TY - JOUR
T1 - Can the ARAT Be Used to Measure Arm Function in People with Cerebellar Ataxia?
AU - Reoli, Rachel
AU - Cherry-Allen, Kendra
AU - Therrien, Amanda
AU - Keller, Jennifer
AU - Leech, Kristan
AU - Whitt, Abigail Leddy
AU - Bastian, Amy
N1 - Funding Information:
This study was funded by a grant from the US Department of Health and Human Services, National Institutes of Health (2R01HD040289-15A1).
Publisher Copyright:
© 2020 The Author(s).
PY - 2021/2/1
Y1 - 2021/2/1
N2 - Objective: For people with ataxia, there are validated outcome measures to address body function and structure (BFS) impairments and participation; however, no outcome measure exists for upper extremity (UE) activity level in this population. The purpose of this study was to determine whether the action research arm test (ARAT), a measure of UE activity validated for other neurological conditions, might be a useful outcome measure for capturing UE activity limitations in ataxia. Methods: A total of 22 participants with ataxia were evaluated to assess construct validity of the ARAT; 19 of the participants were included in the interrater reliability assessment. Participants received a neurologic examination and completed a battery of outcome measures, including the ARAT. ARAT performance was video recorded and scored by 4 additional raters. Results: For construct validity, Spearman rho showed a significant moderate relationship between the ARAT and BSF outcome measures. A small, nonsignificant relationship was noted for the ARAT and the participation measure. For interrater reliability, Spearman rho showed a large, significant relationship among all raters for the ARAT (range =. 87-.94). High reliability was demonstrated using the intraclass correlation coefficient ([2,1] =. 97). Conclusion: The ARAT is moderately correlated with ataxia BFS outcome measures, but not with participation scores. The ARAT is a measure of UE activity, which is different from BFS and participation outcome measures. The ARAT was identified to have strong interrater reliability among raters with varying amounts of experience administering the ARAT. Thus, for the ataxic population, the ARAT may be useful for assessing UE activity limitations. Impact: Ataxia can negatively affect reaching tasks; therefore, it is important to assess UE activity level in people with ataxia. Until this study, no outcome measure had been identified for this purpose. Lay Summary: People with ataxia may have difficulty with daily tasks that require reaching. The ARAT is an outcome measure that clinicians can use to assess UE activity limitations to help design a treatment program.
AB - Objective: For people with ataxia, there are validated outcome measures to address body function and structure (BFS) impairments and participation; however, no outcome measure exists for upper extremity (UE) activity level in this population. The purpose of this study was to determine whether the action research arm test (ARAT), a measure of UE activity validated for other neurological conditions, might be a useful outcome measure for capturing UE activity limitations in ataxia. Methods: A total of 22 participants with ataxia were evaluated to assess construct validity of the ARAT; 19 of the participants were included in the interrater reliability assessment. Participants received a neurologic examination and completed a battery of outcome measures, including the ARAT. ARAT performance was video recorded and scored by 4 additional raters. Results: For construct validity, Spearman rho showed a significant moderate relationship between the ARAT and BSF outcome measures. A small, nonsignificant relationship was noted for the ARAT and the participation measure. For interrater reliability, Spearman rho showed a large, significant relationship among all raters for the ARAT (range =. 87-.94). High reliability was demonstrated using the intraclass correlation coefficient ([2,1] =. 97). Conclusion: The ARAT is moderately correlated with ataxia BFS outcome measures, but not with participation scores. The ARAT is a measure of UE activity, which is different from BFS and participation outcome measures. The ARAT was identified to have strong interrater reliability among raters with varying amounts of experience administering the ARAT. Thus, for the ataxic population, the ARAT may be useful for assessing UE activity limitations. Impact: Ataxia can negatively affect reaching tasks; therefore, it is important to assess UE activity level in people with ataxia. Until this study, no outcome measure had been identified for this purpose. Lay Summary: People with ataxia may have difficulty with daily tasks that require reaching. The ARAT is an outcome measure that clinicians can use to assess UE activity limitations to help design a treatment program.
KW - Activities of Daily Living)
KW - Ataxia
KW - International Classification of Diseases
KW - Outcome Assessment (Health Care
KW - Rehabilitation
KW - Statistics
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U2 - 10.1093/ptj/pzaa203
DO - 10.1093/ptj/pzaa203
M3 - Article
C2 - 33336704
AN - SCOPUS:85102221664
SN - 0031-9023
VL - 101
JO - Physical therapy
JF - Physical therapy
IS - 2
M1 - pzaa203
ER -