Back pain is one of the top reasons that people begin to lose mobility in middle age. Pain can keep people from engaging in physical activity, making it more difficult for them to maintain a healthy weight and keep up their strength, stamina, and balance as they age. So treating and managing back pain that results from injuries or health problems is crucial for staying on the path of a healthy and active life.

Considering that most people spend roughly a third of their lives lying in bed, choosing the right mattress is essential for managing low back pain. It can make the difference in whether you can sleep at night and function the next day.

In the past, doctors often recommended very firm mattresses. But one study, based on a waiting-room survey of 268 people with low back pain, found that those who slept on orthopedic (very hard) mattresses had the poorest sleep quality. There was no difference in sleep quality between those who used medium-firm and firm mattresses.

Soft mattresses, on the other hand, can also be problematic. While a soft mattress that conforms to your body's natural curves may help the joints align favorably, you might also sink in so deeply that your joints twist and become painful during the night.

If you want to find out whether a firmer mattress would feel better than the one you're currently using, try putting a plywood board under your mattress to dampen the movement from the bedsprings, or try placing your mattress on the floor.

Of course, you can also go to a mattress showroom and test a variety of models. But keep in mind that what feels comfortable for a few minutes in a store might not translate into a good night's sleep. A more reliable test is to observe how you feel after sleeping on different types of mattresses while away from home — for example, at a hotel or a friend or relative's house.