Why the study?
Does handgrip exercise alter the firing pattern of single-unit muscle sympathetic nerve activity differently in chronic heart failure patients compared to healthy controls?
Population
29 subjects: 16 patients with chronic heart failure and 13 age-matched healthy control subjects.
Comparison
Handgrip exercise vs Age-matched healthy control subjects undergoing…
Design
Case-control
Authors
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Exaggerated single-unit MSNA response to handgrip in CHF may signal altered sympathoexcitation; hypothesis-generating and requires prospective validation before clinical relevance.
Does handgrip exercise alter the firing pattern of single-unit muscle sympathetic nerve activity differently in chronic heart failure patients compared to healthy controls?
Chronic heart failure patients exhibit an exaggerated sympathetic nerve activity response during handgrip exercise, driven by an increased probability of multiple firings of single-unit sympathetic neurons.
Murai et al. (2009) studied this question.
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