Journal
DIAGNOSTICS
Volume 11, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/diagnostics11122218
Keywords
heart rate variability; cardiac autonomic control; aging; cardiovascular health; cognition
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The study revealed that there is a decline in parasympathetic activity in cardiac autonomic control with aging. HRV analysis could help assess the normal age-related changes in cardiac autonomic control at rest and in response to cognitive demands.
Our goal was to investigate age-related differences in cardiac autonomic control by means of heart rate variability (HRV). For this purpose, 30 healthy older and 34 younger adults were studied during three different conditions: (i) during resting state, (ii) during the execution of two cognitive tasks, and (iii) during the subsequent recovery phase. Mean heart rate and HRV parameters were higher in younger compared to older participants during all three conditions. While the mean heart rate was higher in older adults during the cognitive tasks compared to the resting state, it did not change in younger adults. In contrast, the change in HRV during the three conditions did not differ between age groups. Our results suggest decreased parasympathetic activity reflecting declined cardiac autonomic control with aging. In conclusion, HRV analysis could support the assessment of normal age-related alterations in cardiac autonomic control at resting state and in response to cognitive demands.
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