Influence of room lighting illuminance on postural control using an accelerometer measure among the individuals with transient ischemic attack Postural control in TIA
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Abstract
Background: Postural dysfunction among individuals with a transient ischemic attack (TIA) is inconclusive. Dim-light condition is commonly encountered in real-life situations. However, there is limited evidence on the influence of diminished room light on postural control in TIA.
Objective: To determine the influence of room lighting illuminance on postural control using the accelerometry measure under normal (NL) and diminished (DL) room light, and with the eye closed (EC) conditions in TIA.
Methods: Twelve participants with TIA and age-gender-matched controls were recruited. The accelerometer was used to quantify body sway or pelvic acceleration in anterior-posterior (AccAP) and medial-lateral (AccML), pelvic sway jerkiness (JERK), and standing time (ST). The testing tasks were standing on one leg (SOL), compensatory stepping to different directions, standing on a firm and a foam surface (Sfirm and Sfoam). Two-way mixed ANOVA with pairwise comparison was used for analysis.
Results: DL and EC affected Acc, JERK, and ST in TIA during SOL, compensatory stepping lateral (ComL), and Sfirm testing. DL significantly reduced ST, increased AccAP, AccML in SOL and Sfirm, and increased JERK in ComL when compared to NL only in TIA group. Despite room-light did not affect TIA in Sfoam, AccML in Sfoam was higher in TIA than the Con group.
Conclusion: TIA had subclinical balance dysfunction especially in DL and EC despite having no clinical impairments. This balance dysfunction was able to detect using an accelerometer. Therefore, postural assessment combined with accelerometer and light intensity adjustment are more sensitive to monitor postural control in TIA.
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References
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