all is not lost I'm sure. Does your diet give you any ideas of how much weight you might lose in a couple of weeks, say? You could keep the running on stand by, just do a few miles a week, until your weight is down a bit and/or you're ready to pick up the Marathon training programme, at which point you could switch to a diet including carbs.
But, bear in mind that if you are training for a Marathon, you'll be logging at least 20 to 30 miles a week when your programme is in full swing, and more at the end. For most people, that's 2000 to 3000 calories, and for a lump like me its 3000 to 4500 calories. A pound of fat has about 3500 calories, so your running, when combined with a sensible diet, should allow you to lose a pound a week, more or less - a sensible rate.
Also, why not visit a sports nutritionalist? Try a Google search in your area - you can quite often find them associated with sports injury clinics / physios etc. They will give you some sound, well informed advice about combining training with weight loss and tell you some of the ins and outs about avoiding feeling hungry and bingeing (my weekness: I'll starve for hours, get home and pig out, when I should snack on lower calorie foods that keep my blood sugar at the right level to keep hunger at bay).
This might be useful:
Q+A: When I run I eat more. How do I lose weight?By Sarah SchenkerOur experts answer real-life questions
<!-- Weight management Increased volume training --><!-- Title: Q+A: When I run more I eat more. How can I lose weight? Standfirst: Our experts answer real-life questions Author: UAN: RW issue: jun02 Keywords: weight -->
Q I’m planning to run a marathon, but I’m also trying, unsuccessfully, to lose weight. When I run, my appetite increases, and I find that I eat more and put on weight rather than lose it. What can you suggest?
Perhaps surprisingly, losing body fat and training to achieve faster times do not always go hand in hand. As a rough rule of thumb, a 10-stone runner burns 100kcal per mile. However, during low-intensity training, your body uses a high percentage of fat, and less glycogen. As the intensity increases, the amount of fat burned decreases only very slightly, but the glycogen use rises sharply on top of that.
Unfortunately, using up your glycogen stores with hard training sessions can leave you ravenous, and the potential is there to overeat no matter how healthy the food is. However although five miles at a hard pace may leave you starving, five slower miles will burn the same amount of energy and should leave you less hungry.
The bottom line is that if you take in more energy (calories from food) than you have used up, the excess energy is stored as fat, making weight loss impossible. From what you’ve said, it sounds as though your diet is pretty healthy and well balanced, so just use your willpower to make sure your portion sizes aren’t too big.
Dr Sarah Schenker, British Nutrition Foundation registered sports dietician
Posted: 22/01/2009 at 09:32