Franchini, E. Predicting punching acceleration from selected strength and power variables in elite karate athletes: A multiple regression analysis. J Strength Cond Res 28(7): 1826-1832, 2014-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. (AU)

Processo FAPESP: 11/17059-2 - Efeito da suplementação de beta-alanina combinada ou não com bicarbonato de sódio sobre o desempenho anaeróbio intermitente
Beneficiário:Guilherme Giannini Artioli
Linha de fomento: Bolsas no Brasil - Pós-Doutorado