The Importance of Food and Training. Part 5
Why are carbohydrates important?
Carbohydrates are the body's primary source of fuel. The energy can be released quickly and easily to fulfil immediate requirement within cells. Carbohydrates do not require oxygen to burn therefore they fuel most muscular contractions, meaning our carbohydrate intake is very important for regular exercise sessions. If carbohydrate stores are low, exercise will seem like a real effort!
Good Carbs
Complex carbohydrates are simply sugars bonded together to form a chain. Digestive enzymes have to work much harder to access the bonds to break the chain into individual sugars for absorption through the intestines.
For this reason digestion of complex carbohydrates takes longer. The slow absorption of sugars provides us with a steady supply of energy and limits the amount of sugar converted into fat and stored! They also keep you feeling full for a lot longer.
Bad Carbs
Their rapid absorption increases the chances of sugar converting to fat. Foods like cake, pastry, biscuits, chocolate and table sugar in excess contain lots of "empty" calories. Because our cells usually do not require that amount of energy at that time, the sugar must either be converted to glycogen (sugar storage within cells) or converted to fat. The cell can only store a limited amount of glycogen so in many cases simple carbohydrate loaded foods may contribute to body fat stores.
They are digested quickly because the individual sugars are ready to be absorbed immediately plus digestive enzymes have easy access to the bonds in the paired molecules. You could say most of the work has been done!
The Importance of Protein
People that are looking to get the most from their overall fitness level with strength training should know and understand the importance of protein when lifting weights. If you engage in sports, stronger weight training, or even weight training that is minimal, it is absolutely imperative that you get enough protein.
How much protein do athletes need? The current dietary reference intake (DRI) for protein for persons over 18 years of age, irrespective of physical activity status, is 0.8 g per kilogram of body weight per day. Many sports nutrition experts have concluded that protein requirements are higher for athletes (American College of Sports Medicine, American Dietetic Association, and Dieticians of Canada (2000). Joint Position Statement: Nutrition and athletic performance. Med. Sci. Sports Exerc. 32:2130-2145).
The additional protein works in the following ways;
Aids in the repair of exercise-induced damage to muscle fibres.
Promoting training-induced adaptations in muscle fibres (e.g., synthesis of new proteins that are involved in energy production and/or force generation).
Helps to replace used energy stores.
The American College of Sports Medicine (ACSM), American Dietetic Association (ADA) and Dieticians of Canada (DC) make the following protein recommendations for endurance athletes. 1.2 to 1.4 g per kilogram of body weight per day. They recommend as much as 1.6 to 1.7 g per kilogram of body weight per day for bodybuilders and other high intensity strength training.
I still think that for safety around 1.5 g of protein is more than enough to get great gains for most bodybuilders. Majority of this will come from your normal daily food intake. Protein drinks are just a convenient way to get the required amount of protein in your system for great training. They are super as a meal replacement for really busy people and those that have a problem getting in the 6 meals a day. They are also a great way for thin people to gain good weight if they have a weight gainer. A weight gainer is just a good protein shake with extra carbs in it.
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