Details
| Original language | English |
|---|---|
| Pages (from-to) | 313-319 |
| Number of pages | 7 |
| Journal | MOTOR CONTROL |
| Volume | 17 |
| Issue number | 3 |
| Publication status | Published - Jul 2013 |
| Externally published | Yes |
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.
Keywords
- Aging, Kinesiology, Motion analysis, Motor behavior, Motor control, Older adults
ASJC Scopus subject areas
- Health Professions(all)
- Physical Therapy, Sports Therapy and Rehabilitation
- Medicine(all)
- Clinical Neurology
- Medicine(all)
- Physiology (medical)
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In: MOTOR CONTROL, Vol. 17, No. 3, 07.2013, p. 313-319.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Age-related differences in the stabilization of important task variables in reaching movements
AU - Krüger, Melanie
AU - Eggert, Thomas
AU - Straube, Andreas
PY - 2013/7
Y1 - 2013/7
N2 - 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.
AB - 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.
KW - Aging
KW - Kinesiology
KW - Motion analysis
KW - Motor behavior
KW - Motor control
KW - Older adults
UR - http://www.scopus.com/inward/record.url?scp=84883609582&partnerID=8YFLogxK
U2 - 10.1123/mcj.17.3.313
DO - 10.1123/mcj.17.3.313
M3 - Article
C2 - 23761425
AN - SCOPUS:84883609582
VL - 17
SP - 313
EP - 319
JO - MOTOR CONTROL
JF - MOTOR CONTROL
SN - 1087-1640
IS - 3
ER -