Posted on 04/13/2023 7:52:21 PM PDT by ConservativeMind
In adolescents, sedentary time may increase heart size three times more than moderate-to-vigorous physical activity, a paper concludes.
There has been a gap in knowledge on the effect of sedentary time and moderate-to-vigorous physical activity on cardiac structure and function in large adolescent populations due to the scarcity of device-measured movement behavior and echocardiography assessment in the pediatric population. A higher left ventricular mass, which indicates an enlarged or hypertrophied heart, and a reduced left ventricular function, which indicates decreased heart function, may in combination or independently lead to an increased risk of heart failure, myocardial infarction, stroke, and premature cardiovascular death.
The study used data from the University of Bristol study Children of the 90s.
On average, adolescents spent almost eight hours/day sedentary and about 49 minutes/day in moderate-to-vigorous physical activity in this new study. It was observed that both sedentary time and moderate-to-vigorous physical activity were associated with higher left ventricular mass. However, the increase in cardiac mass (3.8 g/m2.7) associated with sedentary time was three times higher than the cardiac mass increase (1.2 g/m2.7) associated with moderate-to-vigorous physical activity. This finding was observed in adolescents irrespective of their obesity status, i.e among adolescents who had normal weight and those who were overweight or obese. Importantly, light physical activity was not associated with an increase in cardiac mass but was associated with better cardiac function estimated from left ventricular diastolic function.
"This novel evidence extends our knowledge of the adverse effects of sedentary time on cardiac health. It is known among adults that a 5 g/m2 increase in cardiac mass may increase the risk of cardiovascular disease and death by 7%–20%. Engaging in moderate-to-vigorous physical activity also slightly enlarged the heart but it seems an acceptable 'negative side effect' considering several other health benefits," says Andrew Agbaje.
(Excerpt) Read more at medicalxpress.com ...
It looks like something less than 16% added cardiovascular disease risk would be in place, as 20% was for 5 gm/m2, and the average found was 3.8 g/m2.
“In adolescents, sedentary time may increase heart size three times more than moderate-to-vigorous physical activity, a paper concludes.”
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The interesting fact of the matter is that the obese are not the group that is dropping on the ground, dead or dying.
I do believe those who are obese at this time and have been vaccinated and continue Boosters are much more likely to start dropping in another 2-2 1/2 years. I find it interest, this tidbit of news. Considering the sciences these days, I would sooner believe they are simply laying the ground work for the future deaths.
I had heart issues with chest pain after a good meal, missing heart beats, and racing heart with pamic attacks in my mid-50’s.
After beginning exercise of walking 5 rounds of 18 holes every week, not only my heart issues disappeared, but also gone was hip joint pain, border line diabetic situation, and 145/90 BP dropped to 125/85. Now at age 83 still no heart issues with mild exercise 4 times every week for 30 minutes.
That is the future I want for me, sir.
I am very glad you found it.
Best to start at age 50. Do not chase dollars after age 50. You will not live long enough to enjoy fruits of your labor.
Smokers have enlarged hearts as well, it’s a result of not having enough oxygen feeding your system. The heart expands to make up the difference by pumping more blood with less oxygen. At the very least you should breathe deeply throughout the day. Some practitioners recommend a 10 minute routine of deep breathing.
According to my buddy Doc Joe, a sedentary lifestyle is the worst thing for you. Joe is 80, works out regularly and eats well. He looks like he’s 10 years younger.
I was a sedentary teen, and continued that way to this day.
My heart condition is called “Congestive Heart Failure”, and, at age 79, am being monitored annually (echocardiogram) for a possibly-enlarging aorta.
Other than fearing cancer or a stroke, I feel pretty good!
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