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5 Benefits of BCAAs for Strength and Recovery

5 Benefits of BCAAs for Strength and Recovery

Branched-chain amino acids (BCAAs) are now one of the most popular supplements around, earning a place in millions of homes and gyms, worldwide. Numerous studies show a direct link between BCAA intake and improved strength and recovery, fuelling sales growth which shows no sign of slowing.

Whether you are a keen runner, professional tennis player, amateur weightlifter or an Olympic gold medallist, you could certainly benefit from adding more BCAAs to your diet.

Evidence supports the use of BCAA supplementation for strength and recovery during exercise but also recognizes their role in some diseases, such as cancer. Other studies have also linked bloodstream levels of BCAAs to insulin resistance and type-2 diabetes.

In this article, we’ll go over the main benefits of BCAAs for strength and recovery and why you should consider adding them to your diet.

What are BCAAs?

When we talk about protein, we are referring to amino acid residue – which is what protein is made from. BCAAs are essential amino acids because the body is unable to synthesize them on its own, therefore, they must be consumed in our diet. Of the nine essential amino acids, three of them fall into the BCAA category. They are:

  • Leucine – boosts protein synthesis, helping build and repair muscle. It also assists with insulin to regulate blood sugars and is one of only two amino acids which cannot be converted into sugar.
  • Isoleucine – enables energy to be stored in muscle cells rather than fat cells by regulating glucose uptake.
  • Valine – improves mental functioning, reduces fatigue and prevents muscle breakdown.

Other essential amino acids are oxidized (broken down to release energy) in the liver, however, BCAAs are unique in that they can be metabolized in muscle. Why is this important? Well, the body needs BCAAs in the bloodstream to maintain normal bodily functions. If none are available, the body will break down muscle cells to release them. [1] [1]

Food Sources

The supplement industry does a great job convincing us to invest in BCAA supplements to get optimal results. However, for the most part, you will get all you need from everyday foods.

The recommended intake of BCAAs is around 15-20 grams per day, so getting enough from your diet is not all that difficult. You should aim for around five grams per meal (assuming three square meals per day).

Here are some common foods with examples of their BCAA content, per 3oz serving, cooked.

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  • Cheddar Cheese – 4.7g
  • Ground turkey – 4.2g
  • Ground Beef (95% lean) – 4.0g
  • Peanuts – 3.1g
  • Cashew Nuts – 2.8g
  • Whole eggs – 2.2g
  • Chicken breast – 2.1g
  • Lentils – 1.3g
  • Black Beans – 1.3g

Lentils, black beans and kidney beans contain all three branched-chain amino acids; however, some plant-based foods are not “complete” proteins. For a food to be a complete protein source, it must contain all nine essential amino acids. While kidney beans and black beans are complete, lentils lack enough methionine.

You can overcome this problem by combining lentils with other foods high in methionine (such as rice) to form complete proteins. Peanuts suffer a similar problem because they lack the essential amino acid, lysine. To make it complete, simply spread it on bread or toast.

If you’re unsure what foods contain complete proteins, head over to nutritiondata.self.com. This fantastic site lists the protein and nutritional profiles of thousands of foods. If a protein is not complete, simply click the “find foods with complementary profile” link to find sources containing the missing essential amino acids.

The 2:1:1 Ratio

When you look at BCAA supplement packaging, you will nearly always find reference to the BCAA ratio. The most common is 2:1:1, made up of two-parts leucine, one-part isoleucine, and one-part valine. While 2:1:1 is the most common, you will sometimes see products with ratios of 4:1:1, 8:1:1 and even 10:1:1.

These higher ratio BCAA supplements all contain more leucine. If you take time to read the packaging or the manufacturer’s marketing materials, they usually reference the muscle-building power of leucine. In reality, they are just cheaper to produce, so you will rarely find them citing existing research to back up their claims.

Scientists have used the 2:1:1 ratio in studies based on the levels found in natural food sources. Historically, there has been little need to investigate other ratios. Nevertheless, the role of leucine in protein synthesis has caught some interest. While current evidence is limited, a ratio of 4:1:1 has shown promise in one study, where results found it to increase protein synthesis by over 30%.

Benefits of BCAAs

1. You’ll Build Major Muscle Mass

When looking to improve strength, or to build muscle (hypertrophy), you need to activate protein synthesis. For this to happen, leucine is the single most important dietary requirement. Chemical signals tell your body to build and repair muscle, and leucine effectively amplifies that signal – especially following resistance exercise. [2]

As leucine is the main amino associated with muscle growth, you might be wondering why this is not recommended as a standalone supplement for muscle growth. As it happens, studies have been conducted to investigate. One such study compared three groups: one took a placebo, the other a leucine supplement, while the third group consumed a regular BCAA drink with a ratio of 2:1:1. While leucine performed better than the placebo, it did not do as well as BCAA group.

The reason for this is simple: all amino acids are required for muscle growth. So, while leucine stimulates the process, other forms of protein are needed to build muscle. Without the other amino acids, leucine is like a motivational building site manager with no workers to do the job. [3]

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2. You’ll Be Far Less Exhausted

Getting tired during a workout can be a real drag. You will be glad to hear that branched-chain amino acids – particularly valine – can help with this.

When you exercise, the level of tryptophan (another essential amino acid) rises. When tryptophan reaches the brain, it is used to make serotonin – a hormone been linked to our feeling of fatigue. All amino acids are transported to the brain on the same bus, yet not all are allowed entry to the brain. With limited accommodation available, valine competes with tryptophan and overpowers it. Less tryptophan in the brain means less serotonin, and less serotonin means lower fatigue. [4]

3. You’ll Recover Way Quicker

The body can take a real beating during intensive exercise. Recovering after such a session can take a few days or more.

One study, looking into the effects of BCAA supplementation in experienced resistance-trained athletes, showed positive results. The rate of recovery improved for strength, countermovement jump height and muscle soreness.[5] BCAAs can also speed up recovery time following endurance sports and intensive cardio sessions.4. No More Muscle Catabolism

Our priority, when exercising – whether it’s to lose weight, tone up, or get healthier in general – is usually to improve our body composition; after all, better body composition makes you look more toned, and the health benefits are well documented.

While exercising, we need more BCAAs to function properly. [11] [6]

When bloodstream levels are too low, the body looks for somewhere to get them. At this stage, it begins breaking down (catabolizing) muscle tissue to access the branched-chain amino acids it needs.

Consuming BCAAs ensures an adequate level is available in the bloodstream, reducing the chances of muscle breakdown. During and following intensive exercise sessions, it is important to consume slightly higher levels. This is the reason why some athletes will sip on a BCAA supplement drink during a workout.

Intermittent fasting has risen in popularity in recent years, with millions of people finding success with this form of dieting. As you can imagine, while in the fasted state, the bloodstream is low on BCAAs. Knocking back a very low-calorie BCAA drink during the fasted helps combat this.

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Following a workout, a meal or meal replacement high in protein is typically consumed to further replenish BCAA levels. If the aim of the workout was to build muscle, this is the best time to give protein synthesis a boost with some muscle-building leucine. Fast acting carbs are also a good idea at this time, as the energy can be stored in the muscles as glycogen.

5. Massive Muscle Energy Storage

When you eat, the energy you consume is either used or stored. You could be forgiven for thinking that excess energy is stored in fat cells, but it’s not.

Once digested, carbohydrates are converted to glucose, which supplies your cells with energy. The hormone, insulin, helps regulate blood sugar. One of the ways it does this is by helping glucose move through cell walls to be stored.

Unused glucose is converted to glycogen and stored in the liver and muscle tissue. Any excess glucose which cannot be deposited as glycogen is finally stored in fat cells.

The fantastic thing about glycogen stored in muscle cells is this: once stored in the muscle, it cannot return to the bloodstream to be used anywhere else. It can be used only by the muscle. For this reason, encouraging glucose to be stored in muscle cells is preferable to it being stored as fat.

Glycogen stored in muscles is a readily available energy source. So, when blood sugars are too low, contracting muscles will use the fuel stored within them to get the job done. This is where the branched-chain amino acid, isoleucine, shines by promoting glucose uptake by muscles. Greater uptake means less energy is stored as fat resulting in quicker energy access for the muscle. [7]

Dangers, Side Effects & Toxicity

Is There a Risk of Toxicity

It is safe to say that consuming high levels of BCAAs is not toxic. Studies looked at toxicity in mice and rats, concluding there to be no observed-adverse-effect level. [8]

However, if you’re looking to maximize your training efforts, research shows that excessive levels of BCAAs can actually hinder performance.[14] [9]

Inclusive Ties to Type-2 Diabetes

Maybe the largest concern for some people is that there is a direct link between high levels of BCAAs in the blood and type-2 diabetes. [15] On initial inspection, this looks to be bad news for branched-chain amino acids. However, further research suggests it is poor insulin sensitivity which drives higher circulating BCAA levels.[10] [11]

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Negative Effects on Insulin Sensitivity in Vegans

During a 2017 study, when supplementing with BCAAs, vegans became more resistant to insulin. [12]

During this study, they consumed an extra 20 grams of branched-chain amino acids per day for three months. Considering the lack of research on the subject, it is difficult to ascertain why this happened. Evidence shows that switching to a plant-based diet lowers the BCAA plasma levels associated with insulin resistance. [13]

The vegan subjects also had much better insulin sensitivity at the start of the study.

Increased Spread of Cancer & Disease

Inside our cells, a series of chemical reactions are constantly taking place. This series of events, known as a biological pathway, is what we refer to as our metabolism. These interactions produce new molecules such as fat or protein and can trigger changes in our cells.

The mTOR pathway forms part of this process. In simple terms, the mTOR pathway regulates cell growth. The branched-chain amino acid, leucine, stimulates the mTOR pathway, which is great for muscle growth, but not so great for some forms of cancer. Many cancers rely on mTOR activity for the growth and spread of cancerous cells. For this reason, much research is taking place regarding BCAAs and their link with diseases. [14]

Take Home Advice: Take BCAAs

It’s easy to see, given the evidence, why BCAAs are such a popular supplement for people engaging in exercise. Faster recovery, increased muscle growth, and reduced fatigue benefit all kinds of athletes, from beginners through to seasoned Olympians.

For those lifting weights, BCAAs will help you get bigger and stronger; marathon runners might delay hitting the wall, and if you’re playing competitive football week in week out, you can recover faster. In contrast, if you are not exercising regularly, there really is no need: just ensure you’re eating enough complete, plant-based proteins such as lentils, black beans, nuts and grains, some fish and meat a few times per week and you’ll be fine.

However, if you are vegan, your family has a history of diabetes, or have been recently diagnosed with a disease such as cancer, you should certainly consult with your doctor before adding BCAA supplements to your diet.

Featured photo credit: Brad Neathery via unsplash.com

Reference

More by this author

Robin Young

Fitness writer, and CEO at Fitness Savvy

5 Benefits of BCAAs for Strength and Recovery

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Last Updated on April 2, 2020

10 Quick Easy Workouts To Lose Arm Fat At Home

10 Quick Easy Workouts To Lose Arm Fat At Home

Flabby arms are something a lot of us have to tend to. If you find yourself buying a sweater or cardigan to go with your tank top or usually opt for the long-sleeved dress, then you’re not alone. Usually a result of genes, general excess fat or just ageing, it seems difficult to lose arm fat. The fat in our arms accumulates mainly around the triceps – the muscles on the back of your upper arm – and are prone to getting flabby if not exercised regularly.

What we eat can also play a part in the extent of the jiggle so eating a good, healthy balanced diet as well as keeping well hydrated can put you on the right track. Resistance exercises are the most effective way to blast that underarm fat as well as strengthen, shape and tone your muscles. You can always go down to the gym and work up a sweat but who has time for that? If you want a convenient and quick alternative then you can easily manage an effective routine in the comfort of your own home. All you need is a set of dumbbells and you can start toning up those bingo wings with these 10 easy workouts.

1. Tricep dips

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    Works: Triceps

    • Hands must be positioned shoulder width apart on a secured chair or bench.
    • Position your bum in front of the bench with feet hip-width apart on the floor and legs bent.
    • Straighten out your arms a little, keeping a slight bend from the elbow so to put more emphasis on the tricep and less stress on the elbow.
    • Keeping your back close to the bench, slowly lower your body so that your arms are at a 90-degree angle.
    • Once in this position slowly push off your hands back to the starting position.
    • Do 10-15 reps.

    2. Bicep curls

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    shutterstock_314080697

      Works: Biceps and shoulders

      • Start off with your feet hip-distance apart, holding one dumbbell in each hand with your palms facing out.
      • Starting with your left arm, bend your elbow to slowly bring the weight up to your shoulder holding the position for 5 seconds.
      • Slowly release the elbow and straighten your arm back down to the starting position.
      • Repeat the moves on the right side.
      • Complete 3 sets of 10-15 reps for each arm.

      3. Push ups

      shutterstock_326069966

        Works: Triceps and Deltoids

        • Lying face down, place your hands on the floor roughly shoulder-width apart.
        • Tuck your toes under and gently lift your body up, pushing through your hands and making sure not to lock your elbows.
        • Slowly bend your elbows bringing your face roughly 2-3 inches from the ground.
        • Slowly push back up through your arms. If this is difficult then do the same move but keeping your knees on the floor.
        • Repeat 10-15 times.

        4. Tricep Kickbacks

        shutterstock_314080715

          Works: Triceps

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          • Place a weight in each hand and kneel down onto the floor with your toes tucked under.
          • Bend your upper body forward from the hips up and bend your elbows to a 90-degree angle.
          • Extend both your arms backwards while your palms are facing each other.
          • Feel the tension in the triceps and return to the starting position.
          • Do 3 sets of 8-10 reps.

          5. Plank

          shutterstock_298755041

            Works: Chest, Shoulders, Biceps and Core

            • Start face-down on the floor, resting on your forearms and knees.
            • Step your feet out so that they are slightly apart and come into the plank position.
            • Make sure your body is straight, parallel to the floor and your bum is tucked in.
            • Pull your abs in and hold the position for as long as you can. Try to aim for 20-30 seconds and build up to a minute.
            • Repeat 3 times.

            6. Tricep Extensions

            shutterstock_314080343

              Works: Triceps

              • Stand on a mat with your feet hip-width apart.
              • Hold one dumbbell with both hands behind your head, bending the elbows.
              • Bring the weight towards the ceiling, straightening your arms above your head.
              • Lower back to starting position.
              • Complete 2-3 sets of 10-15 reps.

              7. Lateral Arm Raises

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              ab891e2e702b8027b704791ef556d0ce

                Works: Deltoids

                • Stand with feel hip-width apart. With arms down the side of your body, hold a dumbbell in each hand with palms facing in.
                • Starting with your left side, inhale and slowly raise your arm so that it’s parallel to the floor. Make sure not to lock your elbow by keeping a slight bend.
                • Make sure your arm is straight and palm is facing the floor.
                • Exhale and slowly bring your arm back down to your side.
                • Repeat on the right side.
                • Do 10-15 reps on each side and two sets.

                8. Overhead Press

                shutterstock_314080298

                  Works: Shoulders

                  • Stand up, lining your feet with your hips and hold a dumbbell in each hand with palms facing out.
                  • Bring the weights to your shoulders.
                  • Keep your core muscles tight and straighten your arms above you.
                  • Slowly bring your arms back down to your shoulders.
                  • Do 3 sets of 10-15 reps.

                  9. Bent Over Row

                  shutterstock_275943536

                    Works: Triceps and Biceps 

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                    • Place your feet shoulder-width apart.
                    • Bend your knees and and then bend your upper body forward from the hips making sure you keep your back nice and straight.
                    • Make sure your hands are straight and placed under your shoulders.
                    • Bend the elbows back while lifting your arms towards the sides of your chest, pulling your shoulder blades towards each other.
                    • Slowly lower the weights in a controlled movement and feel the tension at your triceps.
                    • Repeat 10-15 times.

                    10. Skull Crushers

                    Skull-Crushers

                      Works: Triceps

                      • While holding a dumbbell in each hand, lie on your back with your knees bent.
                      • Slowly raise your arms so they are above your chest, making sure your elbows are straight but not locked.
                      • Slowly lower both arms toward your head, bending your elbows to 90 degrees as the dumbbells reach the mat. Aim to lower your weights so they are on either side of your head  with elbows bent and pressing in toward your head (being careful not to hit yourself in the face).
                      • Lift your arms back to starting position.
                      • Complete 2 or 3 sets, 10-15 reps each.

                      Featured photo credit: Maddi Bazzocco via unsplash.com

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