Thursday, 12 December 2013

The Truth about Post-Workout Shakes


You probably heard one of the basic tenants of getting bigger and stronger: Eat protein within an hour after exercise to fuel muscle growth. It’s called protein timing, and the idea behind it is this: Resistance training increases amino acid delivery to muscles as well as absorption. Therefore, the sooner you consume protein post-exercise, the bigger the stimulation in muscle protein synthesis. In theory, proper protein timing leads to bigger long-term gains in strength and lean body mass. 

Here are three truths you need to know about protein timing:

1. The “magic window” is longer than you think
Some experts say that you should consume protein 20 minutes post-exercise, while others claim it’s an hour. The reality: You’ve got longer. Studies show muscles’ elevated sensitivity to protein lasts at least 24 hours, says Aragon. In fact, one 2012 review study by McMaster University showed that muscle protein synthesis may continue for 24 to 48 hours post-workout. “The effect is higher immediately after exercise and diminishes over time, but that certainly doesn’t imply a magical window closes after an hour,” says Aragon. That means, theoretically you would want to eat protein right away—but because there’s not a huge post-exercise drop off in muscle protein synthesis, you don’t have to rush to pound a protein shake. Why? See our next point. 

2. Total protein intake matters more
For the average active guy looking to be healthy and lose weight, protein timing won’t make a difference if you don’t meet other nutritional needs first, says the leading researcher and a big advocate of post-exercise feeding, Stuart Phillips, Ph.D., of McMaster University in Ontario. Not that timing isn't helpful, just that it’s not the most important factor in building muscle and weight loss. What is? Along with consistent workouts, you need to consume an ample amount of protein during the day. 

Spacing out protein intake may maximize its effects: One of Phillips’ 2012 studies published in Nutrition & Metabolism found that consuming 20 grams of protein (roughly the amount in a container of Greek yogurt) every three hours four times a day was better at helping men build lean body mass than eating protein more often (10 grams of protein eight times a day) or less frequently (40 grams of protein twice a day). Moderate amounts may more effectively stimulate muscle protein synthesis, researchers note. “In addition to the muscle benefits, protein is remarkably satiating, so this will also help with weight loss,” says Phillips. The good news: Most of us eat three or four times a day anyway—just make sure your meals are well-rounded and include protein. Sick of chicken?

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The Shocking Truth About Protein Bars, Shakes & ‘Enhanced’ Foods


Rread more here http://www.menshealth.com/nutrition/post-workout-shakes

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