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Abstract
BackgroundPostural control is a very important function in everyday life. However, assessing postural control with commonly used measurement instruments (MIs) is limited due to deficits in their psychometric properties. The Mini-Balance Evaluation Systems Test (Mini-BESTest) is a comprehensive and multidimensional MI for assessing postural control in persons with limited balance function, such as individuals after stroke. Despite the increasing use of the Mini-BESTest worldwide, no German version is available.Research questionIs the German version of the Mini-BESTest (GVMBT) comprehensible and valid for measuring postural control in individuals after stroke?MethodsThe Mini-BESTest was translated and cross-culturally adapted, following established guidelines. It was pilot-tested with ten participants. This observational measurement and validation study was conducted at one point and included 50 participants with subacute and chronic stroke (mean age: 64.58 ± 13.34 years/ 34 men/ 16 women). Convergent validity was investigated using 1) the Berg Balance Scale (BBS) and 2) the Timed “Up & Go” (TUG). The MIs were evaluated for normal distribution with the calculation of skewness, kurtosis and Q-Q-Plots. Spearman correlation coefficients and Bland Altman analysis were used to examine the relationship between the MIs. The internal consistency was assessed using Cronbach’s alpha.ResultsComprehension of the GVMBT was confirmed. The GVMBT correlated significantly with the BBS (rs = 0.93) and the TUG (rs = − 0.85). Bland Altman analysis revealed low absolute differences. The GVMBT demonstrated no significant floor or ceiling effects and showed excellent internal consistency (Cronbach’s α = 0.90).SignificanceThe GVMBT has excellent validity and internal consistency. Due to this and its specific subcategories, the GVMBT is recommended for the use in research and clinical practice. Further psychometric properties should be evaluated.
Highlights
Postural control is important in activities of daily living [1]
Participants reported the MiniBESTest as comprehensible during performance and relevant concerning their activities of daily living
Our results suggest that the comparisons of the German version of the Mini-BESTest (GVMBT) with the Berg Balance Scale (BBS) and Timed “Up & Go” (TUG) expose no significant bias, since the lines of equality were included in the limits of agreement and the mean differences were relatively low
Summary
Postural control is important in activities of daily living [1]. It involves the ability to control the position of the body for stability and orientation [2]. Postural control forms the foundation for all movements against gravity, for selective movements and for functional tasks [3]. It depends on different subsystems, which have to cooperate with each other [2]. Impaired postural control has been associated with poorer functions in activities of everyday life, reduced ambulatory capacity, an increased risk of falling, limited social participation and it is one of the most common disabilities after stroke [1, 3]. The Mini-Balance Evaluation Systems Test (Mini-BESTest) is a comprehensive and multidimensional MI for assessing postural control in persons with limited balance function, such as individuals after stroke. Research question: Is the German version of the Mini-BESTest (GVMBT) comprehensible and valid for measuring postural control in individuals after stroke?
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