@article{ref1,
title="The effects of task prioritization on dual-tasking postural control in patients with Parkinson disease that have different postural impairments",
journal="Archives of physical medicine and rehabilitation",
year="2020",
author="Hung, Yu-Ting and Chen, Liang-Chi and Wu, Ruey-Meei and Huang, Cheng-Ya",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="OBJECTIVE: To investigate the effect of task prioritization on dual-task control in Parkinson disease (PD) associated with different postural impairments. <br><br>DESIGN: Cross-sectional study. Participants were instructed to keep two interlocking rings apart and maintain balance in a tandem stance. Attention was focused on either stance stability (posture-focus strategy) or the interlocking rings (supraposture-focus strategy). SETTING: University research laboratory. PARTICIPANTS: 15 patients with PD and less postural impairment, and 15 patients with PD and more postural impairment. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASUREMENTS: Postural sway, postural determinism (%DET), ankle co-contraction, and ring-touching time. <br><br>RESULTS: In the less-impairment group, the supraposture-focus strategy provided smaller postural sway and postural %DET compared to the posture-focus strategy. In the more-impairment group, task prioritization showed less effects on both postural sway and postural %DET. The supraposture-focus strategy led to less ankle co-contraction than the posture-focus strategy in the more-impairment group, but task prioritization did not affect ankle co-contraction in the less-impairment group. In both groups, the supraposture-focus strategy led to less ring-touching time than the posture-focus strategy. <br><br>CONCLUSIONS: The supraposture-focus strategy provided better dual-task control than the posture-focus strategy in both PD groups. In the less-impairment group, the supraposture-focus strategy enhanced postural automaticity and postural stability. In the more-impairment group, the supraposture-focus strategy reduced ankle stiffness, due to reduced muscle co-contraction.<br><br>Copyright © 2020. Published by Elsevier Inc.<p /> <p>Language: en</p>",
language="en",
issn="0003-9993",
doi="10.1016/j.apmr.2020.02.014",
url="http://dx.doi.org/10.1016/j.apmr.2020.02.014"
}