Breaking Down the Glycemic Index for Bodybuilding

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Aug 16, 2018
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Carbohydrates are the main source of macronutrient that are converted to glucose. Although if you go into strict ketosis your body will use fats as a fuel source through a process called gluconeogenesis. To measure the body?s glycemic index it is assigned a value from 0-100. A higher value means a faster blood sugar response.
glycemic-index.jpg


Moderate glycemic index foods are better for purposes of fat loss because a higher glycemic index food means insulin levels will rise much faster. Fat loss cannot occur when insulin levels are extremely elevated. On the other hand a slow releasing carbohydrate will produce less insulin and maximize fat loss.

  • Low GI Foods - In regards to the glycemic index scale, a food under 55 is considered to be low glycemic index.
  • Medium GI Foods - Foods that have a GI under 70 and over 56 are considered to be medium glycemic foods.
  • High GI Foods - Foods that have a GI over 70 are considered to be high glycemic foods.

The glycemic index of foods cannot be taken into account solely on their own as eating protein and fat sources alongside carbohydrates will affect the overall glycemic level of the carbohydrate source.

The International tables of glycemic index and glycemic load values show the following glycemic index for several commonplace foods.





Food


Glycemic Index (Glucose = 100)


Serving Size (Grams)


Glycemic Load Per Serving




Bakery Products and Breads


 


 


 




Banana cake, made with sugar


 47


 60


 14




Banana cake, made without sugar


 55


 60


 12




Sponge cake, plain


 46


 63


 17




Vanilla cake made from packet mix with vanilla frosting (Betty Crocker)


 42


 111


 24




Apple, made with sugar


 44


 60


 13




Apple, made without sugar


 48


 60


 9




Waffles, Aunt Jemima® (Quaker Oats)


 76


 35


 10




Bagel, white, frozen


 72


 70


 25




Baguette, white, plain


 95


 30


 15




Coarse barley bread, 75-80% kernels, average


 34


 30


 7




Hamburger bun


 61


 30


 9




Kaiser roll


 73


 30


 12




Pumpernickel bread


 56


 30


 7




50% cracked wheat kernel bread


 58


 30


 12




White wheat flour bread


 71


 30


 10




Wonder® bread, average


 73


 30


 10




Whole wheat bread, average


 71


 30


 9




100% Whole Grain® bread (Natural Ovens)


 51


 30


 7




Pita bread, white


 68


 30


 10




Corn tortilla


 52


 50


 12




Wheat tortilla


 30


 50


 8




Beverages


 


 


 




Coca Cola®, average


 63


 250ml


 16




Fanta®, orange soft drink


 68


 250ml


 23




Lucozade®, original (sparkling glucose drink)


 95 ±10


 250ml


 40




Apple juice, unsweetened, average


 44


 250ml


 30




Cranberry juice cocktail (Ocean Spray®)


 68


 250ml


 24




Gatorade


 78


 250ml


 12




Orange juice, unsweetened


 50


 250ml


 12




Tomato juice, canned


 38


 250ml


 4




Breakfast Cereals and Related Products


 


 


 




All-Bran®, average


 55


 30


 12




Coco Pops®, average


 77


 30


 20




Cornflakes®, average


 93


 30


 23




Cream of Wheat® (Nabisco)


 66


 250


 17




Cream of Wheat®, Instant (Nabisco)


 74


 250


 22




Grapenuts, average


 75


 30


 16




Muesli, average


 66


 30


 16




Oatmeal, average


 55


 250


 13




Instant oatmeal, average


 83


 250


 30




Puffed wheat, average


 80


 30


 17




Raisin Bran® (Kellogg?s)


 61


 30


 12




Special K® (Kellogg?s)


 69


 30


 14




Grains


 


 


 




Pearled barley, average


 28


 150


 12




Sweet corn on the cob, average


 60


 150


 20




Couscous, average


 65


 150


 9




Quinoa


 53


 150


 13




White rice, average


 89


 150


 43




Quick cooking white basmati


 67


 150


 28




Brown rice, average


 50


 150


 16




Converted, white rice (Uncle Ben?s®)


 38


 150


 14




Whole wheat kernels, average


 30


 50


 11




Bulgur, average


 48


 150


 12




Cookies and Crackers


 


 


 




Graham crackers


 74


 25


 14




Vanilla wafers


 77


 25


 14




Shortbread


 64


 25


 10




Rice cakes, average


 82


 25


 17




Rye crisps, average


 64


 25


 11




Soda crackers


 74


 25


 12




Dairy Products and Alternatives


 


 


 




Ice cream, regular


 57


 50


 6




Ice cream, premium


 38


 50


 3




Milk, full fat


 41


 250ml


 5




Milk, skim


 32


 250ml


 4




Reduced-fat yogurt with fruit, average


 33


 200


 11




Fruits


 


 


 




Apple, average


 39


 120


 6




Banana, ripe


 62


120


 16




Dates, dried


 42


 60


 18




Grapefruit


 25


 120


 3




Grapes, average


 59


 120


 11




Orange, average


 40


 120


 4




Peach, average


 42


 120


 5




Peach, canned in light syrup


 40


 120


 5




Pear, average


 38


 120


 4




Pear, canned in pear juice


 43


 120


 5




Prunes, pitted


 29


 60


 10




Raisins


 64


 60


 28




Watermelon


 72


 120


 4




Beans and Nuts


 


 


 




Baked beans, average


 40


 150


 6




Blackeye peas, average


 33


 150


 10




Black beans


 30


 150


 7




Chickpeas, average


 10


 150


 3




Chickpeas, canned in brine


 38


 150


 9




Navy beans, average


 31


 150


 9




Kidney beans, average


 29


 150


 7




Lentils, average


 29


 150


 5




Soy beans, average


 15


 150


 1




Cashews, salted


 27


 50


 3




Peanuts, average


 7


 50


 0




Pasta and Noodles


 


 


 




Fettucini, average


 32


 180


 15




Macaroni, average


 47


 180


 23




Macaroni and Cheese (Kraft)


 64


 180


 32




Spaghetti, white, boiled, average


 46


 180


 22




Spaghetti, white, boiled 20 min, average


 58


 180


 26




Spaghetti, wholemeal, boiled, average


 42


 180


 17




Snack Foods


 


 


 




Corn chips, plain, salted, average


 42


 50


 11




Fruit Roll-Ups®


 99


 30


 24




M & M?s®, peanut


 33


 30


 6




Microwave popcorn, plain, average


 55


 20


 6




Potato chips, average


 51


 50


 12




Pretzels, oven-baked


 83


 30


 16




Snickers Bar®


 51


 60


 18




Vegetables


 


 


 




Green peas, average


 51


 80


 4




Carrots, average


 35


 80


 2




Parsnips


 52


80


 4




Baked russet potato, average


 111


150


 33




Boiled white potato, average


 82


 150


 21




Instant mashed potato, average


 87


 150


 17




Sweet potato, average


 70


 150


 22




Yam, average


 54


 150


 20




Miscellaneous


 


 


 




Hummus (chickpea salad dip)


 6


 30


 0




Chicken nuggets, frozen, reheated in microwave oven 5 min


 46


 100


 7




Pizza, plain baked dough, served with parmesan cheese and tomato sauce


 80


 100


 22




Pizza, Super Supreme (Pizza Hut)


 36


 100


 9




Honey, average


 61


 25


 12





Complex vs. Simple Carbohydrates


Complex carbohydrates are made up of hundreds of units and provide much more sustained energy as they take more time to be broken down by the body. Some common examples of complex carbohydrates include starchy substances such as oatmeal, brown rice, and sweet potatoes.

Fibrous complex carbohydrates are mostly of the vegetable variety including such common vegetables as asparagus, broccoli, cauliflower, lettuce, peppers, and tomatoes.

Simple carbohydrates are made up of far fewer molecules and provide immediate sources of energy such as fruits and other sugary foods.


When to eat carbs


Prior to beginning your workout it is recommended to have low to medium GI carbohydrates roughly one hour before your workout. If you choose to consume higher GI carbohydrates those may be consumed thirty minutes or less before to provide an immediate source of energy.

Post-workout, focus on faster absorbing carbohydrate sources to provide the appropriate anabolic response for achieving optimal results. Although subject matter experts may differ today in their opinions on the necessity of post-workout protein and carb sources, it is usually better to air on the side of caution because as we all know it's better to be safe than sorry.

Although flexible dieting and use of the "If it Fits Your Macros" (IIFYM) approach has helped to revolutionize dieting making it easier to use for the vast majority of individuals, it is important to consider other extraneous factors beyond simply carbohydrates, fats, and proteins. Eating whole foods will aid the body in providing the appropriate metabolic and anabolic response for achieving results and building muscle effectively.

 
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