• PNF and Movement
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• v.10 no.1
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• pp.9-17
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• 2012

Purpose : This study's purpose is consideration about change of the hand grip strength according to different posture and shoulder flexion angle. The shoulder joint permits the greatest mobility and carries out the important function of stabilization for hand use. Hand grip activity is important to evaluate while assessing loads of shoulder in hand mobilities. Methods : Thirty(15 male, 15 female) college students with unknown shoulder dysfunction participated subject in five different positions of elbow extension with sitting and standing posture, different positions is followed : (1) shoulder $0^{\circ}$ flexion (2) shoulder $45^{\circ}$ flexion (3) shoulder $90^{\circ}$ flexion (4) shoulder $135^{\circ}$ flexion (5) shoulder $180^{\circ}$ flexion. Results : On the average, in the hand grip strength, the standing posture is higher than sitting posture. Sitting posture showed a most high level at the man's $0^{\circ}$ and woman's $135^{\circ}$. And standing posture showed a most high level at the man's $135^{\circ}$ and woman's $90^{\circ}$. Conclusion : The paired t-test was used to determine the different in grip strength between sitting and standing posture by shoulder angle change. There was no significant difference between the five position by sitting and standing posture. In man, correlation analysis revealed significant connection for all five position by sitting and standing posture. And in woman, correlation analysis revealed connection for all five position by sitting and standing posture.

• Journal of the Korean Society of Physical Medicine
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• v.16 no.4
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• pp.125-137
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• 2021

PURPOSE: The growing number of people exposed to a static sitting posture has resulted in an increase in people with a poor posture out of the optimally aligned posture because of the low awareness of a correct sitting posture. Learning the correct sitting posture by applying sensory feedback is essential because a poor posture has negative consequences for the spine. Therefore, this study examined the effects of the sensory feedback types on learning correct sitting posture. METHODS: Thirty-six healthy adult males were assigned to a visual feedback group, a tactile feedback group, and a visuotactile feedback group to learn the correct sitting posture by applying sensory feedback. The spine angle, muscle activity, and muscle thickness were measured in the sitting position using retro-reflexive markers, electromyography, and ultrasound immediately after, five minutes, and 10 minutes after intervention. RESULTS: The intervention time was significantly shorter in the visuotactile feedback group than the visual feedback group (p < .05). Compared to the pre-intervention, the repositioning error angles of the thoracic and lumbar vertebrae of all groups were reduced significantly immediately after intervention and after five minutes. After 10 minutes, there was a significant difference in the thoracic and lumbar repositioning error angles of the tactile feedback group and the visuotactile feedback group (p < .05). No significant difference was noted at any time compared to the pre-intervention in all groups (p > .05). CONCLUSION: The use of tactile and visuotactile feedback in intervention to correct the sitting posture is proposed.

• PNF and Movement
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• v.21 no.2
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• pp.159-169
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• 2023

Purpose: The study examined the effect of dynamic taping and Kinesio Taping intervention on round shoulder posture, pectoralis minor length, craniovertebral angle, and balance in 20s adults with rounded shoulder posture. Methods: A total of 20s Adults with rounded shoulder posture were recruited and randomized to Group I (n = 15) and Group II (n = 15). Group I performed dynamic taping. Group II performed Kinesio Taping. Round shoulder posture and pectoralis minor length were measured using a tape measure. The craniovertebral angle was measured using a goniometer. Balance was measured using Biorescue. Results: As a result of comparison within groups, groups I and II showed a significant difference for round shoulder posture, pectoralis minor length, craniovertebral angle, and balance after the experiment (p < 0.05). In a comparison between the two groups, the experimental group showed a more significant difference in round shoulder posture, pectoralis minor length, craniovertebral angle, and balance than the control group (p < 0.05). Conclusion: This study showed that dynamic taping intervention was effective in round shoulder posture, pectoralis minor length, craniovertebral angle, and balance in 20s adults with rounded shoulder posture.

• Journal of the Ergonomics Society of Korea
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• v.29 no.3
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• pp.331-336
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• 2010

The purpose of this study was to identify the effect of the craniocervical posture on swallowing and hyoid bone movement with sitting posture in wheelchair, and to provide basic data for developing a treatment program for dysphagia. A total of sixty healthy adults without a history of dysphagia who were guardians or care assistants of inpatients at Hospital K underwent video fluoroscopy performed by physiatrists from April to July 2009. The results of the fluoroscopy were analyzed based on the measurement of hyoid bone movements. The hyoid bone movement(horizontal, vertical, and diagonal) was significantly high in the neutral craniocervical, chin-tuck, and sixty degrees extension postures, in descending order(p<.05). It was found that the neutral craniocervical posture is the most effective posture for hyoid bone movement with sitting posture in wheelchair.

• IEIE Transactions on Smart Processing and Computing
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• v.5 no.4
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• pp.267-273
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• 2016

Hand posture recognition is an important technique to enable a natural and familiar interface in the human-computer interaction (HCI) field. This paper introduces a hand posture recognition method using a depth camera. Moreover, the hand posture recognition method is incorporated with the Moving Picture Experts Group Rich Media User Interface (MPEG-U) Advanced User Interaction (AUI) Interface (MPEG-U part 2), which can provide a natural interface on a variety of devices. The proposed method initially detects positions and lengths of all fingers opened, and then recognizes the hand posture from the pose of one or two hands, as well as the number of fingers folded when a user presents a gesture representing a pattern in the AUI data format specified in MPEG-U part 2. The AUI interface represents a user's hand posture in the compliant MPEG-U schema structure. Experimental results demonstrate the performance of the hand posture recognition system and verified that the AUI interface is compatible with the MPEG-U standard.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2016.05a
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• pp.72-73
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• 2016

Working Posture is an important factor directly connected with quality and productivity of the construction project. In particular, High-rise building construction is required to manage the working posture due to the repetitive task and unfavorable working condition such as high place work, limited space. However existing construction planning of high-rise building construction has a negative effect on the labor's productivity because it is not insufficiently considered for working posture. Therefore the purpose of this study is to suggest a work that needs improvement by analyzing labor's working posture quantitatively using OWAS method. These results would provide the basic information to improve the productivity of the construction project by supporting the construction plan considering the working posture in high-rise building.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.947-948
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• 2006

This paper proposes a robust posture stabilization control method for wheeled mobile robots. To solve the robust posture stabilization, we introduce reference generation mode, reference tracking mode, and reference regulation mode. In reference generation mode, a kinematic time-invariant controller is used to generate the reference trajectory which starts from the initial posture of the actual robot to the desired posture. In reference tracking mode, a sliding mode position controller is employed in such a way that the actual robot can follow the reference trajectory in the desired forward or backward moving direction, even in the presence of the disturbances in the dynamics. In reference regulation mode, a sliding mode heading direction controller is used such that the actual robot can maintain the desired posture against the disturbances. In this way, robust posture stabilization can be achieved at almost all global regions.

• Proceedings of the ESK Conference
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• 1996.04a
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• pp.291-300
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• 1996

This study is to determine the biomechanical characteristics of Korean. Male 58 and Female 54 were participated for the measurement which was performed by immersion method and reaction board method. Body parts were head with neck, trunk, upper arm, forearm, hand, thigh, leg, and foot. Their volumes were measures by immersion method. Their weight were determined by using Dempster(1995), Drills and Contini(1969) density data. Each center of body part weight were determined by specific posture on the reaction board. The postures were asked to the subject forearm- lifted posture, total let- lifted posture, foot-lifted posture. According to each posture, the center of each part were calculated.

• Journal of Oral Medicine and Pain
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• v.18 no.2
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• pp.131-147
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• 1993

To evaluate the contribution of head/neck posture to signs/symptoms of craniomandibular disorder(CMD), the author clinically, cephalo-metrically, analyzed craniomandibular index (CMI), clinical dysfunction index(CDI), occlusal index(OI) and head posture, cervical spine, cervicovertebral anatomy, craniofacial variables from 30 CMD patients and control. And the author analyzed difference between patients and control, and the correlation between CMI, CDI and head posture, cervical spine, cervicovertebral anatomy, craniofacial variables in CMD patients and control. The obtained results were as follows : 1. There was very high significant correlation between CMI and CDI(r=0.8969, p<0.01). 2. There was significant difference between patients and control in head/neck posture, head/neck anatomy(p<0.05). 3. There was significant correlation between CMI, CDI and head posture, cervical spine, cervicovertebral anatomy, craniofacial variables(p<0.05). 4. There was more significant correlation between DI and head/neck posture, head/neck anatomy than between PI and head/neck posture, head/neck anatomy in CMD patients(p<0.05)

• The Journal of Korean Physical Therapy
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• v.22 no.5
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• pp.63-70
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• 2010

Purpose: In this study, children with cerebral palsy were treated for 8 weeks using horse riding trunk proprioception, stability and posture to investigate the effect of hippotherapy in the field of physical therapy. Methods: A total of 18 subjects were divided into an experimental group treated by horseback riding and a control group. Both groups were evaluated pre- and post-treatment. Trunk proprioception was measured three times in the sitting position with their eyes and ears closed to reach the target position the angle error of the mean was calculated. Trunk stability was measured using a forceplate and the data were used to calculate the postural sway path & postural sway velocity. Posture was evaluated using the Posture Assessment Scale (PAS). Results: After hippotherapy, the experimental group showed a significant improvement in trunk proprioception, stability and posture (p<0.05), but the control group improved in posture only (p<0.05). Trunk proprioception, stability and posture was significantly different between the two groups (p<0.05). Conclusion: Eight weeks of hippotherapy is effective in improving trunk proprioception, stability, and posture. Research using this therapy should be studied further as a possible new therapeutic approach in the field of physical therapy.