Can deep breathing ease back pain? new study says maybe

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Men and women 18-70 years of age. * Chronic primary low back pain that has persisted for at least 3 months and on most days for the past 6 months. * Average pain intensity of ≥ 4/10 for the past month. * Fluent in English. * Access to internet with a valid email address. * Able to lay down and stay relatively still for one hour. Exclusion Criteria: * Leg pain, or any other chronic pain, that is greater than low back pain. * Back pain possibly due to specific conditions (e.g., cancer, infection). * Ongoing legal action or disability claim related to low back pain. * Neurological symptoms associated with low back pain, including loss of control or incontinence of bowel or bladder. * Systemic rheumatic disease/condition (e.g. rheumatoid arthritis, systemic lupus erythematosus, fibromyalgia). * Respiratory disorder (e.g., chronic obstructive pulmonary disease) or moderate to severe asthma within the past 12 months. * Activity limiting heart disease including cardiovascular or peripheral arterial disease. * Uncontrolled hypertension (i.e. SBP/DBP of \> 160/95) or orthostatic hypotension (e.g., issues with fainting). * Neurological disease (e.g. Parkinson's, multiple sclerosis, epilepsy, history of seizures) or evidence of previous brain injury, including stroke and traumatic brain injury. * Serious acute physical injuries or any surgery within the past 6 months. * Serious psychiatric disorder (e.g., schizophrenia) or mental health issues requiring hospitalization within the past 12 months or currently on anti-psychotic medications. * History of hospitalization or treatment of substance use disorder within the past 12 months. * Currently undergoing curative or palliative chemotherapy or radiation. Pregnant or plan to become pregnant during the study period. * Glaucoma or detached retina. * Current participation or participation in the past 2 months of an interventional research study. * Cognitive impairment or factors that would preclude comprehension of material and/or full participation in the study.