Frailty in the elderly is a high-priority consideration with cardiovascular (CV) medicine.1,2 Muscle weakness is strongly associated with reduced exercise capacity and physical disability.3 Quadriceps isometric strength (QIS) is a strong predictor of exercise capacity in patients with coronary artery disease (CAD).
After a heart attack, known as a myocardial infarction, the heart goes through a process in which fibrous tissue accumulates, causing an enlargement of the heart. Evidence suggests that exercise-based cardiac rehabilitation can alter the course of the remodeling in a way that improves heart function.
A study was performed to test predictive value of quadriceps strength in older patients for cardiovascular disease (CVD). The study included 1,314 patients, age 65+, with CVD. The primary finding of the study was that a higher level of QIS is associated with lower risks of all-cause and CV mortality in patients with CVD. This suggests that strength training should be recommended for patients who have experienced a heart attack to prevent heart failure.