Development of an index for evaluating the effect of resistance training using functional magnetic resonance imaging

2013 Fiscal Year Final Research Report

• Project/Area Number: 23700745
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Sports science
• Research Institution: Doshisha University (2013); Waseda University (2011-2012)
• Principal Investigator: WAKAHARA Taku 同志社大学, スポーツ健康科学部, 助教 (20508288)
• Project Period (FY): 2011 – 2013
• Keywords: 筋肥大 / 筋力トレーニング / 磁気共鳴画像

Research Abstract

The purpose of this study was to examine the availability of transverse relaxation time (T2) in muscle functional magnetic resonance imaging (MRI) as an index for evaluating the training-induced muscle hypertrophy. The T2 and hypertrophy of the quadriceps femoris of young males were evaluated before and after 12 weeks of resistance training. The results showed that, from changes in T2, it may be possible to predict intra-muscle differences and inter-individual variability in training-induced muscle hypertrophy, but the T2 change did not reflect inter-muscle differences.

Research Products

• [Journal Article] Inhomogeneous architectural changes of the quadriceps femoris induced by resistance training. (2013)
  • Author(s): Ema R, Wakahara T, Miyamoto N, Kanehisa, H, Kawakami Y
  • Journal Title: European Journal of Applied Physiology Volume: 113 Pages: 2691-2703
  • DOI: DOI:10.1007/s00421-013-2700-1
  • Peer Reviewed
• [Journal Article] Non-uniform muscle oxygenation despite uniform neuromuscular activity within the vastus lateralis during fatiguing heavy resistance exercise. (2013)
  • Author(s): Miyamoto N, Wakahara T, Ema R, Kawakami Y.
  • Journal Title: Clinical Physiology and Functional Imaging Volume: 33 Pages: 463-469
  • DOI: DOI:10.1111/cpf.12054
  • Peer Reviewed
• [Journal Article] Further potentiation of dynamic muscle strength after resistance training. (2013)
  • Author(s): Miyamoto N, Wakahara T, Ema R, Kawakami Y.
  • Journal Title: Medicine & Science in Sports & Exercise Volume: 45 Pages: 1323-1330
  • DOI: DOI:10.1249/MSS.0b013e3182874c0e
  • Peer Reviewed
• [Presentation] レジスタンス運動中の大腿四頭筋の神経筋活動および筋酸素動態の協働筋間差および同一筋内部位差 (2013)
  • Author(s): 宮本直和、若原卓、江間諒一、川上泰雄
  • Organizer: 第68回日本体力医学会大会
  • Place of Presentation: 日本教育会館学術総合センター(東京都千代田区)
  • Year and Date: 20130921-23
• [Presentation] Changes in the aponeurosis width induced by resistance training : implications for a hypertrophic model of pennate muscle. (2013)
  • Author(s): Wakahara T, Ema R, Miyamoto N, Kawakami Y.
  • Organizer: 18th Annual Congress of the European College of Sport Science
  • Place of Presentation: Institute of Physical Education of Catalonia (Barcelona)
  • Year and Date: 20130626-29
• [Presentation] レジスタンストレーニングによるMR-T2の変化と筋肥大の関連 : 協働筋間差および筋内部位差に着目して (2012)
  • Author(s): 若原卓、江間諒一、宮本直和、川上泰雄
  • Organizer: 第25回日本トレーニング科学会大会
  • Place of Presentation: 立命館大学びわこ・くさつキャンパス(滋賀県草津市)
  • Year and Date: 20121201-02
• [Presentation] 動的筋力に対する高強度短時間のウォームアップ収縮の効果はレジスタンストレーニング後により顕著になる (2012)
  • Author(s): 宮本直和、若原卓、江間諒一、川上泰雄
  • Organizer: 第25回日本トレーニング科学会大会、第25回日本トレーニング科学会大会
  • Place of Presentation: 立命館大学びわこ・くさつキャンパス(滋賀県草津市)
  • Year and Date: 20121201-02
• [Presentation] Intra- and inter-muscle differences in architectural changes of the quadriceps femoris induced by resistance training. (2012)
  • Author(s): Ema R, Wakahara T, Miyamoto N, Kanehisa H, Yanai T, Kawakami Y.
  • Organizer: 17th Annual Congress of the European College of Sport Science
  • Place of Presentation: The Vrije Universiteit Brussel(Bruges)
  • Year and Date: 20120704-07
• [Presentation] 骨格筋の可塑性:個人差と部位差に着目して (2012)
  • Author(s): 若原卓
  • Organizer: 第12回日本超音波骨軟組織学会学術総会
  • Place of Presentation: 富士通関西システムラボラトリ(大阪府大阪市)
  • Year and Date: 2012-10-14