Pilates for anterior pelvic tilt: what it can and can't change

A forward tilt is normal

In 120 healthy young adults, 85% of men and 75% of women stood with their pelvis tipped forward. Part of what's measured is the shape of the pelvis itself, which varied by up to 23 degrees between pelvises.

Sources 1, 2

It doesn't predict back pain

On average, people with back pain don't stand with more pelvic tilt or a deeper lower-back curve, and research hasn't shown that posture causes back pain.

Sources 3, 4, 5

Exercise hardly changes standing posture

In healthy people, stretching didn't change the posture of the pelvis and lower back, and programmes aimed at an excessive tilt changed it by 2 degrees or less.

Sources 6, 7

Pilates trials show no clear change

In 236 teenagers, 9 months of Pilates didn't reduce pelvic tilt significantly more than in a comparison group, and in people with back pain, Pilates improved disability but not alignment on X-ray.

Sources 8, 9

Do it for strength and comfort

Pilates strengthens the trunk and hips, loosens the hamstrings and helps back pain about as much as other exercise. Do the moves for what they build, not to fix an angle.

Sources 10, 11, 12

What it is

Your pelvis tips forward and back on your hip joints like a bowl. In an anterior tilt, the front of the pelvis sits lower than the back. It's usually measured as the angle between the bony points at the front and back of the pelvis. Tipping your pelvis on purpose changes your lower-back curve: tilting fully forward deepened the curve by about 11 degrees in one study.

Sources 1, 13, 14

Most people have one

In 120 healthy adults with an average age of 24, 85% of men and 75% of women had an anterior tilt, 6% and 7% a backward tilt, and 9% and 18% were level. On average, women tilt forward more than men.

Sources 1, 15, 16

Some of it is bone shape

In 30 pelvises held in the same position, the usual measurement varied from 0 to 23 degrees just because pelvises are shaped differently, with up to 11 degrees between the two sides of one pelvis. So a large measured tilt can be down to the shape of your bones, and every clinical way of measuring tilt has limits.

Sources 2, 13

It hardly predicts your back curve or muscle length

When people stand naturally, pelvic tilt and the lower-back curve are only weakly related, or not at all. Tilt wasn't related to how far the hip extends, to the length of the tummy, back, hip and thigh muscles in 103 teenage girls, or to abdominal strength in men. Researchers concluded in 1996 that using tummy strengthening or stretches "to correct faulty standing posture should be questioned".

Sources 17, 18, 19, 20, 21

It doesn't predict back pain

A meta-analysis of 43 studies found that people with back pain stand with no more lower-back curve or pelvic tilt than people without it; they move their lower back less, and more slowly. In 600 adults, back muscle endurance had the strongest link with back pain, while the lower-back curve, pelvic tilt and the length of the hip flexor and hamstring muscles weren't linked. A review of 41 reviews found no agreement that posture causes back pain.

Sources 3, 4, 5

When it matters

Pelvic tilt matters more in some hip and groin conditions, where a physiotherapist may assess and train it. Even there, a 12-week programme in 42 young people with a hip socket problem changed tilt by only about 1.6 degrees.

Sources 13, 22

A theory that tests haven't borne outMixed evidence

The idea is that tight hip flexors and back muscles, with weak glutes and tummy muscles, pull the pelvis forward. Measurement studies haven't found tilt tracking the length or strength of those muscles, and in a study of muscle stiffness the predicted pattern "was not confirmed".

Sources 23, 21, 18, 20

The Thomas test misreads tight hipsEmerging evidence

The modified Thomas test, often used to judge tight hip flexors, picked up a shortfall in hip extension only about a third of the time unless the pelvis was held still, in a study of 29 students.

Source 24

Stretching and strengthening hardly change itEmerging evidence

In a 2024 meta-analysis of 23 studies in healthy people, stretching didn't change the posture of the pelvis and lower back (5 studies), and neither did strengthening (2 studies), though strengthening did improve upper-back and neck posture. The authors found no evidence to recommend stretching to change posture.

Source 6

Programmes aimed at the tilt changed it by 2 degrees or lessMixed evidence

A review found 2 small randomised trials and 2 non-randomised studies of programmes for an excessive tilt; one trial found a reduction of under 2 degrees, and the overall certainty was very low. Small trials of core and corrective programmes report less tilt within the groups that did them, but often have no untreated comparison group.

Sources 7, 22, 25, 26

A stretch changes it for a momentEmerging evidence

One session of hip flexor stretching reduced tilt by about 1 degree straight afterwards, with no change in the lower-back curve. In people with back pain, stretching or strengthening the hamstrings lengthened them but didn't change pelvic tilt.

Sources 27, 28, 29

Pilates trials: no clear change in standing tiltMixed evidence

In 236 teenagers, 9 months of short Pilates sessions in physical education lessons reduced pelvic tilt within the Pilates group (from about 26 to 24 degrees), but the difference from the comparison group, about 2 degrees, wasn't statistically significant. The other studies are small: 6 months of Pilates improved pelvis alignment in 74 women (the abstract gives no angles), Pilates and suspension training both reduced tilt in 20 women with no untreated group, and in 22 people with back pain, Pilates improved disability but not alignment on X-ray.

Sources 8, 30, 31, 32, 9, 33

Pilates and posture: the reviewsMixed evidence

A 2024 review of 18 studies found moderate-certainty evidence that Pilates improved spinal posture angles a little in children and teenagers, but only very low to low certainty in adults. In 50 active adults, 12 weeks of Pilates improved endurance and flexibility but not posture.

Sources 34, 11

What Pilates does changeEmerging evidence

In a Cochrane review, Pilates eased back pain more than minimal treatment and about as much as other exercise. In trials it improved trunk muscle endurance and hamstring flexibility, and let the pelvis tip further in a forward bend: more movement, not worse posture.

Sources 10, 11, 12, 35

How often

Our editorial starting point, as in our anterior pelvic tilt guide: 2 or 3 sessions a week for 6 to 8 weeks, with bridges for 2 to 3 sets of 10 to 12, dead bugs and bird dogs for 2 to 3 sets of 6 to 8 each side, and planks held 3 times for 20 to 45 seconds. Twice a week also counts towards the NHS muscle-strengthening guideline.

Source 36

Neutral or imprint?

Imprint is for moves with both legs in the air; for most other moves, start from neutral. There's no need to tuck your pelvis all day.

Sources 37, 38

If you have back pain

Pilates helps back pain about as much as other exercise, and the National Institute for Health and Care Excellence (NICE) suggests group exercise programmes, including mind-body ones. Skip or shrink any arching move that sends pain down a leg.

Sources 10, 39

Call 999 or go to A&E if you have back pain and

In the US, call 911 for 999, and use your doctor's urgent line or urgent care for NHS 111.

• Pain, tingling, weakness or numbness in both legs.
• A loss of feeling around your genitals or anus.
• Changes in your bladder or bowels, such as difficulty peeing, or peeing or pooing yourself.
• Changes in how your penis or vagina feels during sex, not being able to get or keep an erection, or not being able to orgasm.
• Chest pain.
• It started after a serious accident, such as a car accident.

Source 40

Ask for an urgent GP appointment or get help from NHS 111 if you have back pain and

• You feel hot, cold, shivery or generally unwell.
• It's severe pain that starts suddenly, or it's getting worse quickly.

Source 40

See a GP if your back pain

In many areas you can refer yourself to NHS physiotherapy without seeing a GP first.

• Doesn't improve after treating it at home for a few weeks, stops you doing your day-to-day activities, or worries you.
• Comes with weight loss you can't explain, a lump or swelling in your back, or a change in the shape of your back.
• Doesn't improve after resting or is worse at night, or is worse when sneezing, coughing or pooing.
• Is coming from the top of your back (between your shoulders), rather than your lower back.

Source 40

Hip or groin pain

Hip or groin pain that isn't settling is worth a check with a GP or physiotherapist; pelvic tilt matters more in some hip conditions.

Source 13

"Anterior pelvic tilt causes back pain and must be fixed"Strong evidence

Most healthy people tilt forward, people with back pain don't stand with more tilt, and tilt wasn't linked with back pain in 600 adults.

Sources 1, 3, 4

"It's caused by tight hip flexors and weak glutes"Emerging evidence

In measurement studies, tilt hasn't tracked hip flexor or hamstring length, or abdominal strength in men, and a study of muscle stiffness didn't find the predicted pattern.

Sources 21, 20, 19, 18, 23

"Stretching your hip flexors will straighten your pelvis"Emerging evidence

Stretching didn't change pelvis and lower-back posture in healthy people; one session reduced tilt by about 1 degree straight afterwards.

Sources 6, 27

"Pilates fixes your posture"Mixed evidence

In the biggest trial, Pilates didn't change pelvic tilt significantly more than a comparison group, and in back pain, alignment on X-ray didn't change. Pilates teachers don't teach that neutral means a flat back.

Sources 8, 9, 34, 37

"Keep your pelvis tucked all the time"Strong evidence

Imprint is a teaching position for moves with both legs lifted. Neutral, with its natural curve, is the starting position for most other moves.

Sources 37, 38