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Tomohiko Fujikawa

Toyama National College of Maritime Technology

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Featured researches published by Tomohiko Fujikawa.

Journal of robotics and mechatronics | 2004

Effects of the Lower Leg Bi-Articular Muscle in Jumping

Toru Oshima; Kiyoshi Toriumi; Tomohiko Fujikawa; Noboru Momose

We studied the effects of the lower leg bi-articular muscle in vertebrates in jumping. We used the proposed Jumping Jack model in computer simulation to analyze the impact of bi-articular muscle on postural jumping stability, energy transition caused by postural change, and the relationship between the ground reaction force and the center of gravity. We made a trial model and measured the jumping posture, ground reaction force, and jumping height to verify simulation results. The bi-articular muscle adjusted the ground reaction force so that the line of action invariably passed near the center of gravity and the conversion of elastic energy to rotational kinetic energy was suppressed, leading to a stable posture after takeoff.

Journal of The Japan Society for Precision Engineering | 1999

Functional Evaluation of Effective Muscle Strength Based on a Muscle Coordinate System Consisted of Bi-articular and Mono-articular Muscles - Contractile Forces and Output Forces of Human Limbs.

Toru Oshima; Tomohiko Fujikawa; Minayori Kumamoto

Transactions of the Japan Society of Mechanical Engineers. C | 1999

Output Force at the Endpoint in Human Upper Extremities and Coordinating Activities of Each Antagonistic Pairs of Muscles.

Tomohiko Fujikawa; Toru Oshima; Minayori Kumamoto; Nobuyasu Yokoi

Journal of The Japan Society for Precision Engineering | 2000

Mechanical Properties of Robot Arm Operated with Muscle Coordinate System Consisted of Bi-articular Muscles and Mono-articular Muscles. Muscle Contractile Forces and Viscoelastic Properties of Robot Arm.

Toru Oshima; Tomohiko Fujikawa; Minayori Kumamoto

Transactions of the Japan Society of Mechanical Engineers. C | 1997

Functional Coordination Control of Pairs of Antagonistic Muscles.

Tomohiko Fujikawa; Toru Oshima; Minayori Kumamoto; Nobuyasu Yokoi

Journal of The Japan Society for Precision Engineering | 2001

Functional Evaluation of Effective Muscular Strength Based on a Muscle Coordinate System Composed of Bi-articular and Mono-articular Muscles. Simplified Measurement Technique of Output Force Distribution.

Toru Oshima; Tomohiko Fujikawa; Minayori Kumamoto

Transactions of the Japan Society of Mechanical Engineers. C | 2005

Jump Mechanism using Coordination Function of Bi-articular Muscle in Knee and Ankle Joint

Toru Oshima; Kiyoshi Toriumi; Tomohiko Fujikawa; Noboru Momose

Journal of The Japan Society for Precision Engineering | 2001

Functional Evaluation of Effective Leg Muscular Strength Based on a Muscle Coordinate System Composed of Bi-articular and Mono-articular Muscles. Estimation of Functional Effective Muscular Strength from Output Force Distribution.

Toru Oshima; Tomohiko Fujikawa; Minayori Kumamoto

Biomechanisms | 1996

COORDINATING FUNCTIONS AMONG ANTAGONISTIC PAIRS OF MONO- AND BI-ARTICULAR MUSCLES IN UPPER EXTREMITY AND MECHANICAL MODEL ANALYSES ON CONTROL PROPERTIES INDUCED BY THE COORDINATING MUSCULAR FUNCTIONS

Tomohiko Fujikawa; Toru Oshima; Minayori Kumamoto; Tomohisa Yamamoto

Journal of The Japan Society for Precision Engineering | 2007

Output Force Distribution Characteristics of Limbs by Coordination of Mono-articular and Bi-articular muscles

Toru Oshima; Kiyoshi Toriumi; Tomohiko Fujikawa; Minayori Kumamoto

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Toru Oshima

Toyama Prefectural University

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Minayori Kumamoto

Toyama Prefectural University

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Noboru Momose

Toyama Prefectural University

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Masanobu Manno

Osaka Electro-Communication University

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Ken'ichi Koyanagi

Toyama Prefectural University

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Takuya Koide

Osaka Electro-Communication University

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Tatsuo Motoyoshi

Kyoto University

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Hiroyuki Masuta

Kanagawa University

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Kei Sawai

Toyama Prefectural University

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Masayoshi Rosaki

Toyama Prefectural University

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