• Login
    View Item 
    •   Repository Home
    • Brock Theses
    • Masters Theses
    • M.Sc. Applied Health Sciences
    • View Item
    •   Repository Home
    • Brock Theses
    • Masters Theses
    • M.Sc. Applied Health Sciences
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Acute endocrine responses to plyometrics versus resistance exercise in children

    Thumbnail
    View/Open
    Brock_Giannopoulou_Angeliki_2015 (1).pdf (556.2Kb)
    Author
    Giannopoulou, Angeliki
    Metadata
    Show full item record
    Abstract
    The purpose of this study was to examine the acute hormonal responses to a bout of resistance versus plyometric exercise in young male athletes. Specifically, changes in salivary cortisol, testosterone and testosterone-to-cortisol ratio from pre- to post-exercise between the two different exercise protocols were examined. Twenty-six peri-pubertal active boys participated in this cross-over study, completing two exercise sessions. During each session, participants first completed a 30 min control period, which did not include any exercise, and then was randomly assigned to perform a 45 min of either a resistance exercise or a plyometric exercise protocol. All participants crossed over to perform the other exercise protocol during their second exercise session, a week later. Four saliva samples during each protocol were taken at: baseline, pre-exercise, 5 min post-exercise and 30 min post-exercise. Significant increases in testosterone values were reported 5 min post-exercise following the resistance protocol, but not the plyometric protocol. Both exercise protocols resulted in significant cortisol decreases overtime, as well as significant testosterone-to-cortisol ratio increases. The post-exercise increases in salivary testosterone and testosterone-to-cortisol ratio followed the typical exercise induced anabolic response seen in adults. However, the post-exercise decrease in salivary cortisol was different than the typical adult response indicating an insufficient stimulus for this age group maybe due to their stage of the biological development. Thus, in the adolescent boys, exercise appears to change the anabolic to catabolic balance in favor of anabolism.
    URI
    http://hdl.handle.net/10464/6425
    Collections
    • M.Sc. Applied Health Sciences

    Brock University | Copyright © 2006-2015 
    Contact Us | Send Feedback
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Brock University | Copyright © 2006-2015 
    Contact Us | Send Feedback