"Yoga can help relieve the agony of back pain, a major review of medical evidence found," the Daily Mail reports.
The review concluded there is evidence yoga may help improve function and relieve pain associated with chronic lower back pain in some people.
The review looked at 12 studies that compared the effects of yoga with other treatments, such as physiotherapy, as well as no treatment.
Researchers found yoga had some benefit for people with lower back pain compared with people who did no exercise for their back.
The results were less convincing for those who were already engaged in some other form of exercise.
Yoga includes the integration of physical poses and controlled breathing, sometimes also with meditation.
The results also demonstrated that a minority of participants had worse back pain after following a yoga regime, but the authors suggest this may be the same for any exercise.
The researchers cautioned that all of the results could have been affected by bias as it was impossible to blind the effects of yoga from the participants. This means a possible placebo effect could have been at play.
There are currently a number of recommended treatments for long-term back pain, including painkillers, exercise classes, physiotherapy or cognitive behavioural therapy (CBT). Talk to your GP about the best option for you.
What is important is to keep active as much as possible. It's now recognised that people who remain active are likely to recover from their pain more quickly.
The study was carried out by researchers from the University of Maryland School of Medicine in the US, the University Hospital of Cologne in Germany, the University of Portsmouth in the UK, and Yoga Sangeeta in the US.
It was supported by the National Institutes of Health National Center for Complementary and Integrative Medicine in the US. The authors declared no conflict of interest.
The UK reporting of the review was much more enthusiastic than the Cochrane researchers, who are known to err on the side of caution.
The Daily Telegraph excitedly reported that, "people who could most benefit from adopting the lotus position while locating their spiritual core are in fact those immobilised by pain".
But the reviewers actually concluded that, "There is low- to moderate-certainty evidence that yoga compared to non-exercise controls results in small to moderate improvements in back-related function at three and six months. Yoga may also be slightly more effective for pain at three and six months."
This systematic review assessed the evidence of the effects of yoga for treating chronic non-specific lower back pain, compared with no specific treatment, minimal intervention (such as education) or another active treatment.
The outcomes focused on pain, back function, quality of life and adverse events. The studies included were all randomised controlled trials (RCTs)
RCTs are one of the best ways of looking at the effect of an intervention – in this case, the effect of yoga for treating chronic non-specific lower back pain.
However, while a systematic review is useful in bringing together the evidence on a specific topic, it can only ever be as good as the studies included. Any shortfalls of the studies included will be brought forward into the systematic review.
Researchers carried out a systematic review of RCTs including adults (aged 18 or older) with current chronic non-specific lower back pain for three months or more.
Twelve studies were included, involving a total of 1,080 participants from the US, India and the UK, mostly aged between 43 and 48 years old.
Researchers included studies with yoga as an intervention for lower back pain. Yoga classes included exercises specifically for lower back pain and were carried out by experienced practitioners.
The researchers compared:
Outcome measures were looked at in the short term (around four weeks), short to intermediate term (around three months), intermediate term (around six months) and long term (around one year).
Outcomes analysed included back-specific functional status (measured by a questionnaire), pain (measured by self-assessment on a scale), and measures of quality of life, clinical improvement, work disability and adverse events.
For yoga compared with no-exercise, there was:
There were no clinically significant differences in pain at three to four months, six months or 12 months for yoga compared with no exercise.
For yoga compared with non-yoga exercise controls, there was:
For yoga added to exercise compared with exercise alone, there was little or no difference in back-related function or pain, and no information on adverse events.
The authors concluded that, "There is low- to moderate-certainty evidence that yoga compared to non-exercise controls results in small to moderate improvements in back-related function at three and six months."
They added: "It is uncertain whether there is any difference between yoga and other exercise for back-related function or pain, or whether yoga added to exercise is more effective than exercise alone.
"Yoga is associated with more adverse events than non-exercise controls, but may have the same risk of adverse events as other back-focused exercise. Yoga is not associated with serious adverse events."
There was some evidence people doing yoga – compared with those doing no exercise – saw some improvement in back-related function at three and six months.
It was not clear if those undertaking yoga, compared with other exercise or adding yoga to exercise, was any better than exercise alone.
The study does, however, have some downfalls:
When it comes to lower back pain, it is important to stay as mobile as possible – yoga could be one of a range of possibly beneficial exercise-based treatments for back pain.
Read more about taking care of back pain.