Barbells vs Dumbbells: Which Should You Choose for Your Workouts?

Welcome to the great free-weight debate: which classic training tool is better, the barbell or dumbbells?

Which one is more functional? Which one should you use in your workouts? And when should you choose one over the other?

The truth is, there’s no quick answer here. Both barbells and dumbbells are fantastic tools that can bring huge benefits to your training, and ideally, you should use both. (Along with the other great pieces of equipment you already use at the gym.)

The Different Types of Dumbbells:

There are two basic types of dumbbells: fixed-weight dumbbells and adjustable dumbbells.

Fixed-weight dumbbells are the ones you usually see in traditional gyms, typically ranging, in pairs, from around 2 kg to more than 30 kg.

Adjustable dumbbells allow you to change the load quickly by sliding weight plates on and off the handle, tightening them into place, pulling a pin, or turning a dial that locks and releases the plates. They also usually range from around 2 kg to more than 30 kg.

Adjustable dumbbells tend to be slightly less secure than fixed-weight ones. You’d better make sure the weight is properly locked in place, otherwise a plate could fall off during use and leave you dazed, stumbling around with a bump big enough to make Tom & Jerry jealous.

They can also be a little awkward to use. Heavier loads often mean more plates, which creates longer dumbbells that can be harder to move around your body during certain exercises.

That said, they’re cost-effective, space-saving, and a solid choice for a home gym.

(A full set of fixed-weight dumbbells can get expensive and takes up a lot of space.)

The Different Types of Barbells:

There are two basic types of dumbbells: fixed-weight dumbbells and adjustable dumbbells.

Fixed-weight dumbbells are the ones you usually see in traditional gyms, typically ranging, in pairs, from around 2 kg to more than 30 kg.

Adjustable dumbbells allow you to change the load quickly by sliding weight plates on and off the handle, tightening them into place, pulling a pin, or turning a dial that locks and releases the plates. They also usually range from around 2 kg to more than 30 kg.

Adjustable dumbbells tend to be slightly less secure than fixed-weight ones. You’d better make sure the weight is properly locked in place, otherwise a plate could fall off during use and leave you dazed, stumbling around with a bump big enough to make Tom & Jerry jealous.

They can also be a little awkward to use. Heavier loads often mean more plates, which creates longer dumbbells that can be harder to move around your body during certain exercises.

That said, they’re cost-effective, space-saving, and a solid choice for a home gym.

(A full set of fixed-weight dumbbells can get expensive and takes up a lot of space.)

The Different Types of Barbells:

Most of the time, when you use a barbell, you hold it with both hands.

As we’ll see below, this allows you to lift and stabilise heavier loads, making it easier to place a greater overload on your muscles.

Barbell training is also more directly applicable to strength sports such as Olympic weightlifting, powerlifting, and CrossFit, where the barbell itself is used in competition.

By contrast, when you use dumbbells, each hand moves independently.

You can lift one or two dumbbells at a time, but because your hands aren’t fixed to a single bar, the range of motion in many exercises can be greater, and the stabilisation demands can also increase.

When you perform single-arm dumbbell exercises, such as rows, biceps curls, and so on, you’re doing unilateral work.

Unilateral training is great for targeting a weaker side and maintaining a good range of motion within a muscle group.

It also challenges your body in a way that often resembles how you move in everyday life.

Very often, we use one side of the body while stabilising the other, whether we’re running, throwing, punching, and so on, which makes dumbbell exercises very functional.

That said, don’t go spending hours training one side only like a hamster stuck on its wheel.

My advice is to always start with your weaker side, then match the same number of repetitions on your stronger side.

That can help prevent the imbalance from getting worse and reduce the risk of ending up with an even bigger difference between both sides.

And if the imbalance is significant or painful, get help from a physiotherapist.

The Benefits of Using a Barbell:

Having your hands locked into a fixed position on a barbell while lying on a bench offers one major advantage that is difficult to reproduce with other setups: the ability to lift very heavy loads.

More specifically, it allows you to work on maximal strength.

Barbell exercises where both legs or both arms work together, such as the back squat, bench press, or deadlift, allow you to move the heaviest possible loads. That’s why world records are generally recorded using barbell exercises.

That doesn’t mean you can’t train maximal strength with dumbbells, but it becomes more difficult because dumbbells require more stabilisation. At certain strength levels, that extra stabilisation demand can make it extremely difficult, or even impossible, to reach the same loads.

“A more stable load means you can add more weight, because the load is better stabilised by your larger muscles,” says John Rusin, PT, DPT, CSCS, owner of the online fitness platform John Rusin Fitness Systems.

In other words, when you use a barbell, you rely less on smaller and weaker stabilising muscles than you do with dumbbells.

With barbell exercises, the strongest and most powerful muscles can take on most of the load because both hands are working together to stabilise the movement.

So it’s pretty clear that the barbell is an essential tool for anyone who really wants to maximise maximal strength, including competitive weightlifters, athletes in sports where power is very important such as football, basketball, and athletics, as well as experienced fitness enthusiasts.

Beyond a certain level, because the barbell allows you to handle heavier loads than dumbbells, it can also become a better ally for increasing muscle size, or hypertrophy.

The Benefits of Using Dumbbells:

Whether you use one or two at a time, dumbbells allow both a greater range of motion (ROM) and more freedom of movement than the equivalent barbell exercise.

Let’s use the barbell and dumbbell versions of the bench press to illustrate both points.

With a barbell, your range of motion is partly limited by the bar itself, which will eventually come into contact with your body and restrict the movement.

With dumbbells, there’s an obvious advantage in terms of increased ROM and potentially greater joint mobility.

Many people and athletes have limited mobility in joints such as the shoulders, elbows, and wrists.

These limitations are often the result of repeating the same movements without stretching or using those joints through smaller ranges of motion out of habit.

Dumbbells offer more freedom and allow you to work through larger ranges of motion, which can help you maintain mobility, provided the movement is controlled and the weight is appropriate.

As for freedom of movement, your hands are locked into a fixed position when you use a barbell. You can’t freely rotate your wrists or change the orientation of your hands during the exercise.

Dumbbells, however, allow each hand to move independently and let you rotate your wrists at almost any point during the movement.

This can be a key advantage if you have an injury that becomes irritated when lifting with a barbell.

You may find that because dumbbells allow your arms and legs to find a more comfortable, pain-free movement path, while still respecting good movement mechanics, you don’t experience the same joint discomfort that you do with barbells.

(That said, if you replace a good-quality movement with a poor-quality one that no longer meets the basic standards of proper technique, then you’re simply compensating, which isn’t ideal for the healthy development of your body.

The safest and simplest solution is often just to choose a different exercise.)

So when it comes to injury prevention, rehabilitation, and improving joint stability, dumbbells can often offer more possibilities than barbells.

Another key advantage of dumbbells is muscular balance.

When you perform a barbell exercise, your dominant arm can compensate for your weaker arm.

That may help you move more weight, but it can also reinforce existing imbalances and potentially increase your risk of injury over time.

With dumbbells, each side has to handle its own load, so your stronger arm can’t simply take over for the weaker one.

Using dumbbells is an excellent way to identify a side that’s lagging behind and start working on it immediately.

They allow you to develop unilateral strength, which can help bring your weaker side, usually your non-dominant side, back up to speed.

Overall, this can be beneficial and may even help you move more weight when you return to a similar barbell exercise.

For example, dumbbell bench presses can help improve your barbell bench press, especially during the earlier stages of your fitness journey.

Dumbbells also allow countless isolation movements, meaning exercises that mainly involve one joint, such as chest flyes for the pecs or lateral raises for the shoulders.

These movements can’t really be performed in the same way with a barbell, so if maximising muscle growth is your goal, you probably shouldn’t train exclusively with a barbell.

These exercises are often criticised for not being “functional,” with a few exceptions, but even lifters who aren’t training purely for aesthetics can benefit from them.

They’re very effective for targeting specific muscles and can also play a role in injury prevention.

Isolation work can offer excellent value and return on investment regardless of your goals.

Dumbbells can target muscles in ways that barbells simply can’t.

They don’t allow you to use the same kind of crushing loads as barbells, and they are arguably less intimidating to use.

They also tend to lend themselves to exercises that are a little less risky.

For example, the one-arm dumbbell snatch is generally a simpler and safer variation than the more complex Olympic barbell snatch.

But that doesn’t mean dumbbell exercises are injury-proof.

With poor technique, you may eventually end up curled up in the foetal position before you even realise you’ve been performing the exercise incorrectly.

Don’t underestimate the effect dumbbells can have on your body.

For example, it’s not unheard of to tear a pectoral muscle by pushing the range of motion too far during a dumbbell chest exercise.

And simply getting into position for certain exercises, rocking back onto the bench with heavy dumbbells or sitting back up again at the end of a set, can be surprisingly tricky.

I often hear more grunting and shouting in the gym when people are getting into or out of position than during the actual set, because setting yourself up with heavy dumbbells can become a proper balancing act.

That said, barbells generally need to be treated with more respect, especially if you’re starting out and training alone without a coach.

Exercises such as squats, deadlifts, overhead presses, bench presses, and snatches require a solid foundation of strength, mobility, coordination, and control to perform properly.

The barbell is simply a less forgiving tool.

Because there’s very little room to adjust the position of your hands or arms during a set, the movement path is much more restricted.

If your shoulders, knees, or lower back aren’t positioned properly, you can get injured.

That’s one reason why back injuries are more commonly associated with heavy back squats and deadlifts than with dumbbell variations of similar movements.

A Few Suggestions:

I’d suggest staying away from heavy barbell work if you already have a lot of injuries or clearly visible muscular imbalances, especially if you’re training without a coach, because barbell exercises can sometimes make those imbalances worse.

When starting out in the gym, consider prioritising dumbbells, bodyweight exercises, and resistance bands before jumping straight into heavy barbell training.

Or start with lighter barbells and ask the staff at your gym for advice on exercise technique.

They don’t bite.

Worst-case scenario, they’ll tell you they can’t coach you because there are personal trainers in the gym for that, in which case, go bother one of those coaches instead.

Usually, they’ll be happy to help you with the execution of one exercise, although they probably won’t give you a full detailed training programme for free.

In general, the true added value of the barbell really shows itself in maximal-strength exercises once you reach a certain level and dumbbells become difficult to stabilise.

That doesn’t mean you have to wait until then to use a barbell.

You can absolutely use it earlier for variety and to prepare yourself for heavier barbell exercises later on, as long as you choose weights you can control properly.

My Favourite Barbell Exercises:

Deadlift

Lunges

Clean

Suitcase Deadlift

Front Squat

My Favourite Dumbbell Exercises:

Biceps Curl

Shoulder Press

Scaptions

Row

If you’re interested in personal training, don’t hesitate to contact me to start, or continue, progressing towards your goal.

Here’s a link to the booking section of my website:

https://www.firefly-zone.be/en/reservation

Booking is quick and easy. If you’d rather not use the booking system, you can always contact me directly on 0489 55 11 11 or send me an email at coachben@firefly-zone.com.

I’ll get back to you as soon as possible.

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