The reliability of postural balance measures in single and dual tasking in elderly fallers and non-fallers

被引:97
作者
Swanenburg, Jaap [1 ,2 ]
de Bruin, Eling D. [1 ,2 ,3 ]
Favero, Kathrin [3 ]
Uebelhart, Daniel [1 ,2 ,4 ]
Mulder, Theo [5 ,6 ]
机构
[1] Univ Zurich Hosp, Dept Rheumatol, CH-8091 Zurich, Switzerland
[2] Univ Zurich Hosp, Inst Med Phys, CH-8091 Zurich, Switzerland
[3] ETH, Inst Human Movement Sci & Sport, Zurich, Switzerland
[4] Univ Zurich Hosp, Ctr Osteoporosis, CH-8091 Zurich, Switzerland
[5] Royal Netherlands Acad Arts & Sci, Amsterdam, Netherlands
[6] Univ Groningen, Univ Med Ctr Groningen, Ctr Human Movement Sci, NL-9713 AV Groningen, Netherlands
关键词
D O I
10.1186/1471-2474-9-162
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Background: The purpose of this study was to determine the reliability of a forceplate postural balance protocol in a group of elderly fallers and non-fallers. The measurements were tested in single and dual-task conditions, with and without vision. Methods: 37 elderly (mean age 73 +/- 6 years) community-dwellers were included in this study. All were tested in a single (two-legged stance) and in a dual-task (two-legged stance while counting backwards aloud in steps of 7's) condition, with and without vision. A forceplate was used for registering postural variables: the maximal and the root-mean-square amplitude in medio-lateral (Max-ML, RMS-ML) and antero-posterior (Max-AP, RMS-AP) direction, mean velocity (MV), and the area of the 95% confidence ellipse (AoE). Reliability of the test protocol was expressed with intraclass correlation coefficients (ICC), with 95% limits of agreement (LoA), and with the smallest detectable difference (SDD). Results: The ICCs for inter-rater reliability and test-retest reliability of the balance variables were r = 0.70-0.89. For the variables Max-AP and RMS-AP the ICCs were r = 0.52-0.74. The SDD values were for variable Max-ML and Max-AP between 0.37 cm and 0.83 cm, for MV between 0.48 cm/s and 1.2 cm/s and for AoE between 1.48 cm(2) and 3.75 cm(2). The LoA analysis by Bland-Altman plots showed no systematic differences between test-retest measurements. Conclusion: The study showed good reliability results for group assessment and no systematic errors of the measurement protocol in measuring postural balance in the elderly in a single-task and dual-task condition.
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页数:10
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