Nutrient timing is a planned alteration of macronutrient intake in order to promote health, workout performance, and get and or lean.Nutrient timing strategies are based on how the body handles different types of food at different times. One of the most important nutrient timing principles is that it’s best to eat most non-fruit and veggie carbohydrates during and after exercise so this means COMPLEX CARBS !
Nutrient timing has several important goals:
- Nutrient partitioning (where the nutrients go when you ingest them)
- Improved health
- Improved body composition
- Improved athletic performance
- Enhanced workout recovery
When you exercise regularly, the body is primed for fat gain or fat loss just as it’s primed for muscle gain or muscle loss during specific times of the day. The wrong foods at the wrong times sabotage your efforts in the gym. The right foods at the right times enhance those efforts.
Once we account for energy balance, timing nutrient intake can up-regulate metabolism, shift hormonal profile, and alter body composition.
Manipulating nutrient intake can also help someone take advantage of certain anabolic hormones, namely insulin. The body handles various types of carbohydrates differently. In general, carbohydrates that are digested and absorbed slowly can help to control insulin response. These are carbohydrates that are higher in fibre and lower in simple sugars, such as beans/legumes and vegetables. However,a diet consisting of added sugars and refined carbohydrates known as complex carbs, can elevate blood triglyceride levels and bad cholesterol, and lead to insulin resistance.
Although most of the energy for weight training is provided by the breakdown of stored muscle glycogen, blood glucose does provide a small component. In order to maximize training intensities and volumes during a session, normal levels of blood glucose should be present, and can be consumed via pre-workout carbohydrate, which should provide adequate blood glucose unless the sessions are high in volume.
Regardless of goals and activity, protein and fat intake stay fairly constant. Make sure that you consume an appropriately sized portion of lean protein and good fats with every meal. The macronutrient we manipulate most commonly in nutrient timing is carbohydrate. The body can better handle carbohydrates during and after physical activity, as well as when levels of fitness are high and body fat levels are lower (15% or less for men and 20% or less for women).
The chart below explains some of the carbohydrate types and when the optimal times of consumption are.
Examples | When to eat | |
FIBER RICH
Vegetables (e.g., broccoli, kale, spinach, carrots, tomatoes, celery, cucumber, zucchini, beets, bok choy, lettuce, collards, pumpkin, radish, onion, chard, watercress, etc.) Peas |
Eat often, and any time of day (especially for veggies) | |
STARCHY Sprouted grain breads Corn Sprouted grain pasta Yams/sweet potatoes Quinoa Amaranth Oats Long grain rices |
During the 3 hours or so after exercise | |
REFINED AND PROCESSED: Stay mostly away from
Desserts |
Eat rarely, and during the 3 hours after exercise. |
In conclusion, once you build a foundation of nutritious eating, then consider adding the nutrient timing habit by using this advice:
If you are lean and simply want to maintain your existing body composition, consuming more carbohydrates throughout the day will likely be fine.
If you want to lose body fat, first control overall food intake, then aim to consume a majority of carb dense foods during and after exercise sessions (for about 3 hours after). Outside of the 3 hour window consume primarily protein and fat, while consuming fewer carb dense foods (25% of less of meal made up of carb dense foods).
If you want to gain muscle, the nutrient timing principles are similar — simply add more calories overall.
In all cases: Assess your progress and adjust as necessary.
References
http://www.expert-nutrition.com/nutrient-timing.html
http://www.ideafit.com/fitness-library/nutrient-timing
http://www.precisionnutrition.com/all-about-nutrient-timing