 Group B which will include subjects without LBP, members of the research team will recruit volunteers within the DC metro area using flyers posted on campus at the George Washington University, local DC metro gymnasiums and recreational centers, word of mouth and email list serves associated with educational programs within The George Washington University School of Medicine and Health Sciences. Subjects will be screened by phone for the presence or history of low back pain as well as other exclusion criteria. If the subject agrees to move forward with participation they will be asked to come to The George Washington University Program in Physical Therapy located at 2000 Pennsylvania Ave Suite 2000, NW Washington DC 20006, or International Spine Pain Performance Center or Synergy Manual Physical Therapy. Enrollment and baseline visits can occur at the same time. During enrollment each subject will privately be briefed on the purpose and involvement in the study and be allowed to ask questions and opt out if not interested. Informed consent will be reviewed and signed and each subject will be given a copy of the consent form 15 minutes. Baseline data will then be collected which will include: subject demographicsmedical history age, gender, BMI, employment, marital status, comorbidities, co-interventions and QVAS for back and leg, EQ-5D, DASS-21 10 minutes and ViMove standard assessment, 30 sec chair test, and 40m walk test 25 minutes. See Appendix C. 