The effect of different warm-up protocols on post-activation potentiation in high level trained athletes

• Grant number: 19/00511-1
• Support type: Scholarships abroad - Research Internship - Scientific Initiation
• Effective date (Start): March 29, 2019
• Effective date (End): July 25, 2019
• Field of knowledge: Health Sciences - Physical Education
• Principal researcher: Leonardo Coelho Rabello de Lima
• Grantee: Guilherme Beneduzzi Mantovani
• Supervisor abroad: João Paulo Vilas-Boas Soares Campos
• Home Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
• Research place: Universidade do Porto (UP), Portugal
• Associated to the scholarship: 18/05336-0 - The influence of the ACTN3 gene polymorphism in the responsiveness to the post-activation potentiation, BP.IC

Abstract

The present study aims to investigate the biomechanical and neurophysiological responses to different warm-up protocols resulting in post-activation potentiation. Twenty trained athletes will undergo four different warm-up protocols (squats at 91% 1RM, isometric contractions, plyometric exercises and electrical stimulation + squats at 60% 1RM) before and after performing force measurements consisting of maximal isometric contractions at a dynamometer and counter movement jumps. Electromyographic activity of the knee extensor and plantar flexor muscles will be monitored during all tests and spinal and supra spinal excitability will be measured via M-wave, V-wave and H-reflex. The order of each warm-up session will be randomized and the study will be conducted in a cross-over model. Differences between warm-ups will be assessed via two-way ANOVAs with Tukeys, post-hoc tests. (AU)