Research has suggested that taking a yoga class on a weekly basis gave a similar level of relief from pain in the lower back as taking a class twice weekly, for a sample of minority patients with lower incomes.

Boston University Medical Centre reports that the findings, from researchers at its institution and the university's School of Medicine, suggest those who want to try yoga because of lower back pain might be able to benefit from going to a weekly class that's medically appropriate for them.

And it's not the first evidence that yoga can treat chronic pain in your lower back effectively.

The research appeared in Evidence-Based Complementary and Alternative Medicine and used a sample of 95 mainly low-income participants.

These people, who all had lower back pain, were split into a pair of groups, with one going to twice weekly classes and the other group going to once weekly classes.

Similar substantial improvements in pain were seen in both these groups at the end of the 12 week trial, in which both sets of participants were also encouraged to do yoga in their homes, too.

"Lower income patients often have worse lower back pain due to limited access to both mainstream health care treatments and complementary treatments such as yoga, massage and acupuncture," the lead author of the study, Robert Saper, explained.

"Given the similar improvement seen in once weekly yoga classes, and that once a week is more convenient and less expensive, we recommend patients suffering from lower back pain who want to pursue yoga attend a weekly therapeutic yoga class," he added.

No matter how often you want to go to your yoga class, if you're going to be doing yoga you'll want the right yoga equipment.

Yoga mats really are a must for the yoga fan, for example, and by choosing from the selection of yoga bags available, you'll also have something to carry your mat in.