| Effects of a 5-h hilly running on ankle plantar and dorsal flexor force and fatigability. | |
| | |
MedLine Citation:
|
PMID: 22085978 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
This study aimed to examine the effects of a 5-h hilly run on ankle plantar (PF) and dorsal flexor (DF) force and fatigability. It was hypothesised that DF fatigue/fatigability would be greater than PF fatigue/fatigability. Eight male trail long distance runners (42.5 ± 5.9 years) were tested for ankle PF and DF maximal voluntary isokinetic contraction strength and fatigue resistance tests (percent decrement score), maximal voluntary and electrically evoked isometric contraction strength before and after the run. Maximal EMG root mean square (RMS(max)) and mean power frequency (MPF) values of the tibialis anterior (TA), gastrocnemius lateralis (GL) and soleus (SOL) EMG activity were calculated. The peak torque of the potentiated high- and low-frequency doublets and the ratio of paired stimulation peak torques at 10 Hz over 100 Hz (Db10:100) were analysed for PF. Maximal voluntary isometric contraction strength of PF decreased from pre- to post-run (-17.0 ± 6.2%; P < 0.05), but no significant decrease was evident for DF (-7.9 ± 6.2%). Maximal voluntary isokinetic contraction strength and fatigue resistance remained unchanged for both PF and DF. RMS(max) SOL during maximal voluntary isometric contraction and RMS(max) TA during maximal voluntary isokinetic contraction were decreased (P < 0.05) after the run. For MPF, a significant decrease for TA (P < 0.05) was found and the ratio Db10:100 decreased for PF (-6.5 ± 6.0%; P < 0.05). In conclusion, significant isometric strength loss was only detected for PF after a 5-h hilly run and was partly due to low-frequency fatigue. This study contradicted the hypothesis that neuromuscular alterations due to prolonged hilly running are predominant for DF. |
| | |
Authors:
|
François Fourchet; Grégoire P Millet; Katja Tomazin; Kenny Guex; Ken Nosaka; Pascal Edouard; Francis Degache; Guillaume Y Millet |
Related Documents
:
|
17591908 - Light threshold-controlled cone alpha-transducin translocation. 4093878 - The absence of spread of adaptation between rod photoreceptors in turtle retina. 1883768 - Diurnal control of rod function in the chicken. 8977008 - Peripheral colour vision: effects of rod intrusion at different eccentricities. 19787508 - Difference thresholds for the perception of whole-body vertical vibration: dependence o... 12702568 - Firefly luciferin-activated rose bengal: in vitro photodynamic therapy by intracellular... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-11-16 |
Journal Detail:
|
Title: European journal of applied physiology Volume: - ISSN: 1439-6327 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
|
Created Date: 2011-11-16 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:
|
National Sports Medicine Programme, ASPIRE Health Centre-ASPETAR, 2006 Asian Games Road, Doha, Qatar, francois.fourchet@aspire.qa. |
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: Reduced expression of FXYD domain containing ion transport regulator 5 in association wi...
Next Document: The effect of pedalling cadence on maximal accumulated oxygen deficit.