Back pain doesn't only affect adults, and this study looked at chiropractic treatments on children between 4 and 18 years old who mostly reported low-back pain due to sports injuries.  After only 7 days of treatment, 40% of these patients reported their symptoms "much improved," and this increased to 82% at 30 days and 87% at 45 days.  Clearly children can benefit from chiropractic care as well.

• Hayden JA, Mior SA, Verhoef MJ. Evaluation of chiropractic management of pediatric patients with low back pain. A no. 1:1-8, 2003.