How Exercise and Fitness Boost Brain Tasks for Adults with Down Syndrome

A group of 37 adults with Down syndrome took part in a research project. Their average age was about 35 years. Researchers measured how much moderate‑to‑vigorous exercise they did each day using a wrist‑worn accelerometer for a full week. They also tested physical fitness with a timed‑up‑and‑go walk and a hand‑grip strength test. Cognitive ability was checked with the Flanker test (Eriksen Flanker Task).

The data showed clear links between movement and fitness. More daily exercise was tied to faster TUG times (r = ‑0.52, p < 0.001). It also matched a lower Flanker effect score (r = ‑0.32, p = 0.047). The TUG performance itself connected to better accuracy on the Flanker Task (r = ‑0.44, p = 0.006) and to a higher Flanker effect (r = 0.33, p = 0.048). In other words, better mobility seemed to help the brain focus.

When the researchers looked at whether fitness explained the link between activity and brain performance, they found a partial bridge. Higher activity led to better TUG scores (β = ‑0.48, p = 0.003). Better TUG scores, in turn, were linked to more accurate Flanker responses (β = ‑0.52, p = 0.008). This suggests that staying active improves how the body moves, and that improved movement can support sharper thinking. Both exercise and fitness appear to play roles in cognitive tasks for people with Down syndrome.

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