• 한국생활과학회지
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• 제11권1호
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• pp.79-93
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• 2002

The purpose of this study was to determine the effect of dynamic characteristics of knitted fabrics on the clothing pressure of foundation. Five knitted fabrics of foundation were selected by different fiber types and blended ratios for the study. The dynamic characteristics of foundation wears made with five different fabrics were measured by KES-FB system method. The results of this study were as follows: 1. The tensile linearity and resilience of f1 were lower than those of other samples. While the tensile resistances of f1, f2 and f4 samples were high, the coefficients of friction of them were low. The bending rigidity and geometric roughness of f5 were higher than the others. 2. The clothing pressure of f3 all-in-one sample was the highest, and followed by f5, f4, f2 and f1, respectively. This result showed that the compression resilience affected on the clothing pressure greatly. 3. In terms of the clothing pressure by posture, the clothing pressure at $90^{\circ}$ bending posture was the highest and followed by that at standing and one-leg-up, respectively. The back part of abdomen was pressured most at $90^{\circ}$ bending posture.

• 한국전문물리치료학회지
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• 제11권1호
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• pp.45-52
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• 2004

Altered scapular kinematics in the scapular joint is commonly believed to be a factor contributing to trunk posture. The purpose of this study was to analyze the muscle activity with several changes of the shoulder angle. Tests were performed on 10 male subjects by repeated measures. Each subject was measured while sitting in both erect and slouched trunk positions. In each sitting posture, a three-dimensional motion analysis measurement was used to measure thoracic angle and shoulder abduction angle. Measurements were taken with the shoulder abdcution angle at $0^{\circ}$, $30^{\circ}$, $60^{\circ}$, $90^{\circ}$, $120^{\circ}$, and $150^{\circ}$. By using surface Electromyography (EMG) electrodes, we recorded the activity of the upper trapezius, middle trapezius, lower trapezius, middle deltoid, and serratus anterior muscle while the subject held a 4 kg weight at each angle. The mean of root mean square (RMS) of EMG activity was calculated. The middle trapezius, lower trapezius, and middle deltoid muscle activity showed significantly higher results but serratus anterior muscle activity showed significantly lower results (p<.05). With the shoulder angle increased, the muscle activity was also significantly increased (p<.05). In conclusion, the thoracic spine posture significantly affects the scapular muscle during scapular plane abduction, and the slouched posture is associated with increased trapezius muscle activity and with decreased serratus anterior muscle activity.