Reformer Pilates is everywhere — in studios, on social media, in hotels. But does the training actually produce measurable results, or is it primarily a lifestyle trend? We have reviewed the current body of scientific research and provide an honest summary here: What is proven, how significant are the effects, and where are the limitations?
The short answer
Research shows moderate but consistent effects of Reformer Pilates on muscle strength, endurance, and psychological well-being. Pilates is no miracle cure and does not replace medical treatment — but it is a well-studied form of training, the effects of which grow with consistency and duration of training.
Reformer Pilates specifically: Strength and endurance
A recent reformer-specific randomized controlled trial from Scientific Reports (2025) examined 47 overweight women who trained on the reformer three times a week for eight weeks. Compared to the control group, there were significant improvements in:
- Upper limb strength (p < 0.001)
- Muscular endurance (p < 0.001)
The strength and endurance effects are precisely the real strength of the reformer: The spring resistance system exercises the entire body in a controlled way — an aspect that pure weight-based observations often underestimate.
Effect on psyche and well-being
The same 2025 study also tracked psychosomatic factors. In the reformer group, the recorded scores for psychological well-being (p = 0.025 and p = 0.031) improved significantly. However, no clear difference was found in the sleep quality index (p = 0.055) — this too is part of an honest presentation.
Also in older age: Strength and mobility
Exercise training is effective not only for younger people. A randomized controlled trial from the Journal of Strength and Conditioning Research (2022) with 109 women aged 60 and older found significant improvements after a 12-week Pilates program in:
- Handgrip strength (effect size Cohen's d = 0.52 between groups)
- Gait speed (Cohen's d = 0.87 — a significant effect)
- BMI, which decreased only in the Pilates group
Gait speed and strength are important factors for independence in everyday life in old age — reformer training can be a well-controllable building block here.
How do we interpret this?
Three points fairly summarize the current state of research:
- The effects are moderate. Reformer Pilates measurably changes strength and mood — but it is no substitute for a comprehensive lifestyle or medical treatment.
- The dose is decisive. Programs lasting over 10 weeks and regular training (two to three sessions per week) show clearer results than short interventions.
- Consistency beats intensity. Pilates works through controlled repetition — those who stick with it, benefit.
Note: The studies cited here examine Pilates or Reformer Pilates as a form of exercise, not a specific piece of equipment. They do not replace individual medical or therapeutic advice.
What this means for your training
If you are considering a reformer for home or the studio: The studies speak in favour of regular training. A high-quality reformer makes it easier to stay on track — precise spring resistance, smooth carriage movement, and a safe device are the basis for the exact controlled movement that the studies are about. You can find an overview of all models in the reformer overview.
Frequently asked questions
How often and for how long do I need to train to see results?
The studies mostly involved training two to three times per week for 8 to 12 weeks. The effects on strength and well-being grew with the duration of training — regularity is more important than individual intense sessions.
Is Reformer Pilates scientifically proven?
Yes, there are several randomized controlled trials and meta-analyses. They show consistent, moderate improvements in muscle strength, endurance, and psychological well-being. The effects are moderate; the training is not a miracle cure.
Is Reformer Pilates suitable for older people?
Yes. A study with women aged 60 and over found significant improvements in handgrip strength and gait speed after 12 weeks. Especially because the intensity can be finely adjusted, it is well-suited for older people — ideally with professional guidance.
→ Continue reading: Reformer Pilates: What is it actually? The beginner's guide · Buying a Pilates Reformer — the complete 2026 guide
Unsure which reformer fits your goals? We are happy to advise you — by phone or in our showroom. +43 5356 90990 · info@bodyfit-shop.at
Sources
- Gökalp M, Kirmizigil B. Effects of reformer pilates on body composition, strength, and psychosomatic factors in overweight and obese women: a randomized controlled trial. Scientific Reports, 2025. nature.com
- Wang Y et al. Pilates for Overweight or Obesity: A Meta-Analysis. Frontiers in Physiology, 2021 (11 RCTs, 393 participants). ncbi.nlm.nih.gov
- Aibar-Almazán A et al. The Influence of Pilates Exercises on Body Composition, Muscle Strength, and Gait Speed in Community-Dwelling Older Women: A Randomized Controlled Trial. Journal of Strength and Conditioning Research, 2022. pubmed.ncbi.nlm.nih.gov
