Gilder, Michael and Ramsbottom, Roger
Change in heart rate variability following orthostasis relates to volume of exercise in healthy women
Autonomic Neuroscience, 143, (1-2), . (doi:10.1016/j.autneu.2008.06.002). (PMID:18644748).
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Physically active individuals demonstrate increased heart rate variability (HRV) during rest compared to sedentary individuals, but the impact of different volumes of regular exercise on the HRV response to postural change is not well understood. This study investigates change in HRV following orthostasis in seventy-two young women who exercise at low (LV) or high (HV) volumes of physical activity. Supine and standing R–R intervals were analysed by time domain, frequency domain and Poincaré plot methods. All methods revealed greater change in the vagal response in the HV group, indicating that HRV following postural change is modulated by volume of exercise.
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