Fitness Nutrition Guidelines
Some people often wonder what a runner's diet is made up of. Here's an interesting article that shows how food is important in running as it is related in performance.
From Jesslyn Bass
If you think of your energy needs on an hourly basis instead of a daily basis, you may realize that your eating your biggest meal and then doing nothing, whereas you hardly eat at all before your runs.
If you run daily, you can expect to need to eat about every 3-5 hours. Even if you don’t run daily, 5 hours is an acceptable amount of time between meals/snacks. It’s important that you avoid long periods without eating to avoid wide swings in your blood sugar levels, which aren’t good for your body or your running. If you commit to eating every 3-4 hours and plan ahead to have healthy foods when you need them, it is much easier to make the commitment to eat healthier and stay away from the vending machine. Remember, skipping meals or skimping on calories does not support the goal of training with adequately fueled muscles.
As a runner, our bodies need more fuel, thus more food, than the average sedentary person. It is a good assumption that if you are running 15 or more miles per week, you should not be consuming less than 2000 calories per day, even if you are trying to lose weight. (Remember, when you eat them during the day is important too.) If you running 25 miles per week you should average closer to 2500 calories a day.
Now for the meat of the subject, what to eat and what not to eat. Think of what you consume as a list. Fruits and vegetables should be on the top of the list (meaning you eat the most of those per day), then grains and legumes, followed by lean meat or soy products, then lowfat milk products, and, the very least, sweets and fat. Occasionally, but not always, listen to your cravings. They could be a result of too low a fat intake or low blood sugar, both common problems among runners who don’t eat enough. So, if you have nutritious cravings, give into them. A steak and potatoes night isn’t going to throw you off your diet. Perhaps add a green salad or have fruit for dessert and you’re set; craving eliminated. But if you are constantly craving candy or donuts, it’s not likely your body needs them. Have a piece or two of candy a day, but try to cut out other sugars. As far as donuts, well, don’t give in often, never if possible.
Carbohydrates convert in our body to glucose. Glucose is used by the body for energy or stored in the muscles and liver as glycogen, which is used later for energy.
Protein builds muscles and tendons, repairs broken down muscles, and regulates hormones. Every part of our bodies are made of protein. The muscles, bones, blood, immune cells, tendons, ligaments, skin, and hair all are made of protein. Runners need more protein than sedentary people because we have more need for muscle repair and recovery, which is proteins biggest job. Because of this, a deficiency of protein causes fatigue and slow recovery. To get an adequate amount of protein each day, we should consume approximately 5-6 ounces of lean meat (notice: ounces not servings, and lean meat, not greasy hamburgers) or 2-3 servings of soy per day. The 3 servings of lowfat dairy you should eat will help with your protein as well.
Eating a very lowfat diet is just as bad as eating a very high fat diet. Lowfat diets contribute to moodiness and depression. As runners, our bodies need fat. Fat helps us feel full. A deficiency of omega-3 fats (found in fatty fish and flaxseed oil) leads to higher risk of heart disease and arthritis. While a diet rich in monounsaturated fats cuts cholesterol and heart disease risk.
Trans fat, the worst of the fats, raises LDL, bad cholesterol, and lowers HDL, good cholesterol. Saturated fat, still a net bad fat, raises both HDL and LDL. But our bodies do need saturated fat in small amounts. You don’t have to try to get saturated fat though, it will find you. Saturated fat is found in whole milk, butter, cheese, ice cream, red meat, chocolate, and coconut products. Trans fat is found in most margarines, fast foods, and vegetable shortening. It is also found in many many prepackaged, processed foods. You should try to avoid processed foods such as chips and crackers, fried foods especially those that have been deep-fried, and baked goods listing “partially hydrogenated vegetable oil”. Saturated fat should not be more than 10% of your diet. Trans fat should be kept to the smallest amount possible.
Polyunsatureated fat lowers LDL, which is bad cholesterol, and raises HDL, which is good cholesterol. Polyunsaturated fat is found in corn, soybean, safflower, and cottonseed oil, as well as in fish. Omega-3 fats are polyunsaturated fats.
Monounsaturated fat also lowers LDL levels and raises HDL levels. Monounsaturated fats may also reduce risk for several kinds of cancer. It is found in olives, olive and canola oil, avocados, and nuts. Now that we understand more about what we should eat, let's not forget the much-overlooked topic of what we should drink.
If you run for 60 min or less, water alone should be fine for your hydration. If you run for more than an hour at a time, you’ll need to replenish electrolyte as well. (Sports drinks and energy gels usually have enough electrolytes to keep you covered.) Doing this will improve your performance by delaying dehydration and maintaining a high blood-sugar level during exercise. It also lowers the risk of catching a cold by boosting your immune system.