研究者詳細 - 谷口　圭吾

論文 - 谷口　圭吾

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持続的な膝伸展運動が大腿四頭筋の安静時筋弾性と血流動態に及ぼす影響

山形一真, 小出所大樹, 中尾学人, 金谷耕平, 谷口圭吾

日本整形外科超音波学会学術集会プログラム・抄録集 ( 日本整形外科超音波学会 ) 34回 160 - 160 2023年07月

慢性足関節不安定症における足関節底屈筋群の静的筋弾性の特性

小林匠, 小出所大樹, 谷口圭吾, 金谷耕平

日本整形外科超音波学会学術集会プログラム・抄録集 ( 日本整形外科超音波学会 ) 34回 154 - 154 2023年07月

大腿四頭筋セッティングの収縮強度漸増課題における筋厚と筋弾性の関係

河合誠, 小出所大樹, 時田諒, 山形一真, 青木昌弘, 寺本篤史, 金谷耕平, 片寄正樹, 谷口圭吾

日本整形外科超音波学会学術集会プログラム・抄録集 ( 日本整形外科超音波学会 ) 34回 152 - 152 2023年07月

屈曲拘縮膝におけるハムストリングスの弾性画像評価の妥当性

中尾学人, 谷口圭吾, 小出所大樹, 山形一真, 渡邉耕太, 大崎雄樹, 片寄正樹, 金谷耕平

日本整形外科超音波学会学術集会プログラム・抄録集 ( 日本整形外科超音波学会 ) 34回 135 - 135 2023年07月

Quantifying the shear modulus of the adductor longus muscle during hip joint motion using shear wave elastography.

Takuya Kato, Keigo Taniguchi, Taiki Kodesho, Gakuto Nakao, Yu Yokoyama, Yuhei Saito, Masaki Katayose

Scientific reports 13 ( 1 ) 9510 - 9510 2023年06月 [国際誌]

The present study aims to assess the effect of the hip flexion angle on the shear modulus of the adductor longus (AL) muscle associated with passive hip abduction and rotation. Sixteen men participated in the study. For the hip abduction task, the hip flexion angles used were - 20, 0, 20, 40, 60, and 80°, and the hip abduction angles were 0, 10, 20, 30, and 40°. For the hip rotation task, the hip flexion angles used were - 20, 0, 20, 40, 60, and 80°, hip abduction angles were 0 and 40°, and hip rotation angles were 20° internal rotation, 0° rotation, and 20° external rotation. The shear modulus at 20° extension was significantly higher than that at 80° flexion for the 10, 20, 30 and 40° hip abduction (i.e., P < 0.05). The shear modulus at 20° internal rotation and 20° extension was significantly higher than that at 0° rotation and 20° external rotation, regardless of the hip abduction angle (i.e., P < 0.05). The mechanical stress of the AL muscle associated with hip abduction was higher in the extended position. Furthermore, the mechanical stress could increase with internal rotation only at the hip-extended position.

DOI PubMed

Relationship between shear elastic modulus and passive muscle force in human hamstring muscles using a Thiel soft-embalmed cadaver.

Gakuto Nakao, Taiki Kodesho, Takuya Kato, Yu Yokoyama, Yuhei Saito, Yuki Ohsaki, Kota Watanabe, Masaki Katayose, Keigo Taniguchi

Journal of medical ultrasonics (2001) 50 ( 3 ) 275 - 283 2023年05月 [国内誌]

PURPOSE: Assessing muscle flexibility and architecture is important for hamstring strain injury (HSI) prevention. We investigated the relationship between shear modulus and passive force in hamstring muscles at different sites and the effect of muscle architecture on the slope of the shear modulus-passive force using shear wave elastography (SWE). METHODS: The biceps femoris long head (BFlh), semitendinosus (ST), and semimembranosus (SM) muscles were dissected from nine Thiel-embalmed cadavers and fixed to a custom-made mechanical testing machine. Calibrated weights (0-1800 g) were applied gradually in 150-g increments. The shear modulus and anatomical cross-sectional area (ACSA) were measured at proximal, central, and distal points using SWE. The muscle mass and length were measured before the loading test. The shear modulus-passive load relationship of each tested muscle region was analyzed by fitting a least-squares regression line. The increase in shear modulus slope per unit load was calculated and compared between the muscles before and after normalization by the muscle mass, length, and ACSA. RESULTS: The shear modulus and passive force for all hamstring muscles in each region showed a statistically significant linear correlation. Furthermore, the increase in shear modulus slope was greater for BFlh and ST than for SM (P < 0.05), but after normalization by the muscle length and ACSA, there were no significant differences among the muscles. CONCLUSION: The local mechanical properties of individual hamstring muscles can be indirectly estimated using SWE, and the slope of increase in shear modulus reflects characteristics of the muscle architecture.

DOI PubMed

運動器リハビリ領域におけるSUPERSONIC MACH 30の応用可能性

谷口圭吾, 小出所大樹, 石井宏, 中尾学人, 山形一真, 渡邉耕太, 片寄正樹

映像情報Medical ( 産業開発機構(株) ) 55 ( 6 ) 97 - 102 2023年05月

運動器リハビリ領域におけるSUPERSONIC MACH 30の応用可能性

谷口圭吾, 小出所大樹, 石井宏, 中尾学人, 山形一真, 渡邉耕太, 片寄正樹

映像情報Medical ( 産業開発機構(株) ) 55 ( 6 ) 97 - 102 2023年05月

足関節角度および静的ストレッチングが腓腹筋内側頭の弾性と粘性に及ぼす影響

小出所大樹, 山形一真, 中尾学人, 山越芳樹, 片寄正樹, 谷口圭吾

超音波医学 ( (公社)日本超音波医学会 ) 50 ( Suppl. ) S699 - S699 2023年04月

大腿四頭筋セッティング時の膝窩圧迫力と大腿四頭筋弾性の関係

小出所大樹, 河合誠, 金谷耕平, 片寄正樹, 谷口圭吾

日本整形外科超音波学会会誌 ( 日本整形外科超音波学会 ) 33 ( 1 ) 72 - 79 2023年03月

【目的】大腿四頭筋セッティング時の運動強度と筋弾性率の関係を明らかにすることである.【方法】若年健常男性10名を対象に,長座位で大腿四頭筋セッティングを膝窩圧迫力を基準に0%から25%ずつ漸増させ100%まで実施した.筋弾性率(kPa)は超音波せん断波エラストグラフィにて測定した.【結果】弾性率は強度と筋の交互作用を認めた(P<0.001).多重比較の結果,安静時および50%時で筋間に有意な差はないが,25%で中間広筋(16.6±4.0)が大腿直筋(8.9±4.4)に比して高い弾性率であった.また,75%,100%で内側広筋が大腿直筋に比して高い弾性率であった(100%:60.2±17.2vs35.4±15.4,p<0.05).【考察】収縮時弾性は活動張力を反映するため,大腿四頭筋セッティングは低強度において中間広筋が,高強度では内側広筋が大腿四頭筋の発揮筋力に最も貢献している可能性がある.(著者抄録)

Effects of superficial tissue and intermuscular connections on rectus femoris muscle shear modulus heterogeneity.

Taiki Kodesho, Takuya Kato, Gakuto Nakao, Yu Yokoyama, Yuhei Saito, Kota Watanabe, Yuki Ohsaki, Masaki Katayose, Keigo Taniguchi

Journal of ultrasound 2023年02月 [国際誌]

INTRODUCTION: Intramuscular heterogeneity exists in the shear modulus of the rectus femoris (RF) muscle. However, the underlying heterogeneity mechanisms are not entirely understood. Previous research has reported that detachment of superficial tissues reduces the shear modulus by 50%. The aim of this study was to examine the effects of the skin, deep fascia, and intermuscular connections on the shear modulus of the RF at multiple sites. MATERIALS AND METHODS: Eleven donors were fixed using the Thiel method. Measurements were performed at 0°, 60°, and 120° knee flexion in a neutral hip position. Tissue processing was performed under four conditions: superficial tissue (CONT), skin off (SKIN), deep fascia detachment (FASC), and intermuscular connections detachment (ALL). The shear modulus at the proximal, central, and distal regions were measured using ultrasound shear wave elastography. The study was approved by the Sapporo Medical University Ethical Committee. RESULTS: Three-way ANOVA revealed no significant interaction between treatment, site, and angle (P = 0.156), treatment and angle (P = 0.067), or site and angle (P = 0.441). There was a significant effect of treatment (P < 0.001), site (P = 0.010), and angle (P < 0.001) and interaction between treatment and site (P < 0.001). The proximal shear modulus was greater than the central for CONT. There were no significant differences between the measurement sites for SKIN. The distal shear modulus was greater than the proximal for FASC. The distal shear modulus was also greater than the proximal and central for ALL. CONCLUSIONS: Intramuscular regional differences that influence superficial tissue and intermuscular connections of RF elasticity heterogeneity were observed.

DOI PubMed

アキレス腱術後感染により皮膚・腱欠損を生じた症例に運動器エコーを用いた動態評価と理学療法を行い、スポーツ復帰した一例

河合誠, 小出所大樹, 山田由奈, 片寄正樹, 渡邉耕太, 千葉充将, 村橋靖崇, 寺本篤史, 山下敏彦, 谷口圭吾

北海道整形災害外科学会雑誌 ( 北海道整形災害外科学会 ) 65 ( 142nd suppl ) 85 - 85 2023年

超音波せん断波エラストグラフィによる外腹斜筋の活動評価の妥当性検証

小澤和祥, 中尾学人, 山形一真, 石山輝希, 足立梨沙, 谷口圭吾

基礎理学療法学 ( 一般社団法人日本基礎理学療法学会 ) 26 ( Supplement ) S85-1 - S85-1 2023年

DOI

アキレス腱術後感染により皮膚・腱欠損を生じた症例に運動器エコーを用いた動態評価と理学療法を行い、スポーツ復帰した一例

河合誠, 小出所大樹, 山田由奈, 片寄正樹, 渡邉耕太, 千葉充将, 村橋靖崇, 寺本篤史, 山下敏彦, 谷口圭吾

北海道整形災害外科学会雑誌 ( 北海道整形災害外科学会 ) 65 ( 142nd suppl ) 85 - 85 2023年

異なる股関節屈曲角度における股関節外転ストレッチングが長内転筋の筋スティフネスに与える影響