Dataset Information

Reliability and Validity of Ratings of Perceived Difficulty During Performance of Static Standing Balance Exercises.

ABSTRACT: BACKGROUND:Standardized instruments for measuring the intensity of balance exercises in clinical environments are lacking. OBJECTIVE:The objective of this study was to develop a method for quantifying the perceived intensity of standing balance exercises. DESIGN:A test-retest study design was used, with repeated evaluations within the same visit and between visits 1 week later. METHODS:Sixty-two participants who were healthy and 18 to 85 years old (with a mean age of 55 years [SD = 20 years]; 50% women) were enrolled. On each of 2 visits, they performed 2 sets of 24 randomized static standing exercises consisting of combinations of the following factors: surface, vision, stance, and head movement. Postural sway was measured with an inertial measurement unit, and ratings of perceived difficulty (RPD) were recorded using numerical and qualitative scales. The RPD scales were validated against the quantitative sway measures using a general linear model approach. The test-retest reliability of the RPD scales was examined using a weighted kappa coefficient. RESULTS:Both RPD scales were associated with postural sway measures with correlation coefficients > 0.6 for the whole sample. The test-retest reliability of the ratings varied considerably across the different balance exercises, and the highest weighted kappa values occurred for RPD scores on the numerical scale within the second visit, as moderate agreement was achieved in 18 of the 24 exercises. LIMITATIONS:The limitations are that the RPD scales need to be validated for other types of balance exercises and in individuals with balance disorders. CONCLUSIONS:The RPD scores correlated with the magnitude of postural sway, suggesting that they can be used as a proxy measure of perceived intensity of balance exercises.

SUBMITTER: Alsubaie SF

PROVIDER: S-EPMC6821262 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Reliability and Validity of Ratings of Perceived Difficulty During Performance of Static Standing Balance Exercises.

Alsubaie Saud F SF Whitney Susan L SL Furman Joseph M JM Marchetti Gregory F GF Sienko Kathleen H KH Klatt Brooke N BN Sparto Patrick J PJ

Physical therapy 20191001 10

<h4>Background</h4>Standardized instruments for measuring the intensity of balance exercises in clinical environments are lacking.<h4>Objective</h4>The objective of this study was to develop a method for quantifying the perceived intensity of standing balance exercises.<h4>Design</h4>A test-retest study design was used, with repeated evaluations within the same visit and between visits 1 week later.<h4>Methods</h4>Sixty-two participants who were healthy and 18 to 85 years old (with a mean age of ...[more]

PMID: 31309968

Similar Datasets

Project description:System identification techniques have the potential to assess the contribution of the underlying systems involved in standing balance by applying well-known disturbances. We investigated the reliability of standing balance parameters obtained with multivariate closed loop system identification techniques.In twelve healthy elderly balance tests were performed twice a day during three days. Body sway was measured during two minutes of standing with eyes closed and the Balance test Room (BalRoom) was used to apply four disturbances simultaneously: two sensory disturbances, to the proprioceptive and the visual system, and two mechanical disturbances applied at the leg and trunk segment. Using system identification techniques, sensitivity functions of the sensory disturbances and the neuromuscular controller were estimated. Based on the generalizability theory (G theory), systematic errors and sources of variability were assessed using linear mixed models and reliability was assessed by computing indexes of dependability (ID), standard error of measurement (SEM) and minimal detectable change (MDC).A systematic error was found between the first and second trial in the sensitivity functions. No systematic error was found in the neuromuscular controller and body sway. The reliability of 15 of 25 parameters and body sway were moderate to excellent when the results of two trials on three days were averaged. To reach an excellent reliability on one day in 7 out of 25 parameters, it was predicted that at least seven trials must be averaged.This study shows that system identification techniques are a promising method to assess the underlying systems involved in standing balance in elderly. However, most of the parameters do not appear to be reliable unless a large number of trials are collected across multiple days. To reach an excellent reliability in one third of the parameters, a training session for participants is needed and at least seven trials of two minutes must be performed on one day.

Dataset Information

Reliability and Validity of Ratings of Perceived Difficulty During Performance of Static Standing Balance Exercises.

Publications

Reliability and Validity of Ratings of Perceived Difficulty During Performance of Static Standing Balance Exercises.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets