Kinesiology tape KT is fashionable, it seems. Gullible consumers proudly wear it as decorative ornaments to attract attention and show how very cool they are.
Am I too cynical?
But does KT really do anything more?
A new trial might tell us.
The aim of this study was to investigate whether adding kinesiology tape (KT) to spinal manipulation (SM) can provide any extra effect in athletes with chronic non-specific low back pain (CNLBP).
Forty-two athletes (21males, 21females) with CNLBP were randomized into two groups of SM (n = 21) and SM plus KT (n = 21). Pain intensity, functional disability level and trunk flexor-extensor muscles endurance were assessed by Numerical Rating Scale (NRS), Oswestry pain and disability index (ODI), McQuade test, and unsupported trunk holding test, respectively. The tests were done before and immediately, one day, one week, and one month after the interventions and compared between the two groups.
After treatments, pain intensity and disability level decreased and endurance of trunk flexor-extensor muscles increased significantly in both groups. Repeated measures analysis, however, showed that there was no significant difference between the groups in any of the evaluations.
The authors, physiotherapists from Iran, concluded that the findings of the present study showed that adding KT to SM does not appear to have a significant extra effect on pain, disability and muscle endurance in athletes with CNLBP. However, more studies are needed to examine the therapeutic effects of KT in treating these patients.
Regular readers of my blog will be able to predict what I have to say about this study design: A+B versus B is not a meaningful test of anything. I used to claim that it cannot possibly produce a negative result – and yet, here it seems to have done exactly that!
The way I see it, there are two possibilities to explain this:
- the KT has a mildly negative effect on CNLBP; thus the expected positive placebo-effect was neutralised to result in a null-effect overall;
- the study was under-powered such that the true inter-group difference could not manifest itself.
I think the second possibility is more likely, but it does really not matter at all. Because the only lesson we can learn from this trial is this: inadequate study designs will hardly ever generate anything worthwhile.
And this is, I think, a lesson that would be valuable for many researchers.
Comparing spinal manipulation with and without Kinesio Taping® in the treatment of chronic low back pain.