Heart attack patients with strong legs have a lower risk of heart failure | Health

People with strong legs are less likely to develop heart failure, according to a study presented at the European Society of Cardiology (ESC) Scientific Meeting Heart Failure 2023. heart failure after a heart attack.

Myocardial infarction is the most common cause of heart failure,2 and approximately 6-9% of heart attack patients develop a myocardial infarction. 3,4 Previous studies have shown that having strong quadriceps muscles is associated with a lower risk of death in patients.and coronary artery disease.

Also read: 60% Increase in Cardiovascular Disease in 30 Years: Study

This study tested the hypothesis that leg strength is associated with a reduced risk of disease. have heart failure After acute myocardial infarction. The study included 932 patients who were hospitalized for acute myocardial infarction between 2007 and 2020, had no pre-hospital heart failure, and did not develop heart failure complications during hospitalization. The median age was 66 years, and 753 participants (81%) were male.

Maximum quadriceps strength was measured as an index of leg strength. The patient sat in a chair and contracted the quadriceps as hard as possible for 5 seconds. Maximum values ​​in kg were recorded with a hand-held dynamometer attached to the ankle. Measurements were taken on each leg and the researchers used the average of both values. Strength is expressed against body weight. That is, divide your quadriceps strength (kg) by your body weight (kg) and multiply by 100 to get your weight % value. Patients were classified as ‘high’ or ‘low’ in fitness depending on whether the value was above or below the median for their gender.

The median for women was 33% of body weight and the median for men was 52% of body weight. A total of 451 patients had low quadriceps strength and 481 had high strength. Sixty-seven patients (7.2%) developed heart failure during an average follow-up of 4.5 years. The incidence of heart failure was 10.2 per 1000 person-years in patients with high quadriceps muscle strength and 22.9 per 1000 person-years in patients with low muscle strength.

Researchers analyzed the relationship between quadriceps muscle strength (low and high) and the risk of developing heart failure. This analysis showed that age, gender, BMI, history of myocardial infarction or angina pectoris, diabetes, atrial fibrillation, chronic obstructive pulmonary disease, peripheral artery disease, renal disease, etc., were relevant to the development of heart failure after myocardial infarction. was adjusted to account for known factors. function. 41% lower risk of developing heart failure with high quadriceps strength compared to low quadriceps strength (hazard ratio) [HR]: 0.59; 95% confidence interval [CI] 0.35–1.00; p=0.048).

The researchers also analyzed the association between quadriceps muscle strength and the risk of developing heart failure as a continuous variable. Each 5% increase in body weight in quadriceps muscle strength was associated with an 11% reduction in the likelihood of heart failure (HR 0.89; 95% CI 0.81-0.98; p=0.014).

Study author Kensuke Ueno, a physiotherapist at the Kitasato University Graduate School of Medicine in Sagamihara, said, “The muscle strength of the quadriceps muscle can be measured easily and accurately in a clinical setting. “It shows that muscle strength can help identify patients.” Patients at higher risk of developing heart failure after a myocardial infarction could be monitored more closely. suggest that increased strength training should be recommended. They attack to prevent heart failure. ”

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