Beginning to think I need more than water so bought some isotonic drink from Boots... but quite amazed at the calorific / carb etc value!!
So now panicing that if I drink this before a run I wont lose weight??
Would you say you use up 175 cal for 35 min run?
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http://www.home.connectnet.com/eoinf/index.html
and follow the calories link.
Either way the effect you want from running isn't so much the cals burnt during the run but the raised metabolic rate which will mean you burn more whilst resting as well. This is one reason why it is recommended to train in the morning since sleep slows your body down again - you get more effect from a morning run.
Karen
I take a lucozade drink on longer runs, but on *all* runs I take those lucozade sweets that you can buy in Boots and elsewhere. If I flag, I'll munch on as many of those as I need to. They're only about 25 cals each, but they give me a little sugar boost.
I tend to run before breakfast, just drinking some water and lots of water after. The other losses are taking up by the body as it is needed.
I would say, trust your body, it is made to cope with some extremes.
I'm up to about 12 miles in training and I drink Fruit and Barley (diluted to about half the recommended strength) before and after because it tastes nice and I know I can keep it down in large volumes, and water on runs over about 7-8 miles (nothing on shorter distances). Sometimes I eat sweets, but that's because I like them rather than for fuel.
For distances over the half-marathon, there's definitely a place for getting easily-absorbed carbs down our necks during the run, and isotonic drinks are one way of achieving this, but I wonder whether squash made up to the correct strength would do the same job a lot more cheaply, and from experience I know that I can only drink hypotonic fluids, in training and out (the pavements of London pprobably still have the dayglo stains to prove it).
For the Great North Run, I plan to have the family stationed around the course with weak squash and drinking-temperature coffee. If John Bingham can take a coffee-break during a marathon, it must be OK.
I'm with the cynics on this one. For all except the highly trained/long distances I see these products as smart marketing. And yes, Vrap, my own version of kevin falls for these hook line & sinker.
That said I do keep experimenting on longer (> 1hr) runs: Water, dextrose tabs to chew plus water, lemon Squash plus sugar.
try reading the sept RW articles: but I'm suspicious of "2% loss of bodyweight through sweating = 20% loss in performance" I'd be interested to read the Nature publication on that one.
I run 45-60 minutes and manage easily with two gasses of water before I go out. I have no experience as yet with over one hours runs. But I am very suspicious about the need of these isotonic drinks.
There are cheaper and lighter alternatives for when you are going extreme.
1/4 cup fresh fruit juice
3 3/4 cups water added
1/4 teaspoon salt
3-4 tablespoons sugar (to taste)
This sounds somewhat healthier and obviously you can add only as much sugar as you want for the drink to be palatable.
I am trying this one and will let you know if it works.
Fil
I have been aware of recommendations of half juice and half water (as fresh juice is hypertonic) It makes sense to add some salt to it.
Good luck with your half marathon,Fil