Adaptive force control in grasping as a function of level of developmental disability

Background  The adaptation to the task demands of grasping (grip mode and object mass) was investigated as a function of level of developmental disability. Methods  Subjects grasped objects of different grip widths and masses that were instrumented to record grip forces. Results  Proportionally, few...

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Bibliographic Details
Published in:Journal of intellectual disability research 2009-09, Vol.53 (9), p.797-806
Main Authors: Sprague, R. L., Deutsch, K. M., Newell, K. M.
Format: Article
Language:English
Subjects:
adaptation
Adult
Adult and adolescent clinical studies
Analysis of Variance
Biological and medical sciences
Comparative Analysis
Developmental Disabilities
Disability
Female
force control
Grasping
Hand Strength
Humans
Inhibition
Intellectual deficiency
Intellectual Disability - physiopathology
Male
Medical sciences
mental retardation
Motor Skills
Psychology. Psychoanalysis. Psychiatry
Psychometrics - methods
Psychomotor Skills
Psychopathology. Psychiatry
Reflexes
Severe Disabilities
Severity (of Disability)
Severity of Illness Index
Task performance
Variability
Width
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Summary:Background  The adaptation to the task demands of grasping (grip mode and object mass) was investigated as a function of level of developmental disability. Methods  Subjects grasped objects of different grip widths and masses that were instrumented to record grip forces. Results  Proportionally, fewer participants from the profound compared with moderate and severe disability groups were able to complete the prehensile tasks. Nevertheless, all participants who completed the task showed adaptive grasping behaviour in terms of level and variability of force produced. There was higher absolute and relative force variability in low mass tasks that was enhanced with greater level of developmental disability. Conclusions  The findings show task relevant adaptive grasping control with inhibition of force output at very‐low‐force conditions being the primary performance deficit of the profound disability group as a function of level of developmental disability.
ISSN:0964-2633
1365-2788
DOI:10.1111/j.1365-2788.2009.01193.x