The state of relaxation was appraised using the Smith Relaxation
State Inventory 3 (SRSI3)[21]. It contains 38 items evaluating 19
states associated with relaxation in four categories: basic relaxation, mindfulness, positive energy and transcendence. It also contains a scale for measuring the degree of stress. The reliability of
previous versions of this inventory, measured by means of Cronbach's alpha, was between 0.60 and 0.88[22].