A group of researchers fromUniversity of Texas Southwestern Medical Center led one Randomized clinical studywhich lasted two yearsup 61 middle -aged sedentary adults (average age 53 years). The participants, initially in good health but physically inactive, were divided into two groups: the first followed a progressive aerobic training program; The second has carried out stretching, yoga and flexibility exercises.
The results were unequivocal: who followed the supervised operating programcomposed of 4-5 weekly sessions between moderate intensity activities and sessions ad High intensity (HIIT)saw Increase the aerobic capacity (VO₂ Max) by 18% And significantly reduce the rigidity of the left ventricleone of the first signs of heart aging.
In simple words, The heart of the participants is about 20 years old compared to the initial values.
The heart has a “plasticity” window
The study underlines how it is It is essential to start before the age of 65. After this threshold, the structural changes of the heart caused by sedentary lifestyle often become irreversible. The good news is that during the middle age, that is, between 45 and 64 years, the heart still retains a certain plasticity and can respond positively to the stimulus of physical exerciseimproving not only the functionality but also the structure itself.
The protocol adopted provided for a periodic approach, with one gradual progression in the intensity and duration of training. After 10 months of progressive increase, the participants stabilized in one maintenance phase: At least 150 minutes a week of activitywith a mix of constant pace exercises and high intensity sessions, such as the Famous “4 × 4” protocol (four minutes to 95% of the maximum heart rate, followed by three minutes of recovery, repeated four times).
The benefits were measured with extremely precise methods: Right cardiac cateterism, 3D EcoCardiographymeasurement of the volume of blood and lung pressure. All this allowed researchers to analyze in detail the behavior of the heart in real conditionsand not only through indirect estimates.
Regular physical exercise is a real preventive medicine
According to the authors of the study, including the well -known cardiologist Benjamin D. Levine, A targeted training can prevent the onset of heart failure in a fraction of preserved ejection (HFPEF)an increasingly widespread pathology among over 60 and particularly difficult to treat. The increase in cardiac compliance – that is, the ability of the heart to expand during the filling – is a signal that the cardiac muscle has returned to work more efficiently.
But it’s not just about numbers: the participants in the program also reported a General improvement in the quality of lifein the resistance to effort and in the feeling of daily well -being.
The lesson is clear: moving is not an optionalbut one real form of prevention. According to the researchers, dedicate 4-5 days a week to physical activity it should become one Good daily habithow to wash your teeth or sleep well.
