The intervention is a single session of chiropractic care for the intervention group. The session will take approximately ten minutes. The entire spine and both sacroiliac joints will be assessed for vertebral subluxation, and adjusted where deemed necessary, by a registered chiropractor. The clinical indicators that will be used to assess the function of the spine prior to and after each chiropractic adjustment session include assessing for tenderness to palpation of the relevant joints, manual