• 융합정보논문지
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• 제7권5호
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• pp.47-51
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• 2017

본 연구는 스마트폰 사용으로 인해 발생하는 전방머리자세의 유발 스트레스를 줄이기 위한 웨어러블 센서 착용이 전방머리자세 유발을 일으키는 목세움근과 위등세모근의 근피로에 미치는 영향을 알아보고자 하였다. 본 연구는 20~30대 건강한 성인을 대상으로 하여 일반적으로 스마트폰을 사용하는 대조군, 전방머리자세에 대한 자세를 의식하며 사용하는 비착용군 그리고 웨어러블 센서를 착용하는 실험군으로 나누어 근활성도를 살펴보았다. 목세움근과 윗등세모근의 근활성도는 대조군, 비착용군, 실험군과 비교하여 차이가 없는 것으로 나타났다. 또한 목세움근의 근활성도의 변화는 모든 군에서 증가하였고, 윗등세모근의 경우 비착용군과 대조군에 비해 착용군의 근활성도가 증가하였으나 통계적 유의성은 없었다. 즉 웨어러블 센서의 착용은 의식적인 자세 조절에 있어서 효과적일 수 있지만 다른 부위의 근긴장을 유발 할 수도 있다.

• 한국의류학회지
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• 제31권4호
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• pp.633-645
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• 2007

The purpose of this study is to develop brassiere patterns which are both fitting and functional for women aged 19 to 24(the 1924 generation). We suggested a 'size chart for body measurements' for constructing basic brassiere patterns with six sizes of '70, 75', 'AA, A, B cups', which are used most frequently by the 1924 generation consumers. The scope of research was in reference to the statistical analysis results of the Size Korea(2004) body measurements and the results of the data from the preceding research. The 'drafting method for constructing basic brassiere patterns for the 1924 generation consumers' was completed by selecting a total of 18 subjects, 3 for each six sizes in the scope of research, and three wearing tests were carried out with the subjects. We compiled one brassiere pattern in six sizes obtained with the drafting method of constructing a basic brassiere pattern on another by block pattern in order to observe the phase of change in dimensions and shapes of paper pattern. The result was converted into the variations of a x-axis and a y-axis, and we suggested 'Size Grading Rule' and 'Cup Grading Rule' for the basic brassiere patterns. As the results of the wearing evaluation of the basic brassieres and measuring the variation in body dimensions by wearing brassieres, the dimensions and shapes of the basic brassieres suggested in this research proved to be fitting and to have a wearing effect that brings together and supports the breasts.

• 대한물리의학회지
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• 제18권4호
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• pp.145-154
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• 2023

PURPOSE: This study was conducted to investigate the effect of the sling exercise wearing a neck orthosis on the craniovertebral angle, muscle tension, and headaches in adults with a forward head posture and tension headache. METHODS: In this single-blinded, randomized, controlled, comparative study, a total of 22 adults with forward head postures and tension headaches were randomly assigned to the experimental group (sling exercise wearing a neck orthosis, n = 11) or the control group (sling exercise without a neck orthosis, n = 11). All participants undertook the sling exercise program (3×/week for 4 weeks). The craniovertebral angle, muscle tension, and headache were measured before and after the 4-week training. RESULTS: Significant improvements were observed in the craniovertebral angle, muscle tension, and headache in the experimental group (p < .05). This group also showed a larger decrease in the muscle tension and headache (upper trapezius, -4.97 Hz vs -1.70 Hz, p < .05; splenius capitis, -5.44 Hz vs -2.54 Hz, p < .05; headache, -19.73 score vs -14.64 score, p < .05, respectively). CONCLUSION: The sling exercise wearing a neck orthosis could be an effective way to relieve the symptoms caused by a forward head posture. It could also be a more effective way of decreasing muscle tension and headaches than the sling exercise without wearing a neck orthosis.

• 한국운동역학회지
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• 제20권3호
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• pp.327-336
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• 2010

The purpose of this study was to analyze muscle activities on functional insole with diet effect. Originally, ten healthy female subjects with an average age of 23.2 year(S.D=1.1), weight of 49.7 kg(S.D=4.9), height of 163.2 cm(S.D=3.5) and a shoe size of 237.5 cm(S.D=4.9) were participated in this experiment. Ten healthy females walked on a treadmill(speed=about 4.2 km/h) wearing two different insole types. Muscle activities data was collected using the EMG operating system. The surface EMG signal for tibialis anterior(TA), gastrocnemius(GA), vatus lateralis(VL) and biceps femoris(BF) were acquired at the RMS(10 Hz, 350 Hz) using Noraxon Telemyo DTS system(Noraxon inc, USA). This study processed the data using the Windows SPSS ver.17.0 to get an independent t-test, with the setting, p<.05. Analysis of muscle activity were measured and calculated during walking. The results are as follow: Functional insole wearing were increased muscle activities significantly from Tibialis anterior(TA) during total gait cycle. Normal distribution was demonstrated in total step of stances period. One foot standing position showed decreased muscle activity. Two foot standing position was demonstrated with gastrocnemius and biceps femoris. As a result of the analysis, Functional insole will inerease the diet effect in the use of four muscle groups.

• 보건교육건강증진학회지
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• 제11권2호
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• pp.87-106
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• 1994

Owing to the use of many cultural facilities, the elevation of life standards and the high level progress of industry, visual impairment was on increasing trends. Especially due to studying for many hours, the myopia of adolescents became a serious social issue. The purpose of this study was to understand adolescent's wearing glasses and eyesight condition, whether the primary myopia factor and the subjective symptoms were different between the myopia group and the normal group, between the wearing glasses group and the non-wearing glasses group, and the effect on physical, mental and study activity of myopia. The subject of investigation was 627 middle school students in Seoul and the investigation was accomplished from July 7th, 1993 to July 12th, 1993. The data were analyzed by the percentage, x²-test, t-test and ANOVA of SPSS. The results were as followed; 1. The rate of the right and left eyesights higher than 0.8 in the normal group was 47.0%, and those less than 0.7 in the myopia group was 53.0%. In the boy students, the normal group was 54.1%, the myopia group was 45.9%. In the girl students, the normal group was 39.2%, the myopia group was 60.8%. Therefore the girl students' myopia rates were higher than the boy students', and this result was significant(p<0.01). 2. The rate of wearing glasses of the middle school students was 44.6%. The rate of wearing glasses of the girl students was 56.8%. The rate of wearing glasses of the girl students was higher than that of the boy students 43.2%. The rate of necessary glasses of the middle school students was 6.1% and the rate of necessary glasses of the boy students was 7.9%, the rate of necessary glasses of the girl students was 4.1%. 3. In case of a family member of the student wear glasses, the rate of wearing glasses was higher. 4. In the myopia group, the main reason for not wearing glasses was "Uncomfortable"(63.3% in the boy students, 40% in the girl students). In case of the girl students, "Nonpermission of their parents" was 18.7% and remarkably higher than 5.1% in case of the boy students. 5. The factor of myopia was that "The bad attitude of watching TV closely" was 19.9%, that "The dimly-lit room" was 6.6%. 6. In order to protect eyesight, the rate of the students who practiced "Looking at something from afar 3∼4times a day" was 37.3%, the rate of the students who did "Eye exercise" was 17.5%, the rate of the students who took "A medicine for promoting nutrition" was 12.9%. The rate of taking the medicine was higher than 3.5% in the normal eyesight group. 7. After near working, the point of subjective symptoms was higher in the myopia group than in the normal group and in the wearing glasses group than in the unwearing group and in the girl students than in the boy students. 8. The longer time to watch TV, the higher point of subjective symptoms. The longer distance to watch TV, the lower point of subjective symptoms(p<0.05).

• 대한교통학회지
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• 제21권2호
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• pp.7-16
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• 2003

본 논문은 자동차 충돌사고시 승객보호장구인 에어백과 안전벨트가 운전자 안전에 미치는 영향을 컴퓨터 모의충돌실험을 통해 연구하였다. 에어백 전개특성은 실제 에어백 전개 단품실험을 통해, 모의충돌실험차량의 감속도 특성은 실제 차량충돌실험 결과자료를 기초로 자동차 충돌해석 전문프로그램인 LS-DYNA를 이용하여 도출하였고, 에어백과 안전벨트가 운전자 안전에 미치는 영향은 승객거동해석 전문프로그램인 MADYMO를 이용하여 연구하였다. 연구결과. 충돌 후 운전자 머리에 작용하는 1차 접촉 가속도에 대한 저감효과는 에어백을 장착하고 안전벨트도 착용한 A상황이 가장 높고, 다음으로 B상황, C상황, D상황 순이다. 안전벨트가 운전자 머리보호에 미치는 효과는 에어백을 장착한 경우, 안전벨트를 착용한 경우가 안전벨트를 착용하지 않은 경우에 비해 최소 12.2%, 최대 32.5% 증대되고. 에어백을 장착하지 않은 경우는 안전벨트를 착용한 경우가 안전벨트를 착용하지 않은 경우에 비해 최소 14.2%, 최대 28.0% 운전자 머리보호 효과가 증대된다. 에어백이 운전자 머리보호에 미치는 효과는 안전벨트를 착용한 경우, 에어백을 장착한 경우가 에어백을 장착하지 않은 경우에 비해 최소 45.0%, 최대 59.8% 증대되고, 안전벨트를 착용하지 않은 경우에는 에어백을 장착한 경우가 에어백을 장착하지 않은 경우에 비해 최소 39.4%, 최대 66.5% 운전자 머리 보호효과가 증대된다. 특히, 에어백을 장착하고 안전벨트를 착용한 경우가 에어백을 장착하지 않고 안전벨트도 착용하지 않은 경우에 비해 최소 52.9%, 최대 70.5% 운전자 머리를 부상으로부터 보호하는 효과가 증대된다. 따라서. 충돌 후 운전자의 인명피해를 최소화하고 안전을 극대화하기 위해서는 차량에 에어백을 장착함과 동시에 안전벨트를 반드시 착용한 후 운행해야한다. 그러나, 충돌속도가 60Km/h 이상이면 에어백을 장착하고 안전벨트를 착용하였더라도 안전장구로써 기능이 저하되어 운전자 머리를 부상으로부터 보호할 수 없으므로 안전장구가 운전자 안전을 지켜주는 최선의 방법이 아니라 보조장구라는 것을 반드시 인식하여야 할 것이다.

• 한국ITS학회 논문지
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• 제15권6호
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• pp.127-137
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• 2016

좌석 안전띠는 자동차 안전장치 중 차량의 안전상 가장 중요하고 효과적인 장치로 알려져 왔다. 우리나라의 경우 운해중 안전띠의 착용률, 특히 뒷좌석의 착용률이 낮다. 최근 조사 자료에 의하면 뒷좌석의 안전띠 착용률은 20%의 수준이다. 최근 좌석 안전띠 미착용 알림장치(Seat Belt Reminder, SBR)를 의무화하는 것을 고려중에 있다. 본 연구는 SBR의 의무화할 경우의 도입효과에 대한 분석이다. 본 연구에서 안전띠 착용효과는 해외의 연구사례(Evans(1991) 모형)를 준용하였다. 주요 변수로 안전띠 초기착용률은 국내 조사자료, SBR로 인한 목표 착용률은 운전자 순응도에 따른 시나리오에 따라 추정하였다. 연구 결과, 좌석안전띠 미착용 경고장치의 운전자 순응비율이 90%이상일 경우 매해 119명의 사망자의 감소효과를 가져올 것이고, 편익비용비가 1.84에 달할 것으로 분석되었다.

• 한국의류산업학회지
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• 제17권6호
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• pp.988-995
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• 2015

Gaps between the upper edges of brassiere mold cups and the breasts are one of the most serious issues in realizing comfort wearing of commercial brassieres for small-breasted women. The surplus ease amounts causing the fit problem were measured from 3D wearing images of the small-breasted women's brassieres. The effect after the removing the surplus ease amounts from the upper edge of mold cup was approved by subjective wearing evaluation. Since the volume distribution of mold cup can also affect the wearing sensation of brassiere, the subjective wearing sensation was compared for two brassieres of different volume distributions, V_L, of which volume was concentrated at the lower cup, and V_C, which has the thickest part at the nipple. As the results, the suitable sensation for cup volume and the natural wearing silhouette could be accomplished by removing the surplus ease amounts from the upper edge of mold cup to reduce the gaps between brassieres and the breasts, which could be accomplished through an approach reducing the volume near the upper edge of mold brassiere cup and making the volume concentrated at the lower cup. These works provide a useful information on the design of the brassiere mold cups for small-breasted women. Moreover, modeling methods of 3D scan data and 3D printing technique for making more accurate mold cases used in this research can be helpful to develop and evaluate clothing products in future.

• 대한예방한의학회지
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• 제9권2호
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• pp.93-106
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• 2005

A survey was performed for 2 weeks in October 2004 in order to examine the effects and changes of far infrared and anion of office workers aged 40 and older before and after wearing the underwear. In the survey, questionnaires and photoplethysmography were used to measure the difference between the two tests conducted with one week interval. The findings could be summed up as follows: 1. There was no statistically significant difference in changes of vascular aging points and photoplethysmogram wave form before and after wearing the far infrared and anion underwear but the points showed the increasing tendency(p>0.05). 2. A statistically significant difference was confirmed since the total points of each item in the questionnaires increased after wearing the underwear(p<0.001). 3. In connection with the systemic symptoms, a significant difference was found with increased points in all items except for no. 6 after wearing the underwear(p<0.05). 4. With regard to the difference before and after wearing the underwear depending on the Kidney symptoms, there was a significant difference with increased points in all items except for item no. 1 after wearing the underwear(p<0.05). In conclusion, to put on the underwear with effect of far infrared and anion is believed to smooth metabolism and blood circulation, contributing by thus to promoting health and preventing disease. Further studies with wider sampling of subjects are requested to diversify and refine the findings from this sectional study.

• 대한인간공학회지
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• 제32권3호
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• pp.229-236
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• 2013

Objective: The purpose of this study was to analyze the effects of wearing spandex underwear on the muscle activity and heart rate during flexion and extension of trunk and knee joint. Background: Back pain continues to be the leading overall cause of physical illness and lowering productivity in workplace. Recently, the utility of assistive garment or back belt have been discussed to lessen the back pain as well as to preserve the right posture. Method: Ten males and ten females participated in the experiment. Gender, wearing spandex underwear and postures were used for independent variables, and muscle activity, the level of asymmetry of muscle activity and variation of heart rate were used as dependent variables. Muscle activity and heart rate were measured during flexion and extension of trunk and knee joint. Results: When wearing spandex underwear, the muscle activity was relatively low compared to the condition not wearing the spandex underwear. The symmetry of muscle activity and the variation of heart rate were statistically significant at the 0.05 significance level. In particular, it was found that the symmetry of muscle activity increased while wearing spandex underwear. Conclusion: Spandex underwear has an effect that can reduce asymmetry of right and left muscles which are relevant to leg because spandex underwear equally supports right and left low-back muscles. Application: The spandex underwear used in this study can apply to the rehabilitation as an useful assistive device.