Strength Training for Golf: Power, Rotation and the Back Nine

Lokh, founder of Forma. 1 August 2026.

Through nine you were two over and striking it well. By the fifteenth you were leaking shots right and you could not work out why.

Nothing changed in your swing thought. What changed is that you had been on your feet for three and a half hours, carrying, and the muscles that hold your posture through the swing had quietly stopped doing it as well. Your spine angle drifted a few degrees, the club came in slightly steeper, and the miss you had not seen all morning started appearing.

That is a fatigue problem wearing the costume of a technique problem, and it is the single most common way amateur rounds fall apart. It is also the one that strength training genuinely fixes.

What the swing actually asks of you

Three qualities, and they are not the ones most people train.

Rotational power. Clubhead speed comes from a sequence that begins with the ground and passes through your legs, hips and trunk before the club sees any of it. The arms are the end of that chain, never the source, which is why upper body strength alone does very little for distance.

Thoracic mobility. Your mid-back needs to rotate. When it will not, the movement has to come from somewhere, and that somewhere is usually your lower back, which is not built to rotate and will eventually object.

Positional endurance. The capacity to hold your posture and produce the same movement at the eighteenth as at the first. Four to five hours of walking, often with a bag, is a real physical demand even though nobody would call it a workout.

The swing is also aggressively one-sided. Hundreds of high-speed rotations in one direction, several times a week for a season, builds asymmetries that nothing else in your life corrects. The gym is where that gets addressed, and it matters more for staying uninjured than for adding yards.

What to train

Two sessions a week, 30 to 40 minutes, stopping two to three reps short of failure. This is the substance of most paid golf fitness programs, minus the packaging.

• A squat pattern. Goblet or back squat, three sets of five to six. Ground force is the start of the sequence.
• A hinge. Romanian deadlift, three sets of six. Hip extension drives rotation and it protects the lower back you are about to ask to work.
• A horizontal pull. Rows, three sets of eight. Counteracts the posture of a life spent leaning over a ball.
• Anti-rotation work. Pallof press or a suitcase carry, two or three sets. Resisting rotation is what lets you produce it efficiently, which sounds like a paradox and is not.
• One explosive rotational movement. Medicine ball rotational throws, three sets of four, thrown as hard as you can with full recovery between sets. Both directions, more reps on your non-dominant side.
• Five minutes of thoracic mobility. Open books, thread the needle, seated rotations. Every session, no exceptions.

Keep the explosive work genuinely explosive. Speed is a quality that degrades the moment you fatigue it, so three or four hard throws with a minute between them beats three sets of twelve, which trains something else entirely.

When to put the sessions in

Here the honest picture is narrower than for a runner or a cyclist, and worth stating precisely.

A round of golf does not register as a big training stress the way a hard run does. Your watch records it, and if you walk and carry it will move your step count and pull your Body Battery down noticeably across four or five hours. But it is not going to reshape your week the way a long ride would.

What it does do is leave you tired, particularly in the legs and lower back, particularly if you walked 36 holes over a weekend. That accumulated tiredness is the thing worth scheduling around.

Two rules cover most of it:

• Nothing heavy through the legs in the 48 hours before a round you care about. Squats on Friday and your back nine on Sunday is where distance and control go. This is the rule that actually protects your scoring.
• The day after a round is a good gym day. You are already a bit tired, the next round is days away, and you are concentrating the fatigue rather than spreading it thin across the week.

In season, keep both sessions and halve the working sets rather than dropping the habit. Winter is when the strength gets built, and it is the only part of the year worth attempting anything unfamiliar. A sub-optimal session is better than no session, and the alternative is arriving every spring at the strength you had two springs ago.

If you ride a cart, most of this section does not apply

Worth separating, because the two versions of the sport make very different physical demands and plenty of advice quietly pretends otherwise.

Walking 18 holes with a bag is around eight miles on your feet under load, spread across four or five hours. That accumulates, it shows in your step count and your Body Battery, and by the closing holes it is a genuine contributor to how you are striking the ball.

Riding a cart is not that. You are still out for four hours, you still make around 70 full-speed rotations, and there is still a real demand on your back and trunk. But the walking fatigue that drives the back-nine drop-off largely is not there, and the scheduling argument above gets correspondingly weaker.

If you ride, place your gym sessions around the rest of your week rather than around your rounds, and put the effort into rotational speed and thoracic mobility instead. The strength work still matters. The timing of it matters less.

Common questions

Will lifting hurt my swing?

Not if you train rotation and thoracic mobility alongside the strength work. The muscle-bound worry came from programs that built stiffness through the mid-back without training the range the swing needs.

How do I add distance?

Train speed as its own quality: medicine ball throws and jumps, low reps, full recovery, never to fatigue. Heavy lifting builds the base that speed sits on, and you need both.

What should a golf fitness program contain?

A squat, a hinge, a pull, an anti-rotation hold, one explosive rotational movement and five minutes of thoracic work, twice a week. That is the substance of most golf strength and conditioning plans. The part worth thinking harder about is where the sessions sit relative to your rounds.

Can I lift the day before a round?

Not heavy legs. Light mobility is fine and probably helps.

Knowing which day is the heavy day

The rules above assume an average week. Yours will include a weekend where you walked 36 holes in the heat, a stretch of bad sleep, and a Monday where you feel fine and are not.

Your watch is tracking the part you cannot feel. Overnight HRV against your own baseline, sleep quality, and how far your Body Battery actually recovered after four hours on your feet with a bag. None of that requires golf to be a heavy training stress. It only requires that being tired shows up, which it does.

Forma reads it and gives you one session for today, sized to what the week has already taken. Recovery, not effort. After a quiet week it gives you the heavy session. After 36 holes and a poor night it gives you the lighter version, and it tells you which signal drove the call.

The same reasoning applied to sports with a bigger training footprint is in strength training for runners, and the rotational-power case is worked through for a faster sport in tennis. Everything is on the training guides hub.