Following on from the COVID-19 pandemic is another worldwide public health challenge
that is referred to variously as long COVID, post-COVID syndrome or post-acute sequelae of …

Purpose: To carry out a systematic review to determine the main methods used to study the
heart rate variability (HRV) in individuals after the acute phase of COVID-19. Methods: The …

Abstract Post-COVID-19 Syndrome (PCS) is a condition with multiple symptoms partly
related to dysregulation of the autonomic nerve system. Assessment of heart rate variability …

Background: Heart rate variability is a non-invasive, measurable, and established autonomic
nervous system test. Long-term COVID-19 sequelae are unclear; however, acute symptoms …

While the majority of individuals with coronavirus disease 2019 (COVID-19) recover
completely, a significant percentage experience persistent symptom, which has been …

(1) Background: COVID-19 can lead to many complications, including cardiorespiratory
complications and dysautonomia. This can be assessed by heart rate variability (HRV) …

Following COVID-19 infection, a substantial proportion of patients suffer from persistent
symptoms known as Long COVID. Among the main symptoms are fatigue, cognitive …

This study investigated the impact of mild COVID-19 on HRV in groups stratified by time after
infection and to compare to a healthy group of the same age without previous virus infection …

Heart Rate Variability (HRV) and arterial pressure (AP) variability and their responses to
head-up tilt test (HUTT) were investigated in Post-COVID-19 syndrome (PCS) patients …

Reduced heart rate variability (HRV) and fatigue are common after COVID‐19 infection and
both are potentially influenced by physical activity (PA). We compared resting HRV, PA from …