Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis.

Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis. Abstract Text:

Hitoshi Watanabe,Kanji Watanabe,Tsuyoshi Wadazumi,Fujiko Yoneyama,Hitoshi Watanabe,Kanji Watanabe,Tsuyoshi Wadazumi,Fujiko Yoneyama,Hitoshi Watanabe,Kanji Watanabe,Tsuyoshi Wadazumi,Fujiko Yoneyama,

This study attempts to clarify whether intensity of exercise influences functional sympatholysis during mild rhythmic handgrip exercise (RHG). We measured muscle oxygenation in both exercising and non-exercising muscle in the same arm in 11 subjects using near infrared spectroscopy (NIRS), heart rate, and blood pressure. We used the total labile signal to assess the relative muscle oxygenation by occlusion for 6 min. Subjects performed RHG (20 times/min) for 6 min at 10%, 20%, and 30% of maximal voluntary contraction (MVC) at random. We used a non-hypotensive lower body negative pressure (LBNP) of 220 mmHg for 2 min to elicit reproducible enhancement in muscle sympathetic nerve activity (MSNA) at rest and during RHG. LBNP caused decreases of 16.4% and 17.7% of the level of muscle oxygenation at rest (pre) in exercising (forearm) and non-exercising (upper arm) muscle respectively. Muscle oxygenation in non-exercising muscle with the application of LBNP during RHG did not change significantly at each intensity. In contrast, the decrease in muscle oxygenation in exercising muscle attenuated progressively as exercise intensity increased (10% MVC 8.8+/-2.8%, 20% MVC 7.1+/-2.0%, 30% MVC 4.6+/-3.0%), when LBNP was applied during RHG. The attenuation of the decrease in muscle oxygenation due to LBNP during RHG at 10%, 20%, and 30% was significantly different from that at rest (p<0.01). These findings indicate that functional sympatholysis during mild RHG might be attributed to exercise intensity.

Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis. Publishing Authors By Initials

H Watanabe,K Watanabe,T Wadazumi,F Yoneyama,H Watanabe,K Watanabe,T Wadazumi,F Yoneyama,H Watanabe,K Watanabe,T Wadazumi,F Yoneyama,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of physiological anthropology

VOLUME: 26

Page Numbers: 593-7

Journal Abbreviation:

ISSN: 1880-6791

DAY: 4

MONTH: Nov

YEAR: 2007

Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 101269653

Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis.

AFFILIATION: Research Center for Urban Health and Sports, Osaka City University.

Country: Japan

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: J Physiol Anthropol

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis Related Publications

• 2'-epi-orobanchol and solanacol, two unique strigolactones, germination stimulants for root parasitic weeds, produced by tobacco.
• A MODIFIED METHOD FOR THE LARGE SCALE PREPARATION OF CRYSTALLINE HEMIN CHLORIDE FROM BLOOD.
• A neural network with asymmetric basis functions for feature extraction of ECG P waves.
• An evaluation of the mobility of pathogen indicators, Escherichia coli and bacteriophage MS-2, in a highly weathered tropical soil under unsaturated conditions.
• Characterization of the purified NADPH-flavin reductase of human erythrocytes.
• Effect of Exercise Intensity on Mild Rhythmic-handgrip-exercise-Induced functional Sympatholysis.
• Exponential decay of cytochrome b5 and cytochrome b5 reductase during senescence of erythrocytes: relation to the increased methemoglobin content.
• Extracting fuzzy control rules from experimental human operator data.
• Fate of radioactive thin rats.
• Hepatitis B surface antigen expressed in murine cells.
• Influence of phase transformation on the torsional and bending properties of nickel-titanium rotary endodontic instruments.
• Isolation and identification of alectrol as (+)-orobanchyl acetate, a germination stimulant for root parasitic plants.
• Molecular weight estimation of protoheme ferro-lyase by radiation inactivation.
• Nitrogen deficiency as well as phosphorus deficiency in sorghum promotes the production and exudation of 5-deoxystrigol, the host recognition signal for arbuscular mycorrhizal fungi and root parasites.
• Pancreatic metastasis from renal cell carcinoma.
• Reduction of methemoglobin through flavin at the physiological concentration by NADPH-flavin reductase of human erythrocytes.
• Temperature jump relaxation studies of oxygen binding to isolated chains of hemoglobin.
• Ultrasonic robot eyes using neural networks.
• [Discussion about man and the human body from the viewpoint of medicine and anthropology]
• [Hospital seminar as part of in-service training--introduction of a program]
• [Man: his new clinical image (15). The human body and civilization. (1). A discussion]
• [Pathological and clinical studies of cases of hilar type early lung cancer]