Modulation of Soleus H Reflex by Teeth Clenching Takao Miyahara Department for Stomatognathic Dysfunction, Faculty of Dentistry, Tokyo Medical and Den

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1 Modulation of Soleus H Reflex by Teeth Clenching Takao Miyahara Department for Stomatognathic Dysfunction, Faculty of Dentistry, Tokyo Medical and Dental University Director: Prof. Takashi Ohyama) ( Department of Physiology, Faculty of Dentistry, Tokyo Medical and Dental University Director: Prof. Yoshio Nakamura) ( Modulation of the human soleus H-reflex (Sol. H-R) was studied during voluntary teeth clenching in 11 healthy adult volunteers, to investigate the possible correlation of motor functions between the jaw and body. The following results were obtained; ( 1) Sol. H-R was facilitated during the maximum voluntary teeth clenching more than during the maximum voluntary efforts in the other parts of the body, i. e., Jendrassik maneuver and clenching of both hands. 2) The amount ( of the Sol. H-R facilitation increased with the masseter EMG activity. 3) Facilitation of the Sol. H-R in association with teeth clenching started ca. ( 60ms before the onset of the masseter EMG activity, reached its peak ca. 100ms after the onset and thereafter decreased to a certain plateau level in accordance with the masseter EMG activity level. 4) During the inhibition of the masseter EMG reflexively evoked by electrical ( stimulation of the lower lip, the amount of the facilitation of the Sol. H-R during teeth clenching decreased compared with that without lip stimulation, though the facilitation was still retained. It was concluded that: 1) The excitability of the Sol. H-R is remarkably elevated during teeth clenching. 2) There is a positive correlation between the amount of the facilitation of the Sol. H-R and the teeth clenching force level. 3) The facilitation is due to both the descending influence from the higher brain and the afferent inputs from the oral structures. It is assumed that the oral motor activity exerts a strong influence on the bodily motor function in general.

16 1) Williams, M. 0., Chaconas, S. J. and Bader, P. B.: The effect of mandibular position on appendage muscle strength. J. Prosthet. Dent. 49: , ) Bates, R. E., Jr. and Atkinson, W. B. : The effects of maxillary MORA's on strength and muscle efficiency tests. J. Craniomandib. Prac. 1: 37-42, ) Verban, E. M., Groppel, J. L., Pfautsch, E. W. and Ramseyer, G. C.: The effects of a mandibular orthopedic repositioning appliance on shoulder strength. J. Craniomandib. Prac , : 4) Schubert, M. M., Guttu, R. L., Hunter, L. H., Hall, R. and Thomas, R. : Changes in shoulder and leg strength in athletes wearing mandibular orthopedic repositioning appliances. J. A. D. A. 108 : , ) Greenberg, M. S., Cohen, S. G., Springer, P., Kotwick, J. E. and Vegso, J. J. : Mandibular position and upper body strength : a controlled clinical trial. J. A. D. A. 103 : , certain reflexes in the electromyogram and the conduction velocity of peripheral nerve fibers. 7) Landau, W. M. and Clare, M. H.: Fusimotor Bull. Johns Hopk. Hosp. 86: , function. Part 4. Reinforcement of the H reflex 20) Paillard, J. : Reflexes et regulation d'origine in normal subjects. Arch. Neurol. 10: , ) Kameyama, O., Hayes, K. C. and Wolfe, D.: Handbook of physiology, Section 1, The nervous system 2, Ed. Brooks, V. B., Bethesda, 1981, American physiological society, ) Delwaide, P. J. and Toulouse, P. : Facilitation of monosynaptic reflexes by voluntary contraction of muscles in remote parts of the body. Mechanisms involved in Jendrassik maneuver. Brain 104: , ) Delwaide, P. J. and Toulouse, P.: The Jendrassik maneuver : Quanititative analysis of reflex reinforcement by remote muscle contraction. In: Motor control mechanisms in health and disease. Ed. Desmed, J. E., New York, 1983, Raven, ) Prochazka, A.: Sensorimotor gain control: a basic strategy of motor systems? Prog. Neurobiol. 33: , ) Yemm, R.: The response of the masseter and temporal muscles following electrical stimulation of oral mucous membrane in man. Archs. Oral Biol. 17: 23-33, ) TUrker, K. S. and Miles, T. S.: Inhibitory reflex in human masseter muscle. In Electromyography of jaw reflexes in man. Ed. van Steenverghe, D. and De Laat, A., Leuven, 1989, Leuven Univ. Press, ) Ongerboer de Visser, B. and Cruccu, G.: Functional mechanisms of reflex pathway subserving the human masseter inhibitory reflex. In Electromyography of jaw reflexes in man. Ed. van Steenverghe, D. and De Laat, A., Leuven, 1989, Leuven Univ. Press, ) Magladery, J. W. and McDougal, D. B., Jr.: Electrophysiological studies of nerve and reflex activity in normal man. I. Identification of proprioceptive chez l'homme. Etudeneuro phygiologique et neulopsychologique, Paris, 1955, Arnette. Methodological considerations contributing to 21) Rothwell, J. C., Day, B. L., Berardelli, A. and variability of the quadriceps H-reflex. Am. Marsden, C. D. : Habituaiton and conditioning J. Med. and Rehabil. 68: , of the human long latency stretch reflex. Exp. Brain Res. 63 : , ) Crone, C. and Nielsen, J.: Methodological implications of the post activation depression of the soleus H-reflex in man. Exp. Brain Res. 78: 28-32, ) Poulton, E. C.: Human manual control. In: 23) Gassel, M. M. and Diamantopoulos, E.: The effect of procaine nerve block on neuromuscular reflex regulation in man : an appraisal of the role of the fusimotor system. Brain , : 24) Meinck, H. M.: Facilitation and inhibition of the human H-reflex as a function of the amplitude of the control reflex. Electroencepha. Clin. Neurophysiol. 48: , ) Crone, C., Hultborn, H., Mazieres, L., Morin, C., Nielsen, J. and Pierrot-Deseilligny, E.: Sensitivity of monosynaptic test reflex to

17 facilitation and inhibition as a function of the test reflex size : a study in man and the cat. Exp. Brain Res. 81 : 35-45, ) Fukushima, Y., Yamashita, N. and Shimada, Y.: Facilitation of H-reflex by homonymous la-afferent fibers in man. J. Neurophysiol. 48: , ) Magladery, J. W., Porter, W. E., Park, A. M. and Teasdall, R. D.: Electrophysiological studies of nerve and reflex activity in normal man. 4. The two-neurone reflex and identification of certain action potentials from spinal root and cord. Bull. Johns Hopk. Hosp. 88: , ) Blair-Thomas, C. A. and Luschei, E. S.: Increases in reflex excitability of monkey masseter motoneurons before a jaw-bite reaction-time responce. J. Neurophysiol. 38: , ) Morin, C. and Pierrot-Deseilligny, E.: Role of la afferents in the soleus motoneurones inhibition during a tibialis anterior voluntary contraction in man. Exp. Brain Res. 27: , ) Vallbo, A. B.: Human muscle spindle discharge during isometric voluntary contractions. Amplitude relations between spindle frequency and torque. Acta Physiol. Scand. 90: , ) Burke, D., Hagbarth, K. and Skuse, N. F.: Recruitment order of human spindle endings in isometric voluntary contractions. J. Physiol. 285: , ) Larson, C. R., Smith, A. and Luschi, E. S.: Discharge characteristics and stretch sensitivity of jaw muscle afferents in the monky during controlled isometric bites. J. Neurophysiol. 46: , 1981.

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理学療法科学シリーズ臨床運動学第6版サンプル μ μ μ μ μ α μ 1) Appell HJ: Skeletal muscle atrophy during immobilization. Int J Sports Med 7: 1-5, 1986. 2) Bohannon RW: Make tests and break tests of elbow flexor muscle strength.