Pain guide · Back pain

Lower back pain when doing kettlebell swings: the hinge, the top of the swing, the bell and load

Lower back pain from kettlebell swings usually comes from how the swing is done rather than from the swing itself. A swing is a fast hip hinge that loads the lower back moderately, so when the knees push forward and the hips drop into a squat, the bell is lifted with the arms, or you lean back at the top, the back ends up doing work the hips should do, and a heavier bell or a long, tiring set makes that worse. Where it hurts is the best clue: a pumped, aching lower back during sets points to the hinge, one side below the belt by the dimple at the back of the pelvis to the sacroiliac (SI) joint, and pain or tingling down one leg to a nerve. Kettlebell deadlifts first, a high hike, a tall finish, a lighter bell and shorter sets usually help, and kettlebell training has eased back pain in a small trial. No study has counted back pain from swings, so this guide says where each piece of advice comes from.

This guide starts with the signs that need help, from a 999 call for numbness around the genitals or bottom, new bladder or bowel trouble or weakness in both legs, to the hernia warning signs and a same-day check through the National Health Service's 111 line (NHS 111) or a general practitioner (GP) for back pain with a fever, after a fall, or with leg weakness that's getting worse. It then maps the causes by where it hurts, explains what the lab studies show about the hinge, the top of the swing, the bell's weight and height, one-armed and overhead swings and tiring sets, shows how to change your swing today, and gives a three-stage plan with a 3D demo of every move, from hinge practice back to swing intervals.

3-stage exercise plan When to get help 38 sourcesUpdated 28 October 2026

When to get help first

Exercise is for pain that has been checked or is clearly mild and settling.

Get urgent medical help if

Call 999 or go to A&E: loss of feeling or numbness around the genitals or bottom, new trouble peeing or controlling your bladder or bowels, changes in genital sensation during sex or problems with erections or orgasm, or pain, tingling, weakness or numbness in both legs. These are signs of cauda equina syndrome, which needs treating in hospital urgently. Don't drive yourself.
Call 999 or go to A&E: back pain with chest pain, or back pain that started after a serious accident, such as a car crash.
Same day (NHS 111): back pain after a new, significant injury in the last 7 days, such as a fall from a height (off a box, a bar or rings) or a direct blow to the back.
Call 999 or go to A&E: severe hip pain after a fall or injury, or you cannot stand, walk or put weight on the leg. In an older adult this can be a broken hip; the leg may be at an odd angle or look shorter. Don't drive yourself.
Same day (GP or NHS 111): back pain and you feel hot, cold, shivery or generally unwell, or severe pain that starts suddenly or is getting worse quickly.
Ask for an urgent GP appointment or get help from NHS 111 if you have severe hip pain that started suddenly but you've not had a fall or injured your hip, your hip is swollen and feels hot, the skin around your hip has changed colour, or you have hip pain, feel generally unwell and have a high temperature (or feel hot, cold or shivery). A hot, swollen hip with a high temperature can be a joint infection.
Same day: leg weakness that is getting worse; new leg pain with a history of cancer, HIV, TB or inflammatory arthritis; or leg pain with a fever, feeling unwell, loss of appetite, unexplained weight loss or night sweats.
Same day (urgent GP appointment or NHS 111): new difficulty lifting the front of your foot or toes (foot drop), or a foot that slaps down or catches as you walk, especially if it is getting worse. Weakness in both legs, or with numbness around the genitals or bottom or bladder or bowel changes, is the 999 emergency above.
Call 999 or go to A&E now if you have a femoral hernia (a small lump at the top of your thigh, in your groin) and very bad tummy pain, you feel sick or you're being sick, you cannot fart or poo, you have a high temperature or you feel hot, cold or shivery, or you've suddenly become confused. Do not drive to A&E. With any other hernia and pain in or around it, a bloated tummy, feeling or being sick, vomiting blood or vomit that looks like coffee grounds, constipation, a high temperature or feeling hot, cold or shivery, or sudden confusion, get help from NHS 111.
Call 999: sudden, severe pain in the tummy or back, which can come with breathlessness, pale or grey skin, or collapse. It can be a burst abdominal aortic aneurysm, most common in men aged 65 or over and in people who smoke or used to smoke.
Same day: you have or have had cancer, and new back pain that is severe and doesn't let up, is getting steadily worse, is worse at night and disturbs your sleep, is worse when you cough, sneeze or strain, or comes with tenderness over the spine. Contact your cancer team or GP urgently. With cancer, new weakness, difficulty walking, numbness or bladder or bowel problems are an emergency.
Same day (call NHS 111, or go to A&E if you feel very unwell): after a big or unusual session, such as hundreds of squats, sit-ups, back extensions or burpees, a challenge or a new class, muscle pain, swelling or weakness far worse than the session explains, and dark pee (red, brown, tea or cola coloured), sometimes starting hours or days later. Dark pee isn't always there, so muscles far sorer, more swollen or weaker than the session explains still need the same-day check. It can be rhabdomyolysis, a breakdown of muscle that can harm the kidneys.

See a doctor or physiotherapist if

Back pain that hasn't improved after a few weeks of looking after it at home, stops you doing day-to-day activities, worries you, or you're struggling to cope.
Pain, tingling or numbness spreading below the knee that isn't settling after a few weeks, is getting worse or stops your normal activities: see a GP.
Pain that doesn't improve with rest or is worse at night, or pain that is worse when you sneeze, cough or poo.
Unexplained weight loss, or a lump, swelling or change in the shape of your back.
Pain at the top of the back, between the shoulders, rather than in the lower back.
A teenager or young adult whose low back pain is worse arching backwards and hasn't settled after a couple of weeks: stop the lifts that arch the back and get it checked by a GP or a sports medicine doctor or physiotherapist. It can be a stress fracture of the spine (spondylolysis), which usually does well without surgery when it's found.
A lump in the groin, upper thigh or tummy, especially one that appears when you cough or strain and goes when you lie down: see a GP, as it may be a true hernia. A femoral hernia (a small lump at the top of the thigh, mainly in women over 50, though it can happen to anyone) needs treating in hospital.
Sudden new back pain after a minor fall, lift, cough or sneeze, from 50 or past the menopause, or if you take long-term steroid tablets; or height loss, a curved spine or a change in posture: see a GP. It can be a spinal fracture.
Back pain that started before 45 and has lasted more than 3 months, especially if it started before 35, wakes you in the second half of the night, comes with buttock pain, gets better with movement or within 48 hours of anti-inflammatory painkillers, or you have or have had arthritis, pain where a tendon attaches to bone (enthesitis) or psoriasis, or a parent, brother, sister or child with spondyloarthritis. These can point to inflammatory back pain (axial spondyloarthritis, such as ankylosing spondylitis). The National Institute for Health and Care Excellence (NICE) asks GPs to refer people with 4 or more of these 9 features to a rheumatologist, and to do a blood test for the HLA-B27 gene marker if exactly 3 are present, referring if it is positive.
A strain that is getting worse, or isn't feeling better after looking after it yourself: see a GP or physiotherapist. In many areas you can refer yourself to physiotherapy.

Where does it hurt?

Location narrows the likely causes; it does not diagnose.

Across the lower back, both sides, a pumped ache that builds through a set of swings

Usually the back muscles doing work the hips should do: squatting the swing, lifting the bell with your arms, leaning back at the top or rounding as you hike the bell. Go back to kettlebell deadlifts for a while and rebuild the hinge.

The back, hips and hamstrings, a dull ache a day or two after a new or bigger swing session

Muscle soreness, which fades within days. Muscles far sorer, more swollen or weaker than the session explains need a same-day check.

Read: Back pain after a workout →A sudden sharp twinge or catch during a set, then stiff, often on one side

Ordinary low back pain, often a pulled muscle, which eases over days to weeks. The back spasm guide covers the first days.

Read: Back spasm and pulled back muscle →A pinch in the lower back at the top of the swing, worse when you lean back

Often from leaning back past straight to finish the swing (our reading; nobody has measured the spine at the top of a swing). Finish tall with your ribs down.

Read: Back pain bending backwards →Low on one side, below the belt by the dimple at the back of the pelvis, into the buttock

Possibly the sacroiliac (SI) joint, which a physiotherapist recognises with a cluster of tests rather than a scan.

Read: SI joint pain →Down one leg below the knee, with pins and needles or numbness

A trapped nerve (sciatica), often from a disc. Stop or shrink anything that sends it further down the leg.

Read: Sciatica →Deep in the buttock at the sitting bone, or the back of the thigh

Swings work the hamstrings hard. A deep ache at the sitting bone, worse sitting and hinging, points to the hamstring tendon; a sudden pain with bruising later is a strain, which our hamstring strain guide covers.

Read: High hamstring tendinopathy →A sharp pain at the side of the chest or ribs during or after swings

Possibly a strained muscle between the ribs; one was reported during swings in a trial in older adults. Chest pain that feels tight or spreads to your arm, neck or jaw is a 999 call.

Read: Chest muscle pain →Between the shoulder blades, or the mid or upper back

Often the upper back muscles holding your arms and the bell (our reading). The NHS asks you to see a GP for back pain that comes from between the shoulders.

Read: Upper back pain →A teenager whose back hurts more arching back, for more than a couple of weeks

It can be a stress fracture of the spine (spondylolysis): get it checked, as the warning signs say.

Read: Spondylolisthesis →Sudden pain after a modest lift from 50, or with low bone density or long-term steroid tablets

It can be a spinal fracture: see a GP.

Read: Spinal compression fracture →The same pain in deadlifts, squats or hip thrusts

The same causes. Our deadlift guide covers getting back to the bar.

Read: Back pain after deadlifts →

Understand it

What a swing asks of the lower back, and what no study has countedEmerging evidence

A swing is a hip hinge done fast: the hips push back as the bell is hiked between the thighs, then snap forward so it floats out in front, while the back holds its shape and the arms only steer. With a 16 kg bell, the back muscles worked at about half their maximum and the glutes at about 80%, and the modelled load on the lower back was about 3,200 N (newtons) at the bottom of the swing, in 7 men. The study's authors note a backward shear between the lowest two vertebrae, the opposite way to a traditional lift, and that a few people find swings irritate their back.

A scoping review summarises the same study's other figures: a peak of 3,195 N, a backward shear of 461 N, and the lower back moving from about 26 degrees of bending at the bottom of the swing to 6 degrees at the top. It reads these loads as low, but warns they may not stay low with heavier bells. In 30 adults, heavier bells did raise the turning load at the lower back; late in long rounds, the push into the floor rose and hip power fell; and one-armed swings made the opposite side of the back work 14% to 25% harder.

No study has counted back pain from swings, measured the lower back in people with back pain while they swing, or measured the spine at the top of the swing. So the map on this page comes from what each cause is known to do.

Sources 1, 2, 3, 4, 5, 6

Hinge, not squat, and finishing the hipsEmerging evidence

In 14 people, a hinge-style swing worked the hamstrings harder than a squat-style swing, and in 16 athletes the swing favoured the inner hamstring. No study has compared the back's load in the two styles: the hinge is the swing as it is taught, and the squat-style swing is a different exercise rather than a proven harm.

Novices finished their swings about 9 degrees short of a straight hip on average (19 young adults), and people learning from a video changed their pattern within a week. In 33 adults, one short hinge lesson changed their hinge angles straight away, though the authors say that doesn't show any effect on the back.

Sources 7, 8, 9, 10, 11

Who gets itEmerging evidence

People new to swings; people who jump to a heavier bell, longer sets, intervals or challenges such as "100 swings a day"; people with back pain from other causes that swings stir up; and older beginners. In 32 adults aged 59 to 79 who did 12 weeks of supervised kettlebell classes, there were four minor problems: one woman's long-standing back pain flared after a session with many kettlebell deadlifts, two people strained a rib muscle (one during swings) and one had shoulder pain.

Kettlebells were named in 0.8% of women's and 0.1% of men's weight-training injuries in US emergency departments, though the equipment often wasn't recorded. A scoping review found 3 published injury case reports, each with a likely error in training load. No study gives the share of each cause of back pain in swings. Serious causes are rare: the NHS says that, very rarely, back pain is a sign of a serious problem such as a broken bone, cancer or an infection, and the warning signs above pick these out.

Sources 9, 10, 3, 4, 14, 15, 2

When a scan helps, and what it can't tell youStrong evidence

Only with warning signs, or in a specialist setting when the result would change what happens next: the National Institute for Health and Care Excellence (NICE) advises against routine imaging for low back pain. Scans of people without back pain often show changes: disc wear in 37% at 20 and 96% at 80, and disc bulges in 30% and 84%. SI joint pain is recognised by a cluster of examination tests (3 or more of 6 positive was 94% sensitive in 48 patients), not by a scan.

Sources 17, 18, 12

How it usually goesEmerging evidence

No study follows back pain from swings. In new episodes of low back pain, average pain fell from 56 to 26 out of 100 within 6 weeks and was 21 at a year, while pain that had already lasted months changed little. The NHS says back pain usually improves within a few weeks but can last longer or keep coming back. In the workplace trial, back pain eased more over 8 weeks of kettlebell training than in the control group. No one can promise a date.

Sources 19, 16, 20

What helps, and how strong the evidence is

Swings aren't bad for your back, and kettlebell training eased back pain in one small trialEmerging evidence

In 40 adults from jobs where aches are common (85% women, with mild pain on average), 8 weeks of workplace kettlebell training three times a week eased low back pain by 1.4 points out of 10 more than in a control group (the 95% confidence interval ran from 0.02 to 2.7 points), eased neck and shoulder pain by 2.1 points and raised back strength. The trial's papers describe the training as "ballistic full-body kettlebell exercise" and as kettlebell swings, so it doesn't show what swings alone do, or what they do in severe or recent pain.

A scoping review of 99 kettlebell publications found mostly small, low-quality studies with trivial to small effects, and no adverse events reported in clinical trials, though it couldn't tell whether that reflected safety or poor reporting. The older-adult trial and the emergency department data above point the same way: problems happen, mostly minor and mostly linked to load.

Sources 20, 21, 2, 14, 15

The bell, the swing's height and the set length change the loadEmerging evidence

Heavier bells (10%, 15% and 20% of body weight) raised the turning load at the lower back, the hip and the ankle in 30 adults, and late in each 30-second round of a 10-round protocol the push into the floor rose while hip power fell, which the authors flag as a possible injury concern. Changing how high a 56 kg bell was swung changed the work done in 15 trained men, so the swing's height is one way to make it easier or harder.

The overhead (American) swing gave 42% more peak hip power than a chest-height swing in 15 women and took longer per rep; peak joint angles didn't differ between the two in 15 adults, and the researchers suggest adding bell weight before going overhead. The swing is a power exercise: in 16 men its power beat the back squat's, and 6 weeks of twice-weekly swing intervals raised strength and jump height as much as jump squat training did in 21 men. These are lab studies and small trials in people without back pain.

Sources 3, 4, 22, 23, 24, 25, 26

Exercise helps back pain, and no type is bestStrong evidence

In a Cochrane review of 249 trials, exercise eased long-lasting low back pain by about 15 points out of 100 against no treatment, usual care or placebo (moderate certainty), with mostly minor harms such as muscle soreness. Advice to stay active did slightly better than advice to rest in bed. NICE encourages carrying on with normal activities and suggests group exercise for a flare-up.

A high-load lifting exercise (the deadlift) helped recurring back pain about as much as low-load motor control exercise over 2 years in 70 people, with 50% to 80% reporting less pain and disability. Kettlebell deadlifts and swings are one reasonable way back, not the best one: the best exercise is the one you keep doing.

Sources 27, 28, 17, 29, 30

In people without pain, swings didn't wear out or sensitise the backEmerging evidence

In 60 healthy adults, a short bout of swings briefly raised the pressure needed to cause pain around the lower back and hip, and in 41 adults an interval swing session didn't measurably fatigue the back muscles. A single set of swings did tire the back extensors in 8 men, less than an isolated back extension machine. These were healthy people tested over minutes, so they say little about back pain itself.

Sources 31, 32, 33

A rounded back and lifting techniqueMixed evidence

In a review of 11 low-quality studies, how much people bent their lower backs while lifting wasn't a risk factor for back pain starting or lasting, and in 9 trials (20,101 workers) training in lifting technique didn't prevent back pain. So the swing advice on this page is about comfort and spreading the load to the hips, not a proven way to prevent back pain. A back that rounds more and more as you tire is still a good reason to end the set (our suggestion).

Sources 34, 35

How much pain is OK while you exercise?

Up to about 5 out of 10, settled within an hour, no worse the next morningEmerging evidence

This guide uses the back hub's rule, as our other back movement guides do. Some discomfort during exercise is fine, and it does not mean you are doing damage. Aim for pain you would call mild to moderate, no more than about 5 out of 10. It should settle within an hour or so, and your back should be no worse the next morning. If it is worse, do less next time (fewer reps, a smaller range, a lighter load), not nothing.

Leg symptoms are the exception: stop or shrink any movement that sends pain, pins and needles or numbness further down your leg. If leg symptoms move back towards your spine, that is a good sign, even if your back aches a little more for a while.

NHS inform's back exercises use the same bands (0 to 3 minimal, 4 to 5 acceptable, 6 to 10 excessive) and want your back no worse the morning after. The NHS back pain page is stricter: stop if your pain gets worse and see a GP. In 7 trials of long-lasting muscle and joint pain, exercise that allowed some pain did no harm.

For swings (our suggestion, built on these rules): judge each set by its last reps, and use the step of the ladder (hinge practice, kettlebell deadlift, swing, intervals, one-armed and overhead swings), the bell and the set length where your back stays at 5 out of 10 or less and is no worse the next morning. A lower back that pumps up or aches during a set means the hips aren't doing the work: end the set and go back a step, not to nothing. Pain or tingling spreading down a leg, a sharp catch, or any warning sign isn't a pain-rule question.

Sources 36, 16, 37

The exercise plan: 3 stages

Start at the first stage. Each move opens a full guide with a 3D demo.

Stage 1

Keep moving, take the speed out

About weeks 0 to 2, 2 or 3 short sessions a week with walking on most days: settle the back without resting in bed, and rehearse the hinge slowly. No swings, cleans, snatches or intervals for now. Doses are editorial unless a source is named.

Treadmill walking demonstrated on the 3D figure

3D demoTreadmill walkingBeginner · Cardio machine

5 to 10 minutes, several times a day · As in our back movement guides (editorial); walking outdoors counts the same

Harder: Treadmill jogging

3D demoCat-cowBeginner · No equipment

8 slow waves, small range · As in our deadlift back guide (editorial)

Harder: Half lord of the fishes (Ardha Matsyendrasana)

Hip-hinge practice demonstrated on the 3D figure

3D demoHip-hinge practiceBeginner · No equipment

2 or 3 sets of 8, tapping your hips back to a wall · Editorial; the first step of our kettlebell swing plans

Harder: Kettlebell deadlift

Glute bridge demonstrated on the 3D figure

3D demoGlute bridgeBeginner · No equipment

2 or 3 sets of 10, ribs down at the top · Editorial

Easier: Pelvic tilt into bridge · Harder: Single-leg glute bridge

3D demoBird dogBeginner · No equipment

2 or 3 sets of 6 to 8 each side, 3 to 5 s holds · As in our deadlift back guide (editorial)

Easier: Bird dog, one limb at a time · Harder: Bear crawl

Kettlebell deadlift demonstrated on the 3D figure

3D demoKettlebell deadliftBeginner · A kettlebell

3 sets of 8 to 10, light to start, the bell between your feet, set down each rep · As in our back pain plans (editorial)

Easier: Hip-hinge practice · Harder: Dumbbell Romanian deadlift

Move on when: You can walk for 15 to 20 minutes and get through daily tasks, kettlebell deadlifts pass the pain rule, and your back is no worse the next morning, for a week (editorial).

Follow along: a timer, a cue and the next move, one step at a time.

Stage 2

Load the hinge and the trunk

About weeks 2 to 6, 2 or 3 sessions a week: a heavier, crisp hinge at a steady speed, the glutes finishing the hip without a lean back, and the trunk resisting bending and twisting.

3D demoKettlebell deadliftBeginner · A kettlebell

3 sets of 10, building up to your swing bell or heavier · Editorial; our deadlift back guide's test is a heavy bell for 3 sets of 10

Easier: Hip-hinge practice · Harder: Dumbbell Romanian deadlift

Cable pull-through demonstrated on the 3D figure

3D demoCable pull-throughBeginner · A cable machine

2 or 3 sets of 10 to 12, standing tall at the top without leaning back · Editorial; it rehearses the swing's hip snap at a controlled speed, and its move page warns against leaning back

Easier: Hip-hinge practice · Harder: Dumbbell Romanian deadlift

Dumbbell Romanian deadlift demonstrated on the 3D figure

3D demoDumbbell Romanian deadliftIntermediate · A dumbbell

3 sets of 8 to 10, to mid-shin or where your hamstrings stop you · As in our deadlift back guide (editorial)

Easier: Hip-hinge practice · Harder: Single-leg Romanian deadlift

Suitcase carry demonstrated on the 3D figure

3D demoSuitcase carryIntermediate · A dumbbell + A kettlebell

3 walks of 20 to 30 m each side, standing tall · As in our deadlift back guide (editorial)

Easier: Farmer's carry · Harder: Overhead carry (waiter's walk)

Half-kneeling Pallof press demonstrated on the 3D figure

3D demoHalf-kneeling Pallof pressBeginner · A band + An anchor point

2 or 3 sets of 8 to 10 each side · As in our back pain guides (editorial)

Harder: Pallof press

Knee side plank demonstrated on the 3D figure

3D demoKnee side plankBeginner · No equipment

3 holds of 15 to 20 s each side · As in our deadlift back guide (editorial)

Harder: Side plank

Move on when: Kettlebell deadlifts with your swing bell or heavier pass the pain rule for 3 sets of 10, pull-throughs feel easy, and your back is fine the next morning, for a week (editorial).

Follow along: a timer, a cue and the next move, one step at a time.

Stage 3

Back to swinging

From about weeks 4 to 6, later after sciatica: crisp swings to chest height, then intervals and your usual bell, one change at a time by the written steps below. No study has tested a return to swings after back pain, so the order is editorial.

Kettlebell swing demonstrated on the 3D figure

3D demoKettlebell swingIntermediate · A kettlebell

6 to 8 sets of 5 to 8 to chest height or lower, about one set a minute, with a lighter bell than before. When 10 swings a set stay crisp, move to intervals: 30 s on and 30 s off, 6 rounds, adding 1 or 2 rounds a week up to 12 · The sets are editorial, as in our kettlebell swing plans; the intervals are the format of a 6-week trial. Start each set with a hike from the floor and end with a park

Easier: Kettlebell deadlift · Harder: Kettlebell clean

3D demoKettlebell deadliftBeginner · A kettlebell

2 sets of 5 with your swing bell, as the warm-up for every swing session · Editorial

Easier: Hip-hinge practice · Harder: Dumbbell Romanian deadlift

Barbell hip thrust demonstrated on the 3D figure

3D demoBarbell hip thrustIntermediate · A barbell + A bench or box

3 sets of 8 to 10 with a thick pad · As in our deadlift hip guide (editorial): hip drive without the speed

Easier: Glute bridge · Harder: Barbell back squat

Back extension on a 45-degree bench demonstrated on the 3D figure

3D demoBack extension on a 45-degree benchIntermediate · A bench or box

2 or 3 sets of 8 to 12, stopping at straight · As in our deadlift back guide (editorial)

Easier: Ball back extension · Harder: Horizontal back extension (hyperextension, Roman chair)

Farmer's carry demonstrated on the 3D figure

3D demoFarmer's carryIntermediate · A dumbbell + A kettlebell

3 walks of 20 to 30 m · As in our deadlift back guide (editorial)

Harder: Suitcase carry

3D demoDead bugBeginner · No equipment

2 or 3 sets of 6 to 8 each side · Editorial

Easier: Dead bug heel taps · Harder: Forearm plank

Move on when: Your usual swing sessions pass the pain rule for 2 weeks. Keep two strength sessions a week with a hinge and trunk work after the pain has gone, because back pain often comes back. If a session flares it, go back a stage for a few days, not to nothing (editorial).

Follow along: a timer, a cue and the next move, one step at a time.

What to change for now

Change the swing today (written steps)

Our 3D figure can't show all of these. They come from lab studies of healthy people, coaching advice and our kettlebell swing guide; where a step is our suggestion, it says so. No trial has tested a change to the swing for back pain.

1. Hinge first: hip-hinge practice and kettlebell deadlifts before swings, moving on once your loaded hinges look the same rep after rep. A short lesson changes the hinge at once, and novices improve within a week.
2. The hike: send the bell high between your thighs, above the knees, with your hips back and your shins nearly vertical. It's a hinge, not a squat: the hinge style worked the hamstrings harder.
3. The top: stand tall like a standing plank, glutes and abs tight, ribs down. Finish the hips (novices stopped about 9 degrees short), but don't lean back past straight (our suggestion).
4. The bell's height: chest height or lower while it's sore. The swing's height changes how hard it is, and the arms only steer the bell; lifting it with the shoulders turns it into a front raise.
5. The bell's weight: a lighter bell for now, because heavier bells raised the load on the lower back.
6. Sets: 5 to 8 crisp swings, about one set a minute, ending the set when the swing slows or your back pumps up. No long sets, timed intervals or swing challenges while it's sore (our suggestion), because fatigue changes the swing late in long rounds.
7. Two hands before one, because one-armed swings load one side of the back more.
8. The chest-height (Russian) swing before the overhead (American) one, and add bell weight before going overhead, as its researchers suggest.
9. To stop mid-set, let the bell swing back through your legs and guide it to the floor; never let go of a swinging bell.

Sources 9, 7, 3, 4, 22, 5, 6, 23, 11

Medicines, belts and hands-on treatment

NICE suggests considering an anti-inflammatory tablet at the lowest effective dose for the shortest time, and doesn't recommend paracetamol on its own or routine opioids; the NHS suggests asking a pharmacist or GP which painkiller suits you, and a heat pack or hot water bottle wrapped in a tea towel for stiffness or muscle spasm. NICE says not to offer belts or corsets for low back pain, and suggests manual therapy, such as manipulation or massage, only as part of a package with exercise.

Sources 17, 16

Everyday life and sport (written steps)

Our suggestions unless a source is named.

1. Walk every day from the start: the NHS says stay active and don't stay in bed for long periods.
2. Lifting at work and carrying shopping: hinge with the load close, two bags rather than one heavy one, and no sudden heavy lifts while it's sore. Training workers in lifting technique didn't prevent back pain, so this is for comfort, not a rule.
3. Gardening and floor jobs: kneel or half-kneel on a pad and change position often.
4. Classes, circuits and CrossFit-style workouts: swap swings for kettlebell deadlifts or hip thrusts until the third stage passes, and leave swing challenges and timed intervals until your usual sessions pass the pain rule.
5. One-armed swings, then the overhead swing if your shoulders allow full overhead reach without arching your back, then cleans and snatches: one change at a time, after a week of passing the rule at the step before.
6. Two or three swing sessions a week with a day between, as the trials trained.
7. Sleep in whatever position is comfortable, and get up and move little and often.

Sources 16, 35, 26, 20

Positions to swap, and why

Habit or position	Why it matters	Instead
Squatting the swing: knees forward, hips dropping	A swing is a hinge; the hinge style worked the hamstrings harder, and squatting it is the commonest learner mistake our swing guide sees.	Hinge practice, then kettlebell deadlifts, then lighter swings.Try: Kettlebell deadlift
Leaning back at the top, or pushing the hips past straight	It adds load to the lower back for no gain, and a pinch at the top points to it (our reading).	Finish tall like a standing plank, ribs down; practise with a pull-through.Try: Cable pull-through
Lifting the bell with your arms, or chasing height	It turns the swing into a front raise and arches the back to get the bell up.	Chest height or lower; let the hips throw the bell.
A heavier bell while it's sore	Heavier bells raised the load on the lower back in a lab study.	The lighter bell, in crisp sets.
Long sets, timed intervals and swing challenges while it's sore	Fatigue changes the swing late in long rounds.	Sets of 5 to 8, about one a minute.Try: Kettlebell swing
One-armed swings early on	They make one side of the back work harder.	Two hands first.
The overhead (American) swing while it's sore	It's a longer, harder rep for the hips, and it needs full overhead reach without arching the back.	The chest-height swing.Try: Kettlebell swing
Training through pain or tingling down a leg	That is a nerve: the back hub's rule says stop or shrink any movement that sends it further down.	The first-stage moves, and see a GP if it lasts.Try: Bird dog
A belt as the treatment	NICE says not to offer belts or corsets for low back pain.	The staged plan.
Bed rest and long spells sitting	Advice to stay active does better than advice to rest in bed.	Short walks, little and often.Try: Treadmill walking
Swings with osteoporosis, or after a spinal fracture	With osteoporosis, learn it with a coach and stop the set when the back starts to round; leave it out after a spinal fracture.	Kettlebell deadlifts, learned with a coach.Try: Kettlebell deadlift

Routines to follow

Learn the kettlebell swing

A 25-minute practice session for your first kettlebell swings: hip hinge drills, kettlebell deadlifts, then short sets of swings with a park after each.

25 minBeginner8 movesA wall, A kettlebell

Learn to deadlift: hinge to bar workout

A 30-minute session from the hip hinge to your first deadlift: hinge practice, kettlebell deadlifts, slow Romanian deadlifts, a light bar and a carry.

30 minBeginner9 movesA kettlebell, A dumbbell

Kettlebell swing workout: 12-minute intervals

A 20-minute kettlebell swing workout: 30 seconds of swings, 30 seconds of rest, building to the 12 rounds a training trial used, then carries.

20 minIntermediate7 movesA kettlebell, A dumbbell

Kettlebell workout

A 30-minute full-body kettlebell workout: deadlifts, swings, cleans, presses, rows, halos and carries.

30 minIntermediate9 movesA kettlebell, A dumbbell

McGill big 3 core routine

The McGill big three for the core: curl-ups, side planks and bird dogs, each held for 10 seconds at a time in falling sets of 5, 3 and 1 reps.

12 minBeginner3 movesNo equipment

Posterior chain workout: good mornings, hip thrusts, back extensions and pull-throughs

A 45-minute gym session for the back of your body: light barbell good mornings, hip thrusts, 45 degree back extensions, cable pull-throughs and a carry.

45 minIntermediate8 movesCardio machine, A barbell

More moves for this area

Questions people ask

Why does my lower back hurt after kettlebell swings?

Usually because your back is doing work your hips should do: squatting the swing, rounding as you hike the bell, lifting it with your arms or leaning back at the top. Go back to kettlebell deadlifts, then swings with a lighter bell. A dull ache a day or two later is soreness; sharp or lasting pain is more likely a strain.

Should I feel kettlebell swings in my lower back?

You'll feel your back muscles working: they reached about half their maximum with a 16 kg bell in a lab study. But the main effort should be in your glutes and hamstrings, and a back that pumps up or aches during sets is the sign to stop and fix the hinge.

Are kettlebell swings bad for your back?

No. They load the lower back moderately, and kettlebell training eased back pain a little in a small workplace trial. A few people find they irritate the back, usually with a heavy bell, long sets or a squat-style swing.

Can I do kettlebell swings with lower back pain?

Often, yes, built back in stages: kettlebell deadlifts first, then swings with a light bell in short sets that pass the pain rule. Pain or tingling down a leg is the exception: stop and follow our sciatica guide.

Can kettlebell swings help lower back pain?

They can be part of getting better, because exercise helps back pain and no single type is best. One small trial found workplace kettlebell training eased mild back pain, so swings are an option, not a cure.

What's the most common kettlebell swing mistake?

Squatting it: the knees push forward and the hips drop instead of moving back. Hinge practice, kettlebell deadlifts and the cue "hips back, shins nearly vertical" usually fix it.

Why do I feel a pinch in my back at the top of the swing?

Often from leaning back past straight to finish (our reading; it hasn't been measured). Stand tall like a standing plank with your ribs down, and let the bell float only to chest height.

Is the Russian or American swing better for my back?

Neither has been shown to be safer. The overhead swing is a longer, harder rep for the hips and needs full overhead reach, so keep to chest height while your back is sore.

Should I use a lighter or heavier bell?

Lighter while it's sore: heavier bells raised the load on the lower back in a lab study. Add weight again once crisp sets pass the pain rule.

Can kettlebell swings cause a slipped disc or sciatica?

No study links swings to disc injury. If pain runs down a leg below the knee with tingling or numbness, treat it as sciatica: stop what sends it further down, and check the warning signs.

How long will it take?

No one can promise a date. In new episodes of back pain, average pain more than halved within 6 weeks, and the NHS says back pain usually improves within a few weeks.

When should I see a doctor?

Call 999 for numbness around your genitals or bottom, new bladder or bowel trouble, or weakness or numbness in both legs. Get help the same day for back pain with a fever or feeling unwell, after a fall, or with leg weakness that's getting worse, and see a GP if it isn't better after a few weeks. In the US, call 911 where this page says 999.

Related exercise guides

Kettlebell swings guide

Sources

Exercise education, not a diagnosis or treatment plan. It is written from the guidelines and studies listed above; review by a clinician is pending. If your pain follows an injury, is severe, is getting worse, or comes with any warning sign listed on this page, get it assessed. Health disclaimer.

When to get help first

Get urgent medical help if

See a doctor or physiotherapist if

Where does it hurt?

Understand it

What a swing asks of the lower back, and what no study has countedEmerging evidence

Hinge, not squat, and finishing the hipsEmerging evidence

Who gets itEmerging evidence

When a scan helps, and what it can't tell youStrong evidence

How it usually goesEmerging evidence

What helps, and how strong the evidence is

Swings aren't bad for your back, and kettlebell training eased back pain in one small trialEmerging evidence

The bell, the swing's height and the set length change the loadEmerging evidence

Exercise helps back pain, and no type is bestStrong evidence

In people without pain, swings didn't wear out or sensitise the backEmerging evidence

A rounded back and lifting techniqueMixed evidence

How much pain is OK while you exercise?

Up to about 5 out of 10, settled within an hour, no worse the next morningEmerging evidence

The exercise plan: 3 stages

Keep moving, take the speed out

Load the hinge and the trunk

Back to swinging

What to change for now

Change the swing today (written steps)

Medicines, belts and hands-on treatment

Everyday life and sport (written steps)

Positions to swap, and why

Routines to follow

Learn the kettlebell swing

Learn to deadlift: hinge to bar workout

Kettlebell swing workout: 12-minute intervals

Kettlebell workout

McGill big 3 core routine

Posterior chain workout: good mornings, hip thrusts, back extensions and pull-throughs

More moves for this area

Questions people ask

Related exercise guides

Other pain guides

Sources