by Alan E. Shugarman, M.S., R.D.
Working out revs up the metabolic machinery of the body, but it's good nutrition and proper timing that ultimately fuels it to change. Without the right kind of fuel your body won't recover, rebuild, and re-sculpt itself into the shape you desire. The latest research clearly shows that what you eat and when you eat, makes a tremendous difference in the speed and quality of the results you get from your workouts. Use this information to shorten the time it takes you to achieve your physique goals and bust through plateaus.
1-2 Hour Pre-Workout Meal
Research shows that one to two hours before your workout, you should eat a light meal, drink a meal replacement powder (MRP), or eat a large protein bar.
Immediately Pre-Workout Drink
The latest research data indicates that a pre-workout meal supplement containing at least 10g of protein or about 6g of essential amino acids will minimize muscle protein breakdown during intense physical exercise. Whey protein is the preferred choice since it digests fast. Or you can take straight amino acids in pill or liquid form since you don't need large quantities. Along with protein, consume at least 30-40g of high glycemic (sugary-type) carbohydrates such as glucose, maltodextrin, or glucose polymers. This helps spare glycogen for improved performance and results. This 3 or 4 to 1 ratio of carb:protein is found in most weight gainer formulas. You can also use a high-carb or endurance powder and add a little protein.
When you exercise, whether it is jogging or lifting weights, your body produces a stress hormone called cortisol. Cortisol is actually your muscle's enemy since it tears muscle down and converts it to fuel. The opposite is true for insulin which helps rebuild muscle and suppresses the release of cortisol. Drinking a carb-filled drink therefore stimulates insulin and blunts cortisol. The result? More muscle gains! Not suprisingly, in one study cortisol levels dropped by almost 80% when athletes were give a 6% carbohydrate solution during exercise when compared to those receiving water. Another study showed that a high-glycemic, carb/protein drink was 38% more effective than a conventional protein drink in stimulating protein synthesis. Misunderstanding how these hormones work is why so many people hit plateaus in the gym despite their heavy workouts.
This is also a good time to take a fat burner or another energy supplement to get you energized for your workout.
Mid-Workout Drink
If your workout is less than one hour, just drink water. However, if training extends past an hour, you need the same high-glycemic, carb/protein drink to help maintain glycogen (stored energy) levels for a longer workout. Researchers from the University of Texas in Austin found this formula taken during a workout with electrolytes, improved endurance 57% compared to water and 24% compared to a carb/electrolyte drink. (See figure 1)
0-45 Minutes Post-Workout Drink
This is a critical time for proper recovery. You need to rush nutrients into your body preferably within 30 minutes of your workout. (See Figure 2). A delay of an hour or two can make a significant difference in your recovery, muscle protein synthesis and glycogen replenishment.
By taking a carb/protein drink immediately after your workout, you will double your amino acid uptake and increase subsequent protein synthesis by a whopping 25% when compared to waiting a few hours! Plus you'll perform better during your next training session because your muscle glycogen will be replenished more completely.
Another recent study revealed that those who supplemented immediately post workout actually lost more body fat than those who delayed eating after their workout. (See Figure 3)
The post-workout formula should contain 15g of whey protein (which is fast-digesting) and about 45g of high-glycemic carbohydrates. This is about a 3 to 1 ratio of carb:protein in a liquid form for fast absorption. I would also add 2-4g of glutamine to the drink. Don't mix this formula in milk or take a milk based (casein protein) since it will slow down digestion. Now is also a great time to take creatine if you're trying to build muscle. A dose of 3-5g of creatine should do the trick. If you take a creatine transport formula that has high-glycemic carbs, just mix in some whey protein and you have a perfect post-workout formula.
I pack a shaker bottle in my gym bag containing the dry powder formula I've mentioned. As soon as I'm done working out, I add water at the drinking fountain, shake it up and drink it on the way home.
2-3 Hours Post-Workout Meal
After about two hours your body is primed to stimulate further muscle protein synthesis and recovery. This is the time to eat a regular meal.
It should focus equally on protein and carbs. Eat about 20-40g each of protein and low-glycemic carbs. Lean meats and steamed vegetables are a good choice. Stay away from refined carbs like breads, pastas, rice and cereal to minimize insulin stimulation. Once the metabolic window to build muscle has passed, excess carbs and insulin will only make you fat.
A meal replacement powder containing whey and casein (milk protein) would also be appropriate for this meal. Casein has a slower absorption profile than whey and therefore delivers a more sustained amino acid stream to the blood. This is also a good time to take an essential fat supplement like flax oil and/or fish oil, as well as your multi-vitamin supplement if you have not already taken them earlier in the day. You may want to take another 3-5g of glutamine to help maximize your recovery.
Meal Timing on Non-Training Days
On non-training days, eat 5-8 small meals a day that are high in quality protein.
Eating every 2-3 hours will keep your metabolism up and your hunger down while fueling your muscles with adequate protein and nutrients.
Eat starchier carbs earlier in the day and stick with salads and vegetables in the afternoon and evening.
Use meal replacement powders for 2 to 3 of the meals if necessary. Drink a pre-bedtime snack of casein and whey.
Take your creatine and glutamine as well as your multi-vitamins and essential fat supplements. And drink plenty of water, about a gallon a day.
A Better Body In Less Time
As you can see, it's not just about what you eat but when you eat it. Correctly timing your meals along with the proper ratios of carbs to protein can make a world of difference in your results. In the end you'll have more energy and a better body in less time than you ever thought possible!
Selected Sources
- Ivy J, Portman R. The Future of Sports Nutrition Nutrient Timing. Basic Health Publications. 2004
- Bishop NC, Gleeson M, Nicholas CW and Ali A. Influence of carbohydrate supplementation on plasma cytokine and neutrophil degranulation responses to high intensity intermittent exercise. Int J Sport Nutr Exerc Metab 12: 145-156, 2002.
- Fournier PA, Brau L, Ferreira LD, Fairchild T, Raja G, James A and Palmer TN. Glycogen resynthesis in the absence of food ingestion during recovery from moderate or high intensity physical activity: novel insights from rat and human studies. Comp Biochem Physiol A Mol Integr Physiol 133: 755-763, 2002.
- Ivy JL. Glycogen resynthesis after exercise: effect of carbohydrate intake. Int J Sports Med 19 Suppl 2: S142-S145, 1998.
- Ivy JL, Res PT, Sprague RC and Widzer MO. Effect of a carbohydrate-protein supplement on endurance performance during exercise of varying intensity. Int J Sport Nutr Exerc Metab 13: 382-395, 2003.
- Jentjens RL, van Loon LJ, Mann CH, Wagenmakers AJ and Jeukendrup AE. Addition of protein and amino acids to carbohydrates does not enhance postexercise muscle glycogen synthesis. J Appl Physiol 91: 839-846, 2001.
- Kiens B and Richter EA. Utilization of skeletal muscle triacylglycerol during postexercise recovery in humans. Am J Physiol 275: E332-E337, 1998.
- Kimber NE, Heigenhauser GJ, Spriet LL and Dyck DJ. Skeletal muscle fat and carbohydrate metabolism during recovery from glycogen-depleting exercise in humans. J Physiol 548: 919-927, 2003.
- MacDougall JD, Gibala MJ, Tarnopolsky MA, Macdonald JR, Interisano SA and Yarasheski KE. The time course for elevated muscle protein synthesis following heavy resistance exercise. Can J Appl Physiol 20: 480-486, 1995.
- Maughan RJ. Fluid and electrolyte loss and replacement in exercise. J Sports Sci 9 Spec No: 117-142, 1991.
- Nicholas CW, Tsintzas K, Boobis L and Williams C. Carbohydrate-electrolyte ingestion during intermittent high-intensity running. Med Sci Sports Exerc 31: 1280-1286, 1999.
- Nieman DC. Exercise immunology: nutritional countermeasures. Can J Appl Physiol 26 Suppl: S45-S55, 2001.
- Noakes TD. Fluid replacement during exercise. Exerc Sport Sci Rev 21: 297330,1993.
- Pascoe DD, Costill DL, Fink WJ, Robergs RA and Zachwieja JJ. Glycogen resynthesis in skeletal muscle following resistive exercise. Med Sci Sports Exerc 25: 349-354, 1993.
- Phillips SM, Tipton KD, Aarsland A, Wolf SE and Wolfe RR. Mixed muscle protein synthesis and breakdown after resistance exercise in humans. Am J Physiol 273: E99-107, 1997.
- Price TB, Rothman DL, Taylor R, Avison MJ, Shulman GI and Shulman RG. Human muscle glycogen resynthesis after exercise: insulin-dependent and -independent phases. J Appl Physiol 76: 104-111, 1994.
- Tipton KD, Borsheim E, Wolf SE, Sanford AP and Wolfe RR. Acute response of net muscle protein balance reflects 24-h balance after exercise and amino acid ingestion. Am J Physiol Endocrinol Metab 284: E76-E89, 2003.
- Tipton KD, Rasmussen BB, Miller SL, Wolf SE, Owens-Stovall SK, Petrini BE and Wolfe RR. Timing of amino acid-carbohydrate ingestion alters anabolic response of muscle to resistance exercise. Am J Physiol Endocrinol Metab 281: E197-E206, 2001.
- Van Loon LJ, Kruijshoop M, Verhagen H, Saris WH and Wagenmakers AJ. Ingestion of protein hydrolysate and amino acid-carbohydrate mixtures increases postexercise plasma insulin responses in men. J Nutr 130: 2508-2513, 2000.
- Van Loon LJ, Saris WH, Kruijshoop M and Wagenmakers AJ. Maximizing postexercise muscle glycogen synthesis: carbohydrate supplementation and the application of amino acid or protein hydrolysate mixtures. Am J Clin Nutr 72: 106-111, 2000.
- Van Loon LJ, Saris WH, Verhagen H and Wagenmakers AJ. Plasma insulin responses after ingestion of different amino acid or protein mixtures with carbohydrate. Am J Clin Nutr 72: 96-105, 2000.
- Zachwieja JJ, Costill DL, Pascoe DD, Robergs RA and Fink WJ. Influence of muscle glycogen depletion on the rate of resynthesis. Med Sci Sports Exerc 23: 44-48, 1991.