| Isometric strength training lowers the O(2) cost of cycling during moderate-intensity exercise. | |
| | |
MedLine Citation:
|
PMID: 22526253 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
The effect of maximal voluntary isometric strength training of knee extensor muscles on pulmonary V'O(2) on-kinetics, the O(2) cost of cycling and peak oxygen uptake (V'O(2peak)) in humans was studied. Seven healthy males (mean ± SD, age 22.3 ± 2.0 years, body weight 75.0 ± 9.2 kg, V'O(2peak) 49.5 ± 3.8 ml kg(-1) min(-1)) performed maximal isometric strength training lasting 7 weeks (4 sessions per week). Force during maximal voluntary contraction (MVC) increased by 15 % (P < 0.001) after 1 week of training, and by 19 % (P < 0.001) after 7 weeks of training. This increase in MVC was accompanied by no significant changes in the time constant of the V'O(2) on-kinetics during 6 min of moderate and heavy cycling intensities. Strength training resulted in a significant decrease (by ~7 %; P < 0.02) in the amplitude of the fundamental component of the V'O(2) on-kinetics, and therefore in a lower O(2) cost of cycling during moderate cycling intensity. The amplitude of the slow component of V'O(2) on-kinetics during heavy cycling intensity did not change with training. Training had no effect on the V'O(2peak), whereas the maximal power output reached at V'O(2peak) was slightly but significantly increased (P < 0.05). Isometric strength training rapidly (i.e., after 1 week) decreases the O(2) cost of cycling during moderate-intensity exercise, whereas it does not affect the amplitude of the slow component of the V'O(2) on-kinetics during heavy-intensity exercise. Isometric strength training can have beneficial effects on performance during endurance events. |
| | |
Authors:
|
Jerzy A Zoladz; Zbigniew Szkutnik; Joanna Majerczak; Marcin Grandys; Krzysztof Duda; Bruno Grassi |
Related Documents
:
|
12828853 - Low-level laser irradiation attenuates production of reactive oxygen species by human n... 15741833 - Blood treatment influences the yield of apoptotic lymphocytes after maximal exercise. 3740083 - Dyspnea in patients with hyperbradykininism and excessive venous pooling. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-4-24 |
Journal Detail:
|
Title: European journal of applied physiology Volume: - ISSN: 1439-6327 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
|
Created Date: 2012-4-24 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100954790 Medline TA: Eur J Appl Physiol Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Department of Physiology and Biochemistry, Faculty of Rehabilitation, University School of Physical Education, AWF-Kraków, Al. Jana Pawla II 78, 31-571, Kraków, Poland, jerzy.zoladz@awf.krakow.pl. |
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: Exercise-induced muscle damage from bench press exercise impairs arm cranking endurance performance.
Next Document: Programmable self-assembly of homo- or hetero-metallomacrocycles using 4-(1H-pyrazolyl-4-yl)pyridine...