Age Effects on Upper Limb Kinematics Assessed by the Reaplan Robot in Healthy Subjects Aged from 3 to 93 Years Old

Gilliaux, Maxime;Lejeune, Thierry;Sapin, Julien;Dehez, Bruno;Detrembleur, Christine;et.al.
(2015) The 9th World Congress of International Society of Physical and Rehabilitation Medicine — Location: Berlin, Germany (19.June.2015)

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Abstract
Introduction/Background: Kinematics is recommended for the quantitative assessment of upper limb movements. The aims of this study were to determine the age effects on upper limb kinematics and establish reference standards in healthy subjects. Materials and Methods: Three hundred and seventy healthy subjects, aged from 3 to 93 years, participated to the study. Twenty-eight kinematic indices were computed from two unidirectional (i.e., reaching a target and performing a back-and-forth movement) and two geometrical (i.e., drawing a circle and a square) tasks (1). Each task was performed ten consecutive times with the REAplan, a distal effector robotic device that allows upper limb displacements in the horizontal plane. Results: For both unidirectional tasks, the speed index showed an increase during childhood, a maturation in young adults and a decrease in the elderly. Moreover, for the back-and-forth movements, the smoothness results were more reproducible during the ten cycles of movements in young adults than in children and old subjects. Finally, the accuracy and straightness indices did not show any age effect for both unidirectional tasks. For both geometrical tasks, the speed index showed a decrease along the whole life and the smoothness index showed an improvement during childhood, a maturation in young adults and a deterioration in the elderly. Finally, the accuracy index did not show any age effect for both geometrical tasks. Conclusion: This study was the first to use a robotic device to assess the age effects on upper limb kinematics and establish reference standards in subjects aged from 3 to 93 years.
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Gilliaux, M., Lejeune, T., Sapin, J., Dehez, B., Stoquart, G., & Detrembleur, C. (2015). Age Effects on Upper Limb Kinematics Assessed by the Reaplan Robot in Healthy Subjects Aged from 3 to 93 Years Old. Journal of Rehabilitation Medicine. Supplement, 54s, 73. https://hdl.handle.net/2078.5/50275 (Original work published 2015)