Background Respiration is a crucial determinant of autonomic balance and heart rate
variability (HRV). The comparative effect of spontaneous versus paced breathing on HRV …

Background Heart rate variability is a measure of autonomic activity that is growing in
popularity as a research outcome. However, despite its increased use, the known effects of …

Introduction Combat-related traumatic injury (CRTI) adversely affects heart rate variability
(HRV). The mediating effect of mental and physical health factors on the relationship …

Introduction Combat-related traumatic injury (CRTI) has been linked to an increased
cardiovascular disease (CVD) risk. The long-term impact of CRTI on heart rate variability …

Chronic fatigue/physical exhaustion (FPE) impacts combat readiness but is difficult to
identify. We tested the hypothesis that resting heart rate variability (HRV), including both time …

Purpose: To determine if acute slow breathing at 6 breaths/min would improve baroreflex
sensitivity (BRS) and heart rate variability (HRV), and lower blood pressure (BP) in adults …

Objective Heart rate variability (HRV), thought to reflect autonomic nervous system function,
is lowered under conditions such as posttraumatic stress disorder (PTSD). The potential …

Heart rate variability (HRV) is a well‐established surrogate of cardiac and emotional health
that reflects the balance between sympathetic and parasympathetic activity of the autonomic …

Clinical Scenario: Recent systematic reviews show conflicting information regarding the
effect of concussion on cardiac autonomic function. Controlled aerobic exercise is the most …

Heart rate variability (HRV) is a non-invasive measure of autonomic function. The
relationship between unselected long-term traumatic injury (TI) and HRV has not been …