Want to know what to watch out for? Read on...
One important thing sports drinks should provide is energy (calories). Sugar is the most common ingredient sports drinks use for energy. It may be called sucrose, or lactose, or glucose, or fructose, or maltose, or maltodextrin, or dextrose, or amylopectin starches, or any one of a huge number of names. All are a great source of quick energy for your muscles. But be careful; sugars by themselves usually have very high "glycemic-index" (GI) values; this means that they cause a blood-sugar spike that will burn off pretty fast (leaving you tired later on), prevent your body from burning fat instead, and over time can even cause insulin resistance (as in diabetes!). Think you're immune to insulin problems just because you're a thin athlete? Think again.
Don't get me wrong; high-GI foods have their place, and I definitely feel my workouts are better when I consume high-GI foods. They are also very important for post-ride recovery so you can be ready for your next workout (especially if, like me, you ride twice a day). Just don't overdo it.
How do you know what's the right GI? Read on...
Some examples of sugars, and their GI values:
- Fructose (24 GI)
- Lactose (46 GI)
- Honey (55 GI)
- Sucrose (61 GI)
- Glucose (93 GI)
- Maltose (105 GI)
Not to "pick" on any specific brand of sports drink, but I have a big bucket of Cytomax Performance Drink right here that is mostly "amylopectin starches." Sounds fancy, but it's simply the major component of starch, e.g. wheat. It's also very high-GI. This is followed by maltodextrin, another very high-GI food (the same as maltose, actually). How about Hammer Heed? More maltodextrin. Gatorade Thirst Quencher? Glucose, sucrose and fructose. These are no higher-GI than other sports drinks, just typical.
By the way, carbohydrates are the only foods that raise GI. Proteins and fats are all zero (0) GI. Meat, eggs, lard, butter, etc. are all zero-GI, or very close to it.
What's also important to understand is the "glycemic load" (GL) of a given meal. This is the cumulative affect of the GI of each ingredient, and their quantities. For example, a high-GI food combined with a low-GI food will yield a moderate-GL meal. It's fun browsing a list of typical foods and their GLs. Kind of an eye-opener. Some examples of high-GL foods:
|FOOD||Serving size (grams)||Glycemic load|
|Lucozade®, original (sparkling glucose drink)||250||40|
|Macaroni and Cheese (Kraft)||180||32|
|Spaghetti, white, boiled 20 min, average||180||27|
|Baked russet potato, average||150||26|
|Bagel, white, frozen||70||25|
|Vanilla cake made from packet mix with vanilla frosting (Betty Crocker)||111||24|
|Cranberry juice cocktail (Ocean Spray®)||250||24|
|Fanta®, orange soft drink||250||23|
|White rice, average||150||23|
|Quick cooking white basmati||150||23|
|Cream of Wheat™, Instant (Nabisco)||250||22|
|Pizza, plain baked dough, served with parmesan cheese and tomato sauce||100||22|
|Coco Pops™, average||30||20|
The traditional food of cyclists is things like pasta, bagels, bread, cookies... all high-GI (the GL is even higher, because we tend to eat huge mountains of the stuff!), and all able to induce insulin resistance and defeat your fat-control plans.
You don't have to give any of these foods up, but try to eat them in moderate amounts, and combine them with low-GI foods, like proteins, as much as possible. See that Snickers Bar up there? Surprised it's lower-GL than rice or macaroni? Well, it has protein from the peanuts that keep the GL lower... uh, and tons of fat that is also low-GI; that may not be the best way to lower the GL of a meal!!!
Contrast that with low-GL foods (meats etc. not included because they are all zero-GL):
|FOOD||Serving size (grams)||Glycemic load|
|Hummus (chickpea salad dip)||30||0|
|Soy beans, average||150||1|
|Milk, full fat||250||3|
|Green peas, average||80||3|
|Tomato juice, canned||250||4|
|Ice cream, premium||50||4|
|Pear, canned in pear juice||120||5|
My favorite post-ride food is dried dates, which are at the top of the GL list, but I usually eat them with nuts (zero-GI) and follow them with a protein shake for a moderate-GL recovery meal. See? It's easy to eat smart!
Oh, back to sports drinks...
My favorite is Accelerade Advanced Sports Drink. Why? Because it "combines carbohydrate and protein in a patented 4:1 ratio." That means it's lower-GL than other sports drinks. No, they don't pay me to say that... I wish they would though.
On a personal note: I used to get the afternoon blahs all the time. You know; about 2:00 PM I'd be sitting at my desk, nodding off over my keyboard. Maybe that starchy sandwich I had for lunch was to blame? Or the starchy cereal I had for breakfast? When I started eating lower-GL meals that blah feeling went away and never came back. What a relief!
If you want to feel better, have more energy, be healthier and ride faster, be conscious of what you eat and how it affects you. That knowledge will help you in all areas of your life.