Document Detail

Incorrect calculation of power outputs masks the ergogenic capacity of creatine supplementation.
MedLine Citation:
PMID:  17111019     Owner:  NLM     Status:  MEDLINE    
This study assessed the effect of incorrect calculation of power output measurement on the ergogenic properties of creatine. Fifteen males performed repeated Wingate anaerobic tests, under baseline, placebo, and creatine conditions. Statistics showed significant differences (p < 0.05) following creatine-supplemented conditions compared with placebo conditions, whereas no significant differences existed between the baseline and placebo conditions. However, the performance enhancement effect of creatine became significant only when the corrected (for the inertia of the flywheel) method was employed for measuring peak and minimum power. Mean (+/- SD) values across all cycle sprints for placebo versus creatine were 1033 +/- 100 W versus 1130 +/- 95 W for peak power and 385 +/- 78 W versus 427 +/- 70 W for minimum power. No significant differences were shown using the uncorrected method for peak power (756 +/- 97 W versus 786 +/- 88 W) and minimum power 440 +/- 64 W pre versus 452 +/- 65 W post). In conclusion, the present study suggests that the potentiating effect of creatine might be underestimated if the inertial effects of the flywheel are not considered in power output determination.
Konstadinos Havenetidis; Carlton B Cooke; Ron Butterly; Roderick F G J King
Related Documents :
12585619 - Reliability of performance in repeated sprint cycling tests.
7768239 - Maximal power and torque-velocity relationship on a cycle ergometer during the accelera...
20881879 - Comparison of male and female road cyclists under identical stage race conditions.
19756709 - Physiological factors to predict on traditional rowing performance.
23359219 - Move to improve: how knee osteoarthritis patients can use exercise to enhance quality o...
1559919 - Validity of pulse oximetry during exercise in elite endurance athletes.
10726439 - Exercise-induced bronchospasm in nonasthmatic obese and nonobese boys.
17931899 - Glenohumeral joint volume reduction with progressive release and shifting of the inferi...
2325699 - Excessive plasma k+ increase after ischemic exercise in myotonic muscular dystrophy.
Publication Detail:
Type:  Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  Applied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolisme     Volume:  31     ISSN:  1715-5312     ISO Abbreviation:  -     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-11-19     Completed Date:  2007-03-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101264333     Medline TA:  Appl Physiol Nutr Metab     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  635-42     Citation Subset:  IM    
Division of Physical and Cultural Education, Hellenic Army Academy, D. Vernardou 7, Vrilissia 15235, Athens, Greece.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Creatine / administration & dosage*
Dietary Supplements
Double-Blind Method
Energy Intake
Exercise Test
Physical Exertion / drug effects*
Reg. No./Substance:
0/Placebos; 57-00-1/Creatine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Energy expenditure while performing gymnastic-like motion in spacelab during spaceflight: case study...
Next Document:  Clinical aspects and physiopathology of Brugada syndrome: review of current concepts.