Cardiovascular regulation during exercise - Contribution of peripheral reflexes

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概要

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• Static and dynamic exercise is accompanied by increases in arterial blood pressure, heart rate and sympathetic nerve activity. It has been hypothesized that these cardiovascular responses are mediated by central command as well as by feedback mechanisms operating via afferent nerves (group III and IV fibers) that arise from skeletal muscles, are sensitive to mechanical (the so-called muscle mechanoreflex) and metabolic changes (the so-called muscle metaboreflex), and are modulated by arterial and cardiopulmonary baroreflexes. In this review, discussion is focused on the roles of the arterial baroreflex and muscle metaboreflex in cardiovascular regulation during exercise. In the first part of the review, brief discussion is made of the functions of these two reflexes during exercise; in the second part, their interactions are looked at in more detail. It is thought that during heavy exercise, the arterial baroreflex and the muscle metaboreflex are both activated, and interact in ways that lead to modulation of the primary cardiovascular reflex responses. Two types of interaction have been demonstrated. In the first, the arterial baroreflex acts to oppose pressor responses induced via the muscle metaboreflex. The second type of interaction involves the modulation of arterial baroreflex function during muscle metaboreflex activation. The authors offer commentary on these two types of interaction, including recent knowledge.

著者

• FUJII Naoto

  Institute of Health and Sports Science, University of Tsukuba

• Nishiyasu Takeshi

  Institute Of Health And Sport Sciences University Of Tsukuba

• Watanabe Kazuhito

  Institute Of Health And Sport Sciences University Of Tsukuba

• Ichinose Masashi

  Human Integrative Physiology Laboratory, School of Business Administration, Meiji University

• Fujii Naoto

  Institute of Health and Sport Sciences, University of Tsukuba

関連論文

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• 1-B-02 Arterial blood pressure response to severe passive heating at rest relates to hyperthermia-induced hyperventilation(The Proceedings of the 19th Annual Meetings of Japan Society of Exercise and Sports Physiology August 25・26, (Tokushima))
• Cardiovascular regulation during exercise : Contribution of peripheral reflexes
• 2-C-02 Muscle metaboreflex modulates dynamic cardiovascular responses to acute hypotension in humans(The Proceedings of the 19th Annual Meetings of Japan Society of Exercise and Sports Physiology August 25・26, (Tokushima))
• 1-A-08 Spontaneous baroreflex control of heart rate during activation of the muscle metaboreflex in the forearm and calf in humans(The Proceedings of the 19th Annual Meetings of Japan Society of Exercise and Sports Physiology August 25・26, (Tokushima))
• Cardiovascular regulation during exercise - Contribution of peripheral reflexes
• Cardiovascular regulation during exercise-Contribution of peripheral reflexes

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