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Whey protein powder is the most important muscle-building supplement you can take, with essential benefits for everyone from casual gym-goers to elite sportsmen. But with so many choices, each with a variety of other substances and bewildering acronyms propping up their ingredients list, it can be difficult to know what you’re actually putting into your body – or if it’s even helping your training. Here's what you should look out for next time you reach for the scoop.
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A study published in the Journal Of The International Society Of Sports Nutrition found that subjects who consumed whey protein after training experienced improved blood flow to their forearm muscles, enhancing the delivery of muscle-building nutrients such as oxygen and hormones. It is also generally understood that the anabolic effects of weight training are increased through the consumption of whey protein because amino acids are rapidly driven to skeletal muscle tissue. This helps your muscles get larger and stronger in less time than if you weren’t taking whey protein.
There is no general agreement to how much protein you should be taking after a workout. Poliquin says that 0.55g of protein per kg of bodyweight is enough for building muscle. So for a 75kg man looking to accelerate his strength gains, around 40g of protein per post-workout serving should hit the spot.
Take whey straight as soon after a workout as possible for a quick hit of muscle-building nutrients. Casein is the bedtime protein, and you should take it before you hit the hay for a prolonged release of protein to aid muscle recovery and growth. Soy protein is a vegan option derived from soya beans, and studies have shown that it, like the previous two, supports muscle hypertrophy.
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Both isolate whey and concentrate go through a microfiltration process – basically a really fine sieve – but isolate goes through it more times. This produces a powder containing more than 90% pure protein, compared with around 75-85% for concentrate.
With so many companies making whey protein powders, it can be tricky knowing which to go for, specially considering the difference in prices between certain brands. While more expensive brands usually use isolate whey, rather than concentrate, that's not always the case so it’s worth reading the product description to find out. As a rule of thumb, check how long the brand has been around for. If they've been trading for ages, it’s a safe bet it’s a decent product. Having said that, most companies use the same – or very similar – protein in their products, it’s the flavour (and carbohydrate content) that drastically changes between different products.
You might find these in your protein powder, and for good reason. If you're training with heavy weights, branched-chain amino acids help prevent the breakdown of muscle tissue and post-workout DOMS (delayed onset muscle soreness) so you recover quicker and can train again sooner. Sometimes called the building blocks of the body, BCAAs comprise 35% of your muscle tissue and are needed in order for them to repair and grow. Eight of them are essential, which means your body can't make them, while the rest can be produced by your body. Besides repairing tissue and helping to build new cells to aid growth, BCAAs form antibodies and even help carry oxygen in your bloodstream. Their primary function is to carry nitrogen, which is needed to be able to combine simpler amino acids into new muscle tissue. In short, they are vital for proper recovery and msucle growth post-exercise.
You could find this in your protein, most likely if you have a bulking powder. What it does is increase energy, which allows you to train for harder and longer. This means protein synthesis (muscle fibre repair) will occur more, building bigger muscles.
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World-renowned strength coach Charles Poliquin says that if you’re going for mass gains, you must take a carb-rich protein shake after your workout. For lean gains, avoid excessive carb intake and simple carbs even more so. Low carbs in your diet means a drop in the body’s insulin, making it easier for your body to burn fat.
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Of course, you can always blend other ingredients into your post-workout protein shake to add variety and pack in other nutritional benefits. Try this protein smoothie, designed by nutritionist Scott Baptie. It hits three of your five a day, tastes delicious and has even more good stuff to ensure you get the most from your hard work in the gym.