Publications by authors named "Maike Visschedijk"

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Catch the ruler: concurrent validity and test-retest reliability of the ReacStick measures of reaction time and inhibitory executive function in older people.

Aging Clin Exp Res 2019 Aug 9;31(8):1147-1154. Epub 2018 Oct 9.

Neuroscience Research Australia, University of New South Wales, Sydney, Australia.

Background: Reduced cognitive function, particularly executive function (EF), is associated with an increased risk of falling in older people. We evaluated the utility of the ReacStick test, a clinical test of reaction time, and inhibitory EF developed, for young athletes, for fall-risk assessment in older people.

Aims: To evaluate the psychometric properties of ReacStick measures of reaction time and executive functioning in healthy community-dwelling older people.

Methods: 140 participants (aged 77 ± 5 years) underwent testing. Two test conditions-simple and inhibitory go/no-go-provided measures of reaction time, recognition load (difference in reaction time between conditions), and go/no-go accuracy. Concurrent validity was evaluated against the conventional tests of reaction time and EF (simple hand reaction time, trail-making test, and Stroop colour test). Discriminant ability was determined for fall-risk factors (age, gender, physiological profile assessment, and fall history). Test-retest reliability after 1 week was evaluated in 30 participants.

Results: ReacStick reaction time correlated with tests of reaction time and EF, recognition load correlated with inhibitory EF, and go accuracy correlated with reaction time and inhibitory EF. No-go accuracy was not significantly correlated with any of the reaction time and EF tests. Test-retest reliability was good-to-excellent (ICC > 0.6) for all the outcomes. ReacStick reaction time discriminated between groups based on age, recognition load between genders, and no-go accuracy between retrospective fallers and non-fallers.

Discussion: An unavoidable time pressure may result in complementary information to the traditional measures.

Conclusions: The ReacStick is a reliable test of reaction time and inhibitory EF in older people and could have value for fall-risk assessment.
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August 2019