Study on the effect of a traiing program consiting of maximal voluntary cocontractions of trunk muscles

• Project/Area Number: 26350748
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Sports science
• Research Institution: National Institute of Fitness and Sports in Kanoya
• Principal Investigator: KANEHISA Hiroaki 鹿屋体育大学, 理事, 理事 (50161188)
• Co-Investigator(Kenkyū-buntansha): 高井 洋平 鹿屋体育大学, スポーツ生命科学系, 准教授 (20574205) ; 藤田 英二 鹿屋体育大学, スポーツ生命科学系, 准教授 (50506300)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: ブレーシング / トレーニング / 腹腔内圧 / 筋活動水準 / 等尺性筋力 / パワー / 体幹安定性 / 運動生理学 / 生体機能利用 / 腹部深部筋 / 生理学 / リハビリテーション

Outline of Final Research Achievements

The present study aimed to examine (1) the characteristics of intra-abdominal pressure (IAP) and muscular activities during maximal voluntary contractions of trunk muscles (bracing), and (2) the influence of bracing training on abdominal muscle mass, maximal IAP, strength and power generation capability of trunk muscles, and trunk stability against sudden loads. The main findings of the present study are that (1) maximal IAP during abdominal bracing is greater than those during other trunk exercises (trunk flexion and extension, and abdominal drawing), and it is significantly correlated with the activity levels of trunk muscles during the task, and (2) bracing training increases maximal IAP and strength and power generation capability during tasks involving trunk and hip extensions, but it is less effective to improve trunk stability against sudden loads.

Research Products

• [Journal Article] Effect of abdominal bracing training on strength and power of trunk and lower limb muscles (2016)
  • Author(s): Kota Tayashiki, Sumiaki Maeo, Seiji Usui, Naokazu Miyamoto, Hiroaki Kanehisa
  • Journal Title: European Journal of Applied Physiology Volume: 9 Issue: 9 Pages: 1703-1713
  • DOI: 10.1007/s00421-016-3424-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Intra-abdominal pressure and trunk mucular activities during abdominal bracing and hollowing (2016)
  • Author(s): Tayashiki K, Takai Y, Maeo S, Kanehisa H
  • Journal Title: Int J Sport Med Volume: 37 Issue: 02 Pages: 134-143
  • DOI: 10.1055/s-0035-1559771
  • Peer Reviewed / Open Access / Acknowledgement Compliant