Evaluation of quadriceps femoris including vastus intermedius during exercises

2014 Fiscal Year Final Research Report

• Project/Area Number: 23300239
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Sports science
• Research Institution: Nagoya University
• Principal Investigator: AKIMA Hiroshi 名古屋大学, 総合保健体育科学センター, 教授 (40292841)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 大腿四頭筋 / 中間広筋 / 表面筋電図 / 膝伸展運動 / 超音波エコー / 神経筋活動

Outline of Final Research Achievements

The purpose of this study was to assess functional and anatomical properties of quadriceps femoris including vastus intermedius (VI) during knee extension tasks. Neuromuscular activation pattern of VI was similar to other vasti muscles during low-intensity of sustained contraction for 1-h. On the other hand, neuromuscular activation of VI was significantly higher during flexed knee joint angles during dynamic fatiguing contractions. This unique neuromuscular activation patter was found during dynamic knee extensions at 60% or higher one-repetition maximum loads. We concluded that vastus intermedius was higher contribution during flexed knee joint angles.

Free Research Field

健康・スポーツ科学