Similarities and differences between activity avoidance and somatic focus in Japanese version of the Tampa Scale for Kinesiophobia

The TSK–11, a short version of the Tampa Scale for Kinesiophobia, is commonly used to assess fear of movement and (re)injury in patients with musculoskeletal pain. The two–factor model of the TSK–11, consisting of activity avoidance (TSK–AA) and somatic focus (TSK–SF), is known for its high consistency and reliability. However, the subscales of the Japanese version of the TSK–11 have not been validated, and the differences between them are unclear. The aim of our study is to validate the TSK–J11 subscales in Japanese, investigate their associations with pain and pain–related measures, and identify differences between the subscales using data from our prior studies.