The more trials pile up on strength training for fibromyalgia, the smaller the effect

If you live with fibromyalgia, you have almost certainly been told to exercise. It is the one recommendation nearly every guideline agrees on. A review published in early August put a number on how much that advice actually buys, and the number is a good deal smaller than the one the same field reported thirteen years ago.

The review appeared in the Annals of Physical and Rehabilitation Medicine and pooled 14 randomized trials covering 871 participants, all of them women (Annals of Physical and Rehabilitation Medicine, 2026). Its question was not whether resistance training belongs in the care of fibromyalgia and widespread sensitivity, which guidelines settled years ago, but what dose the evidence actually supports.

Two numbers came out of it. Pain intensity fell by 0.83 points more in the exercise groups than in the comparison groups, with a confidence interval running from 1.50 down to 0.19. Disease impact, measured on the Fibromyalgia Impact Questionnaire, fell by 8.78 points on a 100 point scale. Both results were statistically significant. Sit with the pain figure for a moment. On a ten point scale the average person moved less than a single point, and the least favorable end of the plausible range was under a fifth of a point.

The dose findings pointed one way. Programs run two to three times a week, progressive, using free weights or machines or elastic bands, were where the clinically relevant changes showed up. The meta regression suggested that higher intensity, greater weekly volume, and roughly twelve weeks of it were associated with the larger improvements. More seemed to be better, right up until the authors' own closing sentence, which asked for programs to be individualized around personal preference in order to protect long term adherence.

The line this study sits on

Here is what makes this worth more than a headline. In 2013 the Cochrane Collaboration published its review of resistance training for fibromyalgia. It found five trials and 219 women, 95 of whom actually did the training (Cochrane Database of Systematic Reviews, 2013). Against a control group, pain fell by 3.3 points on a ten centimetre scale, and the Fibromyalgia Impact Questionnaire fell by 16.75 points on the same 100 point scale the new review uses. The Cochrane authors rated their own evidence low quality and said so plainly.

Set the two side by side. Between 2013 and 2026 the trial count went from five to fourteen and the participant count from 219 to 871. Over that same stretch the pain effect shrank from 3.3 points to 0.83, and the impact score effect roughly halved, from 16.75 to 8.78.

That pattern is not a failure. It is what tends to happen when a field grows up. Small early trials report the largest effects, and as more and better trials arrive the pooled estimate settles toward something more modest and more trustworthy. What has held steady across thirteen years is the direction. Resistance training is associated with less pain and less symptom burden in fibromyalgia. The size of that association is simply a fraction of what the first look suggested.

The wider context matters too. In 2017 EULAR reviewed everything on offer for fibromyalgia and gave exercise the only strong recommendation in the entire document, with every drug and every psychological therapy rated more weakly (Annals of the Rheumatic Diseases, 2017). That is still the case. It also means the strongest tool in the box moves an average pain score by under a point, which tells you something honest about how stubborn this condition is.

The finding that survives every review

There is one result that has appeared at the end of nearly every one of these papers for over a decade, and it never becomes the headline. It is adherence. The 2026 authors close on it directly: individualize the program, emphasize personal preferences, protect long term participation.

That is the part I recognize from the people I work with. Someone with fibromyalgia rarely stalls because they chose the wrong number of sets. They stop because a week of feeling wrecked after a session teaches the body that effort carries a price, and the program quietly ends in February. The meta regression that says push harder and the closing sentence that says protect adherence are describing a real tension, not an oversight. On paper the higher dose looks better. In a life, the dose you can return to next Tuesday is the one that counts.

What I would take from thirteen years of this

Not that strength work is a waste of time. The direction of the evidence is consistent and it points toward doing some. What I would take is a different attitude toward the space between sessions.

Gentle awareness work runs on a different mechanism from loading. It is not building tissue capacity, and it does not pretend to. It changes how much effort you recruit to do an ordinary thing, and how safe a movement feels while you are doing it. Awareness Through Movement® lessons, the slow and attentive practice the Feldenkrais Method® is built on, work at exactly that level: small ranges, no strain, attention on how a movement organizes itself rather than on how much of it you can produce. In a body that has learned to brace against its own effort, that matters, because the bracing is part of what makes a strength session feel so expensive. None of this replaces clinical care. It sits alongside whatever your physiotherapist has given you rather than in place of it.

The daily rituals inside the Feldy online movement program are built for that in between space, a few minutes of easy floor movement on the days when a full session is not on the table. You only go where the movement feels easy, pleasant, and comfortable. On a fibromyalgia week, that is not a nicety. It is the difference between a practice you keep and one you abandon in the third week.

Thirteen years of trials have narrowed the claim without changing the direction. Resistance training may help, modestly, in a condition where nothing helps dramatically, and the variable that keeps surfacing at the foot of every paper is whether you are still doing it in six months. Fibromyalgia does not usually take away your capacity to move. It takes away your confidence that moving will be worth what it costs. Rebuilding that confidence is slower work than a twelve week program, and it may well be the work that makes the twelve week program possible.