Archive for the ‘swimming’ Category
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!
How’d you like to burn 350-500 calories per hour, doing something that’s refreshing and widely available? If your answer’s yes, then go put on your swimsuit and keep reading. Swimming is great exercise, whether you do it casually or in a serious, “endurance sport” manner.
Triathletes must make diet their primary focus if they want to significantly improve their performance. But for any type of athletic conditioning, nutrition is at least 80 percent of the formula, and training makes up no more than 20 percent.
Keys to the 80/20 formula are quality, quantity, and timing of nutrients … learning not only what to eat but also “how and when” will maximize results in triathlons, multiple-sport activities, and even for recreational exercisers. Developing good eating habits every day can make the difference between great training/exercise/events, and just struggling through.
Note that I said “habits.” Eating well can become a habit over time, one you no longer have to think about, or feel burdened by in any way. Commit to the concept of positive, life-enhancing, sport-enhancing long-term change through diet, and over time, you will develop this good habit just as easily as people develop bad ones.
Now, back to the pool. Is there any truth to the phrase “no swimming until one hour after you’ve eaten?” Yes, a bit, but only if you’re planning on swimming with extreme intensity, as in a triathlon.
Recreational swimming falls in a different category. You, your children or grandchildren can all swim or play in the pool after eating. Frolicking with a full belly is perfectly safe.
In fact, if you plan to swim in the morning – especially just after rising from a night’s sleep – eat something. Engaging in vigorous exercise on an empty stomach will cause you to suffer. You’ll feel weak, possibly dizzy, perhaps sick to your stomach. Certainly your workout will be a poor one and most likely will have to be cut short.
After sleep, your blood sugar is low. So have a snack before you hit the pool.
Swimming is less demanding than running or cycling for pre-activity nutrition. Even fruit, toast or a sports drink will do, to elevate the blood sugar a bit. Hydration before or during swimming is not much of an issue because you won’t overheat in water, but hydration after swimming restores electrolyte balance.
In all three triathlon sports, post-workout nutrition should occur within 30 minutes of stopping, when the body is most receptive to carbs for replacing glycogen lost during the workout. Ingesting protein will help muscles recover and rebuild stronger.
Women swimmers especially need to be aware of the potential for iron and/or calcium deficiencies. Lacking either or both of these essential minerals will affect performance.
Remember the 80/20 rule and decide now to develop good habits. It does not matter how hard or how much you exercise; good nutrition and healthy eating habits are the crucial component. Next week we’ll discuss nutrition for cycling.
Over the next four weeks, I’m going to talk about proper nutrition for a variety of sports: running, swimming and cycling. Many Floridians participate in one or more of these physically demanding (but fun) outdoor activities. A few combine them for triathlons – my cap’s off to you.
And here’s the thing. The human body can excel at a demanding sport only when fueled correctly. This may shock you, but proper nutrition is at least 80 percent of the formula for successful exercise and athletic training.
Don’t be misled by my use of the word “training.” If you’re a soccer mom taking a lot of classes to keep your tush looking toned, you are training. Dads who cycle five nights a week to keep the effects of aging at bay are training. And, of course, if you’re an individual or team athlete striving for wins, records, medals or the like, you know I’m speaking to you.
But you can train seven days a week – devoting hours and hours of your life to your pursuit – and without giving your body what it needs to support and achieve those goals, you will not end up where you want to be, including in the weight department. You may not even come close.
Picture Kyle Busch on the track in Indianapolis, and his car without the right kind of gas and fluids. Nothing in his driving skills can overcome the fact that his vehicle is not fueled for the task, and your body is no different.
Sports nutrition has many components. Sure, it’s important what foods you include in your daily diet, be they carbs, protein, fats, sugar or liquids. Carbs and proteins both have specific functions. We must understand what our body needs, how it uses what we give it and how we can maximize what it naturally provides. This is how we learn to boost our energy reserves so we can train harder, build lean muscle and avoid storing fat.
As important as what an active adult eats is the timing of when it’s eaten. I’ll talk about how and why to “pre-load” for a workout, and how nutrition can speed up post-activity recovery. Much of our body’s healing from exercise takes place while we sleep, so nutrition for proper sleep is also critical.
Next week, we’ll start with nutrition for running. (If you spend time on the treadmill in your gym, this will apply to you.) All my running readers will gain a real footing on the road to success. It starts with nutrition.
Ever heard the term “Weekend Warriors?” These fun-loving, sports-minded folks work hard then occasionally decide to have some fun by participating in an activity that’s new (or old and dear). The problem is, their body isn’t conditioned through diet and exercise for what’s about to happen, and the result is often an injury … sometimes a bad injury.
Common catalysts for weekend warrior syndrome are spring thaw, reunions, holidays, turning 40, turning 50, New Year’s resolutions and your teen’s friends playing ball in the lot next door. There are abundant opportunities to “jump right in” and although your heart’s in the right place, you could pay a big price later.
I’ve fallen victim to this scenario myself. I work out on a regular basis and eat well, but recently I played a charity softball game, a sport that I used to play in my younger years … and I could not get out of bed on Monday. I also could not use my Blackberry because my hands hurt so bad.
Had I at least been doing some type of similar activity before that game, or stretching the body parts I knew I’d be using, I might have had a fighting chance. Changing from a flat gym floor to uneven earth or rolling trails or sloped beaches can also cause issues. Imagine what the 50th-birthday-but-20-mile-bike-ride might do to an office worker.
If we’re not used to using certain muscles, we make ourselves prime candidates for debilitating or highly irritating injuries. I was thinking about the various ways to keep the body prepared for the occasional odd activity, and came across a great quote on the Internet: “Men over 40 should be fit for their sport rather than using their sport to get fit,” it said. This surely applies to everyone contemplating a sudden, big burst of athleticism.
The easiest way to avoid injury is the one requiring the most discipline: don’t do too much of anything that’s new. Start out in moderation, play part of the game, do 5 miles instead of 20. You could save yourself a stress fracture or a couple of very uncomfortable weeks.
Flexibility and stretching are key, too, so if you know you have a new sport ahead, start working that part of the body, stretching daily, and always stretch after a workout to gain flexibility. A balanced diet and proper weight is always a good idea. Hauling an extra 30 pounds around a make-believe football field is tough.
Here’s another tip: A lack of magnesium can lead to muscle weakness and cramps. Magnesium is lost via sweat, so regular exercisers and even saunagoers need to take in enough magnesium rich foods or supplement magnesium. But after a spontaneous workout, you’d do well to have some on hand.
Weekend warriors can benefit from maintaining a healthy mineral balance. Think of magnesium as your “muscle mineral.” The FDA recommends 310-420 mg daily for most adults.
Here are a few magnesium-rich foods if, like me, you prefer a healthy diet to taking lots of supplements: 3 ounces of halibut, 90 gm; 1 ounce dry roasted almonds, 80 gm; 1 ounce dry roasted cashews, 75 gm; 1/2 cup cooked soybeans, 75 gm; 1/2 cup frozen spinach, 75 gm; 1 ounce mixed dry roasted nuts, 65 gm; 2 biscuits of Shredded Wheat cereal 55 gm; 1 cup instant fortified oatmeal, 55 gm.
I also like to keep resistance bands all around me: tied to doors, in my travel bag, in front of the TV, wrapped around the legs and arms of my chairs. A good 10-minute workout with bands can be great if done right.
So if your college roomie has challenged you to a tennis rematch from days gone by … start working the “pushing” muscles on your chest wall, and get your shoulder primed for action. Do some sideways motion drills, and start taking magnesium. If it’s been a while, you’re going to need it!
In my last column, I explained that whey protein is often a problem for lactose-intolerant people who are using a protein supplement. It’s easy to assume that a protein supplement is beneficial for only extreme athletes such as bodybuilders, but that couldn’t be farther from the truth.
Protein has many uses and supplementation is beneficial for a wide variety of users. They include the elderly; those with joint or degenerative diseases, or orthopedic conditions; the overweight; people who do heavy manual labor in their work, sport or hobby; those going through growth phases; people in physical rehab; men and women doing intensive training for a sport or competition; adults who work out on a regular basis; teen athletes who are trying to build muscle and strength; people taking symptomatic treatment for pain relief or inflammation; and anyone with pain resulting from excessive joint stress. Hardly anyone you know doesn’t fit onto that list somewhere.
The trick is getting that extra protein without absorbing a lot of extra calories, fillers or dairy products (as in the case of whey protein powder).
Collagen is a great way to get added protein. Did you know that collagen is the second-largest component of the human body after water? It’s a protein, and one found in muscles, joints, ligaments, tendons, bones and more.
Historically, physicians have used collagen to treat skin trauma, such as burns and wounds. But collagen also affects the hair, nails and overall healthy appearance of skin, which is why you see it advertised in high-end skin care products.
As we age, our bodies stop producing collagen protein, and sadly, it’s collagen that gives our skin elasticity. So the appearance of dry, wrinkled skin is really the lack of collagen. Supplementing your diet with a natural source of collagen protein doesn’t just make you more youthful looking, however. Collagen builds lean healthy muscle – the muscle of youth – as well as healthy joints and bones. Can you think of a better supplement to give the special elders in your life?
Collagen protein also helps aid in the repair of muscle tissue. Because a good workout or physical exercise is actually breaking down the body’s muscles, collagen protein assists in the rebuilding process. Collagen makes it possible to heal faster, simultaneously building leaner muscle, following a workout. Some will even find they sleep more soundly when taking collagen protein. Sounds better all the time, doesn’t it?
You may wonder why a person can’t just eat more protein and gain the same benefits. It’s about bioavailability. Protein in food form has calories, of course, and a healthy daily diet only contains so many. The bioavailability of the protein also comes into question. By the time your body works to chew and digest the food, you’re not getting nearly as much protein as the amount you started with on your plate.
A powder form can provide extra protein without as much work for the body, but comes with the added calories of what it’s poured into. A liquid protein is your best bet. Find one that’s small in calories, and better yet, hydrolyzed – or “predigested” – which simply means that you ingest it in its smallest form, with no extra work for the body to break it down.
I encourage you to join me – and my husband and my teenage son – and add a low-cal collagen protein supplement to your diet. You could be amazed at the changes you experience. See the developing abs on the teen in the photo? That’s my son Cody, who drinks a liquid collagen protein supplement and works out regularly.
- Elaine Hastings is a registered dietitian, sports nutrition authority, and and owner of Associates in Nutrition Therapy in Fort Myers, Florida. She can be contacted at Elaine@eatrightRD.com or by visiting Associatesin Nutrition.com.
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.