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Euro Diabetes Congress 2018, Global Vaccines Congress 2018
& Food Science Conference 2018 Archives of General Internal Medicine | ISSN: 2591-7951| Volume 2
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NUTRITION, FOOD SCIENCE & TECHNOLOGY
International Conference on
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World Congress on
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Hyeo Bin Yoon et al., Arch Gen Intern Med 2018, Volume 2 | DOI: 10.4066/2591-7951-C6-018
AGE-RELATED CHANGES OF UPPER
EXTREMITY MOTOR PERFORMANCE IN
DUAL-TASK TEST
Hyeo Bin Yoon, Ji-hyun Kim, Joo-hee Park, Jun-Hyeok Lee
and Hye-seon Jeon
Yonsei University, South Korea
Elderly people experience motor performance decline associated with
cognitive deficits since aging induces degeneration of the nervous system,
such as brain atrophy and dedifferentiation during cortex recruitment. This
senescence induces a decrease in attentional resources and a slowdown
in information-processing capacity, which often lead to confusion in the
presence of a difficult and complex situation such as dual task condition.
The Fitts’ task is an appropriate tool to examine an individual’s capacity of
information processing and motor control through unimanual movement. As
the index of difficulty (ID) increases, the attentional demand also increases,
thus, performance deficits emerge. In this study, we compared the influence
of a secondary cognitive task on the performance during the Fitts’ task, at
two IDs, between young and elderly groups. Seventeen volunteers were
recruited for each group. All subjects performed a single motor task (Fitts’
task, including 2 IDs) and a dual task (the conjunction of the Fitts’ task with a
cognitive task, counting number backward) in a random order. Acceleration
data were collected during the experiment and processed using a custom-
made MATLAB. We examined movement time (MT), acceleration time (AT),
deceleration time (DT), and tapping number (TN) parameters. Two-way
mixed ANOVA was used to test for the main and interaction effects of age
and difficulty for each task. Two-way repeated measures ANOVA was used
to test for the main and interaction effects of task and difficulty within each
age group.
No interaction effects between age and difficulty or between task and
difficulty were identified; therefore, we analyzed data with independent and
paired t-test. The results showed that MT, AT, and DTwere significantly longer,
and TN was significantly lower in the elderly group, difficult ID, and dual task
conditions. Altogether, elderly people are more vulnerable to difficulty and
dual task interference than young individuals.
Hyeo Bin Yoon is a Msc student in the department of
physical therapy at the Graduate School of Yonsei Uni-
versity. She received BSc degree in physical therapy
from Yonsei University. Her main research interests
are gait analysis in patients with neurological impair-
ments, physical therapy for geriatrics and motor con-
trol involving nervous system.
BIOGRAPHY