Search Results 1-20 of 947

  • Relationships between craniofacial morphology and masticatory muscle activity during isometric contraction at different interocclusal distances

    Takeuchi-Sato Tamiyo , Arima Taro , Mew Michael , Svensson Peter

    Archives of Oral Biology (98), 52-60, 2020-02-04

  • Relationship between exercise and delayed onset muscle soreness in children  [in Japanese]

    蛭間 栄介

    帝京大学スポーツ医療研究 12, 27-30, 2020-02

  • Association between Muscle Oxygenation and Vascular Occlusion Determined by Near-infrared Spectroscopy in the Tibialis Anterior Muscle

    TANADA Yuuji , SUMII Hiroshi

    … <p>Many previous studies on near-infrared spectroscopy (NIRS) based evaluation of muscle oxygenation, have assessed the association of muscle oxygenation with muscle fatigue and exercise tolerance. … To examine the changes in oxyhemoglobin (O<sub>2</sub>Hb) and deoxyhemoglobin (HHb) levels, some studies performed occlusion of arterial blood flow in the upper arm and measured the biarticular forearm muscle oxygenation; …

    Hiroshima Journal of Medical Sciences 69(1), 15-22, 2020

    IR  J-STAGE 

  • Effects of chemerin-9 on contractility of isolated pulmonary artery from pulmonary artery hypertensive rat  [in Japanese]

    Omori Ayaho , Kodama Tomoko , Goshima Makoto , Kakuda Chiharu , Okada Muneyoshi , Yamawaki Hideyuki

    Isometric contraction of isolated PA from MCT-injected (MCT) rat was measured. … Chemerin-9-induced contraction was significantly enhanced in PA from MCT rat compared with vehicle-injected control (Cont) rat. … CMKLR1 was localized in endothelium of PA from Cont rat, while it was localized in smooth muscle of PA from MCT rat. …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society 93(0), 2-O-062, 2020


  • Role of CPI-17 on uterine smooth muscle contraction depending on pregnancy stage  [in Japanese]

    Shibasaki Io , Yang Qunhui , Kaji Noriyuki , Hori Masatoshi

    … Smooth muscle contraction is regulated by the balance between MLC kinase and MLC phosphatase (MLCP). … Phosphorylated CPI-17 can inhibit MLCP resulted in induce contraction. … <b>Aim </b>This study was planned to elucidate the effect of CPI-17 on contraction in myometrium from non-pregnant and pregnant mice. … Isometric force stimulated with high concentration (65.4 mM) of KCl (high K), oxytocin (Oxy; …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society 93(0), 1-P-062, 2020


  • Effect on contractile response due to carbachol and bradykinin stimulation in the rat inflammatory colon.  [in Japanese]

    Nobe Hiromi

    … <p>Inflammatory bowel disease is a group of chronic disorders characterized by damaged smooth muscle tissues in the digestive tract. … These tissues were placed in physiological organ bath system and then, isometric force were assessed. … The presence of nifedipine markedly inhibited the CCh-induced contraction. …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society 93(0), 1-P-057, 2020


  • N-terminal fragments of titin in urine as a biomarker for eccentric exercise-induced muscle damage

    Yamaguchi Shota , Suzuki Katsuhiko , Kanda Kazue , Okada Junichi

    … <p>N-terminal fragments of titin in urine have been proposed as a noninvasive marker of muscle damage, but there are no data on its time course after 96 h. … The aims of this study were to investigate the time course of urinary titin N-terminal fragment (UTF) following eccentric exercise and the subsequent correlations between UTF and other muscle damage indices. …

    The Journal of Physical Fitness and Sports Medicine 9(1), 21-29, 2020


  • Optimal KAATSU pressure increases muscle activities during low-load exercise in an elderly female frail patient receiving transcatheter aortic valve implantation

    H Ishizaka , T Yasuda , Y Sato , H Fukuda , T Inoue , T Nakajima , A Uematsu , R Takahashi , H Ogawa , I Shibasaki , T Sawaguchi , T Nasuno , S Toyoda , S Yamaguchi

    … <p>[Purpose] KAATSU training is a method that increases muscle activity even at low loads. … We recorded muscle strength of maximum isometric voluntary contraction (MVC) measured with a hand-held dynamometer before the start of each condition. … A rate of perceived exertion (RPE) after each set was measured by the Borg Scale.</p><p>[Results] There was no change in muscle strength during MVC before each condition. …

    International Journal of KAATSU Training Research 15(1), 5-8, 2019


  • Corticomuscular synchronization in tibialis anterial muscle and lateral head of gastrocnemius during isometric contraction of lower limb influenced by contraction force and time course  [in Japanese]

    山下 賢斗 , 牛島 武 , 伊賀崎 伴彦

    <p>等尺性収縮運動時の主動筋となる前脛骨筋における脳波と筋電図のコヒーレンスは,運動強度の増加に伴いβ帯域(15~35Hz)からγ帯域(35~60Hz)へと遷移することが報告されている.一方,同運動時の拮抗筋に当たるヒラメ筋においては,運動強度に関係なくβ帯域に現れることが報告されている.しかし,運動強度変化,時間経過によるコヒーレンスの変化は検討されていない.本研究では,下肢等尺性 …

    Record of Joint Conference of Electrical and Electronics Engineers in Kyushu 2019(0), 84-84, 2019


  • Evaluation of muscle contraction by electromyography and sonography: For early diagnosis and prevention of sarcopenia  [in Japanese]

    KATAYAMA Masafumi , TAKANO Yoshio

    <p>近年,主に加齢による筋委縮が原因となって,日常生活に支障が生ずるサルコペニアと呼ばれる症状が問題になっている。本研究では簡易な測定項目でのスクリーニングを目的として,大腿直筋の表面筋電図と筋の超音波像による計測の精度を検証した後,膝伸展時に一定の負荷をかけた時の変化を観察した。大腿直筋のほか,比較対象として外側広筋および内側広筋についても観察した。3筋の筋腹皮膚上にて,安静時,弱 …

    Japanese Journal of Medical Technology 68(4), 637-643, 2019

    J-STAGE  Ichushi Web 

  • Eukaryotic elongation factor 2 kinase inhibitor, A484954 potentiates β-adrenergic receptor agonist-induced acute decrease in diastolic blood pressure in rats

    KODAMA Tomoko , OKADA Muneyoshi , YAMAWAKI Hideyuki

    … channel and activating β<sub>2</sub>-adrenergic receptor in smooth muscle of rat isolated mesenteric artery, which contributes to prevent noradrenaline-induced acute increase in blood pressure (BP). … We also examined whether A484954 affects contraction and heart rate (HR) of isolated heart. … Isometric contraction and HR in rat isolated atria were also measured pharmacologically. …

    Journal of Veterinary Medical Science 81(10), 1509-1514, 2019


  • Efficacies of ultrasound and a handheld dynamometer to predict one-repetition maximum

    Nakamura Masatoshi , Sutoh Shigeki , Kiyono Ryosuke , Sato Shigeru , Yahata Kaoru , Hiraizumi Kakeru , Morishita Shinichiro

    … In this study, we aimed to investigate whether one-repetition maximum of the knee extensor could be predicted more accurately with a combination of muscle strength, measured using a handheld dynamometer, muscle thickness, and thigh circumference. …

    Journal of Physical Therapy Science 31(10), 790-794, 2019


  • Feedback protocol of 'fading knowledge of results' is effective for prolonging motor learning retention

    Aoyagi Yoichiro , Ohnishi Eri , Yamamoto Yoshinori , Kado Naoki , Suzuki Toshiaki , Ohnishi Hitoshi , Hokimoto Nozomi , Fukaya Naomi

    … Participants were tasked with exerting 60% of their maximum voluntary contraction of their left shoulder flexion muscle in an isometric exercise. …

    Journal of Physical Therapy Science 31(8), 687-691, 2019


  • Electromyographic study during isometric shoulder external rotation: a comparison between self-exercise using an isometric cuff exerciser and manual self-exercise  [in Japanese]

    Ueno Miyuki , Hara Masafumi , Kudo Yu , Aiba Yuki , Nishi Akane , Horiguchi Ayako

    … る.</p><p>方法:各エクササイズの等尺性肩外旋運動における棘下筋,三角筋前部中部および後部,上腕二頭筋,上腕三頭筋,前鋸筋,広背筋の筋活動を表面筋電計で計測し,%MVC (MVC, maximum voluntary contraction)を算出した.</p><p>結果:腱板訓練器を用いたセルフエクササイズでは,棘下筋の筋活動を示す%MVCが他筋に比べて有意に高く,徒手抵抗および理学療法士によるエクササイズと比べて棘下筋の活動 …

    The Journal of the Japanese Clinical Orthopaedic Association 44(1), 41-47, 2019


  • Effect of an isometric cuff training machine developed at our hospital on shoulder joint range of motion  [in Japanese]

    Kudo Yu , Hara Masafumi , Fujisawa Motoyuki , Aiba Yuki , Ueno Miyuki , Nishi Akane , Horiguchi Ayako

    … 囲筋の筋活動を検討した.</p><p>方法:可動域は,訓練前後に外転位での内旋角度,複合外転角度と水平内転角度を測定した.筋活動は,筋電図を用いて三角筋後部と棘下筋の%MVC(MVC, maximum voluntary contraction)を算出した.</p><p>結果:訓練前後で可動域の変化は認められなかった.筋活動は,三角筋に比べ棘下筋が有意に高値を示した.</p><p>考察:腱板訓練前後での可動域の拡大には,収縮持 …

    The Journal of the Japanese Clinical Orthopaedic Association 44(1), 49-53, 2019


  • T<sub>2</sub> Distribution in the Forearm Muscles and the T<sub>2</sub> Threshold for Defining Activated Muscle

    Takamori Masayoshi , Akiyama Sumikazu , Yoshida Kazuya , Wakashin Hidefumi , Seo Yoshiteru

    … values for 10 forearm muscles were obtained in the resting state and after isometric wrist flexion exercise with 5%, 15%, and 25% of the maximum voluntary contraction (MVC). …

    Magnetic Resonance in Medical Sciences 18(3), 184-193, 2019


  • Effects of antagonistic muscle contraction exercises on ankle joint range of motion

    Nagano Katsuhito , Uoya Sachiyo , Nagano Yumi

    … This study aimed to investigate whether antagonistic muscle contraction exercises alone had an effect in expanding the joint range of motion. … [Participants and Methods] Participants included 50 healthy males and females (aged 21.0 ± 3.1 years) who were each randomly assigned to one of four groups that performed either active, resistance, phasic, or isometric exercises or a control group that performed no exercise. …

    Journal of Physical Therapy Science 31(7), 526-529, 2019


  • Effect of Equol on Vasocontractions in Rat Carotid Arteries Treated with High Insulin

    Matsumoto Takayuki , Takayanagi Keisuke , Kobayashi Shota , Kojima Mihoka , Taguchi Kumiko , Kobayashi Tsuneo

    … Vascular isometric forces were measured by the organ bath technique. … receptor agonist (BW723C86) did not induce contraction; … following precontraction by a thromboxane analog, it induced contraction but not relaxation. … In the endothelium-denuded preparations, 5-HT-induced contraction was augmented with insulin treatment (<i>vs.</i> …

    Biological and Pharmaceutical Bulletin 42(6), 1048-1053, 2019

    J-STAGE  Ichushi Web 

  • Measurements of Isometric Strength and Electromyography of Elbow Flexors under Active and Passive Conditions

    Higa Masaru , Araki Nozomu , Nakatani Shintaro , Toji Hideki

    … <p>The aim of this study was to measure maximum isometric force under two different conditions: active and passive conditions. … The isometric maximum force and the EMGs of the elbow flexors were measured under two contrasting conditions. … The first was a standard isometric measurement in which a subject actively pulled a fixed wire using their elbow flexor at 100% effort (active). …

    Advanced Biomedical Engineering 8(0), 124-129, 2019


  • Investigation of joint angle specificity in low-load hip abductor isometric training: a randomized controlled trial

    Tanaka Hiroki , Ikezoe Tome , Tateuchi Hiroshige , Nakamura Masatoshi , Umehara Jun , Fujita Kosuke , Araki Kojiro , Yanase Ko , Ichihashi Noriaki

    … <p>Recently, it was suggested that the angle at which the maximum muscle strength improves depends on the load of training. … This is inconsistent with the principle of specificity of joint angle, which indicates that the improvement of muscle strength is obtained when a similar joint angle as the trained angle is used. … The present study investigated the angle at which maximum muscle strength increases with low-load hip abductor isometric training. …

    The Journal of Physical Fitness and Sports Medicine 8(2), 107-111, 2019


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