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Sham vs HRV Biofeedback

Not a SHAM…

Conclusions: Adding HRV biofeedback to standard stroke unit care led to improved neurocardiac function and sustained alleviation of autonomic symptoms after acute ischaemic stroke, which was likely mediated by a predominantly parasympathetic mechanism.

Randomized Sham-Controlled Pilot Study of Neurocardiac Function in Patients With Acute Ischaemic Stroke Undergoing Heart Rate Variability Biofeedback. Front. Neurol., 26 May 2021

https://www.frontiersin.org/articles/10.3389/fneur.2021.669843/full