| Effect of varying light intensity on maximal power production and selected metabolic variables. | |
| | |
MedLine Citation:
|
PMID: 11935384 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
This study was designed to examine the effect of exposure to two levels of light intensity (bright; 5000 lux, dim; 50 lux) prior to supramaximal cycle exercise on performance and metabolic alterations. The exercise was performed after bright and dim light exposure for 90 minutes. Ten male long-distance runners volunteered to take part in the study. They performed 45-sec supramaximal exercise using a cycle ergometer in a 500-lux. Mean power output was measured during the exercise. Lactate and ammonia in the blood and epinephrine and norepinephrine concentrations in plasma were measured at rest immediately after bright and dim light exposures and after the exercise. Bright and dim light exposure prior to exercise did not significantly affect the power output during the exercise. Blood glucose concentration immediately after exercise and plasma epinephrine during the resting period were significantly lower after bright light exposure compared with dim light exposure (p < 0.05). No significant difference was found in blood lactate, ammonia, or plasma norepinephrine levels after exercise following bright and dim light exposures. This study demonstrated that bright light stimulation prior to supramaximal exercise decreases glucose and epinephrine levels, but is not related to physical performance. |
| | |
Authors:
|
T Ohkuwa; H Itoh; T Yamamoto; H Yanagi; Y Yamazaki; T Akimaru |
Related Documents
:
|
15070824 - Recovery of methacholine responsiveness after end of exposure in occupational asthma. 2380484 - In vivo percutaneous absorption studies of volatile organic solvents in hairless mice. ... 7320774 - Otologic referral in industrial hearing conservation programs. 9989474 - Exposure of rana ridibunda to lead i. study of lead accumulation in various tissues and... 1991574 - Effects of exercise training and dietary manipulation on insulin-regulatable glucose-tr... 20190354 - Effect of supplementation with ecklonia cava polyphenol on endurance performance of col... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Archives of physiology and biochemistry Volume: 109 ISSN: 1381-3455 ISO Abbreviation: Arch. Physiol. Biochem. Publication Date: 2001 Dec |
Date Detail:
|
Created Date: 2002-04-05 Completed Date: 2002-06-14 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 9510153 Medline TA: Arch Physiol Biochem Country: Netherlands |
Other Details:
|
Languages: eng Pagination: 430-4 Citation Subset: IM |
Affiliation:
|
Department of General Studies, Nagoya Institute of Technology, Nagoya, Showa-ku, Japan. okuwa@ks.kyy.nitech.ac.jp |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Ammonia
/
blood* Bicycling / physiology* Epinephrine / blood* Exercise / physiology* Heart Rate / physiology Humans Lactates / blood* Male Norepinephrine / blood* Photophobia Physical Education and Training Physical Endurance / physiology* |
| Chemical | |
Reg. No./Substance:
|
0/Lactates; 51-41-2/Norepinephrine; 51-43-4/Epinephrine; 7664-41-7/Ammonia |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evaluating the time limit at maximum aerobic speed in elite swimmers. Training implications.
Next Document: Simvastatin effects on a human lung carcinoma and cholesterol homeostasis of host and non-host mice.