• Safety and Health at Work
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• 제4권3호
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• pp.149-155
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• 2013

Background: Stochastic resonance whole-body vibration training (SR-WBV) was tested to reduce work-related musculoskeletal complaints. Methods: Participants were 54 white-collar employees of a Swiss organization. The controlled crossover design comprised two groups each given 4 weeks of exercise and no training during a second 4-week period. Outcome was daily musculoskeletal well-being, musculoskeletal pain, and surefootedness. In addition, participants performed a behavioral test on body balance prior to when SR-WBV started and after 4 weeks of SR-WBV. Results: Across the 4-week training period, musculoskeletal well-being and surefootedness were significantly increased (p < 0.05), whereas musculoskeletal pain was significantly reduced only in those who reported low back pain during the last 4 weeks prior to the study (p < 0.05). Body balance was significantly increased by SR-WBV (p < 0.05). Conclusion: SR-WBV seems to be an efficient option in primary prevention of musculoskeletal complaints and falls at work.

• 천문학회보
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• 제46권2호
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• pp.42.1-42.1
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• 2021

Galaxy/Halo finding based on the friends-of-friend (FoF) algorithm has been widely adopted for its simplicity and expandability to the phase-space. However, cosmological simulations have been progressively bigger in size and more accurate in resolutions, resulting in that galaxy/halo finding gets computationally expensive more and more. In fact, we confirm this issue through our exercise of applying the 6-dimensional (6D) FoF galaxy finder code, VELOCIraptor (Elahi et al.2019) on the NewHorizon simulation (Dubois et al. 2021), in which typical galaxies with about 1e11 M_sun (10⁷ particles) are identified with very low speed (longer than a day). We have applied several improvements to the original VELOCIraptor code that solve the low-performance problem of galaxy finding on a simulation with high resolutions. Our modifications find the exact same FoF group and can be readily applied to any tree-based FoF code, achieving a 2700 (12) times speedup in the 3D (6D) FoF search compared to the original execution. We applied the updated version of VELOCIraptor on the entire NewHorizon simulation (834 snapshots) and identified its galaxies and halos. We present several quick comparisons of galaxy properties with those with GALAXYMaker data.

• Asian Pacific Journal of Cancer Prevention
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• 제15권12호
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• pp.4815-4821
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• 2014

Background: This study aimed to examine the relationship between respiratory health of Malaysian adolescents with secondhand smoke (SHS) exposure and smoke-free legislation (SFL) implementation. Materials and Methods: A total of 898 students from 21 schools across comprehensive- and partial-SFL states were recruited. SHS exposures and respiratory symptoms were assessed via questionnaire. Prenatal and postnatal SHS exposure information was obtained from parental-completed questionnaire. Results: The prevalence of respiratory symptoms was: 11.9% ever wheeze, 5.6% current wheeze, 22.3% exercise-induced wheeze, 12.4% nocturnal cough, and 13.1% self-reported asthma. SHS exposure was most frequently reported in restaurants. Hierarchical logistic regression indicates living in a comprehensive-SFL state was not associated with a lower risk of reporting asthma symptoms. SHS exposure in public transport was linked to increased risk for wheeze (Adjusted Odds Ratio (AOR) 16.6; 95%confidence interval (CI), 2.69-101.7) and current wheezing (AOR 24.6; 95%CI, 3.53-171.8). Conclusions: Adolescents continue to be exposed to SHS in a range of public venues in both comprehensive- and partial-SFL states. Respiratory symptoms are common among those reporting SHS exposure on public transportation. Non-compliance with SFL appears to be frequent in many venues across Malaysia and enforcement should be given priority in order to reduce exposure.

• 한국운동역학회지
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• 제27권2호
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• pp.91-97
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• 2017

Objective: To investigate rotation movement of segment for performing each position and its effect on knee/hip angulation, COM inclination, and edging angle changes. Method: Twelve Alpine skiers (age: $25.8{\pm}4.8years$, height: $173.8{\pm}5.9cm$, weight: $71.4{\pm}7.4kg$, length of career: $9.9{\pm}4.6years$) participated in this study. Each skier was asked to perform counter-rotation, neutral, and rotation positions. Results: Shank and thigh were less rotated in the counter-rotation position than in other positions, whereas the trunk and pelvis were more counter-rotated (p<.05). Hip angulation, COM inclination, and edging angle were significantly greater in the counter-rotation position than in other positions (p<.05). Conclusion: Our finding proved that the counter-rotation position increases hip angulation, COM inclination, and edging angle. Consequently, we suggest that skiers should perform counter-rotation of the trunk and pelvis relative to the ski direction in the vertical axis for the counter-rotation position. Further analysis will continue to investigate the effects of the counter-rotation position in real ski slope with kinetic analysis.

• 한국임상수의학회지
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• 제31권5호
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• pp.412-416
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• 2014

7년령 수컷 핏불테리어에서 두드러진 복부팽창과 심각한 운동 불내성으로 내원했다. 진단검사에서 우심의 확장과 확연한 폐동맥의 확장, 간질성 폐침윤과 우심방과 우심실에 많은 수의 사상충이 발견 되었다. 심초음파의 컬러와 연속 도플러에서 역시 심각한 폐성 고혈압을 동반한 삼첨판과 폐동맥의 역류가 나타났다. 104마리의 심장사상충이 루프 스네어(Snare, Boston Scientific, USA)를 이용한 심장중재술을 통해 제거되었다. 사상충의 제거 후 임상컨디션은 눈에 뛰게 회복되었다. 본 증례는 한국에서 첫 번째로 시행된 루프를 이용한 사상충 제거 케이스이다.

• PNF and Movement
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• 제8권2호
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• pp.1-8
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• 2010

Purpose : The purpose of this study was to investigate the effects of proprioceptive exercise (PE) using a trampoline and a balance board on a balance ability after stroke. Method : Sixteen chronic stroke patients participated. Participants were randomly assigned to the PE group or control group (8 experimental, 8 control). All of participants were in-patients at local rehabilitation centre and had been receiving a traditional rehabilitation program, five days a week. The PE group have additionally undergone for four weeks, three days a week, the PE using a trampoline and a balance board under supervision by a physical therapist but control group was not received any additional program except the traditional rehabilitation program. The position sense test used to assess a proprioceptive sense at a knee joint. The Berg Balance Scale (BBS) and the Timed Up & Go (TUG) test to measure the balance ability were carried out before and after the training. Result : After the training the error of position sense at knee joint of PE group significantly decreased compared to the control group. The PE group demonstrated a significant improvement in the scores of the BBS and TUG. Conclusion : The present study suggests that the PE program using a trampoline and balance board may become a useful tool for enhancing a balance ability in chronic stroke patients through the ennced proprioceptive position senses.

• Nutrition Research and Practice
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• 제13권5호
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• pp.415-424
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• 2019

BACKGROUND/OBJECTIVES: Existing evidence on lifestyle modification programs for weight loss is limited by the high attrition rate of such programs. Identifying predictors of adherence to a lifestyle modification program could result in program improvement. However, little is known about behavior-specific adherence and its psychological predictors. This study aimed to examine the psychological predictors of adherence after one-month participation in a community-based lifestyle modification program among Chinese overweight and obese adults in Hong Kong. SUBJECTS/METHODS: A total of 205 Chinese overweight and obese adults aged $38.9{\pm}10.5years$ completed the study. Data were collected at baseline and after one month using self-reported questionnaires, which assessed knowledge (self-developed scale), motivation (Treatment Self-Regulation Questionnaire), stage of change (Stage of Exercise Scale) and self-efficacy (Self-Rated Abilities for Health Practices Scale). At one month, a 4-day dietary recall and the International Physical Activity Questionnaire-Short Form were used to assess dietary and physical activity (PA) adherence. Food and PA diaries were examined to indicate self-monitoring. Program attendance was tracked between baseline and one-month follow-up. RESULTS: After one month, participants reported high dietary adherence, attendance, and adherence to self-monitoring but low PA adherence. Multiple regression analyses suggested that diet self-efficacy (baseline) and nutrition knowledge (one-month change) were independent predictors of dietary adherence score at one month, whereas autonomous PA motivation (baseline) and PA self-efficacy (both baseline and one-month change) were independent predictors of PA adherence score at one month. No significant psychological predictor was identified for attendance or self-monitoring. CONCLUSIONS: The results suggest that the effect of psychological factors on adherence differs between diet and PA adherence outcomes. To promote adherence, practitioners should assess self-efficacy, knowledge, and motivation at the beginning of a weight-loss program and explore behavior-specific strategies to improve knowledge and self-efficacy. The results of this study have direct implications for program improvements.

• 운동영양학회지
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• 제25권4호
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• pp.10-16
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• 2021

[Purpose] The purpose of this study was to (i) assess hydration levels in elite male football players during a national team training camp before and during qualifying matches, (ii) evaluate the effect of coaching strategies for hydration based on feedback from hydration monitoring, and (iii) assess possible relationships between hydration status and training load or wellness markers. [Methods] Thirty-one male players (age 27±4 yrs; height 185±6 cm; weight 82.9±6.7 kg; body fat 10.4±2.3%) representing a national team from the Union of European Football Associations (UEFA) participated. The players were studied during three different national team training camps related to the UEFA Nations League tournament. Urine specific gravity (U_SG) was measured to assess hydration status. During all camps, the players were actively coached on improving strategies for hydration and given individual feedback on their test results. The training load was measured using GPS technology, and wellness questionnaires were completed. [Results] U_SG decreased progressively and significantly (p<0.005) during camp 1 and hydration status improved over the three camps, with fewer dehydrated and more well-hydrated players identified during the last part of camp 3. Significantly (p<0.05) higher U_SG values were observed 2 days prior to a match (MD-2) than on match day (MD); consequently, 52% of the players were dehydrated on MD-2 and only 6% on MD. No correlations were observed between hydration status and training load or wellness markers. [Conclusion] Dehydration is a challenge in elite male football, but continuous monitoring of hydration status and coaching on hydration strategies can lead to major improvements and reduce the degree of dehydration.

• 한국콘텐츠학회논문지
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• 제17권2호
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• pp.415-428
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• 2017

이 글은 엘리아스(Elias)와 부르디외(Bourdieu) 이론들을 바탕으로 한 한국 사회의 피트니스 회원에 대한 사회문화적 연구다. 이 연구의 목적은 경제적 자본과 문화적 자본이 달리 나타나는 피트니스 회원(강남/강북, 프라이빗/퍼블릭 센터) 사이의 권력관계에 대해 다차원적이고, 심층적인 분석을 하고자 한다. 이를 위해 인터뷰와 참여관찰 방법을 통해 강남과 강북 피트니스 회원들(강남 12명: 강북 12명)을 대상으로 몸의 기득권자-아웃사이더(Established-Outsider) 권력관계를 살펴본다. 사회 공간 내에서 참여자의 위치는 그들의 사회경제적 지위와 피트니스 자본의 수준에 따라서 결정되어졌다: 강남 기득권자 그룹(강남E), 강남 아웃사이더 그룹(강남 O), 강북 기득권자 그룹(강북 E), 강북 아웃사이더 그룹(강북 O). 네 그룹 회원들 간 몸의 기득권자-아웃사이더 관계는 몸 취향과 하비투스(피트니스센터의 선택, 몸의 과시, 사회적 평가, 근육만들기, 다른 스포츠에의 참여 등)와 문명화 과정(피트니스 매너 및 에티켓)에서 차이를 보였다. 강남과 강북의 피트니스는 단순히 운동을 하는 공간이 아니라 회원들 사이의 사회-문화적 위계를 재생산하고 영속화하는 상징적 공간으로 나타났다.

• 농촌의학ㆍ지역보건
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• 제37권4호
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• pp.246-257
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• 2012

본 연구는 부산지역 65세 이상 노인을 대상으로 질병상태를 정상, 만성질환, 우울증, 우울증을 동반한 만성질환의 4군으로 구분하여 질병상태에 따른 자가 평가 건강수준을 비교하고, 자가 평가 건강 수준에 관련된 요인을 관찰하고자 하였다. 연구 자료로 부산광역시 2009년 지역사회건강조사 자료를 활용하였고, 그 중 65세 이상 노인 2,549명을 추출하여 연구 대상으로 하였다. 자료는 SAS program(ver. 9.2)을 이용하여 ${\chi}^2$-test, multiple logistic regression을 복합표본분석 방법으로 분석하였다. 분석 결과 자가 평가 건강수준이 만성질환과 우울증의 단일질환만을 가진 경우보다 만성질환에 우울증을 동반한 경우 매우 낮게 관찰되었고, 만성질환자의 우울증 동반율이 높았다. 질병 상태이외에 여자에서, 교육수준이 낮은 경우, 경제수준이 낮은 경우, 중등도 운동을 하지 않는 경우, 걷기 운동을 하지 않는 경우 자가 평가 건강수준이 낮았다. 본 연구결과를 토대로 노인 만성질환관리 사업에 우울증 관리를 연계한 사업 모형을 개발하여 지역사회에 적용할 것과 노인 만성질환 관리 사업에서는 우선대상으로 취약계층과 여성을 고려하고, 운동 사업을 연계하는 것을 제안한다.