Search Results - "Kinugasa, Ryuta"

Development of Consumer-friendly Surface Electromyography System for Muscle Fatigue Detection by Kinugasa, Ryuta, Kubo, Shimpei

“…In this study, a low-cost, wireless, and smartphone-controlled surface electromyography (EMG) system was designed and developed for consumers, and the recorded…”
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Quantification of the in vivo stiffness and natural length of the human plantar aponeurosis during quiet standing using ultrasound elastography by Nozaki, Shuhei, Kinugasa, Ryuta, Yaeshima, Katsutoshi, Hashimoto, Takeshi, Jinzaki, Masahiro, Ogihara, Naomichi

“…This study aimed to identify the stiffness and natural length of the human plantar aponeurosis (PA) during quiet standing using ultrasound shear wave…”
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Activation of plantar flexor muscles is constrained by multiple muscle synergies rather than joint torques by Suzuki, Takahito, Kinugasa, Ryuta, Fukashiro, Senshi

“…Behavioral evidence has suggested that a small number of muscle synergies may be responsible for activating a variety of muscles. Nevertheless, such…”
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Influence of intramuscular fiber orientation on the Achilles tendon curvature using three-dimensional finite element modeling of contracting skeletal muscle by Kinugasa, Ryuta, Yamamura, Naoto, Sinha, Shantanu, Takagi, Shu

“…Abstract Tendon curvature plays a key role in mechanical gain (amplifying the joint excursion relative to fiber length change) during joint motion, but the…”
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Age-related differences in strain rate tensor of the medial gastrocnemius muscle during passive plantarflexion and active isometric contraction using velocity encoded MR imaging: Potential index of lateral force transmission by Sinha, Usha, Malis, Vadim, Csapo, Robert, Moghadasi, Ali, Kinugasa, Ryuta, Sinha, Shantanu

“…Purpose The strain rate (SR) tensor measures the principal directions and magnitude of the instantaneous deformation; this study aims to track age‐related…”
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Influence of foot strike pattern on co‐contraction around the ankle and oxygen uptake during running at 19 km/h by Kubo, Shimpei, Yaeshima, Katsutoshi, Suzuki, Takahito, Daigo, Eiji, Kitaoka, Yu, Kinugasa, Ryuta

“…This study investigated the coactivation of plantar flexor and dorsiflexor muscles and oxygen uptake during running with forefoot and rearfoot strikes at 15…”
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Role of the Extracellular Matrix in Loss of Muscle Force With Age and Unloading Using Magnetic Resonance Imaging, Biochemical Analysis, and Computational Models by Sinha, Usha, Malis, Vadim, Chen, Jiun-Shyan, Csapo, Robert, Kinugasa, Ryuta, Narici, Marco Vincenzo, Sinha, Shantanu

“…The focus of this review is the application of advanced MRI to study the effect of aging and disuse related remodeling of the extracellular matrix (ECM) on…”
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Biomechanical Gain in Joint Excursion from the Curvature of the Achilles Tendon: Role of the Geometrical Arrangement of Inflection Point, Center of Rotation, and Calcaneus by Kinugasa, Ryuta, Yamamura, Naoto, Takagi, Shu, Sinha, Shantanu

“…The dorsal movement of the Achilles tendon during ankle rotation is restricted by anatomical obstructions. Previously, we demonstrated that the anatomical…”
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A Multi-modality Approach Towards Elucidation of the Mechanism for Human Achilles Tendon Bending During Passive Ankle Rotation by Kinugasa, Ryuta, Taniguchi, Keigo, Yamamura, Naoto, Fujimiya, Mineko, Katayose, Masaki, Takagi, Shu, Edgerton, V. Reggie, Sinha, Shantanu

“…The in vitro unconstrained Achilles tendon is nearly straight, while in vivo experiments reveal that the proximal region of the Achilles tendon, adjacent to…”
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Dynamics of Quadriceps Muscles during Isometric Contractions: Velocity-Encoded Phase Contrast MRI Study by Oda, Toshiaki, Malis, Vadim, Finni, Taija, Kinugasa, Ryuta, Sinha, Shantanu

“…To quantify the spatial heterogeneity of displacement during voluntary isometric contraction within and between the different compartments of the quadriceps…”
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Effects of Four-Week Kayak Training on Three-Dimensional Paddling Kinetics, Body Kinematics, and Electromyography Activity in a Novice Paddler: A Case Study by Kinugasa, Ryuta, Kubo, Shimpei, Endo, Keiko

“…From a biomechanical viewpoint, no longitudinal quantitative studies have been conducted on inexperienced paddlers. The present study aimed to investigate…”
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Computer-controlled, MR-compatible foot-pedal device to study dynamics of the muscle tendon complex under isometric, concentric, and eccentric contractions by Sinha, Shantanu, Shin, David D., Hodgson, John A., Kinugasa, Ryuta, Edgerton, V. Reggie

“…Purpose: To design a computer‐controlled, magnetic resonance (MR)‐compatible foot pedal device that allows in vivo mapping of changes in morphology and in…”
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Asymmetric deformation of contracting human gastrocnemius muscle by Kinugasa, Ryuta, Hodgson, John A, Edgerton, V Reggie, Sinha, Shantanu

“…Muscle fiber deformation is related to its cellular structure, as well as its architectural arrangement within the musculoskeletal system. While playing an…”
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Muscle activation and its distribution within human triceps surae muscles by Kinugasa, Ryuta, Kawakami, Yasuo, Fukunaga, Tetsuo

“…1 Research Center of Sports Sciences, Musashino University, Tokyo; and 2 School of Sport Sciences, Waseda University, Saitama, Japan Submitted 13 October 2004…”
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Phase-contrast MRI reveals mechanical behavior of superficial and deep aponeuroses in human medial gastrocnemius during isometric contraction by Kinugasa, Ryuta, Shin, Dongsuk, Yamauchi, Junichiro, Mishra, Chandan, Hodgson, John A, Edgerton, V. Reggie, Sinha, Shantanu

“…1 Muscle Imaging and Modeling Laboratory, Department of Radiology, University of California, San Diego; 2 Department of Biomedical Engineering, 3 Department of…”
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Neuromuscular activation of triceps surae using muscle functional MRI and EMG by KINUGASA, Ryuta, AKIMA, Hiroshi

“…The aim of the present study was to clarify the neuromuscular activation patterns among individual triceps surae (TS) muscles during a repetitive…”
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Effect of tendon stiffness on the generated force at the Achilles tendon - 3D finite element simulation of a human triceps surae muscle during isometric contraction by Naoto YAMAMURA, Jose Luis ALVES, Toshiaki ODA, Ryuta KINUGASA, Shu TAKAGI

“…Skeletal muscles develop forces as a result of muscle activation for human locomotion. To know the force generating ability of skeletal muscles is important to…”
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Interaponeurosis shear strain modulates behavior of myotendinous junction of the human triceps surae by Kinugasa, Ryuta, Oda, Toshiaki, Komatsu, Toshihiko, Edgerton, V. Reggie, Sinha, Shantanu

“…Muscle fascicles insert into a sheet‐like aponeurosis. Adjacent aponeuroses are structurally in contact with each other, and ultimately merge into a common…”
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Mapping activation levels of skeletal muscle in healthy volunteers: An MRI study by Kinugasa, Ryuta, Kawakami, Yasuo, Fukunaga, Tetsuo

“…Purpose To use muscle functional MRI (mfMRI) to compare activation levels within and among triceps surae (TS) muscles. Materials and Methods Seven healthy…”
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Uncover the identity of obstruction on the Achilles tendon by Kinugasa, Ryuta, Hodgson, John A, Edgerton, V Reggie, Sinha, Shantanu

“…Introduction A mechanism must operate directly on the Achilles tendon which in effect introduces an obstruction to the outward movement of the Achilles tendon,…”
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