Document Detail


One-arm maximal strength training improves work economy and endurance capacity but not skeletal muscle blood flow.
MedLine Citation:
PMID:  21170803     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Maximal strength training with a focus on maximal mobilization of force in the concentric phase improves endurance performance that employs a large muscle mass. However, this has not been studied during work with a small muscle mass, which does not challenge convective oxygen supply. We therefore randomized 23 adult females with no arm-training history to either one-arm maximal strength training or a control group. The training group performed five sets of five repetitions of dynamic arm curls against a near-maximal load, 3 days a week for 8 weeks. This training increased maximal strength by 75% and improved rate of force development during both strength and endurance exercise, suggesting that each arm curl became more efficient. This coincided with a 17-18% reduction in oxygen cost at standardized submaximal workloads (work economy), and a 21% higher peak oxygen uptake and 30% higher peak load during maximal arm endurance exercise. Blood flow assessed by Doppler ultrasound in the axillary artery supplying the working biceps brachii and brachialis muscles could not explain the training-induced adaptations. These data suggest that maximal strength training improved work economy and endurance performance in the skeletal muscle, and that these effects are independent of convective oxygen supply.
Authors:
Ole J Kemi; Oivind Rognmo; Brage H Amundsen; Stig Stordahl; Russel S Richardson; Jan Helgerud; Jan Hoff
Related Documents :
6887063 - A system for evaluation and exercise-conditioning of paralyzed leg muscles.
18087683 - Similar cardiac vagal withdrawal at the onset of arm and leg dynamic exercise.
19794973 - The effects of short-duration exercise on arterial stiffness in patients with stable co...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of sports sciences     Volume:  29     ISSN:  1466-447X     ISO Abbreviation:  J Sports Sci     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8405364     Medline TA:  J Sports Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  161-70     Citation Subset:  IM    
Affiliation:
Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK. ole.kemi@glasgow.ac.uk
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

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


Previous Document:  Taekwondo training and fitness in female adolescents.
Next Document:  Eccentric exercise-induced muscle damage dissociates the lactate and gas exchange thresholds.