Clinical trials measure the effects (therapeutic and/or side effects) of an intervention such as Alexander technique1. Up to date lists of clinical trials can be fairly easily found using search engines such as Google Scholar or PubMed. The two links below give the results for the keyword combination: “‘Alexander technique’ clinical” (other keyword combinations are also possible of course):
A systematic review2 published in the International Journal of Clinical Practice in 2012 of clinical trials concludes the following:
Strong evidence exists for the effectiveness of Alexander Technique lessons for chronic back pain and moderate evidence in Parkinson’s-associated disability. Preliminary evidence suggests that Alexander Technique lessons may lead to improvements in balance skills in the elderly, in general chronic pain, posture, respiratory function and stuttering, but there is insufficient evidence to support recommendations in these areas.
This review mentions in particular two randomized control trials. The first, published in the British Journal of Medicine3 on the effect of lessons on back pain, studied 579 patients split into three randomized groups. It concludes:
One to one lessons in the Alexander technique from registered teachers have long term benefits for patients with chronic back pain.
The second, published in Clinical Rehabilitation4, studied the effects of as series of lessons on 93 patients with Parkinsons disease split into three groups concludes:
There is evidence that lessons in the Alexander Technique are likely to lead to sustained benefit for people with Parkinson’s disease.
In 2015 one notable clinical trial demonstrated the effectiveness of AT on reducing both chronic neck pain and the use of painkillers for neck pain5.
A full list of published research with short summaries is also given on the STAT and AmSAT Alexander technique sites:
The “Health effects” section of the wikipedia article on Alexander technique6 has a good concise description of clinical research including references to overviews by insurance and government bodies.
To summarize, the current clinical research on Alexander technique has yielded some positive results, including one particularly strong study of chronic lower back pain. However much more research needs to be done before AT can be proven to be therapeutic for wide range of problems.