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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


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)

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