| Blood lactate responses to leg presses performed against inertial resistance. | |
| | |
MedLine Citation:
|
PMID: 16856355 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
INTRODUCTION: A flywheel ergometer has been devised which employs gravity-independent inertial resistance. Concentric and eccentric actions, which are integral to weight-bearing and ambulation activities, may be done on this ergometer. However, blood lactate responses to exercise on the ergometer by contractile mode and training volume are unknown. METHODS: Workout order was balanced so that subjects performed each type of ergometer leg press workout twice in a nonsequential manner. Per workout, 10 repetitions were performed per set. Workouts were as follows: three sets with concentric and eccentric (CE3) actions, three sets with concentric-only (CO3) actions, and six sets with concentric-only (CO6) actions. Pre- and 5-min post-exercise lactate was measured from a fingertip blood drop. Lactate means were compared with a 2 x 3 (time X workout) ANOVA with repeated measures applied to both independent variables and Scheffe's post hoc test. With body mass and performance measures as predictor variables, multivariate regression attempted to explain post-exercise and delta (post-pre) lactate variance. RESULTS: Post-exercise blood lactate values (mmol x L(-1), mean +/- SEM) were as follows: CE3, 8.08 +/- 0.44; CO3, 7.57 +/- 0.49; and CO6, 6.96 +/- 0.43. CE3 and CO6 workouts produced comparable volumes of work. Though several CE3 performance measures were significantly correlated to post-exercise and delta lactate values, power indices had the strongest relationship. DISCUSSION: Factors related to lactate production and clearance caused CE3 values to be highest. Power indices were most correlated to lactate as they denote a higher work rate and reliance on glycolysis. |
| | |
Authors:
|
John F Caruso; Jacquelyn C Herron; Landon B Capps; Michael A Coday; Charles A Ramsey; Jan L Drummond |
Related Documents
:
|
8029245 - Effect of concurrent exercise and physostigmine on lactate and pyruvate in plasma, musc... 19130645 - The influence of exercise order on blood lactate, perceptual, and affective responses. 3337225 - Regional lactate production in early canine endotoxin shock. 2917935 - Exercise alters the distribution of ammonia and lactate in blood. 10730535 - Pulmonary function and exercise challenge test in thai children: 10 years post respirat... 8475875 - Left ventricular wall tension and stress during exercise in athletes and sedentary men. |
Publication Detail:
|
Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Aviation, space, and environmental medicine Volume: 77 ISSN: 0095-6562 ISO Abbreviation: Aviat Space Environ Med Publication Date: 2006 Jul |
Date Detail:
|
Created Date: 2006-07-21 Completed Date: 2006-11-14 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7501714 Medline TA: Aviat Space Environ Med Country: United States |
Other Details:
|
Languages: eng Pagination: 707-12 Citation Subset: IM; S |
Affiliation:
|
Exercise and Sports Science Program, The University of Tulsa, Tulsa, OK 74104, USA. john-caruso@utulsa.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Ergometry Exercise / physiology* Female Glycolysis / physiology Humans Lactic Acid / blood* Male Multivariate Analysis Muscle Contraction / physiology |
| Chemical | |
Reg. No./Substance:
|
50-21-5/Lactic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Intraocular pressure at a simulated altitude of 9000 m with and without 100% oxygen.
Next Document: Neck pain and related disability in helicopter pilots: A survey of prevalence and risk factors.