Search Results 1-20 of 19240

  • Analysis of the factors affecting the cardiotocogram trace quality  [in Japanese]

    宮川 和 , 金子 政時 , 山﨑 圭子 , 松岡 あやか

    母性衛生 61(4), 572-578, 2021-01

  • Electrolysis of selectively patterned <i>Vorticella</i> with pneumatic microchambers and electrodes

    NAGAI Moeto , KOHARA Ryoga , SANTRA Tuhin Subhra , SHIBATA Takayuki

    … This permeabilization treatment stopped both spontaneous contraction and cilia movement. …

    Mechanical Engineering Journal 8(1), 20-00254-20-00254, 2021

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  • Effects of Isometric Handgrip Training on Home Blood Pressure Measurements in Hypertensive Patients: A Randomized Crossover Study

    Nemoto Yuki , Satoh Tomonori , Takahashi Takako , Hattori Tomomi , Konno Satoshi , Suzuki Shigefumi , Sakihara Satoru , Munakata Masanori

    … The individualized daily IHG training comprised four sets of 2-min isometric contractions at 30% of the individual's maximum voluntary contraction capacity, including 1 min of rest between sets, for ≥3 days/week. …

    Internal Medicine, 2021

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  • Stimuli-responsive Molecular Springs Based on Single- and Multi-stranded Helical Structures

    Ousaka Naoki , Yashima Eiji

    … A helical structure is one of the most intriguing structural motifs to realize such molecular machines, because of its unique spring-like shape that enables reversible extension and contraction motions. …

    Chemistry Letters 50(2), 320-330, 2021

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  • Gastrointestinal motility modulation by stress is associated with reduced smooth muscle contraction through specific transient receptor potential channel

    AZUMA Yasu-Taka , SUZUKI Sho , NISHIYAMA Kazuhiro , YAMAGUCHI Taro

    … influx is important for smooth muscle contraction, which is responsible for gastrointestinal motility. … EFS-induced contraction was significantly reduced in the ileum of stressed mouse. … Even under the conditions treated with atropine, EFS-induced contraction was significantly reduced in the ileum of stressed mouse. …

    Journal of Veterinary Medical Science, 2021

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  • Cardiac Fibroblasts Play Pathogenic Roles in Idiopathic Restrictive Cardiomyopathy

    Tsuru Hirofumi , Ueno Takayoshi , Miyashita Yohei , Kioka Hidetaka , Asano Yoshihiro , Sawa Yoshiki , Ozono Keiichi , Ishida Hidekazu , Narita Jun , Ishii Ryo , Suginobe Hidehiro , Ishii Yoichiro , Wang Renjie , Kogaki Shigetoyo , Taira Masaki

    … however, the pathological roles of CFs in cardiomyopathy are not fully understood.</p><p><b><i>Methods and Results:</i></b>This study established 4 primary culture lines of CFs from RCM patients and analyzed their cellular physiology, the effects on the contraction and relaxation ability of healthy cardiomyocytes under co-culture with CFs, and RNA sequencing. …

    Circulation Journal, 2021

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  • Basics of gastric contraction  [in Japanese]

    MOCHIKI Erito

    … <p>胃収縮は，明らかに異なった形態を持つ空腹期収縮と食後期収縮に分けられる．空腹期収縮は伝播性強収縮運動であるInterdigestive Migrating Motor Contraction（IMMC）が特徴であり，胃から始まり小腸に伝播する．IMMCは消化管ホルモンであるモチリンによって調節されており，IMMCに同期して血中濃度が変動している．食後期収縮は連続する律動的収縮であり食後6～8時間持続し，空腹期に移行する．胃底部，胃体部は食物 …

    Nippon Shokakibyo Gakkai Zasshi 118(2), 126-132, 2021

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  • Functionally Relevant Threshold of Quadriceps Muscle Strength in Patients with Chronic Obstructive Pulmonary Disease

    Iwakura Masahiro , Wakasa Masahiko , Okura Kazuki , Kawagoshi Atsuyoshi , Sugawara Keiyu , Takahashi Hitomi , Shioya Takanobu

    … <p><b>Objectives: </b>We aimed to identify the quadriceps muscle strength (QMS) thresholds below which exercise capacity is compromised in men with chronic obstructive pulmonary disease (COPD).</p><p><b>Methods: </b>We measured the quadriceps isometric maximum voluntary contraction (QMVC) and calculated the QMVC values normalized to weight (QMVC-BW), height squared (QMVC-H<sup>2</sup>), and body mass index (QMVC-BMI) in 113 patients with COPD. …

    Progress in Rehabilitation Medicine 6(0), n/a, 2021

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  • Motor imagery of ankle plantar flexion at 50% of maximal voluntary contraction increases the maximal torque of ankle plantar flexion  [in Japanese]

    Bunno Yoshibumi , Yoshida Miho , Suzuki Toshiaki , Kitagawa Maho , Tsujimura Fumitaka , Nakatani Yuya , Nishiura Makoto , Hamamoto Hiroki , Higashiyama Marina , Miyake Honoka , Morita Yuki

    <p>50%収縮強度での足関節底屈運動イメージが, 最大足関節底屈トルクに与える影響について検討した。対象は健常成人36名とし, 運動イメージ群とコントロール群の2群に各々18名ずつランダムに振り分けた。椅座位で右股関節と右膝関節を屈曲位, 右足関節底背屈中間位とし, 多用途筋機能評価運動装置Biodex system 3を用いて, 介入前後の最大足関節底屈トルクを比較した。介入につい …

    Japanese Journal of Clinical Neurophysiology 49(1), 1-7, 2021

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  • Evaluation of a Mechanomyogram Sensor Using Piezoelectric Polymer by Muscle Isometric Contraction  [in Japanese]

    Ishizuka Hiroaki , Kashihara Kiyoka , Kanda Takefumi , Wakimoto Shuichi , Oka Hisao

    … In the experiments, we have measured MMG of the biceps brachialis muscle in isometric contraction. …

    IEEJ Transactions on Sensors and Micromachines 141(2), 44-49, 2021

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  • Mechanism of the Long-lasting Potentiating Effect of Distigmine on Urinary Bladder Motility  [in Japanese]

    Obara Keisuke , Tanaka Yoshio

    … The effectiveness of distigmine for underactive bladder treatment has been confirmed by many clinical reports, and this effect is thought to be caused by potentiating urinary bladder smooth muscle contraction due to inhibition of acetylcholine degradation during micturition. … In this review, we present our findings on the mechanism of the potentiating effect of distigmine on isolated guinea pig urinary bladder smooth muscle contraction. …

    YAKUGAKU ZASSHI 141(2), 245-254, 2021

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  • Expectations for a new in vitro test system to predict the risk of the human QT interval prolongation for pharmaceuticals  [in Japanese]

    角田 聡

    <p>2009年に, 薬物のQT間隔延長のリスクに注目した非臨床安全性評価を目的としたICH-S7Bガイドラインが発効された. その後, 心拍を制御するイオンチャネルを発現し, ヒト心筋組織と同様の収縮などの機能を有するヒトiPS/ES細胞からの均質な心筋細胞 (心筋様細胞) を培養する技術が確立され, 商業ベースで容易に入手可能となっている. 日米の研究機関などは, これらの心筋様細 …

    Regulatory Science of Medical Products 11(1), 75-81, 2021

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  • Polymerization and shrinkage stress formation of experimental resin composites doped with nano- <i>vs.</i> micron-sized bioactive glasses

    JÄGER Franziska , MOHN Dirk , ATTIN Thomas , TAUBÖCK Tobias T.

    <p>This study investigated the effect of adding bioactive glass 45S5 (BG) of different particle sizes to dental composite on resin polymerization and shrinkage stress formation. Commercial flowa …

    Dental Materials Journal 40(1), 110-115, 2021

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  • Long‒term postoperative outcomes of the graft inclusion technique for high‒flow arteriovenous fistulas  [in Japanese]

    Nojima Takehisa , Motomiya Yasuki

    <p>過剰血流内シャントへの血流抑制術式であるgraft inclusion technique（GIT）19例の術後長期成績を検討した．GITは4 mm径人工血管を拡張した吻合部に縫着して縫縮し，長さ4 cm前後を血管内に内挿縫合して血流を抑制する術式である．術前血流量は2,200［1,830‒2,751］mL/min，術直後880［737‒974］mL/min，遠隔期856［687 …

    Nihon Toseki Igakkai Zasshi 54(1), 1-8, 2021

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  • High temporal resolution measurement of propagation pattern of myocardial stretching in left ventricle  [in Japanese]

    KUROKAWA Takafumi , NAKAJIMA Hiroyuki , TAKAHASHI Shinichiro , TANAKA Motonao , KANAI Hiroshi , SAIJO Yoshifumi

    <p><b>目的</b>：本研究の目的は多方向からビーム軸上ストレインレート（aSR）計測を行い，左室心筋伸縮伝搬様式を可視化することである．<b>対象と方法</b>：同意を得た成人健常例20例および6例の追試験により検討を行った．スパーススキャンにより高フレームレートを実現して取得したRF信号に位相差トラッキング法を適用し高時間分解能a …

    Choonpa Igaku, 2021

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  • Transcranial direct current stimulation of primary motor cortex modulates post-contraction potentiation

    Ishii Tomoya , Sasada Syusaku , Suzuki Shinya , Komiyama Tomoyoshi

    … this phenomenon is called "post-contraction potentiation" (PCP). … Initially, the participants were instructed to perform successive muscle contraction tasks with different forces: 2% (Test 1); … then 25%, 50%, or 100% (conditioning contraction [CC]); … and again 2% (Test 2) of maximum voluntary contraction (MVC). …

    The Journal of Physical Fitness and Sports Medicine 10(1), 13-23, 2021

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  • A feasibility study of the incidence and symptoms of the throwing yips in college baseball players  [in Japanese]

    Aoyama Toshiyuki , Ae Kazumichi , Souma Hiroto , Miyata Kazuhiro , Kajita Kazuhiro , Nara Takaaki , Kawamura Takashi

    … Moreover, there were various subjective symptoms, such as the issue about co-contraction of the upper limb, sensory function, body ownership, and movement planning. …

    Japanese Journal of Physical Fitness and Sports Medicine 70(1), 91-100, 2021

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  • Role of intra-ventricular vortex in left ventricular ejection elucidated by echo-dynamography  [in Japanese]

    TANAKA Motonao , SAKAMOTO Tsuguya , SAIJO Yoshifumi , KATAHIRA Yoshiaki , SUGAWARA Shigeo , NAKAJIMA Hiroyuki , KUROKAWA Takafumi , KANAI Hiroshi

    <p><b>目的</b>：エコーダイナモグラフィーを使用して分析した左室（LV）の血流動態と壁動態との間の相関関係から，LV駆出前の非常に短い期間である駆出前過渡期（pre-ETP）中の駆出メカニズムと心室内渦の役割とを詳細に解明した．<b>手法</b>：研究には10名の健康なボランティアが参加した．エコーダイナモグラフィーを使用して血流 …

    Choonpa Igaku 48(1), 25-34, 2021

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  • Fundamental research on surface electromyography analysis using discrete wavelet transform—an analysis of the central nervous system factors affecting muscle strength

    Morozumi Kazunori , Ohsugi Hironori , Morishita Katsuyuki , Yokoi Yuka

    … [Participants and Methods] Surface electromyography (EMG) of the right upper bicep muscle in 16 healthy adult males were measured at 10% MVC (maximum voluntary isometric contraction), 30%, 50%, 70%, and 80% to 100% MVC. …

    Journal of Physical Therapy Science 33(1), 63-68, 2021

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  • Evaluation of EMG/MMG/NIRS Layered Sensor in Isometric Ramp Contraction of Forearm

    Kimoto Akira , Minami Koki

    … In an experiment, a simultaneous measurement of EMG, MMG, and NIRS signals at the isometric ramp contraction of the forearm is demonstrated. …

    IEEJ Transactions on Sensors and Micromachines 141(1), 26-31, 2021

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