Acar, EceÇankaya, TamerÖner, Serkan2021-06-232021-06-2320201063-86521543-267Xhttps://doi.org/10.1123/japa.2019-0127https://hdl.handle.net/20.500.12491/10520Trunk muscles are required for safety of movement in aging. The authors aimed to investigate the relationship between trunk muscle thickness and the static postural balance in older adults. A total of 31 females and 23 males with a mean age of 73.39 +/- 6.09 completed the study. The thickness of the trunk muscles was determined with ultrasound imaging. Postural balance was assessed with force plate. There was a positive weak correlation between right and left upper rectus abdominis muscle thickness and anterior stability area (p < .05, r> .3). The negative and moderate correlation was determined between the left lower rectus abdominis and the perturbated stability sway value (p < .01, r> .5). The increase in trunk muscle thickness in older adults increases the postural stability area and decreases the postural sway especially in the mediolateral direction.eninfo:eu-repo/semantics/closedAccessRectus AbdominisStability AreaSway AreaArticle10.1123/japa.2019-0127282269275317222932-s2.0-85084379322Q2WOS:000540246200012Q3