Abstract
Purpose：The purpose of this study was to categorize young adults into skilled and unskilled groups for dual-task （DT） performance using the Walking stroop carpet （WSC） and the 4-color stepping ladder task, and to examine the factors influencing DT performance related to physical function, sleep, and working memory. Methods：Participants performed DT walking using the WSC and the 4-color stepping ladder task. Subsequently, physical function tests, questionnaires, and working memory tests were randomly administered. Results：In the unskilled group, WSC performance showed significantly lower values in the sitto-stand test, and a significant negative correlation was observed between the sit-to-stand test and the Symbol Digit Modalities Test （SDMT）. In the 4-color stepping ladder task, the unskilled group showed significantly lower values in the sit-to-stand test and Ten Step Test （TST）, with a negative correlation between the sit-to-stand test and SDMT, and a positive correlation between the sit-to-stand test and TST. Conclusions：The sit-to-stand test, TST, and SDMT were found to be related to dual-task performance in young adults. The 4-color stepping ladder task may be more influenced by agility than the WSC.
