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KMID : 1137820130340040212
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의공학회지
2013 Volume.34 No. 4 p.212 ~ p.217
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Characteristics of Balance and Muscle Activation responded to Dynamic Motions in Anterior-Posterior and Medial-Lateral Directions
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Kim Choong-Yeon
Jung Ho-Hyun
Lee Bum-Kee
Jung Duk-Young
Chun Keyong-Jin
Lim Do-Hyung
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Abstract
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Falling is one of the major public problems to the elderly, resulting in limitations of daily living activities.
It can be induced by the functional loss of the balance ability and muscle strength in the elderly. It has been, however,
not well investigated to suggest an effective methodology improving the balance ability and muscle strength for the
prevention of the falling due to lack of information about the characteristics of the balance and muscle activations
responded to the dynamic motions. The aim of the current study is, therefore, to identify the characteristics of the
balance and muscle activations responded to the dynamic motions in Anterior-Posterior(AP) and Medial Lateral(ML)
directions. For that, a motion capture system with eight infrared cameras, surface electromyogram system and Wii
Fit system with a customized variable unstable base were used and kinematic and kinetic data obtained from the systems
were analyzed for five healthy male(24.8 ± 3.3 years, 177.4 ± 2.0 cm, 73.9 ± 12.9 kg, 23.5 ± 4.0 kg/m). The
results showed that the characteristics of the balance and muscle activations were differently responded to between
the dynamic motions in Anterior-Posterior(AP) and Medial Lateral(ML) directions. These findings may indicate that
customized dynamic motions should be applied to the training of the balance ability and muscle strength for the effective
prevention of the falling. This study may be meaningful to providing basic information to establish a guideline
improving effectively the balance ability and muscle strength.
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KEYWORD
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Muscle Strength, Balance Ability, Dynamic Motion, Motion Capture System, Electromyogram, Variable Unstable Base
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