It is not all about strength: rethinking mechanistic assumptions in exercise-based rehabilitation for musculoskeletal pain relief
No abstract. Pay-walled. See below.
No abstract. Pay-walled. See below.
(Thread on the meta-analysis here: https://www.s4me.info/threads/mecha...ipd-mediation-study-2023-runhaar-et-al.49686/).A recent meta-analysis, which pooled results from 12 studies, did indeed find that exercise reduced pain and improved physical function in people with knee osteoarthritis. But the benefits didn’t depend on how much stronger the patients got. In fact, increased strength explained just two per cent of the observed improvements.
“It’s not nothing,” says Jared Powell, a physiotherapist at Bond University in Australia and the lead author of the new study, “but it certainly doesn’t seem to be the dominant mechanism of improvement.”
A well-planned and gradual exercise routine might also help people lose the fear of movement – what clinicians call kinesiophobia – which can set in after a prolonged period of pain or injury. And it can reduce pain catastrophizing, which is the fear that minor discomfort will inevitably spiral into more serious pain if you keep moving the affected joint or limb.
These latter explanations are harder to measure or quantify, but they reflect a growing belief among doctors and scientists that our experiences of pain depend not just on signals generated by our bodies, but also on how those signals are interpreted in our brains. And they suggest that the exact details of the rehab program you follow may not be as important as previously thought.
“The context in which exercise is delivered is probably just as important as the exercise itself,” Powell says. “A clinician who builds trust, validates the patient’s experience, and helps them reconnect with activities they value is probably doing more than any particular set-and-rep scheme.”
This last one is the crux of it: "you might not see any benefits, but there are benefits, they are subjective, you just can't perceive them, and we can't observe them, or measure them, or even assess them, but we believe in them and so must you".But acknowledging that building strength isn’t the only goal of a rehab program has a crucial benefit: It means that your pain might improve even if you don’t seem to be getting stronger as quickly as you hoped. And it gives you some flexibility to tailor your exercise program to your own interests and goals.