3 hours a week of cardio is plenty to get practically all the health benefit there is with minimal risk of injury or long term damage. If you find you have more than 3 hours/week to spend on cardio, spend it with your child and spouse, and if you don’t have those, spend it on acquiring them.
But I don't just run to get some health benefits, I run to get faster race times (to a point).
In the past ten to twelve years there has been a growing amount of research to show the links between excessive aerobic exercise and issues with the heart (orthopaedic issues are another story, but certainly not to be discounted if we are thinking about overall health).
These studies have been conducted and evaluated by cardiologists, many of who (like James O’Keefe)
This is where we can stop reading. O'Keefe is a fraud who's been pushing junk science for years. The link already posted refutes the idea that running is bad for your health.
Compared with the recommended level, mortality risk was lower at physical activity levels well above the recommended target range. Further, there was no threshold beyond which lifespan was compromised.
In my opinion this is an example of how those who are hypersensitive to a condition, may point the way to potential future troubles for those of us who are less so. Just like too much sugar is bad for any of us, it is especially so for diabetics. The same principles may apply in this case also, with too much cardio being bad for any of us, but especially so for those recovering from a heart attack.
A better take on this study than the replies so far is the article ‘Extreme Exercise and the Heart’ from the Newyorker. Google it, as I can’t post links as a new user.
It's possible. Being drug-free, and training for a decent marathon time in 2017 at age 43, I was able to increase mileage. After the marathon, when I got my best time although not what i wanted...I was urinating blood clots for almost 2 weeks, suggesting trauma on the body. It went away but if that can happen, anything can. Anything with the bloodstream can affect the heart or other organs whenever and however.
I would recommend that people interested in this topic of exercise induced cardiac damage listen to the following talks. One video, is by Dr James O'Keefe and the other is a response to O'Keefe's findings by Dr Aaron Baggish who dives deeper into the data by looking at the health and history profiles of the participants in one of the studies that O'Keefe used to come to his conclusions.
James O'Keefe, M.D. presenting at the 2nd Annual Ancestral Health Symposium 2012 (AHS12).Cardiovascular Damage From Extreme Endurance ExerciseAbstract:Altho...
Just to clarify, the majority of the research pertaining to cardiovascular maladaptation in runners/endurance athletes and mortality in the past 10 years has found that while runners tend to present with many maladaptations of the heart as a direct result of running, such as atrial fibrillation, enlarged right ventricle, increased plaque, scarring on the heart, etc., there is little to no evidence to suggest that those maladaptations result in increased mortality risk. Without going into the weeds on what qualifies as high levels of exercise in terms of MET/week, its fairly safe to say that based on our current knowledge, running is not unhealthy for those who do not have preexisting cardiovascular problems.
The arthritis/osteoporosis issue hasn't been that well studied. The majority of the research suggests that there is a u-shaped curve -- a little running is better for bone and joint health than none, but a lot is worse than a little. That being said... the risks are pretty low for those without preexisting conditions, a history of knee injuries, genetic predisposition, etc.
I think the bigger and more interesting question is that off the effects of running in moderate to poor air quality. There has been some really interesting research recently that has shown that exercising in even moderately poor air quality can completely negate any benefits of the exercise.
I was asking more about long term running in terms of miles a week. Like how will running 60 miles a week for say 3 years affect your long term health.
I'm 63, I've been running 50+/- per week for 50 years. I'm very healthy. Get blood work and a follow up every year.
My family history is diabetes, heart issues, the works. I have none of that. My last visit my doctor said that realistically, I'm as healthy as a healthy 45 year old and as fit as a healthy man much younger.
I've read studies about how running may be unhealthy- well, not for me.
I always wonder who they're studying. I have friends who took up running in their 40's + and jumped into marathons, get injured, very often they lose weight then go back to unhealthy eating and drinking because they think they can because they "run".
Just keep the mileage moderate (I think even up to 80 is fine) and eat healthy (along with the fun food).
What age did you start participating in marathons and other races? How many years have you been running? You mentioned that running on the treadmill feels more physically taxing. Have you noticed a general decline in your running performance and milage as you aged?
Thanks for pointing out the Air Quality issue. I never considered that because I typically ran along canal trails with no traffic. But since COVID my local area in Florida has experienced a population boom and I have also been running more often along roads. The traffic down here has become more elevated and I'm beginning to notice the automobile exhaust.
The US government manages an Air Quality Index and most areas of the US are designated as "safe" including my area which has readings in the 20s. But this index doesn't really provide reassurance because even if your area has a low AQI reading that does not matter of you happen to be running along a busy road. You'll still breath in that disgusting exhaust before it disperses into the atmosphere.
If you an obese smoker POUNDING THE PAVEMENT beet red in the face huffing and puffing, then yeah, that's not very healthy.
But if you're a natural born slow twitch ectomorph elve person gliding effortlessly over grass barely getting their heart rate over 65% max, then that is probably ok.
Science experts always gush on about how HEALTHY walking is. But the effort level of my running is the same effort level of a normal fat American's walking.
Stop giving out health advise that you do not know is correct or not. You are just repeating what you want to be true because it is what you do. You would do everyone a big favor by just zipping it.
You say that research into the links between running and arthritis and other orthopaedic issues is scarce…
Well let’s ( for argument’s sake) say that there is a correlation…( a recent thread I saw in this forum about hip resurfacing from a long time enthusiastic, and good, runner, is an example that there might be)
This then presents a dichotomy / paradox for runners looking to improve their performance. Enough running to improve times…but too much that might result in short term, or even worse, long term and lasting injuries.
The problem that any runner faces is that, unless you are so finely tuned into the signals that your body is giving you ( and many aren’t…or don’t listen in their quest for PB’s) then you don’t know whether you’ve crossed the line…until it is too late.
To me, the further you go down the line of performance, the less healthy it becomes. Past a certain point, and I think it’s a fairly low one, the relationship between fitness and health takes on an inverse relationship of increasing proportions.
What age did you start participating in marathons and other races? How many years have you been running? You mentioned that running on the treadmill feels more physically taxing. Have you noticed a general decline in your running performance and milage as you aged?
Picked up running after quitting smoking at 30, been running for 29 year's with only a couple months off here and there over the year's due to injuries. Yes, I've definitely slowed down over the years just like everyone does. I'm okay with my time's for the effort I put in. Milage is half of what it was 10 years ago.
It just seems some days are alot more stressing on the body. I run by how I'm feeling, some days hard and some day's easy.
What age did you start participating in marathons and other races? How many years have you been running? You mentioned that running on the treadmill feels more physically taxing. Have you noticed a general decline in your running performance and milage as you aged?
Picked up running after quitting smoking at 30, been running for 29 year's with only a couple months off here and there over the year's due to injuries. Yes, I've definitely slowed down over the years just like everyone does. I'm okay with my time's for the effort I put in. Milage is half of what it was 10 years ago.
It just seems some days are alot more stressing on the body. I run by how I'm feeling, some days hard and some day's easy.
Since you have prior history of smoking make sure you're getting regular checkups for your heart and lungs.