Motor–cognitive interactions in older adults: reliability and comparison of Trail Walking and Stepping Trail Making Tests
摘要
Integrated motor–cognitive assessments, such as the Stepping Trail Making Test (S-TMT) and Trail Walking Test (TWT), have shown promise in predicting fall risk and assessing cognitive function. However, their reliability and validity need clarification in European populations.
MethodsThis intra-rater test–retest reliability study involved community-dwelling older adults aged 65+. Participants completed both the S-TMT and the TWT across two sessions, 1 week apart, to assess reliability and correlation. The S-TMT required participants to step on numbered squares in sequence on a 1 × 1 meter mat, while the TWT involved walking through a randomized sequence of 15 numbered flags within a 5 × 5 meter area. Test–retest reliability was evaluated using intraclass correlation coefficients (ICC), and correlations were assessed using Pearson correlation.
ResultsWe included 34 participants (mean age 74.9, 23 female). Both tests demonstrated good-to-excellent reliability: the S-TMT showed an ICC of 0.81 to 0.93, while the TWT showed an ICC of 0.83 to 0.97 based on number of trials. The S-TMT exhibited significant learning effects between sessions, whereas the TWT showed minimal learning effects. A moderate correlation (r = 0.48) was found between the tests, indicating they assess different aspects of motor–cognitive function.
ConclusionThe S-TMT and TWT are reliable and complimentary tools for assessing motor–cognitive interactions in older adults. The S-TMT is suitable for single assessment as learning effects limits short-time re-testing, whereas the TWT seems more appropriate for repeated testing. Further studies should validate these results across diverse populations and explore their predictive value for long-term outcomes.