Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
Views
9639
Download
21
 
©Journal of Sports Science and Medicine (2014) 13, 945 - 950

Research article
Upper Limb Static-Stretching Protocol Decreases Maximal Concentric Jump Performance
Paulo H. Marchetti1, , Fernando H. D. de Oliveira Silva1, Enrico G. Soares1, Érica P. Serpa1, Priscyla S. M. Nardi1, Guanis de B. Vilela1, David G. Behm2
Author Information
1 Methodist University of Piracicaba (UNIMEP), Piracicaba, São Paulo, Brazil
2 Memorial University of Newfoundland, Canada

Paulo H. Marchetti
✉ Methodist University of Piracicaba (UNIMEP). School of Health Sciences. Human Movement Sciences Graduate Program. Human Performance Research Group. Rodovia do Açúcar Km 156, Bloco 7, Sala 39, Taquaral, Piracicaba, SP, Brazil
Email: dr.pmarchetti@gmail.com
Publish Date
Received: 13-08-2014
Accepted: 08-09-2014
Published (online): 01-12-2014
Share this article
 
 
ABSTRACT

The purpose of the present study was to evaluate the acute effects of an upper limb static-stretching (SS) protocol on the maximal concentric jump performance. We recruited 25 young healthy, male, resistance trained individuals (stretched group, n = 15 and control group, n = 10) in this study. The randomized between group experimental protocol consisted of a three trials of maximal concentric jump task, before and after a SS of the upper limb. Vertical ground reaction forces (vGRF) and surface electromyography (sEMG) of both gastrocnemius lateralis (GL) and vastus lateralis (VL) were acquired. An extensive SS was employed consisting of ten stretches of 30 seconds, with 15 seconds of rest, and 70-90% of the point of discomfort (POD). ANOVA (2x2) (group x condition) was used for shoulder joint range of motion (ROM), vGRF and sEMG. A significant interaction for passive ROM of the shoulder joint revealed significant increases between pre- and post-SS protocol (p < 0.001). A significant interaction demonstrated decreased peak force and an increased peak propulsion duration between pre- and post-stretching only for stretch group (p = 0.021, and p = 0.024, respectively. There was a significant main effect between groups (stretch and control) for peak force for control group (p = 0.045). Regarding sEMG variables, there were no significant differences between groups (control versus stretched) or condition (pre-stretching versus post-stretching) for the peak amplitude of RMS and IEMG for both muscles (VL and GL). In conclusion, an acute extensive SS can increase the shoulder ROM, and negatively affect both the propulsion duration and peak force of the maximal concentric jump, without providing significant changes in muscle activation.

Key words: Kinesiology, neuroscience, physiology, performance


           Key Points
  • The jump performance can be affected negatively by an intense extensive static-stretching protocol.
  • An intense acute extensive SS protocol can affect positively the shoulder ROM.
  • The intense acute extensive SS protocol does not change the level of muscle activation for vastus lateralis and gastrocnemius lateralis.
 
 
Home Issues About Authors
Contact Current Editorial board Authors instructions
Email alerts In Press Mission For Reviewers
Archive Scope
Supplements Statistics
Most Read Articles
  Most Cited Articles
 
  
 
JSSM | Copyright 2001-2020 | All rights reserved. | LEGAL NOTICES | Publisher

It is forbidden the total or partial reproduction of this web site and the published materials, the treatment of its database, any kind of transition and for any means, either electronic, mechanic or other methods, without the previous written permission of the JSSM.

This work is licensed under a Creative Commons License Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.