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Back of the Pack: A matter of the heart

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A matter of the heart

Comments (5)
By Peter Hadzipetros

For one-tenth of one per cent of North Americas population, this is a very special time of year. Fall marathon season is about to hit full stride.

Every year, more than 400,000 people finish marathons on this continent.

A few will die trying. And those deaths will make headlines, unlike the countless deaths on those same days that will result from bad diets coupled with a sedentary lifestyle. Its something Ive written about before, maybe more than once.

A study from the early 1990s suggested one person in 50,000 will suffer an acute heart attack or sudden cardiac death during — or within 24 hours of — running a marathon or taking part in any other type of exercise that lasts three hours or longer.
Other research suggests that there is one death per 800,000 person hours of running or jogging - in males aged 30-64 who have not been diagnosed with heart disease.

Exercise and death have been the focus of more and more researchers lately. Earlier this year, the European Heart Journal published a study that found that amateur marathon runners who ran less than 64 kilometres per week in training showed signs of cardiac dysfunction after the race. For some, the abnormalities stuck around for a month before going away.

People who put in at least 72 kilometres a week showed no signs of trouble. The more you train, the fitter you get, the less likely you are to stress your heart. Of course, all bets are off if you have a pre-existing condition that you werent aware of — which tends to be the case in virtually all strenuous exercise deaths.

Prof. Jack Goodman of the University of Toronto is taking that research a step further. Hes looking at heart function during prolonged exercise, focusing on what might trigger cardiac fatigue. Hell be particularly watching for the effects on older runners. Goodman says preliminary work suggests prolonged exercise may lead to less effective heart function in the left ventricle.

He — and other researchers — are not saying dont exercise. What they do suggest is that knowing the condition of your conditioning is critical to exercising safely, as is making sure your heart is healthy.

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Comments (5)

michelle

alberta

What does a modern marathoner have to prove? What does any sport participant have to prove? After a guy gets in a fight on the ice...he doesn't look too happy? Nose smashed, teeth busted...and there he is the next day back on the ice. Your body will wear out regardless of the exercise or non-exercise you choose...it's called mortality.

Posted September 11, 2006 05:33 PM

David Ferrier

Edmonton

I'm curious: what message is it modern marathoners deliver, and to whom? As I commented before, my philosophy is if I never use my body, it will never wear out, so I'm not a potential marathoner. Running in marathons may amuse others, although when they finish it's not easy to determine from their expressions their degree of enjoyment.

Posted September 11, 2006 01:26 PM

JohnHenry

A couple of years ago, at age 54 or so and in the best shape of my life after a few seasons of timber criusing,forest fire fighting and cross country ski-ing five times a week, I wanted to try a marathon.I have run 1/2 Marathon distances many times and thought it would be easy to ramp up my training. However after a few months I found that about 30 km seems to be my limit. After that amount I am usually in pain or so exhausted that I cannot go on. So I reasoned that it can't be doing me any good and I gave up on the idea. I have watched horribly overweight,and out of shape people straggle to the finish line at the Penticton Ironman races and wondered both how and why they did it.I have known people who trained for the ironman,completed it and then returned to their normal sedentary lifestyle.I just don't see the point. I exercise because I enjoy it. If I am not in some kind of shape then I can't enjoy those activities that make life worth living-hiking,ski-ing ETC. I feel sorry for all those who are driven by their egos to overacheive.

Posted September 10, 2006 01:44 PM

Melanie

Toronto

I agree with the comment above, particularly with reference to summer marathons. I don't know when that UK run was but I'm shocked that some marathons take place during unsafe temperatures and extreme heat (with the exception of races for elite runners who have trained for high temperatures with doctors, etc). Some runners I talked to who ran Ottawa this year told me of runners collapsing from heat exhaustion just within yards of the finish. Yet they were all more concerned about slower time than keeling over from heat stroke. Only one of the runners I spoke to said they would forego that race in future.

I think the greatest danger any runner faces is his or her own *ego*. For it's ego, not madness (as so many runners like to claim), that compels narcissist over achievers (successful in all other areas of their lives) to risk death for the sake of bragging rites. The more dangerous the conditions, the bigger the brag. It's that simple.

Posted September 9, 2006 11:32 AM

Ken Parker

A great posting.

This is an issue that needed raising.

In the UK last year, 4 runners dies in one race. The inquest found that they were not fit enough to do what they were attempting.

There are too many commercial entities selling the myth that everyone can do the marathon. The marathon has nothing to do with fitness. It is miles beyond what fitness runners should be attempting.

Marathons should implement a qualification process wo weed out the pretenders and save them from themselves.

Posted September 8, 2006 05:18 PM

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