Training article
Machines, Dumbbells Or A Barbell?
Each has a job. The best one is the one you will keep using
General information about training and eating, not personal advice. It is not medical or dietary advice and it cannot account for your circumstances. If you are pregnant, have a medical condition, take medication, or have a history of disordered eating, talk to a GP or a registered dietitian before changing how you eat or train.
People new to a gym are often told that machines are for beginners and barbells are for people who are serious. The evidence does not back the snobbery. A 2023 review that pooled thirteen studies, covering just over a thousand adults, found no difference in muscle growth between training with free weights and training on machines. What it did find is that strength is specific: people got strongest on the kind of equipment they had trained with.
What each one is good for
- Machines move along a fixed path, so the balancing is done for you and all your effort goes into the push or the pull. They are quick to set up and easy to load in small steps, which is why SP First Steps is built on them: you learn to work hard before you have to learn technique under a bar as well.
- Dumbbells make each side work on its own, so a stronger side cannot carry a weaker one, and they let your hands and elbows find their own path. They take more balance, and the jumps between one pair and the next can be large.
- A barbell is where the heaviest loads live. The squat, bench press, deadlift and overhead press in SP Foundations are barbell lifts because a bar lets you keep adding weight in small steps for a long time. It also asks the most of your technique, which is why the demo and cues in the exercise library are worth a look before your first heavy set.
Most good programmes use all three, and most of ours do. What matters more than the tool is effort — sets taken close to the point where the reps slow down — and doing it for months. Building Muscle: What Actually Drives It, above, explains why.
When to bring a barbell in. When the machine version of a movement feels familiar and you can control the weight all the way down, the barbell version is a reasonable next step. Start with the bar on its own, or the lightest load that lets you practise the movement. There is no deadline for it; Choosing Your First Programme, above, says how to tell when SP First Steps has done its job and SP Foundations, the barbell programme, is next.
Equipment is also a way round a problem. If one version of a movement is uncomfortable, another often is not — a dumbbell press where a barbell press bothers a shoulder, or a machine where a free weight does. Swap for today on the Log makes that change for a session. If it hurts rather than aches, though, read Aches, Pain, And When To Stop, above, first.