Age-related differences in the stabilization of important task variables in reaching movements

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  • Ludwig-Maximilians-Universität München (LMU)
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Details

OriginalspracheEnglisch
Seiten (von - bis)313-319
Seitenumfang7
FachzeitschriftMOTOR CONTROL
Jahrgang17
Ausgabenummer3
PublikationsstatusVeröffentlicht - Juli 2013
Extern publiziertJa

Abstract

Empirical evidence suggests that the ability to stabilize important task variables of everyday movements by synergistically coordinating redundant degrees of freedom decreases with aging. The aim of the current study was to investigate whether this decrease may be regarded as a characteristic that also applies for the control of multiple task variables. We asked younger and older subjects to repeatedly reach towards and grasp a handle, while joint angle movement of the arm was recorded. The handle constrained final hand position and final hand orientation. Movement variability was analyzed during movement execution by using the uncontrolled manifold method. Results showed that hand orientation was less stabilized in younger than in older subjects. We conclude that aging changes the stability of important task variables. These changes may lead to decreased stability in some task variables, as reported in the literature, but also to increased stability in other task variables.

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Age-related differences in the stabilization of important task variables in reaching movements. / Krüger, Melanie; Eggert, Thomas; Straube, Andreas.
in: MOTOR CONTROL, Jahrgang 17, Nr. 3, 07.2013, S. 313-319.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Krüger M, Eggert T, Straube A. Age-related differences in the stabilization of important task variables in reaching movements. MOTOR CONTROL. 2013 Jul;17(3):313-319. doi: 10.1123/mcj.17.3.313, 10.1123/mc.2014-0005
Krüger, Melanie ; Eggert, Thomas ; Straube, Andreas. / Age-related differences in the stabilization of important task variables in reaching movements. in: MOTOR CONTROL. 2013 ; Jahrgang 17, Nr. 3. S. 313-319.
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