Abstract
The purpose of this study is to investigate the relation between stiffness and the elbow joint angle. A mechanomyogram (MMG) was recorded from biceps brachii muscle at three different elbow angles: 90, 120, and 150 degrees. The biceps brachii muscle was electrically stimulated and its mechanomyogram was measured with an acceleration sensor attached to the skin of the belly of the biceps brachii muscle. The transfer functions from the stimulation to the MMG were identified by the singular value decomposition method, and the natural frequency was derived from the transfer function. As a result, the MMG was approximated with a fourth-order model. The lowest natural frequency increased as the elbow joint angle increased. It was concluded that biceps brachii muscle stiffness increased as the elbow joint angle increased.
| Original language | English |
|---|---|
| Pages (from-to) | O-164-O-165 |
| Journal | Transactions of Japanese Society for Medical and Biological Engineering |
| Volume | 52 |
| DOIs | |
| Publication status | Published - 2014 Aug 17 |
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Keywords
- Biceps brachii
- Mechanomyogram
- System identification
ASJC Scopus subject areas
- Biomedical Engineering
Cite this
Elbow joint angle dependency of biceps brachii muscle stiffness with an aid of system identification of mechanomyogram. / Itabashi, Yuki; Uchiyama, Takanori.
In: Transactions of Japanese Society for Medical and Biological Engineering, Vol. 52, 17.08.2014, p. O-164-O-165.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Elbow joint angle dependency of biceps brachii muscle stiffness with an aid of system identification of mechanomyogram
AU - Itabashi, Yuki
AU - Uchiyama, Takanori
PY - 2014/8/17
Y1 - 2014/8/17
N2 - The purpose of this study is to investigate the relation between stiffness and the elbow joint angle. A mechanomyogram (MMG) was recorded from biceps brachii muscle at three different elbow angles: 90, 120, and 150 degrees. The biceps brachii muscle was electrically stimulated and its mechanomyogram was measured with an acceleration sensor attached to the skin of the belly of the biceps brachii muscle. The transfer functions from the stimulation to the MMG were identified by the singular value decomposition method, and the natural frequency was derived from the transfer function. As a result, the MMG was approximated with a fourth-order model. The lowest natural frequency increased as the elbow joint angle increased. It was concluded that biceps brachii muscle stiffness increased as the elbow joint angle increased.
AB - The purpose of this study is to investigate the relation between stiffness and the elbow joint angle. A mechanomyogram (MMG) was recorded from biceps brachii muscle at three different elbow angles: 90, 120, and 150 degrees. The biceps brachii muscle was electrically stimulated and its mechanomyogram was measured with an acceleration sensor attached to the skin of the belly of the biceps brachii muscle. The transfer functions from the stimulation to the MMG were identified by the singular value decomposition method, and the natural frequency was derived from the transfer function. As a result, the MMG was approximated with a fourth-order model. The lowest natural frequency increased as the elbow joint angle increased. It was concluded that biceps brachii muscle stiffness increased as the elbow joint angle increased.
KW - Biceps brachii
KW - Mechanomyogram
KW - System identification
UR - http://www.scopus.com/inward/record.url?scp=84939456428&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84939456428&partnerID=8YFLogxK
U2 - 10.11239/jsmbe.52.O-164
DO - 10.11239/jsmbe.52.O-164
M3 - Article
AN - SCOPUS:84939456428
VL - 52
SP - O-164-O-165
JO - BME = Bio medical engineering / henshu, Nihon ME Gakkai
JF - BME = Bio medical engineering / henshu, Nihon ME Gakkai
SN - 1347-443X
ER -