Bodybuilding vs powerlifting: size or a heavy total, and what each style of training built in trials

Bodybuilding and powerlifting both happen in the same gyms with the same barbells, but they're scored on different things. A study of competitive bodybuilders describes the sport as aiming to increase muscle mass, symmetry and body definition.¹ A powerlifting meet scores three lifts: the squat, the bench press and the deadlift.² So one trains for how the muscles look, the other for how much they lift.

The training styles that grew out of each have been tested against each other. This page covers what the sports are, how each style trains, what the trials found for muscle size and strength, and the mix of the two people call powerbuilding. How many reps to use for each goal is on how many reps.

Bodybuilding vs powerlifting at a glance

How the two styles train

The trials below set each style up as a strict contrast in load, reps and rest.

• Bodybuilding-style: moderate loads for more reps and shorter rests. In the trials: 3 sets of a 10-rep max with 90 seconds' rest;³ sets of 8 to 12;⁵ or 4 sets of 10 to 12 at about 70% of a one-rep max with a minute's rest.⁶
• Powerlifting-style: heavy loads for few reps and long rests. In the trials: 7 sets of a 3-rep max with 3 minutes' rest;³ sets of 2 to 4;⁵ or 4 sets of 3 to 5 at about 90% with three minutes' rest.⁶

What the trials found

Three eight-week trials in resistance-trained men compared heavy, low-rep training with moderate, higher-rep training directly. The first named them powerlifting-type and bodybuilding-type.

• Work matched: similar size, more strength with the heavy style. 17 well-trained young men were randomly assigned to the bodybuilding-type or the powerlifting-type routine above, with the total work equated. After eight weeks there was no significant difference in biceps thickness. Bench press strength favoured the powerlifting-type group, and the squat leaned the same way. The authors' conclusion: both styles built similar muscle size, and the powerlifting type built more maximal strength.³
• Sets matched: each style won its own test. 19 resistance-trained men did three sets of seven exercises three days a week, either in sets of 2 to 4 or in sets of 8 to 12. The heavy group gained more squat strength; the moderate group gained more thickness on the outer thigh.⁵
• Heavy against high volume: the heavy group did better on two measures. In 29 resistance-trained men, the heavy group's bench press rose 14.8% against 6.9%, and lean mass in the arms 5.2% against 2.2%; the authors summed it up as greater gains in some measures of strength and size. The groups also differed in rest and total work.⁶

Read together: strength followed the heavy style in all three trials, while muscle size came out similar, favoured the moderate style on one measure, or favoured the heavy style on another. The American College of Sports Medicine's 2026 position stand, pooling 137 systematic reviews, found strength enhanced by heavier loads (80% of a one-rep max or more) and muscle growth enhanced by higher volumes, 10 or more sets a week.⁷ In one line: load for strength, enough hard sets for size. How to get stronger and how to build muscle cover each goal on its own.

Do bodybuilders and powerlifters lift differently?

One 2026 study compared athletes from each sport on the same lift. Ten bodybuilders, ten powerlifters, seven para powerlifters and ten untrained people bench pressed at 60 and 80% of their max, with no instruction or with one of three focus instructions (an external focus, the chest or the triceps). At 60% only the bodybuilders showed selective chest activation, and the para powerlifters had higher long-head triceps activity throughout; chest and outer-triceps activity didn't differ between the groups overall.⁴ It's one study of muscle activity, not growth.

What these studies didn't test

The trials ran for eight weeks in resistance-trained men, with each style set up as a strict contrast. None tested women, beginners or mixed programs, and none lasted long enough to show what years of either style build. The athlete study measured one session of bench pressing. So the trials show what load and volume do over a short block, not what either sport will do for you.

How to choose, or mix them

As a practical guide, not a finding:

• You care how you look: train like a bodybuilder. Enough hard sets per muscle each week, a range of exercises, and sets you take close to failure. How many sets per week has the numbers.
• You care what you lift: train like a powerlifter. The squat, bench press and deadlift two or more days a week, heavy sets of a few reps, long rests. The 5x5 workout is one simple version.
• You want both: start each session with a heavy lift for a few sets, then do higher-rep work for the same muscles. That's powerbuilding, below.
• Want a number to track: the strength score calculator turns a squat, bench and deadlift total into a DOTS score.

Common questions

Bodybuilding vs powerlifting vs powerbuilding: what's the difference?

Powerbuilding combines powerlifting and bodybuilding, as one pilot study defines it.⁸ In practice (not a finding) that's a heavy main lift first, for strength, followed by higher-rep work for size.

Bodybuilding vs powerlifting vs weightlifting?

Weightlifting is a third sport, with different lifts: in weightlifting competitions, the final rank is based on the total of the heaviest successful snatch and clean and jerk.⁹ Powerlifting's lifts are the squat, bench press and deadlift;² bodybuilding isn't scored on a lift at all. The clean and jerk has the weightlifting side.

Bodybuilding vs powerlifting vs strength training?

Both are kinds of strength training (resistance training) with different targets. The ACSM's 2026 stand found heavier loads enhanced strength and higher volumes enhanced muscle growth,⁷ which is the split between the two sports.

Is powerlifting good for building muscle?

In the trials above, the powerlifting style built muscle too: similar biceps thickness to the bodybuilding style with the work matched, and more arm lean mass in the heavy group of the third trial.^3,6 With the sets matched instead, the moderate-rep group grew more outer-thigh thickness.⁵

Which makes you stronger?

The powerlifting style, in all three trials: more bench press or squat strength than the bodybuilding style.^3,5,6

If you'd rather not plan it alone

Picking a style is the easy part; setting the loads, the sets and the progression for your week, and changing them when the week changes, is the part a page can't do. Coaching is the version where your workouts live in the Trainerize app, built around the days you actually have, and a weekly call looks at the week you just had and rebuilds the next one. Coaching to build muscle and coaching to get stronger explain how that works, and here's how to apply. Otherwise: pick the style that matches what you care about, write the next eight weeks of it into your log, and judge it at the end.