No abstract available
MeSH terms
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Aged
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Autonomic Nervous System Diseases / physiopathology*
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Heart Rate / drug effects
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Heart Rate / physiology*
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Humans
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Male
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Middle Aged
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Phenylephrine / pharmacology
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Posture
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Pressoreceptors / physiopathology*
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Systole / drug effects
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Systole / physiology