Developmental Changes in Hemodynamic Responses and Cardiovagal Modulation during Isometric Handgrip Exercise
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چکیده
منابع مشابه
Developmental Changes in Hemodynamic Responses and Cardiovagal Modulation during Isometric Handgrip Exercise
The purpose of this study was to examine differences in pressor response and cardiovagal modulation during isometric handgrip exercise (IHG) between children and adults. Beat-to-beat heart rate (HR) and blood pressure were measured in 23 prepubertal children and 23 adults at baseline and during IHG. Cardiovagal modulation was quantified by analysis of HR variability. Mean arterial pressure resp...
متن کاملEffect of age on the hemodynamic and sympathetic responses at the onset of isometric handgrip exercise.
Cardiac and peripheral vasomotor factors contribute to the rapid pressor response at the onset of isometric handgrip exercise. We tested the hypothesis that age enhances the sympathetic and vasoconstrictor response at the onset of isometric handgrip exercise so that the pressor response is maintained, despite a diminished cardiac function. Twelve young and twelve older (24 ± 3 and 63 ± 8 yr) in...
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In general, cardiac regulation is dominated by the sympathetic and parasympathetic nervous systems in men and women, respectively. Our recent study had revealed sex differences in the forebrain network associated with sympathoexcitatory response to baroreceptor unloading. The present study further examined the sex differences in forebrain modulation of cardiovagal response at the onset of isome...
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BACKGROUND In the past, isometric exercises were proscribed for heart disease. However, recent evidence suggests that an isometric handgrip training (IHT) protocol - four sets of two minutes at 30% of maximum strength - produces favorable effects on the autonomic modulation and reduces resting systolic (SBP) and diastolic (DBP) blood pressure. OBJECTIVE Aiming at obtaining support for broad c...
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The dramatic increase in skin blood flow and sweating observed during heat stress is mediated by poorly understood sympathetic cholinergic mechanisms. One theory suggests that a single sympathetic cholinergic nerve mediates cutaneous active vasodilation (AVD) and sweating via cotransmission of separate neurotransmitters, because AVD and sweating track temporally and directionally when activated...
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ژورنال
عنوان ژورنال: International Journal of Pediatrics
سال: 2010
ISSN: 1687-9740,1687-9759
DOI: 10.1155/2010/153780