The Journal of Korean Physical Therapy

  • 제33권6호
  • /
  • Pages.265-271
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  • 2021
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  • 1229-0475(pISSN)
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  • 2287-156X(eISSN)
대한물리치료학회 (The Korean Society of Physical Therapy)
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Choice Stepping Reaction Time under Unstable Conditions in Healthy Young and Older Adults: A Reliability and Comparison Study

  • Lim, Ji Young (Department of Physical Therapy, Graduate School of Medical Sciences, Konyang University) ;
  • Lee, Seong Joo (Department of Physical Therapy, Graduate School of Medical Sciences, Konyang University) ;
  • Park, Dae-Sung (Department of Physical Therapy, College of Medical Science, Konyang University)
  • 투고 : 2021.11.16
  • 심사 : 2021.12.27
  • 발행 : 2021.12.31
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초록

Purpose: We aimed to analyze the reliability of the test for choice stepping reaction time (CSRT) under an unstable surface and determine whether there were differences in CSRT between support surface conditions (stable vs. unstable conditions) and between age groups (young adults vs. community-dwelling older adults). Methods: Twenty healthy community-dwelling older adults and twenty young adults performed the stepping task under an unstable condition over two visits. The mean of the two trials measured for each visit was used for the analysis. The test-retest reliability was analyzed using intra-class correlation coefficient (ICC) with a 95% confidence interval, standard error of measurement (SEM), and minimal detectable change (MDC). Differences in CSRT between support surface conditions and age groups were analyzed using the independent t-test with Bonferroni correction. Results: Excellent consistency was observed for ICC >0.90 in both groups. Moreover, the SEM and MDC values of the CSRT in older and young adults were 0.03 and 0.09 and 0.01 and 0.04, respectively. There was a significant difference in the CSRT between the age groups under stable (p<0.001) and unstable conditions (p<0.001). Conclusion: The findings demonstrated that the test for CSRT under an unstable condition had reliable results in both groups. Although older adults demonstrated longer reaction times than younger adults in all surface conditions, increasing the balance control demand by implementing a choice stepping task concomitant with a balance task had no influence on the reaction time in both age groups.

키워드

과제정보

This research was supported by an R&D grant (No. P0003035) on the fusion and convergence of promoting regional industries by the Korea Institute for Advancement of Technology, Ministry of SMEs and Startups.

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