Inclusion Criteria:  Age >65 and <80 years patients with present and known history of non-specific chronic low back pain (CLBP) will be included in the active group participants without CLBP will be included in the control group ability to comprehend or understand commands in English language  Exclusion Criteria:  Presence of any unstable cardio-respiratory comorbidity such as congestive heart failure, severe coronary disease, severe chronic obstructive pulmonary disease, or asthma needing daily treatment with puffers known history of neurocognitive impairment known history of untreated or uncontrolled psychological disorders history of previous back surgery presence of moderate to severe knee, ankle, or foot pain, and other physical impairments needing walking assistance participants expected to receive a new medication treatment or injection for their CLBP during the study week