2010 Fiscal Year Final Research Report

Effects of afferent signals derived from peripheral fatigue on efferent command from central nervous system during exercise

Research Project

Project/Area Number	21800083
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Physical education
Research Institution	Kyushu Kyoritsu University
Principal Investigator	MATSUURA Ryouta Kyushu Kyoritsu University, スポーツ科学部, 助手 (10551278)
Project Period (FY)	2009 – 2010
Keywords	筋疲労 / 非活動筋 / 表面筋電図
Research Abstract	The purpose of this study was to determine the effects of changes in muscle metabolites during leg pedaling exercise on force and surface electromyogram activity during subsequent maximal isometric elbow flexion. Exercise intensity during the leg pedaling exercise or oral administration of sodium bicarbonate 2 hours before the initiation of the leg pedaling exercise did not influence force and surface electromyogram activity during subsequent maximal isometric elbow flexion. Therefore, these results suggest that changes in muscle metabolites in active muscles induced by leg pedaling exercise do not act as afferent signals to modify efferent command from the central nervous system during subsequent maximal voluntary contraction in inactive muscles.