Motor Control & Biomechanics Lab.

Shuji Suzuki, Ph.D
Faculty of Human Sciences
Graduate School of Human Sciences
Dept. of Health Science and Welfare
Waseda University

 Human motion is a great variety of movements. It occurs as the consequence of the interaction between muscles and the external forces imposed by surrounding on the system. Our interest is to examine the functional mechanisms of movements, especially related to sport activity. For this purpose, we study several factors between a biological system and its surroundings, from the fields of neurophysiology, kinematics and kinetics.
 Our present studies are addressing the following issues: 1) the relationships between EMG activity, limb movement and ground reaction forces as subjects perform running, jumping, throwing and bicycling exercises. Recently, we concentrate to study about Beginning Movement Load Training which was named by Y. Koyama in 1994.

Keywords:Kinesiology, motor control, biomechanics, locomotion, Beginning Movement Load Training

Birth date and place:
September 1, 1946 in Kagawa, Japan

Educational Background:
Waseda University, Tokyo, Japan B.Ed. 1970
University of Washington, Seattle,Washington, USA M.S. 1975
Chiba University, Chiba, Japan Ph.D. 1982

Employment Record:
Department of Physiology, Kyorin University School of Medicine,Tokyo
Research Associate ( 1980.2.1 - 1985.3.31 )
Assistant Professor ( 1985.4.1 - 1987.3.31 )

Department of Sports Sciences, School of Human Sciences, Waseda University, Tokorozawa
Assistant Professor ( 1987.4.1 - 1991.3.31 )
Associate Professor ( 1991.4.1 - 1996.3.31 )
Professor ( 1996.4.1 - 2003.3.31 )

Department of Health Science and Social Welfare, School of Human Sciences, Waseda University, Tokorozawa
Professor (2003.4.1 to Date )

Department of Biomedical Engineering The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA
Research Fellow ( 1995.9.1 - 1996.8.31 )

Suzuki, S., Hutton, R.S. Postcontractile motoneuronal discharge produced by muscle afferent activation, Med. Sci. Sports, 8:258-264, 1976

Uchino, Y., Suzuki, S., Miyazawa, T., Watanabe, S. Synaptic linkage between horizontal canal nerve and bilateral medial rectus motoneurons in the cat, Integral Control Functions of the Brain II:194-196, 1979

Uchino, Y., Suzuki, S., Miyazawa, T., Watanabe, S. Horizontal canal input to cat extraocular motoneurons, Brain Res., 177:231-240, 1979
Hutton, R.S., Suzuki, S. Postcontraction discharge of motor neurons in spinal animals, Exp. Neurol., 64:567-578, 1979

Uchino, Y., Hirai, N., Suzuki, S., Watanabe, S. Axonal branching in the trochlear and oculomotor nuclei of single vestibular neurons activated from the posterior semicircular canal nerve in the cat, Neuroscience Letters, 18:283-288, 1980

Uchino, Y., Suzuki, S., Watanabe, S. Vertical semicircular canal input to cat extraocular motoneurons, Exp. Brain Res., 41:45-53, 1980

Uchino, Y., Hirai, N., Suzuki, S., Watanabe, S. Properties of secondary vestibular neurons fired by stimulation of ampullary nerve of the vertical, anterior or posterior semicircular canals in the cat, Brain Res., 223:273-286,1981

Suzuki, S., Watanabe, S., Homma, S. EMG activity and kinematics of human cycling movements at different constant velocities, Brain Res., 240:245-258, 1982

Uchino, Y., Hirai, N., Suzuki, S. Branching pattern and properties of vertical-and horizontal-related excitatory vestibuloocular neurons in the cat, J. Neurophysiol., 48:891-903, 1982

Uchino, Y., Suzuki, S. Axon collaterals to the extraocular motoneuron pools of inhibitory vestibuloocular neurons activated from the anterior, posterior and horizontal semicircular canals in the cat, Neurosci. Letters, 37:129-135, 1983

Suzuki, S., Miyazaki, M., Watanabe, S., Homma, S. EMG activity and kinematics of human stumbling corrective reaction during running  Biomechanics VIII-A:444-454,1983

Hutton, R.S., Enoka, R.M., Suzuki, S. Activation history of muscle and changes in human reflex excitability, Biomechanics VIII-A:301-305, 1983

Hutton, R.S., Enoka, R.M., Suzuki, S. Activation history and constant errors in human force production, Brain Res., 307:344-346, 1984

Hutton, R.S., Kaiya, K., Suzuki, S., Watanabe, S. Post-contraction errors in human force production are reduced by muscle stretch, J. of Physiol.(London), 393:247-259, 1987

Suzuki, S., Kaiya, K., Watanabe, S., Hutton, R.S. Contraction-induced potentiation of human motor unit discharge and surface EMG activity, Med. & Sci. in Sports & Exercise, 20:391-395, 1988

Suzuki, S., Hayami, A., Suzuki, M., Watanabe, S., Hutton, R.S. Reductions in recruitment force thresholds in human single motor units by successive voluntary contractions, Exp. Brain Res., 82:227-230, 1990

Laidlaw, DH., Kornatz KW., Keen, DA., Suzuki, S., Enoka, RM., Strength training improves the steadiness of slow lengthening contractions performed by old adults J. of Appl. Physiol. 87(5):1789 -1795,1999

Kakihana W., Suzuki S., The EMG activity and mechanics of the running jump as a function of takeoff angle. J of Electromyography and Kinesiology, 11:365-372, 2001

Sekiguchi H., Nakazawa K., Suzuki S., Differences in recruitment properties of the corticospinal pathway between lengthening and shortening contractions in human soleus muscle. Brain Research, 977:169-179, 2003

Kuramochi R., Kimura T., Nakazawa K., Akai M., Torii S., Suzuki S., Anticipatory modulation of neck muscle reflex responses induced by mechanical perturbations of the human forehead. Neuroscience Letters, 366:206-210, 2004