Reformer Pilates for Osteoporosis: Safe Exercises and What to Avoid

Important medical notice: this article is for information only and does not replace the advice of your doctor, orthopaedic surgeon, rheumatologist, endocrinologist or any other healthcare professional. Osteoporosis is a medical condition diagnosed by bone densitometry (DXA) that requires specialist follow-up. Before starting Reformer Pilates or any exercise programme, consult your doctor and obtain their express approval. The exercises described in this article are a guide: every person’s clinical situation is different and the programme must be adapted to your T-score, fracture history and general health. The final decision on which exercises are safe for you always rests with your medical team and a qualified instructor experienced with low bone density.

Losing bone mass does not hurt. That is the most dangerous paradox of osteoporosis: bone weakens silently for years and the first sign can be a fracture. In Spain, osteoporosis affects around three million people, most of them postmenopausal women. But it is not inevitable, and it does not mean you have to stop moving. On the contrary: physical exercise is one of the most effective interventions for slowing bone loss, and Reformer Pilates offers an especially suitable way to work safely and progressively.

What Osteoporosis Is and How It Affects Your Bones

Bone is not a static tissue. It is constantly renewed through a process called bone remodelling: osteoclasts break down old bone tissue and osteoblasts build new tissue. Under normal conditions, this balance maintains the density and strength of the bone. When osteoclasts break down more than osteoblasts can replace, bone mass decreases.

Osteopenia is the stage before osteoporosis. Bone densitometry (DXA) diagnoses it when the T-score (the standard deviation from the peak bone density of a healthy young adult) is between -1.0 and -2.5. On its own it does not mean a high risk of fracture, but it is a clear sign that the bones need attention.

Osteoporosis is diagnosed with a T-score below -2.5. At this point, the microarchitecture of the trabecular tissue is deteriorated and the risk of fracture from impacts or falls is notably higher. The most common fractures are vertebral (which can happen even with everyday efforts such as coughing or bending over), hip and wrist fractures.

The menopause is the most important risk factor in women: the fall in oestrogen speeds up bone breakdown during the first 5 to 10 years after the last cycle. In men, bone loss is more gradual, but testosterone deficiency, a sedentary lifestyle, smoking and corticosteroid use are relevant risk factors.

Why Exercise Is Essential for Your Bones

Bone responds to mechanical load. When a muscle contracts and pulls on the bone, or when the skeleton bears body weight against gravity, the bone tissue receives signals to densify and strengthen. This principle, known as Wolff’s law, is the scientific basis of exercise as an intervention for osteoporosis.

The exercises that most stimulate bone formation are moderate-impact ones (running, jumping) and progressive resistance ones (weight training). However, in people with established osteoporosis, impact and heavy loads can pose a fracture risk. This is where Reformer Pilates finds its place: it offers progressive resistance and loading without impact, in a controlled environment that minimises the risk of falls and fractures.

How Reformer Pilates Helps People with Osteoporosis

Spring Resistance as Progressive Load

The Reformer works with a system of interchangeable springs that let the resistance be regulated precisely. This makes it possible to design a progressive loading programme adapted exactly to the person’s capacity: starting with low resistance and increasing it gradually as muscle strength improves.

Unlike free weights, where an error in execution can generate unpredictable load spikes on the skeleton, the Reformer springs provide smooth, continuous resistance that can be modulated at any moment. This reduces the risk of accidental overload on fragile bones.

Controlled Movements That Reduce Fracture Risk

The Reformer demands precise motor control in every exercise. The student has to keep their alignment, control the range of movement and manage the resistance actively. This level of control protects the bone from sudden movements or risky positions. In addition, instructors can adjust each person’s movement pattern in real time, something impossible on conventional gym machines.

At Pinar Pilates we work in groups of 8 people maximum, which lets each instructor watch and correct every student with a level of attention a large group does not allow.

Balance Training and Fall Prevention

90% of hip fractures in older people are the result of a fall. Osteoporosis does not cause falls: it makes them more dangerous. So reducing the risk of falling is as important as improving bone density.

The Reformer includes standing exercises on the moving platform that progressively challenge balance and postural control. As the proprioceptive system improves, the person responds faster and more effectively to disturbances of balance, reducing the likelihood of a fall.

Muscle Strengthening with Priority on the Extensors

The spinal extensors (multifidus, erector spinae) and the hip extensors (glutes, hamstrings) are fundamental for posture and spinal protection. In people with vertebral osteoporosis, good tone in these muscles reduces the load on the vertebral bodies and protects against compression fractures.

The Reformer lets you work these muscle groups with specific resistance and in functional movement patterns, without subjecting the spine to loaded flexion, which is the position of greatest risk.

You can read more about how the body is worked on the Reformer in the article on Reformer Pilates exercises and on its general benefits.

Exercises to Avoid with Osteoporosis

Before talking about what you can do, it is essential to know what you must avoid. With osteoporosis, certain movements pose a real risk of fracture, especially vertebral fracture.

Loaded spinal flexion. The Hundred, the Roll Up, the Roll Down, the classic version of Stomach Massage and any exercise that involves curling the spine forward under resistance disproportionately increase the pressure on the anterior vertebral bodies. This kind of load is responsible for vertebral compression fractures, which can happen even without a fall or impact.

Trunk rotation combined with flexion. The combination of flexion and rotation (as in some oblique exercises) generates torsional forces on the vertebral bodies that osteoporotic bone tolerates poorly.

Prone exercises with extreme spinal extension. An excessive range of extension (such as the Swan Dive or Rocking) can compress the facet joints and cause pain or injury in people with severe osteoporosis.

Impacts on the platform. Jumps or hard landings on the Reformer’s Jump Board are not appropriate in advanced stages of osteoporosis.

Excessive axial load on the spine. Some standing exercises on the Reformer with high resistance apply direct load on the spinal column. With osteoporosis, the resistance must be kept within controlled ranges and progressed very cautiously.

See the article on contraindications of Reformer Pilates for a fuller picture of the situations that require caution or stopping exercise.

5 Safe Reformer Exercises for People with Osteoporosis

These exercises must always be done under the supervision of an instructor experienced in adapting for osteoporosis. The resistances and ranges of movement described here are a guide: your instructor will adjust them to your specific situation.

1. Supine Footwork

Footwork is the opening exercise of any Reformer class. Lying on your back on the carriage, with the feet on the footbar, you extend the legs against the spring resistance and bend them again.

For people with osteoporosis, Footwork is ideal because it loads the bones of the legs (femur, tibia) through active muscle contraction, without putting the spine in a risky position. The spine stays neutral on the carriage. The resistance can be graded from a light spring to more demanding set-ups as strength progresses. It strengthens the quads, hamstrings, glutes and calves.

2. Bridging (Pelvic Curl) with Carriage Support

In the Pelvic Curl, lying on the carriage with the feet flat on the bar, you lift the pelvis vertebra by vertebra until you form a line from the shoulders to the knees. Unlike the Roll Up, this exercise takes the spine into extension (not flexion) and the axial load is minimal because the spine is horizontal.

Bridging strengthens the hip extensors (glutes and hamstrings) and activates the spinal extensors isometrically in the raised position. For vertebral osteoporosis, this exercise is safe provided the range of movement is not forced and no tension is created in the neck.

3. Sitting Side Stretch

Seated sideways on the carriage, with the arm extended on the straps, you perform a lateral lengthening of the trunk. This movement works the lateral trunk muscles (quadratus lumborum, obliques) without creating forward spinal flexion.

It is particularly useful for improving thoracolumbar mobility in the frontal plane and for training seated balance, both important qualities for fall prevention. The spring resistance can be adjusted to make the movement more or less demanding.

4. Standing Leg Work on the Platform

In this group of exercises, the student stands on the fixed platform of the Reformer and works postural control while moving the legs with the straps. The standing position loads the axial skeleton and the lower limbs, stimulating bone formation in the hip and lumbar spine.

The level of proprioceptive challenge can be graded: with both hands on the supports for greater safety, or progressing to versions without hand support for a greater balance challenge. This kind of work is especially relevant for fall prevention.

5. Hip Extension on All Fours

On all fours on the carriage (hands on the stable platform or on the strap bar), you extend one leg backwards against the spring resistance. This exercise specifically strengthens the hip extensors (glutes), in a position that unloads the spine.

Strong hip extensors are one of the most important protective factors against hip fracture in the event of a fall: a strong glute can stop or correct a stumble before it becomes a fall. In addition, the hip extension position acts on the proximal femur, precisely the most vulnerable point in people with osteoporosis.

6. Seated Arm Work with Light Springs

Seated on the carriage with the spine neutral, you work the muscles of the shoulder girdle and the arms with the Reformer straps. Pilates arm exercises (Hug a Tree, Biceps Curl, modified Rowing without spinal flexion) generate mechanical load on the radius and ulna (two of the bones most frequently fractured in osteoporosis) and on the humerus.

In the version adapted for osteoporosis, the forward trunk-flexion phases that accompany some classic rowing exercises are removed. The trunk stays upright or in slight extension throughout the movement.

What the Scientific Evidence Says

Research on Pilates and bone density has advanced considerably in the past decade. These are the most relevant studies:

Oliveira et al. (2015), published in the Journal of Bone and Mineral Research. A randomised controlled trial with 70 postmenopausal women that compared a 6-month Pilates programme with a sedentary control group. The Pilates group showed significant improvements in bone mineral density of the femur and lumbar spine, with a mean difference of 0.8% in the total femur compared with the control group. The authors concluded that Pilates can be an effective intervention for slowing bone loss in postmenopausal women.

Hodges et al. (2013), published in Osteoporosis International. It reviewed the available evidence on resistance exercise and bone density in women with osteoporosis and osteopenia. Progressive resistance exercise showed consistent positive effects on bone mineral density in the lumbar spine and femoral neck, with greater magnitude when the load was specific to those regions. This principle of load specificity is the basis for designing adapted Reformer programmes for osteoporosis.

Marinda et al. (2013), published in the African Journal for Physical Health Education, Recreation and Dance. It studied 50 women aged 65 to 75 divided into a Pilates group and a control group for 10 weeks. The Pilates group showed significant improvements in dynamic balance and lower-body muscle strength, both factors directly related to fall prevention.

Vieira et al. (2017), in Archives of Osteoporosis. A meta-analysis that assessed the effect of physical exercise on bone density in postmenopausal women. Progressive resistance exercises obtained the best results on bone density of the lumbar spine (mean effect 0.91%) and femoral neck (0.64%), higher than those obtained with unloaded aerobic exercise.

The evidence is clear: progressive resistance exercise, applied in a controlled, adapted way, is an effective intervention for slowing bone loss and reducing fall risk. Reformer Pilates combines both characteristics when the programme is well designed.

Reformer Pilates for Osteoporosis at 50 and Beyond

Fear of movement is one of the main obstacles stopping people with osteoporosis from exercising. The diagnosis, together with warnings not to fall and to be careful, can lead to a cycle of inactivity that worsens bone loss and increases the long-term risk of fracture.

Reformer Pilates, practised in a supervised setting with an adapted programme, offers a way out of that cycle. It does not require running, jumping or lifting free weights. It requires control, breathing and progressive movement, elements that can be worked safely even with established osteoporosis.

If you are over 50 and wondering whether the Reformer is right for you, the article on Reformer Pilates for the over-50s and the one on the first Reformer Pilates class in Madrid will give you a complete view of the adaptation process.

Pilates with Osteoporosis at Pinar Pilates

At Pinar Pilates we have instructors trained in adapting Reformer Pilates for specific health conditions. Our small groups (8 people maximum per class) allow your instructor to know your history, adapt every exercise to your needs and correct in real time any movement pattern that is not appropriate for your situation.

More than 490 people have rated their experience at Pinar Pilates on Google, with an average of 4.9 out of 5.

Before your first class, we ask that you tell us about your diagnosis of osteoporosis or osteopenia and, if possible, bring the report from your latest densitometry. It is not compulsory, but it is the information that lets us look after you better from day one.

Frequently Asked Questions about Pilates and Osteoporosis

Can I do Pilates if I have severe osteoporosis?

Severe osteoporosis (T-score below -3.5 or a previous fragility vertebral fracture) requires strict adaptation of the programme. Not all Reformer exercises are safe in these cases. However, an individual assessment can identify a set of safe, beneficial exercises. You need your doctor’s approval before starting and must tell the instructor your full diagnosis, including any previous fractures.

How long does Pilates take to improve bone density?

The available studies show measurable changes in bone mineral density from 3 to 6 months of regular practice (2 to 3 sessions a week). However, the effect of exercise on bone is cumulative and continuous: the best results come with long-term adherence. Beyond bone density, the benefits for balance, muscle strength and confidence in movement are evident within a few weeks.

Does Pilates replace osteoporosis medication?

No. Physical exercise is an essential component of osteoporosis treatment, but it complements medication (bisphosphonates, denosumab, hormone therapy, etc.), it does not replace it. Decisions about drug treatment rest with your doctor. Pilates enhances the effects of medical treatment by adding mechanical stimulus to the bone, but it does not replace any component of the protocol prescribed by your specialist.

What is the difference between Pilates for osteoporosis and a normal Pilates class?

In a standard Pilates class, instructors include spinal flexion exercises (Roll Up, Hundred, classic Stomach Massage) that are not appropriate for people with osteoporosis. An adapted programme removes these movements and replaces them with extension work, standing work and strengthening of the hip and spinal extensors. In addition, the load progresses more gradually and special attention is paid to postural control and balance. It is essential that the instructor knows about your diagnosis before the first class.

Can I start Reformer Pilates if I have never exercised?

Yes. The Reformer is equipment designed to adapt to every level of fitness. For people with osteoporosis and no previous experience, the starting point is an initial assessment that identifies the person’s capacity, limitations and goals. The first sessions focus on learning the basic mechanics of the Reformer and the breathing patterns before adding load and complexity.

A diagnosis of osteoporosis or osteopenia is not the end of exercise: it is the beginning of a different, more conscious and more adapted kind of exercise. If you want to practise Reformer Pilates safely, in a setting where the group size allows the individual attention your situation requires, at Pinar Pilates we can help you.

Our studio is at Calle del Pinar 8, 28006 Madrid (Salamanca district). You can contact us on +34 611 994 729 or book directly online. The first class is 50% off so you can check with no commitment whether our method is right for you.

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