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Updated: Jun 7, 2026

Using Motion Capture Technology in the Instrumented Timed Up and Go Test to Detect the Risk of Falling in Aged Adults
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Assessing Fall Risk in Older Adults: The Role of Reaction Time and Inhibitory Control Testing with ReacStick.

Pawarut Palakawong Na Ayudhya1, Chatkaew Pongmala2, James K Richardson3

  • 1Residency Training Curriculum in Rehabilitation Medicine, Department of Rehabilitation Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.

Archives of Physical Medicine and Rehabilitation
|June 5, 2026
PubMed
Summary

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This summary is machine-generated.

ReacStick parameters accurately identify older adults at risk of falls by assessing inhibitory control. Combining ReacStick with strength tests improves fall risk assessment.

Area of Science:

  • Gerontology
  • Rehabilitation Science
  • Biomedical Engineering

Background:

  • Falls in older adults are a major public health concern, leading to injury and loss of independence.
  • Accurate identification of fall risk is crucial for implementing timely interventions.
  • Current functional tests have limitations in precisely assessing underlying sensorimotor deficits contributing to falls.

Purpose of the Study:

  • To evaluate the efficacy of ReacStick parameters in differentiating between recurrent fallers and non-fallers among community-dwelling older adults.
  • To compare the diagnostic precision of ReacStick with established functional mobility and balance tests.
  • To identify specific ReacStick parameters that are most predictive of faller status.

Main Methods:

  • A cross-sectional study involving 90 age- and sex-matched community-dwelling older adults (fallers vs. non-fallers).
Keywords:
Executive ControlFallingGeriatricPsychological InhibitionReaction Time

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  • Assessment of sensorimotor functions, cognition, Timed Up and Go (TUG), Berg Balance Scale (BBS), and ReacStick parameters (Simple Reaction Time, Reaction Accuracy).
  • Receiver Operating Characteristic (ROC) curve analysis and multivariate logistic regression were used to determine discriminative ability and independent predictors of faller status.

    • Main Results:

    • Recurrent fallers exhibited significantly poorer Simple Reaction Time (SRT), OFF Accuracy, and combined All Accuracy compared to non-fallers.
    • ReacStick parameters, particularly OFF Accuracy/SRT, demonstrated high diagnostic precision (Area Under Curve = 0.79) in identifying faller status.
    • Good knee extensor strength was found to be a protective factor against falls (adjusted Odds Ratio = 0.53).

    Conclusions:

    • Diminished short latency inhibitory control, as measured by ReacStick, is a highly accurate indicator of faller status in older adults.
    • ReacStick shows promise as a sensitive tool for assessing processing speed and inhibitory control relevant to fall risk.
    • Integrating ReacStick assessments with strength evaluations can enhance the accuracy of fall risk classification in clinical settings.