Supplemental material, sj-pdf-1-imr-10.1177_03000605221112046 for Difference in postural stability between STarT Back Tool subgroups of patients with low back pain under conditions of sensory deprivation and cognitive load by Stian Ingemann-Molden, Rogerio Pessoto Hirata, Martin Bach Jensen, Thomas Graven-Nielsen and Allan Riis in Journal of International Medical Research