• Physical Therapy Rehabilitation Science
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• 제9권4호
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• pp.275-280
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• 2020

Objective: Compression wear is an external aid which promotes performance and recovery, diminishes muscular microtrauma, reduces muscle fiber recruitment, improves neuromechanics, enhances coordinative activities, and reduces the perceived exertion. The purpose of this study was to investigate the relationship between athletic taping and compression wear on dynamic postural balance in healthy young men. The hypothesis was that the athletic taping and compression wear would affect dynamic postural balance, with athletic taping having a different effect on dynamic postural balance in healthy young adults. Design: Cross-sectional study. Methods: Thirty-seven healthy young men participated in this study. To examine the association between athletic taping and compression wear, 3 clinical measurement tools, including 5 times sit-to-stand (5xSTS), one-leg standing (OLS) test, and Y-balance test (YBT) in 5 different conditions, namely (1) non-supporting, and support with (2) athletic taping, (3) regular compression wear, (4) silicon compression wear, and (5) double-fiber compression wear were used. Results: The distance of the Y-balance test (YBT) on both the dominant and non-dominant sides showed a statistically difference among the 5 supporting conditions (p<0.05). The distance measured via the YBT in the non-support condition was significantly different than that in the other four supporting conditions (p<0.05). However, 5xSTS and OLS were not significantly different in these supporting conditions. Conclusions: The results of this study suggest that athletic taping, silicon compression wear, and double-fiber compression wear were more effective for dynamic balance than non-supporting and regular compression wear.

• 지적과 국토정보
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• 제49권1호
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• pp.145-156
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• 2019

본 연구는 조선 말기부터 일제강점기까지 제국주의 국가에 의해 설치되었던 조계의 특징과 토지문제에 관해 고찰하였다. 이를 위해 개항장과 조계 설치 관련 문헌을 검토하고 연대기적 분석을 실시하였다. 연구 결과 동아시아 지역은 서구 열강에 의해 중국과 일본이 앞서 개항하게 되었으며, 우리나라에도 개항장 설치 경험이 있던 일본의 주도로 개항장이 설치되었다. 결국 조선의 개항장에서 외국인이 자유로이 거주하며 치외법권을 누릴 수 있는 조계가 설치되었는데, 이는 조선에 불리한 형태였다. 또한 일본의 영향력이 높은 조계 내에는 일본식 토지 면적 단위인 '평'이 사용되었고, 이후 1910년 토지조사사업에서 사용된 면적단위의 기초가 되었다.

• 한국운동역학회지
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• 제29권3호
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• pp.197-204
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• 2019

Objective: The purpose of this study was to identify the effect of high-heels (HH) modification on metatarsal stress in female workers. Method: Seven females who work in clothing stores ($heights=160.4{\pm}3.9cm$; $weights=47.4{\pm}4.1kg$; $age=31.3{\pm}11.1yrs$; $HH\;wear\;career=8{\pm}6.5yrs$) wore two types of HH (original and modified). The modified HH had been grooved with 1.5 cm radius and 0.2 cm depth around the first metatarsal area inside of the shoes using the modified shoe-last. Participants were asked to walk for 15 minutes on a treadmill and to stand for 10 minutes with original and modified HH, respectively. Kinetics data were collected by the F-scan in-shoe system. After each test, participants were asked to rate their perceived exertion using the Borg's 15-grade RPE scale and interviewed about their feeling of HH. Nonparametric Wilcoxon signed-rank test and effect size (Cohen's d) were used to determine the difference of the variables of interest between the original and modified HH. Results: In the present study, modified HH of the peak contact pressure of 1st metatarsal (PCP) left, PCP right, pressure time integral (PTI) left, peak pressure gradient (PPG) left during standing and PPG right during walking are greater than original HH. And even it didn't show statistically significant, the average in all pressure values of modified HH showed bigger than original HH. It surmised to be related to awkward with modified HH. Even though they said to feel the comfortable cause of big space inside of HH in the interview, they seemed to be not enough time to adapt with new HH. So their walking and standing postures were unstable. Conclusion: Modified the fore-medial part of HH can reduce the stress in the first metatarsal head and big toe area during standing and walking.

• 동양고전연구
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• 제56호
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• pp.297-329
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• 2014

언간자료에는 '--'를 접사로 취하는 단어들 중에 어간의 일부가 된 '--'와 그에 뒤따르는 어미들이 생략되어 나타나는 경우가 빈번하게 나타난다. 이를 어기활용형이라 칭하고 언간에 나타나는 어기활용형의 기능 및 형대론적, 통사론적 제약을 살펴보았다. 제한된 시간 속에서 운필의 노력과 시간을 절약하기 위해 언간에서 독특하게 발달한 형식이 어기활용형이다. '-'구성에서 필수적인 내용은 'X'가 모두 가지고 있고 '--'와 뒤따르는 어미는 형식적인 기능만을 담당하기 때문에 어기 'X'만 남기고 후행성분은 과감히 생략하게 된 것이다. 어기활용형이 언어수행 상 나타나는 수의적인 언어현상이긴 하지만, 모든 조건에서 일어날 수 있는 것은 아니다. 가장 기본적인 문법적 기능만을 가지는 '-, -, -, -, -'가 쉽게 생략될 수 있음을 알 수 있었다. 그리고 언간자료에서 어기활용형을 구성하는 어기는 [+동작성]이든 [-동작성]이든 모두 서술성을 갖는다는 공통점이 있다. 이 시기의 파생접사 '--'는 어휘적 의미는 전혀 갖지 못하고 형식적 기능만을 갖고 있다. 이러한 이유로 '서술성어기+--'구성은 언어수행 면에서 어떤 조건만 주어지면 파생접사 '--'가 쉽게 생략될 수 있었다.

• 한국응급구조학회지
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• 제25권3호
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• pp.81-92
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• 2021

Purpose: The aim of the study is to measure the quality of cardiopulmonary resuscitation (CPR) and the fatigue of rescuers wearing PPE (Level D) during a CPR session and to ultimately provide suggestions of safety standards for rescuers. Methods: 36 subjects were enrolled in the study. The subjects were divided randomly into three groups of two-members, three-members, and four-members. Each group performed CPR for 30 minutes. Blood lactate concentration, heart rate, rating of perceived exertion, chest compression depth and rate were measured before experiment and after each cycle. Results: There was a difference in the blood lactate concentration during CPR cycle by member of shifts (p=.014). The blood lactate concentration increased during CPR (p=.000). Subjective fatigue was a significant difference of chest compression in cycles 3, 4, and 5 for the member of shifts during CPR (p=.049, p=.009, p=.015). Depth and rate of chest compression were not different for the member of shifts during CPR. Conclusion: It is necessary to establish standards for the member of shifts during CPR, to reduce the fatigue of rescuers.

• Investigative Magnetic Resonance Imaging
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• 제26권2호
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• pp.117-124
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• 2022

Purpose: In this study, we provide a way to assess even a slight effect of exercise on trunk-muscle activity. Materials and Methods: Seven healthy male participants (mean age, 24.7 ± 3.2 years; height, 171.2 ± 9.8 cm; and weight, 63.8 ± 11.9 kg) performed 15 sets of an exercise with 20 repetitions of 90° hip and right-knee flexion while lying supine. The exercise intensity was measured using the 10-point Rating of Perceived Exertion Scale after the first and 15th sets of exercises. Although cross-sectional areas and functional T2 mapping using ultrafast imaging (fast-acquired muscle functional magnetic resonance imaging, fast-mfMRI) have been proposed for imaging to evaluate exercise-induced muscle activity in real time, no previous studies have reported on the evaluation of trunk-muscle activity using functional T2 mapping. As a method for assessing trunk-muscle activity, we compared functional T2 mapping using ultrafast imaging (fast-mfMRI) with cross-sectional areas. Results: Although the muscle cross-sectional areas were increased by the exercise, there was no significant difference at rest. On the other hand, for all sets, the changes in T2 were significant compared with those at rest (P < 0.01). These results demonstrate that T2, calculated from fast-mfMRI images can be used to detect even a small amount of muscle activity induced by acute exercise, which was impossible to do with cross-sectional areas. Conclusion: Fast-mfMRI, which can also display functional information with detailed forms, enabled non-invasive real-time imaging for identifying and evaluating the degree of deep trunk-muscle activity induced by exercise.

• 운동영양학회지
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• 제24권1호
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• pp.29-36
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• 2020

[Purpose] The purpose of this study was to investigate the effects of short-term creatine intake on muscle fatigue induced by resistance exercise in healthy adolescent men, i.e., lactic acid concentration and wrist and head tremor measured by an accelerometer. [Methods] Twelve healthy adolescent men who had no experience with creatine intake were included. The subjects were randomly assigned to the creatine group and the placebo group, followed by 5 days of creatine and placebo intake, and 5 times of 5 sets of leg press, leg extension, bench press, and arm curl exercises at 70% repetition maximum (RM). The lactic acid concentration before and after exercising, rate of perceived exertion (RPE), and accelerometer-based wrist tremor and head tremor during exercise were measured. Subsequently, after 7 days to allow for creatine washout, the same exercise treatment and measurement were performed in each group after switching drug and placebo between the groups. [Results] The level of lactic acid before and after the acute resistance exercise trial was significantly lower in the creatine group than in the placebo group (P <0.05). The mean RPE during the resistance exercise was significantly lower in the creatine group than in the placebo group (P <0.05). There was no difference between the two groups in the mean wrist tremor during resistance exercise, but the mean head tremor values were significantly lower in the creatine group than in the placebo group in the arm curl, the last event of the exercise trials (P <0.05). [Conclusion] Short-term creatine intake reduces the blood fatigue factor increased by resistance exercise, and is thought to suppress fatigue, especially in the latter half of resistance exercise. Therefore, these findings indicate that short-term creatine intake can have an improved effect on anaerobic exercise performance.

• 디자인융복합연구
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• 제14권5호
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• pp.157-169
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• 2015

이 연구에서는 건강한 성인 남성 12명이 참여하여 3종의 겨드랑이 목발(Mobilegs, KM crutch, Pro In-motion)을 사용한 보행에서 광배근과 비복근에서의 근전도 반응과 보행에서의 편안함과 사용 편이성을 중심으로 한 사용자 인식 평가 실험을 수행하였다. 실험 결과, 광배근에서는 목발 사이에 통계적으로 유의한 차이가 없지만 비복근에서는 Mobilegs와 Pro In-motion이 KM crutch에 비해 현저히 낮은 활성도를 보였다. 이것은 Mobilegs와 Pro In-motion은 각각 겨드랑이 받침대 하단과 목발 하단에 스프링이 장착되어 있어 비복근에 요구되는 힘이 적은 것으로 추론할 수 있다. 사용자 인식 평가에서 Mobilegs는 보행 시 편안함과 사용 편이성에 대해 모두 다른 목발들에 비해 현저히 높은 결과를 보였다. 이것은 목발 보행 시 많은 힘이 집중되어 다양한 문제를 유발시키는 겨드랑이 받침대와 손잡이의 디자인 때문으로 추론할 수 있다. 종합적으로 볼 때, 연구의 결과는 스프링이 장착된 목발을 이용한 보행에서 비복근에서 적은 힘이 요구되어 보다 쉬운 보행을 가능케 함을 보여준다. 또한 이러한 목발의 디자인 특성은 근육에 요구되는 힘을 줄이고, 여기에 겨드랑이 받침대와 목발 손잡이의 합리적인 구조와 형태가 보태질 경우 사용자들은 그 목발을 사용한 보행에서 전체적으로 매우 편안하게 인식함을 알 수 있다.

• 대한영상의학회지
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• 제83권2호
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• pp.372-377
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• 2022

일측성 폐정맥 폐쇄는 총폐정맥이 좌심방내로 연결되는 못하는 드문 심혈관계 기형이다. 일측성 폐정맥 폐쇄는 흔히 어린 시기에 진단이 되며, 성인이 된 이후에 진단이 되는 경우는 극히 드물다. 성인 환자에서 활동 시 호흡곤란과 객혈이 흔한 임상증상이다. 폐실질의 이상은 폐정맥 폐쇄의 간접적인 소견이며, 간질성 폐질환으로 나타날 수 있다. 우리는 62세 여자 환자에서 일측성 간질성 폐질환을 보이는 일측성 폐정맥 폐쇄의 증례와 12년간의 흉부 X선 사진 소견의 변화를 보고하고자 한다.

• 한국의류산업학회지
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• 제26권1호
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• pp.123-136
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• 2024

This study aimed to assess the mobility and thermal comfort of personal protective equipment (PPE) among female healthcare workers, taking into account wearers' physique and PPE protection levels. A total of 16 participants (age: 26.3 ± 8.3 y, height: 161.5 ± 7.3 cm, body weight: 57.1 ± 11.0 kg, BMI: 21.9 ± 3.6), representing diverse body types, underwent four PPE conditions: L (Low_Plastic gown ensemble), M (Medium_Tyvek 400), H (High_Tyvek 800J with Powered Air Purifying Respirator [PAPR]), and E (Extremely high_Tychem 2000 with PAPR, Bib apron, and Chemical-resistant gloves). The mobility protocol consisted of 10 different tasks in addition to donning and doffing. The 10 tasks were repeated twice at an air temperature of 24.3 ± 0.1℃, 59±4%RH. Findings revealed a disproportionate relationship between PPE protection and wearer discomfort. Significant differences in clothing microclimate and total sweat rate were observed between the lowest (L) and highest (E) protection levels (p < 0.01), while distinctions among medium levels were inconclusive. Subjective evaluations favored conditions H and L over M and E (p < 0.05), indicating reduced heat, and humidity, increased comfort, and lower exertion. Instances of mobility discomfort, specially in the small body type group, underscored the need for a suitable PPE size system for Korean adult female medical workers. Furthermore, enhancements in gloves, shoe cover, and PAPR hood designs are essential for improving ease of movement and preventing hindrance.