Yôga and Breathing Techniques Training in Patients With Heart Failure and Preserved Ejection Fraction

Intervention observing respiratory frequency (RF) of 15- 20 respiratory cycles per minute (rcpm). A standardized 7-minute final relaxation .

Intervention uses diaphragmatic breathing, observing slow respiratory frequency, between 5-8 rcpm. A standardized 7-minute final relaxation.

Patients will be oriented to keep their pharmacological routine and daily activities, with no structured exercises. They will have to return to the hospital for post-testing after 8 weeks from randomization