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Another Study based on a very small group of Marathon runners.

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Another Study based on a very small group of Marathon runners.

Post by DonSoule on Wed Apr 02, 2014 6:19 pm

Study that claims:  Increased Coronary Artery Plaque Volume
Among Male Marathon Runners

http://www.msma.org/docs/communications/MoMed/Hearts_Breaking_Over_Marathon_Running_MarApr2014_Missouri_Medicine.pdf

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Re: Another Study based on a very small group of Marathon runners.

Post by RoadKillBill on Thu Apr 03, 2014 5:04 am

Evidence keeps piling up  Crying or Very sad  I guess the "good" news is that this has become a topic of significant interest, so we can expect more research that either refutes or confirms the hypothesis. I am hoping for the convenient truth as opposed to the inconvenient one, but would nevertheless like to know the truth.

OTOH, recommendations for 20 mins of walking 5x / week are lame and subtherapeutic (at least for psychoactive and BMI effects). If these studies ultimately conclude that marathon + is detrimental, I hope they also define a sweet spot north of the 100 mins/week guideline.

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Re: Another Study based on a very small group of Marathon runners.

Post by russwyd on Thu Apr 03, 2014 5:16 am

I'd read the text from this via an earlier weblink. I'm not a scientist, though I am very logical and I do specialise in academic research methods, and the study does raise a number of questions for me, beyond the very limited size of the data set:

1. There doesn't seem to be any indication of the level of marathon participation/achievement - whether these selected marathon runners are training to race their 25 marathons in two and a half hours or six hours.

2. It is unclear as to the activities of both data groups beyond running/not running - they have similar profiles in terms of smoking (!), diet, drinking etc apparently, but again I'm not sure whether these are dedicated health-freaks or casual marathoners or something in between.

3. Training seems to be based around a sample of 20-25 miles per week and 25-30 or more per week (both of which I would say would be generally insufficient to progress as a competitive marathon runner). So what about 50, or 60, or 100 miles per week? And what about those of us who run more than one marathon per year, and/or run a lot longer? Is the problem multiplied as a result?

4. If the study focusses on a 25 year activity period, then the runners under review are ageing - was their level of competition declining or increasing across those 25 years?

It's certainly interesting, and I wouldn't want to refute the findings just because I'm a pig-headed runner, but as I say it does raise more questions than answers for me.
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Re: Another Study based on a very small group of Marathon runners.

Post by Dave Tuttle on Thu Apr 03, 2014 6:59 am

Thanks for posting this Don. I'm certainly not qualified to interpret studies such as this but you have to wonder with only 50 very experienced marathoners (minimum 25 marathons) and just 23 couch potatoes being looked at.

My problem is that the media and all the people looking for a reason to not exert themselves use a few studies like this one to promote blanket assumptions that running is bad for you. This study specifically cites chronic high intensity long distance running as potentially harmful but most of us are not in that category.

  " Two recently published long-term large observational
studies independently showed that runners, as compared
to non-runners, have increased life expectancy. However,
these longevity benefits were most significant for those
obtaining moderate doses of running; individuals
chronically performing high-intensity long-distance
running appeared to lose the mortality benefit."
10,

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Re: Another Study based on a very small group of Marathon runners.

Post by Tom price on Thu Apr 03, 2014 9:22 am

It was an interesting read...A GROUP OF 50 runners who ran a marathon a year for 25 years, that had to be tough to find!   And why only 23 sedentary?  I know you don't need a huge number, but at least the same number would be helpful!  My take, I'll keep running, but because I like it, and not just for heart health.
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Re: Another Study based on a very small group of Marathon runners.

Post by russwyd on Thu Apr 03, 2014 10:02 am

I'm not clear how training for 30 miles per week and running one marathon per year equates to "chronically performing high-intensity long-distance
running". If that's chronic, what the **** do I do?!
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Re: Another Study based on a very small group of Marathon runners.

Post by Tom price on Thu Apr 03, 2014 10:09 am

Russ, I checked the dictionary, and there is no word for what you do!  :-)
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Re: Another Study based on a very small group of Marathon runners.

Post by Gary E on Thu Apr 03, 2014 10:27 am

Great job on analyzing everything, Russ. I too was astounded by the fact the marathon group had 52% smokers (hopefully it was prior to their taking up running, but still...???), and I also question their intensity if they were running less than thirty miles per week. Those of us that run marathons well, or used to in my case, would seldom train less than 50 or 60 miles per week unless they were tapering prior to an event.
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Re: Another Study based on a very small group of Marathon runners.

Post by echoguy on Thu Apr 03, 2014 2:53 pm

russwyd wrote:I'm not clear how training for 30 miles per week and running one marathon per year equates to "chronically performing high-intensity long-distance
running". If that's chronic, what the **** do I do?!

I'm with Tom on this. I am not sure there is an English word for what you do Russ! Rolling Eyes 

Of interest, this little study from Boston came to my attention today.

http://www.medicalnewstoday.com/articles/274749.php

I also agree with Bill. I want to know the truth. If it ends up being an "inconvenient truth", well, I will have to see how that might alter my lifestyle. Until then, I am going to enjoy all of the endorphins that I can.

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Re: Another Study based on a very small group of Marathon runners.

Post by Dave Tuttle on Fri Apr 04, 2014 7:58 am

Dr. Larry Creswell's comments on this study:

http://www.athletesheart.org/2014/04/in-the-news-marathoners-and-coronary-plaque/


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Re: Another Study based on a very small group of Marathon runners.

Post by Rachel August on Fri Apr 04, 2014 8:53 am

Tom price wrote:My take, I'll keep running, but because I like it, and not just for heart health.

I'm with you Tom!!!! I need ALL the endorphins I can get!!!

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