J Exerc Nutrition Biochem Search

CLOSE


Journal of Exercise Nutrition & Biochemistry 2010;14(4):205-209.
Effects of Resistance Training following change of Exercise Timing in Circadian Rhythm on Male`s Sex Hormone
Abstract
The purpose of this study was to examine the effects of resistance training following change of exercise timing in circadian cycle on male`s sex hormone. The subjects were divided into morning training group(AMG) and afternoon training group(PMG). The subjects were exercised 70% strength of 1 RM and performed training program that change of exercise timing(cAMG, cPMG) for 3 days after resistance exercise during 4 weeks. The change of blood testosterone, LH, cortisol by resistance training during 4 weeks showed no significantly difference between group. However, blood cortisol concentration showed significantly decreased in both cAMG and cPMG as compare with before and after 4 weeks. As shown above, the changes of male`s sex hormone concentration made no significant difference in either AMG or PMG during 4 weeks, but irregular exercise through changes of exercise timing(cAMU cPMG) significantly decreased blood cortisol concentration. Consequently, irregular resistance training against circadian rhythm decreased normal level of blood cortisol secretion in the morning.
Key Words: Circadian rhythm, testosterone, LH, cortisol, resistance training
TOOLS
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 128 View
  • 0 Download
Related articles in Phys Act Nutr


ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
EDITORIAL POLICY
FOR CONTRIBUTORS
Editorial Office
Korea University, 145 Anam-Ro, Seongbuk-gu,Seoul 02841, Republic of Korea
Tel: +82-10-2235-0018    Fax: +82-2-3290-2315    E-mail: jenbedit@gmail.com                

Copyright © 2021 by Korean Society for Exercise Nutrition.

Developed in M2PI

Close layer
prev next