Journal of Applied Physiology AJP citation statistics
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 86: 840-844, 1999;
8750-7587/99 $5.00
This Article
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by van Leemputte, M.
Right arrow Articles by Hespel, P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by van Leemputte, M.
Right arrow Articles by Hespel, P.
Vol. 86, Issue 3, 840-844, March 1999

Shortening of muscle relaxation time after creatine loading

M. van Leemputte, K. Vandenberghe, and P. Hespel

Department of Kinesiology, Faculty of Physical Education and Physiotherapy, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium

The effect of creatine (Cr) supplementation on muscle isometric torque generation and relaxation was investigated in healthy male volunteers. Maximal torque (Tmax), contraction time (CT) from 0.25 to 0.75 of Tmax, and relaxation time (RT) from 0.75 to 0.25 of Tmax were measured during 12 maximal isometric 3-s elbow flexions interspersed by 10-s rest intervals. Between the pretest and the posttest, subjects ingested Cr monohydrate (4 × 5 g/day; n = 8) or placebo (n = 8) for 5 days. Pretest Tmax, CT, and RT were similar in Cr and placebo groups. Also in the posttest, Tmax and CT were similar between groups. However, posttest RT was decreased consistently by ~20% (P < 0.05) in the Cr group from the first to the last of the 12 contractions. In addition, the mean decrease in RT after Cr loading was positively correlated with pretest RT (r = 0.82). It is concluded that Cr loading facilitates the rate of muscle relaxation during brief isometric muscle contractions without affecting torque production.

exercise; phosphocreatine; diet; contraction


This article has been cited by other articles:


Home page
 NeurologyHome page
P. Verbessem, J. Lemiere, B. O. Eijnde, S. Swinnen, L. Vanhees, M. Van Leemputte, P. Hespel, and R. Dom
Creatine supplementation in Huntington's disease: A placebo-controlled pilot trial
Neurology, October 14, 2003; 61(7): 925 - 930.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
W. Derave, B. O. Eijnde, P. Verbessem, M. Ramaekers, M. Van Leemputte, E. A. Richter, and P. Hespel
Combined creatine and protein supplementation in conjunction with resistance training promotes muscle GLUT-4 content and glucose tolerance in humans
J Appl Physiol, May 1, 2003; 94(5): 1910 - 1916.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
P. Hespel, B. O. 't Eijnde, and M. Van Leemputte
Opposite actions of caffeine and creatine on muscle relaxation time in humans
J Appl Physiol, February 1, 2002; 92(2): 513 - 518.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
G. R. Steenge, E. J. Simpson, and P. L. Greenhaff
Protein- and carbohydrate-induced augmentation of whole body creatine retention in humans
J Appl Physiol, September 1, 2000; 89(3): 1165 - 1171.
[Abstract] [Full Text] [PDF]

Home page
 Physiol. Rev.Home page
M. Wyss and R. Kaddurah-Daouk
Creatine and Creatinine Metabolism
Physiol Rev, July 1, 2000; 80(3): 1107 - 1213.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online