Posts Tagged ‘bodybuilding’
Exercise requires energy, pure and simple. But where does it come from? The answer is glycogen. But what is it?
When we digest food we’ve eaten, the carbohydrates are broken down by our bodies into glucose, and then the glucose is stored in our muscles . . . as glycogen. During periods of exercise, this process reverses, and glycogen converts to glucose once again, so that is may be used for energy. How long we “last” is greatly influenced by how much glycogen we have stored in our muscles.
Exercise that lasts less than 90 minutes is typical for most of us. Carbs typically provide 40-50% of our energy in the beginning stages of moderate exercise. What the body naturally stores will sustain you through a workout of this length.
But as the intensity of physical activity increases, the body’s carbohydrate consumption increases too. For events over 90 minutes, eat a heavy-carb diet for 2-3 days prior.
Picture the muscles like porous rocks. The more glycogen is filling all those crevices, the more energy reserves we have to draw upon. This is why cyclists, marathoners, triathletes, soccer players and other endurance athletes excel when they’ve pre-loaded for 2-3 days with about 70% carbs. Glycogen is the fuel which sustains the body in highly physical situations.
Have you heard the term “hitting the wall?” This refers to an actual event in the body, the depletion of glycogen. Once stores are gone, energy is truly kaput; you have no way to generate more.
Don’t assume you should eat a high-carb diet all the time, though, even if you exercise heavily. Once glycogen fills all the areas where reserves can be stored, any extra that is produced is stored as body fat. Eating too many carbs causes this excessive glycogen production.
Another danger of overdoing carb consumption: you can unwittingly “train” your body not to utilize essential fatty acids that come from fat. Not only does fat transport cholesterol and play a role in blood clotting, it helps us absorb vitamins and produce hormones.
Conversely, eating too few carbs forces the body to use protein for energy. The body will actually start to break down protein – the building blocks for muscles, bone, and other tissues – meaning you put yourself into a sort of self-cannibalization. Your body starts to feed on its own muscles and you lose muscle mass. This is also tough on kidneys. Not a pretty thought.
So strike a happy balance between protein, carbs and fat, and remember lean protein, high fiber and unsaturated fats as your first choice. It’s all about balance and timing: my 80/20 rule. Athletic training is 80% nutrition, 20% training. Get the food right, you have a bonafide mega-advantage over the competition.
Michelle Ciuffetelli, a Certified Personal Trainer in Fort Myers, Florida, says her favorite carbs are oatmeal (filling and a good source of fiber); sweet potatoes; fruit (a great snack); Arnold Sandwich Thins (good fiber); and Flat Out wraps (taste great, can wrap anything).
Now get moving. That’s a wrap!
If you’re going to mess around with whey, there are some things you need to consider. And recent news makes the topic even more important for those adding supplements to their shakes.
Remember Little Miss Muffet? Nobody ever told us, but she was lactose tolerant. How do we know? Because she was happily eating her “curds and whey.” Those of us not raised in Wisconsin are less likely to be familiar with these two words but they’re both dairy products.
Curds are made by curdling milk with an acidic substance like vinegar or lemon juice. The liquid portion which is drained off is whey. Whey is also a liquid by-product of cheese production. After childhood poems, the most popular exposure to whey is in “Whey protein,” commonly added to shakes by athletes, exercisers, body builders and people trying to gain muscle. It might surprise you to learn that whey is often hiding in our food products, even “non-dairy” items which are processed and prepared.
This is part of what makes trying a dairy-free lifestyle so difficult. To help sort through the nutrition labels, use this comprehensive list of the most common dairy ingredients present in foods. Whey is present in a variety of processed and prepared food products. Whey protein is composed of lactalbumin and lactalglobulin, and is found in both food products and health supplements. Other common forms of whey present in food products are sweet whey, whey powder, whey protein, whey protein concentrate, and whey protein hydrolysate.)
Here’s some great news for active adults. Even if they’re lactose intolerant, athletes, exercisers, body builders and people who want to gain lean muscle can still consume protein by using collagen instead of whey. It can be taken before and after activity: to pre-load before a workout, or to help with recovery after exercise.
Check the label and be sure the collagen protein you are choosing contains NO added whey. Some “newer” collagen proteins, such as AminoRip, contain NO lactose, NO dairy, NO carbs, NO fats, NO sugar, NO high fructose corn syrup (HFCS), NO sorbitol, NO gluten, NO soy, and NO whey.
Here’s another reason to pay attention to your choice of protein supplement. Consumer reports testing found that due to contamination, some “protein shakes” exceeded United States Pharmacopeia (USP) standards for exposure to heavy metals when three or more servings were consumed a day. Failing the heavy metal test were some of our most popular protein shakes, including EAS’s Myoplex and Cytosport’s Muscle Milk.
It’s easy to forget that whey protein is a dairy product, and important to remember that collagen is an alternative protein. If a person is, in fact, lactose intolerant, then ingesting whey protein can cause him or her to experience great discomfort with symptoms like abdominal discomfort, belly cramps, diarrhea, nausea, itch or watery eyes, and even possible asthma attacks. The more you consume, the more severe the symptoms would be.
Whey protein doesn’t cause the problem, but because you’re taking large amounts in a shake, symptoms can manifest themselves for the first time in people who generally are capable of handling small amounts of lactose. Lactose intolerance is different than a milk allergy, but people often confuse the two because the symptoms can be identical (bloating, stomach pain). These two conditions are not related, however. It’s the immune system which is reacting to a milk allergy.
Lactose intolerance, on the other hand, is all about the digestive system. Lactose intolerant folk don’t produce enough of the enzyme lactase, which is needed to break down the sugar in milk. Amazingly, it’s estimated that 75% of all people decrease in production of lactase during adulthood. The intolerance really ramps in during childhood, though, particularly for Mexican Americans who jump from 18% at age two to a whopping 47% by age 10. That’s a lot of potential tummy aches.
Non-dairy products may also contain lactose. If you know – or even suspect – that you’re lactose intolerant, then spend some time reading product labels. Any of the following ingredients mean the product has lactose: dry milk solids, nonfat dry milk powder, milk by-products, curds, and whey. It’s also good to know that dairy products which are “fat reduced” or fat free” generally present higher lactose, as do low fat foods, which often incorporate dairy solids.
I think I’ve milked this topic for all it’s worth and now I have a stomach ache. See you again next week.
Whether you are establishing a new exercise routine, increasing your fitness or looking for ways to maximize your existing plan, your body requires proper nutrition and hydration before, during and after you exercise.
Nutritional guidelines specific to sports, cardiovascular and wellness nutrition are designed to help you understand how much, how often and what kind of nutrients your body needs to improve performance and recovery.
For example, before exercise, it is important to consume a carbohydrate-rich snack or meal, along with small amounts of protein to help build and repair muscle tissue and reduce post-exercise muscle soreness. Low-fat and low-fiber foods are best to ensure optimal digestion.
Three to four hours before exercise, you should eat and drink a small meal or snack. Ideas may include:
- Peanut butter and honey on toast with an instant breakfast drink;
- Fruit and yogurt cereal with low-fat granola;
- Oatmeal with brown sugar and almonds, skim milk and a banana; or
- Turkey and cheese sandwich with fruit and a sports drink.
In addition, approximately 30 to 60 minutes before exercise, you should eat a light snack such as a piece of fruit or a small jam sandwich. Also, drink plenty of water or a sports drink.
Nutrition and hydration during exercise also is important, particularly during prolonged exercise such as a marathon or long bike ride. This requires the proper mix and timing of fluids, carbohydrates and electrolytes. Too much can result in cramping or other intestinal problems. Too little hydration can cause dehydration, fatigue and impaired performance.
Easily digestible foods such as a banana, low-fat granola or nutrition bars are recommended during endurance training and events. In addition, you should always drink plenty of water or sports drinks that contain carbohydrates and electrolytes to help speed fuel to muscles.
For short duration exercise, less than 60 minutes, water is a good choice to drink before, during and after exercise.
Following exercise, eating for recovery is important to restore fluid and electrolytes lost in sweat, replace muscle fuel utilized during activity and to provide protein to aid in repair of damaged muscle tissue and to stimulate development of new tissue.
If you have two training sessions per day or your next training session is within eight hours, nutrition recovery is crucial. Ideas for recovery snacks and meals include the following:
- Fruit and yogurt smoothie;
- Sports drink and nutrition bar;
- Graham crackers with peanut butter, low-fat chocolate milk and banana;
- Whole wheat pita sandwich with turkey and veggies; or
- Rice bowl with beans, cheese, salsa, avocado and whole grain tortilla.
A nutritional plan tailored to help you achieve your personal exercise goals will help you maximize performance and results. Experiment with foods and hydration to create a custom plan that what works best for you. A registered dietitian can assist you in designing a program based on the amount and intensity of your exercise schedule and your desired results.
Whether you participate in sports activities, aerobics, weightlifting or a competitive fitness program, following proper nutritional guidelines is critical to helping you achieve your goals.
You can improve performance by delaying dehydration
Hydration is often left out of nutrition, but it shouldn’t be. Staying hydrated is important not only to improving performance in sports and other activities, but it plays a vital role in helping maintain a balanced diet and healthy lifestyle.
Necessary to the healthy function of all internal organs, water must be consumed to replace the amount lost each day during basic activities. Water is also proven to aid in weight loss. It helps you feel full so you eat less, quenches thirst without adding calories and allows your body to function at its top capability.
Keeping hydrated helps muscles look more toned, a look that many people desire. Being hydrated also helps your skin look and stay healthy.
Water regulates the body’s temperature, cushions and protects vital organs, and aids the digestive system.
In 2004, the Food and Nutrition Board released new dietary reference intakes for water. It is recommended that women consume 2.7 liters daily and men consume 3.7 liters through various beverages, 80 percent, or in food, 20 percent.
Active individuals need even more, particularly if they’re exercising in hot weather. This is especially important during the 24 hours prior to vigorous exercise. During exercise, our body produces more heat, causing sweat to cool us down. When we sweat out our water supply, we must consume more water to keep our core temperature down.
In one hour of exercise, the body can lose more than a quart of water, depending on exercise intensity and air temperature. If there is not enough water for the body to cool itself through perspiration, the body enters a state of dehydration.
For people who regularly exercise, maintaining a constant supply of water in the body is essential to performance.
Dehydration leads to muscle fatigue and loss of coordination. Even small amounts of water loss may hinder athletic performance.
In a dehydrated state, the body is unable to cool itself efficiently, leading to heat exhaustion and possibly heat stroke. Without an adequate supply of water, the body lacks energy and muscles may develop cramps. To prevent dehydration, you must drink before, during and after a workout.
During exercise, water is the best fluid replenisher for most individuals, although sports drinks help replace lost electrolytes during high intensity exercise exceeding more than 60 minutes. Keeping hydrated can improve performance by delaying dehydration and maintaining balanced blood-sugar levels during exercise. It also lowers the risk of catching a cold by boosting your immune system.
Drink 17-20 ounces of water two to three hours before the start of exercise. Drink 8 ounces of fluid every 20 to 30 minutes prior to exercise or during warm-up. Drink 7 to 10 ounces of fluid every 10 to 20 minutes during exercise. Drink an additional 8 ounces of fluid within 30 minutes after exercising. Drink 16-24 ounces of fluid for every pound of body weight lost after exercise.
Water is your best option. Tea (non-caffeinated and unsweetened) and 100 percent juice, not cocktail drinks, are good alternatives if you just need something else. Sports drinks are also good for your body during and after exercise.
Coffee and alcohol don’t need to be nixed completely, but should be consumed in very small amounts. Two cups of coffee a day isn’t going to help your body and scientific evidence suggests alcohol consumption can interfere with muscle recovery after exercise and negatively affect a variety of performance variables.
As far as options that you should stay away from, soda is at the top of the list. While drinking one soda probably won’t hurt you, it provides little hydration. In fact, frequent consumption of soda can be more harmful to your body than any of the other drinks listed above, with the exception of alcohol.
In the end, staying hydrated by drinking water throughout the day and especially during exercise is highly recommended to support good nutrition and healthy living.
Elaine Hastings is a registered dietitian and owner of Associates in Nutrition Therapy in Fort Myers. Contact her at Elaine@eatrightRD.com or visit her at AssociatesinNutrition.com.