Introduction: Psychological therapies in cardiac rehabilitation programs were found to be effective for patients with Coronary Artery Disease (CAD). Heart Rate Variability Biofeedback (HRV-BF) is a behavioural neuro-cardiac intervention designed as a natural oscillation between the breathing cycle and Heart Rate (HR). also known as refractory sinus rhythm biofeedback. Aim: To find the... https://unitedssports.shop/product-category/hockey-protective-gloves-senior/