Muscle distribution, power output properties and performance in the weightlifting.

• Project/Area Number: 24500761
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Sports science
• Research Institution: Waseda University
• Principal Investigator: OKADA JUNICHI 早稲田大学, スポーツ科学学術院, 教授 (10277791)
• Research Collaborator: KUBO Keitaro ; HIRAYAMA Kuniaki ; ARAI Kenichi
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
• Keywords: ウエイトリフティング / 筋断面積 / 除脂肪体重 / 競技力 / 筋力 / パワー / 筋厚 / 身体組成 / 競技体力

Outline of Final Research Achievements

The purpose of this study was to clarify a factor about muscle distribution and strength and power output properties which influenced the difference of the performance in the weightlifting. Fifty participants of the high school championships volunteered this study for the muscle thickness and body composition test. Another measurements were executed to get the detail information about muscle distribution, strength and power properties. Nine females and thirteen males top athletes took part in the MRI and several strength/power test. Some of them included Olympian and international level weightlifters. These results showed that elbow extensors, flexors and hamstrings were thicker in males compared with females. Higher muscle strength per unit of muscle cross sectional area in hip extension and knee flexion were observed in top males.