Force output based on sense of effort in non-fatigued limb after muscle fatigue

2014 Fiscal Year Final Research Report

• Project/Area Number: 25871146
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Developmental mechanisms and the body works; Sports science
• Research Institution: Joetsu University of Education
• Principal Investigator: MATSUURA Ryouta 上越教育大学, 学校教育研究科(研究院), 准教授 (10551278)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 筋疲労 / 努力感 / 運動誘発電位

Outline of Final Research Achievements

The purpose of this study was to examine relationship between changes in motor cortical excitability in non-fatigued muscle after muscle fatigue and force output based on sense of effort in the non-fatigued muscle. At rest, corticospinal excitability in non-fatigued lower limb changed after muscle fatigue elicited by unilateral handgrip. In contrast, corticospinal excitability in the non-fatigued lower limb did not change when the non-fatigued muscle was contracting after muscle fatigue by unilateral handgrip. However, when the non-fatigued muscle was active, corticospinal excitability was positively correlated with force output based on fixed sense of effort. Therefore, it is suggested that input-output properties when contracting muscle determine force output based on fixed sense of effort in non-fatigued lower limb after muscle fatigue elicited by unilateral upper limb.

Free Research Field

運動生理学