The purpose of this study was to measure the influence of breathing frequency (BF) on heart
rate variability (HRV) and specifically on the Low Frequency/High Frequency (LF/HF) ratio in …

Context: The initial gain from a Pulmonary Rehabilitation Program (PRP) among patients
with chronic obstructive pulmonary disease (COPD) begins to fade away 6 months after the …

The objective of this study was to investigate the synchronization between low-frequency
breathing patterns and respiratory sinus arrhythmia (RSA) of heart rate during guided …

Respiratory sinus arrhythmia (RSA) or high-frequency heart rate variability has been widely
used as a noninvasive measure of cardiac vagal tone. However, their dependency on both …

Objective: This review examines the evidence for psychosocial influences in asthma and
behavioral medicine approaches to its treatment. Method: We conducted a systematic …

Objectives Chronic obstructive pulmonary disease (COPD) is one global disease. Lung
function gradually declines. Medication does not fully reverse the airflow limitation. Qigong's …

A minimal model for the neural control of heart rate (HR) has been developed with the aim of
better understanding respiratory sinus arrhythmia (RSA)–a modulation of HR at the …

Persistence of respiratory sinus arrhythmia (RSA) has been described in humans during
intense exercise and attributed to an increase in ventilation. However, the direct influence of …

Respiratory sinus arrhythmia (RSA) is classically described as a vagally mediated increase
and decrease in heart rate concurrent with inspiration and expiration, respectively. However …

Heart rate variability (HRV) has prognostic and diagnostic potential, however, the
mechanisms behind respiratory sinus arrhythmia (RSA), a main short-term HRV, are still not …