Along with smoking cessation and healthy eating, regular exercise is considered one of the foundations of a healthy lifestyle, according to an online edition for girls and women aged 14 to 35 Pannochka. net But everything needs a measure.

A new study published in the journal Heart suggests that too intense physical training increases the risk of death from a heart attack and the development of arrhythmia in the future.

In their comments, the researchers indicate that during the work they received a J-shaped utility curve of physical exercises for the body. This means that more - does not always mean better. They also noted that previous studies raised the serious question of what intensity and duration of exercise is optimal in different periods of life.

The first study was conducted in Germany, where for 10 years scientists evaluated the health of 1,000 participants with stable angina, doing physical exercises of varying intensity.

Most of the participants were over 60 years old, and they took part in the cardiac rehabilitation program, in which. Researchers analyzed the survival and complication rate of participants.

Today, patients with heart disease are recommended to moderate moderate intensity aerobics up to 1 hour per session at least 5 times a week.

Participants in this study were divided into four groups:.

• 40% were engaged in 2 to 4 hours per week.

• 30% were engaged more than 4 hours per week.

• 30% were engaged in less than 2 hours per week.

• 10% have never done it or done it rarely.

Physically inactive participants were 2 times more susceptible to myocardial infarction and stroke, they had a 4 (!) Times greater risk of dying from all causes. But the results showed that the most active participants, who were engaged more than 4 hours a week, died of a heart attack and stroke 2 times more often than their inactive peers.

Scientists claim that they took into account the attendant factors that could in some way affect the results of the study.

Regular intensive exercise leads to arrhythmia?.

The second study, conducted by scientists from Sweden, observed 44,000 men aged 45 to 79 who were questioned about physical activity at the age of 15, 30, 50 years and in the last year of life.

Researchers continued to follow the participants for an average of 12 years, monitoring the condition of their hearts and the presence of arrhythmia - primarily atrial fibrillation (AF), which is considered an important risk factor for stroke.

The results showed that men who intensively exercised more than 5 hours a week had by the age of 60 a 19% greater risk of arrhythmia compared to peers who were engaged less than 1 hour per week.

Nevertheless, men who spent less than an hour doing less intensive exercise (bicycle or brisk walking) by this age had a 13% lower risk compared to participants who did not exercise at all.

In an accompanying article, the authors of Eduard Guasch and Lluis Mont say that these results can affect the recommendations for physical exertion for people from 30 to 60 years. But they noticed: "In general, the intensity of exercise in 30-year-olds is higher than in 60-year-olds, therefore people of different ages can report differently about the same level of exercise".

Intensity and duration are "critical" factors.

Guasch and Mont write that physical activity is traditionally considered to be beneficial to heart health, but some researchers argue that intensive training is associated with a "pro-inflammatory" condition, and this is a cardiac risk.

They believe that both recent studies highlight the intensity and duration of physical exercises as "critical" factors, adding that "maximum benefit for the heart is achieved when performing recommended exercises in moderate doses, but this benefit is lost with high intensity or duration of exercise".

But scientists focus on some of the limitations of the study, namely the questionnaires that the participants themselves filled out.

They note that the reliability of data collection and their correlation with clinical outcomes is the main problem of this type of research. But similar questionnaires are used in the compilation of large databases.

Despite the results, researchers Guasch and Mont say: "The benefits of exercise definitely not questioned. On the other hand, they must be supported by scientific data. Future research will serve to maximize the benefit and minimize the risk of regular exercise, preventing their unwanted effects ".

medbe. en.