Heart rate
301 watchers
Apr 2023
4:01pm, 28 Apr 2023
20,109 posts
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Chrisull
absolute extreme end of marathon or greater distance racing, with huge training load, with insufficient recovery, over decades is at significantly increased risk, if at all. I don't agree and I don't think you can conclude that. There was no indication that the studies only applied to the extreme end of of marathon/greater distance racing. You'd have a sample size of 2 or 3, I'd suspect. And also it would defeat the point of the study. It just said lifelong, they wouldn't want only the outliers. |
Apr 2023
5:25pm, 28 Apr 2023
48 posts
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Charlesvdw
larkim, to answer your question about elite athletes, it is well established they have increased longevity. E.g. theguardian.com But it has also been shown in Tour de France finishers, Olympic athletes etc. |
Apr 2023
7:15pm, 28 Apr 2023
4,624 posts
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J2R
This is a paradox which has, I think, been mentioned before - lifelong endurance athletes have a higher incidence of atherosclerosis than average, but also fewer heart attacks and greater longevity.
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Apr 2023
8:03pm, 28 Apr 2023
49 posts
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Charlesvdw
Maybe the genetics that make elite athletes elite also confer some advantages concerning longevity. If that's true then it is not the sport itself that induces longevity. Correlation is not always causation. Personally I do believe it is the active lifestyle of these former athletes that makes them live longer. |
Apr 2023
8:27pm, 28 Apr 2023
2,669 posts
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Canute
It is possible, and I think likely, that life-long exercise has both beneficial and harmful effects on the body. I also consider it likely that for the majority of runners, the benefits outweigh the harm. Nonetheless, as implied by my earlier comments, I think there are things we can do to shift the balance in favour of the benefits. The simple answer is build up training load gradually and include adequate rest and recovery in the programme. It is probably worthwhile understanding the mechanims in order to do achieve this optimally.
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Jun 2023
12:20pm, 27 Jun 2023
21,402 posts
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larkim
Not entirely linked to the purpose of this thread, but I couldn't think of another one. Listened last night to the Infinite Monkey Cage episode which was on nutrition, prompted by a snippet which my better half relayed to me - that total calorie burn for an individual is pretty much the same whether or not we exercise, even to the extent that running a marathon doesn't really increase our use of calories. I found this tricky to reconcile, partly because I know that as I peak for mileage for marathon training I also habitually find my weight dropping a bit. The claim was made that this was "the latest science" on the subject. Seems to revolve around Dr Herman Ponzer and some research with a a hunter gatherer community in Tanzania - more details here runningmagazine.ca It certainly feels counter intuitive, though the compensating "use of energy" in the model suggested is "more" inflammation, "more" stress, "more" sex hormone development etc, so they become the factors that use the energy that otherwise can be used to run, and therefore runners experience less of those negatives - hence why running / exercise is good for you, but doesn't tend to produce weight loss. I don't really care about weight loss (other than a few lb here and there to make running easier!) though! |
Jun 2023
12:26pm, 27 Jun 2023
40,869 posts
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Nellers
I think it’s another of those things that is true across a large population but individuals will vary. I listened the Monkey Cage the other day and had a bit of a “that can’t be true!” Moment but I guess it’s there are going to be individuals who can and do lose weight and others who don’t when they increase their exercise levels.
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Jun 2023
12:33pm, 27 Jun 2023
20,403 posts
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Chrisull
Yes - New Scientist has been running articles on this for a bit too. Weight loss is bonkers. Apparently the mechanics of weight loss is oxidation of fat, the majority of which is then lost by CO2 (ie breathing out), although a lesser amount is lost as water. It's because we tend to assume that when we go running etc, we are converting fat into energy or heat, which we are not (and actually contradicts laws of physics). It's basically you should put back in less into your body than you breath out. Amount of carbon lost can be increased by exercise. (Oh and don't try breathing exercises to lose weight, I believe that's bunk, but you can see where people are seizing on that idea). |
Jun 2023
12:36pm, 27 Jun 2023
2,614 posts
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Big_G
This is vague and it’s just an idea, but I read years ago that the calories per mile for a person is more or less the same whether they run or walk. 100cals/mile was quoted as a guide (of course I know this is very broad brush and there will be many factors for any individual). Obviously, if a person runs, they burn more calories per hour. Larkim, do you do more mileage in marathon training and if so, and everything else stays broadly the same in terms of intake, would that explain your weight loss during marathon training?
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Jun 2023
12:45pm, 27 Jun 2023
47,066 posts
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HappyG(rrr)
I always think weight loss or not during significant increase in exercise is linked to whether or not I increase food/calorie intake correspondingly, because I usually do! Whether that's big meals after long runs, or sugar intake to support the runs, or whether it's a more general subconscious thought that I can eat what I want, because... marathon! I still don't get that description you have given up there larks, from IMC, that non-exercise consumes same calories. Of course, yes, in the sense of conservation of energy, first law of thermodymamics. But if the energy goes into fat production, then sure it's being "consumed" but by a process that most people who care about weight loss would consider a bad outcome. So more exercise consumes the same energy, but in order to bounce you along the street/hill, building muscles, increasing bone density, strengthening heart and lungs, instead of the same energy building fat, increasing stress on heart and other organs, inflammation and other compensatory physiological adaptations that are detrimental. Summary - exercise burns calories that you don't want to be used in damaging your body?  G
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