In Reply To:
Back in those days, Carlos Lopes had the world record and went on to win the Olympics. His pre-race meal was steak, eggs and french fries. Obviously I advise that to all my athletes.
And because he ran 2:07, I win our little contest, under your own set of rules.
Not my rules.
the dataset I prefer to use is the average marathon times in the 70s when people drank a little water during a marathon and today when they have 50 different sports drinks, capsules, GUs, Gels, Pastes and Powders and the end result are tens of thousands of 6 hour marathoners and very few guys sub 2;15 anymore. As i said there are no studies linking slower times to the increased use of nutritional products, but if as you say they are sooooo useful wouldn't we see just a little bit of an average improvement in race times?
And as for the people who consistently run sub 2:15, our Kenyan brethern, how many of them do you see lugging fanny packs of GU and Powerade on training runs or races. They load up before going out to run.
Nutritional products have their place, they play a role, but its a fraction of what they tell you it is. If you have a good breakfast before your long run you'll get through it just fine without a GU every 45 minutes and you;ll probably benefit a lot more from the run by training your body how to burn its stored fuel in an efficient manner instead of constantly injecting sugar and then crashing 15 minutes later.
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"A society is defined not only by what it creates, but by what it refuses to destroy."
John Sawhill