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

Autor(es)

Loturco, Irineu ^{[1, 2, 3]} ; Artioli, Guilherme Giannini ^{[2, 4]} ; Kobal, Ronaldo ^[1] ; Gil, Saulo ^{[5, 1]} ; Franchini, Emerson ^[2]

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

• 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