Autor(es)

Souza, Victor Alvino ; Barreto, Renan Vieira ; Mantovani, Guilherme Beneduzzi ; Greco, Camila Coelho ; Denadai, Benedito Sergio ; Nosaka, Kazunori ; Rabello Lima, Leonardo Coelho

• Tipo de documento: Artigo Científico
• Fonte: RESEARCH QUARTERLY FOR EXERCISE AND SPORT; v. N/A, p. 8-pg., 2022-03-24.

Resumo

Purpose: Explosive performance is increased right after performing loaded resistance exercise, which is known as post-activation performance enhancement (PAPE). Method: We investigated the effects of a plyometric exercise (PLYO) consisting of five sets of six drop-jumps from a 52-cm platform with a load corresponding to 20% body mass on changes in countermovement jump (CMJ) height in sedentary young men. Eleven young nonresistance trained men (19.6 +/- 1.8 y, 69 +/- 9 kg, 1.76 +/- 0.08 m) who showed more than 4% increase in CMJ height at 4 min after five back squats with five-repetition maximum load participated in the study. Their responses to the back squat exercise were examined before (baseline) and 15 minutes, 24 and 48 hours post-PLYO. Exercise-induced muscle damage markers (maximal voluntary contraction torque [MVC], and quadriceps muscle soreness) were assessed at baseline, 15 minutes, 24 and 48 hours following PLYO. Results: MVC torque decreased (p < .05) at 15 minutes post-PLYO (-15.1 +/- 9.7%) but returned to the baseline at 24 hours post-PLYO. Muscle soreness developed (p < .05) at 48 hours (21.0 +/- 20.3 mm) after PLYO, indicating minor muscle damage. CMJ height increased (p < .05) after the five squats at baseline (7.6 +/- 3.8%) indicating PAPE, but no such increase was found at 15 minutes, 24 and 48 hours after PLYO. However, CMJ height before the squat exercise was greater (p < .05) at 24 (5.9 +/- 7.0%) and 48 hours post-PLYO (9.1 +/- 8.5%) than the baseline. Conclusions: These results showed that PAPE disappeared after PLYO that induced minor muscle damage, but CMJ height increased at 24-48 hours in the recovery from PLYO exhibiting a priming effect. (AU)

• Processo FAPESP: 18/05671-4 - A influência do dano muscular induzido pelo exercício na responsividade à potencialização pós-ativação: um estudo a partir de saltos com contramovimento
• Beneficiário: Victor Alvino de Souza
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 19/17596-0 - O dano muscular compromete a responsividade à potencialização pós-ativação?
• Beneficiário: Leonardo Coelho Rabello de Lima
• Modalidade de apoio: Bolsas no Exterior - Pesquisa