• Title/Summary/Keyword: Abnormal posture

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Comparison of Severity of Occupant Injuries due to Different Airbag TTF with Occupant's Abnormal Seating Conditions while Driving an Automated Driving Vehicle (자율주행자동차에서 비정상 착석상태로 운전 시 에어백 작동시간(TTF)에 따른 승객 상해도 비교)

  • Park, Jiyang;Youn, Younghan
    • Journal of Auto-vehicle Safety Association
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    • v.11 no.3
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    • pp.13-18
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    • 2019
  • According to the development of autonomous vehicles worldwide, the driver's posture may not be a normal posture but the various seating positions. Recently, a numbers of research activities has been focused to protect of driver and passengers in various seating positions as well as seating postures. In this paper, the occupant injury severity was evaluated with different seat positions, seatback angles and TTF times.

Effects of Three Recumbent Postures on Autonomic Nervous System in Patients with Coronary Artery Disease

  • Kim, Wuon-Shik;Hwang, In-Kyoung;Choi, Hyoung-Min
    • International Journal of Vascular Biomedical Engineering
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    • v.3 no.2
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    • pp.10-16
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    • 2005
  • Because patients with coronary artery disease (CAD) have depressed vagal modulation and the mortality risk from acute myocardial infarction is lower in patients with higher vagal modulation, methods that can increase vagal modulation are desirable in patients with CAD. We intended to inspect the effect of recumbent posture on vagal modulation. By using angiography, 33 patients with abnormal (CAD group) and 33 patients with normal coronary arteries (control group) were studied. The nonlinear as well as the linear characteristics of heart rate variability (HRV) were analyzed on these patients in three recumbent postures: namely, the supine, right lateral decubitus, and left lateral decubitus postures. The lower the normalized high-frequency power (nHF) in the supine or left lateral decubitus posture, the higher the increase in the nHF when the posture was changed from supine or left lateral decubitus to right lateral decubitus in both groups of patients. Right lateral decubitus posture can lead to the highest vagal modulation and the lowest sympathetic modulation among the three recumbent postures in both normal and patients with CAD. Therefore, the right lateral decubitus posture can be used as an effective physiologic vagal enhancer in patients with CAD.

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The effects of body posture by using Baby Carrier in different ways (아기띠 착용 방법이 신체정렬에 미치는 영향)

  • Kim, Kyoung;Yun, Ki Hyun
    • Journal of the Korean Society of Physical Medicine
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    • v.8 no.2
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    • pp.193-200
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    • 2013
  • PURPOSE: The purpose of this study was to find out variations in body posture by using the baby carrier at the front side and back side. METHODS: Thirty two healthy and young female who will bring up infants and had no musculoskeletal disorders of neck, lumbar and low limb were recruited for this study. They were each marked about ears of tragus, cervical 7th, acromion anterior end, anterior superior iliac spine, posterior superior iliac spine, greater trochanter and lateral malleolus as landmarks to measure variations of body posture when they carry infants at the front side and back side. Landmarks were regarded as the creteria in order to measure NeckFlexion angle(NF), Foreward shoulder angle(FSA), Pelvic tilt(PT), Sway angle(SA), Head displacement(HD) and Scapular displacement(SD). Variations in body posture were measured from the neutral position to the front and back side by using Image J. RESULTS: There were significance level (p<.05) in NF, PT, SA, HD and SD except for FSA in two different side. CONCLUSION: The results of this study indicate that each of the using ways of baby carrier for baby care was influenced postural responses of young women. therefore, it could be considered to apply to women who have abnormal body posture in order to minimize musculoskeletal disorders.

A Study on the Assistive System for Body Correction (신체 교정을 위한 보조 시스템에 관한 연구)

  • Kim, Ho-Joon;Chung, Jae-Pil
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.4 no.4
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    • pp.231-235
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    • 2011
  • In these day, the number of people who have an abnormal posture caused by bad habit are increasing. Therefore, people suffer various disease and symptoms. For correcting the posture to cure, we need continuous monitor, expenditure of time and money. In this study, we develop a posture correcting aid system in other to monitor a posture continuously and leads to pose correctly and records postural variation which are attached to the neck and the waist. The devised system showed good potential for the correct posture guide and a cure of postural defect.

Research of Body Parameters Characteristics from Posture Analysis of Musculoskeletal Problem Patient (근골격계 통증환자의 통증유형과 체형진단을 통한 신체지표 관련성 연구)

  • Park, Jung-Sik;Park, Chang-Hyun;Song, Yun-Kyung
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.10 no.1
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    • pp.47-61
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    • 2015
  • Objectives : The purpose of this study is body parameters characteristics through posture analysis system of musculoskeletal problem patient Methods : Posture analysis system were performed for 164 patients to measure body parameters such as Q-angle, body inclination, neck inclination, PCMT(posterior cervical muscle tension), Knee flexion and posture balance. Statistical analysis using statistical analysis techniques and Pearson correlation coefficients was performed to assess the body parameters obtained by posture analysis system. Results : More than half of people out of 164 reported low back pain, 34.8% of the total was found to have neck pain. There was not a significant difference between genders from the characteristics of gender based body parameters expect for the statistical difference in Q angle, PCMT. There was a significant correlation between low back pain and multiple response status. There was a significant correlations between knee pain and Q angle. Also There was a significant correlations between pelvic pain and posture balance of ankle. Conclusions : Posture analysis system can be used to perform the analysis in place of X-ray measuring body posture and clinical parameters. The results of this study are expected to be the basis for further research on the clinical application of posture analysis system.

Clinical Study on the Correlation between 3-Dimensional MOIRE Topography and Questionnaire for School Screening in Scoliosis (척추측만증 검진을 위한 모아레 체형측정법과 설문조사의 상관성 연구)

  • Yoo, Han-Keel;Kim, Hae-Jung;Shin, Byung-Cheul
    • The Journal of Korea CHUNA Manual Medicine
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    • v.4 no.1
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    • pp.141-153
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    • 2003
  • Objectives : The purpose of this study is researching for correlation between Moire topography results and questionnaire which include obesity rate, height, weight, posture, pain aspect (low back pain, headache, fatigue, neck pain etc), studying posture, school attendance method, menarche. Methods : The authors practiced Moire topography and questionnaire for primary & middle school 24,419 students [male 12,843, female 11,576] in Jeonbuk, korea in 2002. After we distinguished students who had abnormal finding in Moire topography and statistically analysed the data. Results : According to this research, the abnormal finding in Moire topography results was 37.3% (9,105 students), and students needed X-ray re-examination were 3.9% (953 students). According to statistical analysis, male/female and primary/middle school students have no difference in deformity degree of the body surface examined by Moire. Height and weight have low correlation with deformity degree of the body surface examined by Moire and menarche, pain aspect have no correlation. But, school attendance method by bicycle and $90^{\circ}$upright sitting in study posture is the best way to decrease the deformity degree of the body surface examined by Moire. Conclusions : Following this research, throughout Moire topography could detect trunk asymmetry that couldn't be found existing X-ray examination, and school attendance by bicycle and $90^{\circ}$upright sitting in study posture is good for school students to prevent back deformity.

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Skeletal Joint Correction Method based on Body Area Information for Climber Posture Recognition (클라이머 자세인식을 위한 신체영역 기반 스켈레톤 보정)

  • Chung, Daniel;Ko, Ilju
    • Journal of Korea Game Society
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    • v.17 no.5
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    • pp.133-142
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    • 2017
  • Recently, screen climbing contents such as sports climbing learning program and screen climbing games. Especially, there are many researches on screen climbing games. In this paper, we propose the skeleton correction method based on the body area of a climber to improve the posture recognition accuracy. The correction method consists of the modified skeletal frame normalization with abnormal skeleton joint filtering, the classification of body area into joint parts, and the final skeleton joint correction. The skeletal information obtained by the proposed method can be used to compare the climber's posture and the ideal climbing posture.

Effect of Continuous Antagonistic Muscle Strengthening and Evjenth-Hamberg Stretching on Pulmonary Function of Forward Head Posture Subjects

  • Park, Joo Hyun
    • Journal of International Academy of Physical Therapy Research
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    • v.6 no.2
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    • pp.871-877
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    • 2015
  • This research was conducted to investigate the effect of continuous antagonistic muscle strengthening exercise and Evjenth-Hamberg stretching on the pulmonary function of university students with abnormal transformation of forward head posture(FHP). The results of study subject to the continuous antagonistic muscle strengthening(CAS) group(n=10) and Evjenth- Hamberg stretching(EHS) group(n=10) that was conducted 3 times a week for 6 weeks are as follow. FVC, IVC, and MVV all were shown to be significant in the pre post comparison between the CAS group and EHS group(p<.05), and significant difference was shown for MW between the two groups(p<.05) in which the CAS group showed better effect. Based on the results above, it is considered that combining continuous antagonistic muscle strengthening exercise has better effect on pulmonary function compared to application of only Evjenth-Hamberg stretching.

A Study on the Impact of Continuous Antagonist Strengthening and Evjenth-Hamberg Stretching on the Cervical Mobility in Forward Head Posture Subjects

  • Park, Joo Hyun
    • Journal of International Academy of Physical Therapy Research
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    • v.4 no.2
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    • pp.633-639
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    • 2013
  • This study aims to reveal the impact of continuous antagonist strengthening(CAS) and Evjenth-Hamberg stretching(EHS) on the cervical mobility in the university students with abnormal transformation of forward head posture(FHP). Our experiment was conducted 3 times a week for 6 weeks in a total of 20 individuals : continuous antagonist strengthening(CAS) group(n=10) & Evjenth-Hamberg stretching(EHS) group(n=10). In a pre and post comparison, both CAS group and EHS group appeared significantly in mSBI and SBA(p<.05) and the two-group comparison showed a significant difference(p<.05) : CAS group showed better effects. Thus, it is considered that the combined use with continuous antagonist strengthening(CAS) had better effects for cervical mobility than Evjenth-Hamberg stretching(EHS) alone.

Measurement Methods of Lower Extremity Alignment in Static Posture (정적 자세에서 하지정렬 측정방법에 관한 고찰)

  • Kong Hee-Kyung;Cho Hyun-Rae;Bae Sung-Soo
    • The Journal of Korean Physical Therapy
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    • v.15 no.1
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    • pp.1-8
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    • 2003
  • We need to study about lower extremity alignment because the structure dictates the function of lower extremity. Through lower extremity alignment assessment in static posture, we recognize abnormal structural conditions which could affect dynamic motion such as gait. To evaluate of lower extremity alignment provide so many useful information, but method of measurement is so limited. Therefore, this review will assist understanding for measurement of lower extremity alignment in static posture. From now on study about the objective measurement method must be achieved much more in physical therapy.

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