Can a chiropractor treat low back stiffness?

Not really: Chiropractors operate under a long discredited and disproven theory of illness involving so called 'subluxations' of the spine - something never seen by actual spine radiologists. They offer a deep massage which can sometimes offer temporary comfort but cannot diagnose or cure back disease or disease in any other part of the body.

Low back pain: I grew up in a chiropractic family. My first option for addressing low back pain is always chiropractic or osteopathic manipulation. You can also try massage therapy or working with a trainer to teach you stretches for your back and hamstrings.