세계화와 국가시험.인증기관의 역할

성호용,Seong, Ho-Yong 기술표준원 2003 기술표준 Vol.21 No.-

Development and Cross-Validation of Equation for Estimating Percent Body Fat of Korean Adults According to Body Mass Index

성호용,문준배 대한비만학회 2017 The Korean journal of obesity Vol.26 No.2

Background: Using BMI as an independent variable is the easiest way to estimate percent body fat. Thus far, few studies have investigated the development and cross-validation of an equation for estimating the percent body fat of Korean adults according to the BMI. The goals of this study were the development and cross-validation of an equation for estimating the percent fat of representative Korean adults using the BMI. Methods: Samples were obtained from the Korea National Health and Nutrition Examination Survey between 2008 and 2011. The samples from 2008-2009 and 2010-2011 were labeled as the validation group (n=10,624) and the cross-validation group (n=8,291), respectively. The percent fat was measured using dual-energy X-ray absorptiometry, and the body mass index, gender, and age were included as independent variables to estimate the measured percent fat. The coefficient of determination (R2), standard error of estimation (SEE), and total error (TE) were calculated to examine the accuracy of the developed equation. Results: The cross-validated R2 was 0.731 for Model 1 and 0.735 for Model 2. The SEE was 3.978 for Model 1 and 3.951 for Model 2. The equations developed in this study are more accurate for estimating percent fat of the cross-validation group than those previously published by other researchers. Conclusion: The newly developed equations are comparatively accurate for the estimation of the percent fat of Korean adults.

한독 우수인재 개발 프로그램 HTP(Handok Talent Program)

성호용 한국기업교육학회 한국HRD연합회 2015 한국기업교육학회 한국HRD연합회 연합학술대회 Vol.0 No.-

가속도계와 설문지로 측정된 신체활동과 심혈관질환 위험요인의 비교

성호용,임정준,문준배,김연수 대한스포츠의학회 2020 대한스포츠의학회지 Vol.38 No.1

Purpose: The main purpose of this study was to compare the relationships between physical activity (measured using an accelerometer vs. self-reported) and cardiovascular disease risk factors. Differences in accelerometry physical activity between 10-minute bouts and total bouts were also compared. Methods: Data originated from the Korea National Health and Nutrition Examination Survey. Logistic regression was used to predict cardiovascular disease risk from physical activity levels. Results: Self-reported physical activity could not significantly predict the odds of having cardiovascular risk. However, the insufficiently active group classified according to the total-bout physical activity had significantly greater odds of having hypertension or prehypertension (odds ratio [OR], 1.35; 95% confidence interval [95% CI], 1.00–1.82), diabetes mellitus (OR, 1.77; 95% CI, 1.01–3.19), and dyslipidemia (OR, 1.65; 95% CI, 1.17–2.36) than the highly active group. Regarding the 10-minute bout physical activity, the inactive group had significantly greater odds of having only hypertension or prehypertension (OR, 1.67; 95% CI, 1.02–2.76) than the highly active group. Conclusion: Total-bout physical activity measured using an accelerometer could significantly predict the cardiovascular disease risk compared to 10-minute bout physical activity. However, self-reported physical activity could not significantly predict the cardiovascular disease risk.

한국과 미국 육군의 팔굽혀펴기 및 윗몸일으키기 측정형태별 근전도 분석

성호용,서성혁,김재우 육군사관학교 화랑대연구소 2018 한국군사학논집 Vol.74 No.1

The purpose of the study was to conduct electromyographic(E.M.G.) analysis of major muscles and examine the difference between two types of push-up and sit-up: Korea and U.S. Army. Twelve healthy participants performed two types of push-up and sit-up in two days, and eight muscle parts were selected to analyze E.M.G. differences. Paired t-test and effect size(ES) for %RVC were calculated and analyzed. Statistically significant difference was not found between two types of push-up, but the result showed relatively high effect size on pectoralis (ES=0.55) and tibialis anterior (ES=0.63) for U.S. Army push-up. The U.S. Army type of sit-up provided more stimulation on rectus abdominis than the Korea Army type (P=0.006, ES=0.79). The result of the current study provided general explanations about which muscles are measured by push-up and sit-up of Korea Army in comparison with those of U.S. Army. It also showed the difference of muscle activation between tests with and without additional tool. 본 연구의 목적은 팔굽혀펴기와 윗몸일으키기 한·미 육군의 두 측정방법 간 동일근육 내 근전도 차이를 분석비교 하는 것이다. 만약 유의미한 근전도 차이가 없으면 굳이 보조기구를 사용할 필요가 없을 수 있고 검정기구에 들어가는 예산을 절약 할 수 있을 뿐만 아니라 체력검정 준비소요를 줄일 수 있다. 또 한편으로, 유의미한 차이가 있을 경우에는 현재 한국 육군의 방법이 미 육군 방법에 비해 어떠한 차이가 있는지 관련 정보를 제공 할 수 있다. 실험결과, 팔굽혀펴기에서 통계적으로 유의한 근전도 차이는 없었지만, 큰 가슴근에서의 효과크기가 비교적 큰(ES=0.55) 결과를 나타내며 미 육군의 방식이 큰 가슴근을 더욱 많이 동원한다는 결과를 나타내었다. 윗몸일으키기의 한국 육군 방법에서 엉덩허리근과 넙다리빗근을 미 육군의 방법에 비해 더 많이 동원한 결과를 통해 한국 육군의 방법에서 사용되는 보조대의 형태가 하체부위의 근육을 추가로 동원할 수 있도록 도와주는 역할을 하는 것으로 예측된다.

객관적으로 측정된 좌식행동과 심혈관질환 위험요인의 비교

성호용 ( Hoyong Sung ),임정준 ( Jungjun Lim ),문준배 ( Junbae Mun ),김연수 ( Yeonsoo Kim ) 대한스포츠의학회 2020 대한스포츠의학회지 Vol.38 No.3

Purpose: The purpose of this study was to examine the relationship between sedentary behavior measured by accelerometer and cardiovascular disease risk factors from Korea National Health and Nutrition Examination Survey 2014-2015. Methods: The participants included in this study volunteered to wear accelerometer (n=1,407). Ordinal logistic regression was used to examine the relationship between sedentary time or sedentary breaks and cardiovascular disease risk factors. Odds ratios and 95% confidence intervals were calculated for the relationship. Covariates were sex, age, educational status, alcohol, smoking, socioeconomic status, body mass index, calorie intake, physical activity, and accelerometer wear time. Results: The group with the most sedentary time had significantly greater odds of having dyslipidemia (odds ratio, 2.47; 95% confidence interval, 1.54-3.94) compared to the least. There were no other significant relationships between sedentary behavior (sedentary time, sedentary break) and risk factors. Conclusion: The only significant relationship found in this study was that between sedentary time and dyslipidemia.

자연과학편 : 기초군사훈련 신입생도를 위한 체지방추정식 개발

성호용(HoYongSung) 한국체육학회 2014 한국체육학회지 Vol.53 No.6

이 연구의 주 목적은 육군사관학교 기초군사훈련 신입생도를 위한 체지방추정식을 개발하는 것이다. 실험에 참가한242명의 신입생도들을 무작위로 타당화 집단과 교차타당화 집단의 두 그룹으로 나누었다. 키, 몸무게, BMI, 신체둘레(어깨너비, 가슴, 허리, 엉덩이, 허벅지)를 측정하였고, 체지방 측정을 위해 InBody 230과 720이 사용되었다. 다중회귀분석을 통해 타당화 집단으로부터 체지방추정식을 도출하였으며, 다른 연구자들의 체지방추정식과 함께 교차타당화집단에 적용한 결과, 본 연구의 추정식이 다른 추정식 보다 비교적 정확하다는 결과를 얻었다 (R2=.519, SEE=4.657,TE=4.798). 본 연구의 결과로 산출된 체지방추정식은 기초군사훈련 신입생도들 또는 신체조건이 유사하거나 비슷한환경에 속한 집단에 대한 체지방을 추정하는데 유용한 수단을 제공한다. 추정된 체지방률은 생도들의 건강관리를 위해 훈육요원들과 군의관들에게 의미 있는 자료로 제공될 것이다. The purpose of the study was to develop an equation to estimate percent body fat for cadet during Basic Military Training. The participants of the study were 242 cadets and were divided into two groups: validation and cross-validation groups. Weight, height, circumferences (chest, waist, thigh, hip, and shoulder width) were measured. Percent body fat was measuredby InBody 230 and 720. The new equation was developed from validation group using multiple regression analysis. Theequation is valid to estimate measured percent body fat in comparison to the equations developed by other researchers, whenthose equations applied to cross-validation group in the currnet study (R2=.519, SEE=4.657, TE=4.798). The result of the currentstudy will be useful for estimating body fat of cadet during the Basic Military Training or in other circumstances since thevariables that must be measured are easy to measure and acquire in comparison to the variables included in the equationsdeveloped by other researchers. Furthermore, estimated percent body fat will be meaningful data for discipline officers andArmy surgeon to take care of health and fitness of cadets.

육군사관생도들의 체력훈련과 관련된 근골격계 부상현황 분석 및 예방방안 연구

김재우,성호용,이상원,서성혁 육군사관학교 화랑대연구소 2017 한국군사학논집 Vol.73 No.1

Purposes of the study were minimizing cadet's injuries through reviewing previously published research papers and analyzing causes of musculoskeletal injuries, and ultimately providing strategies for preventing cadets from any injury. For this, we reviewed problems of musculoskeletal injuries and risk factors of physical training-related injuries in the military, and surveyed injuries rate in KMA(Korea Military Academy) cadets. As a result, 58% had injury experiences at least once during last one year due to all physical activities including the military training, physical training, and sports. Among cadets, 48% was physical training and sports-related injuries. Female cadets were injured 1.35 times(Odds Ratio) compared to male cadets, and senior cadets were injured 3.6 times(Odds Ratio) compared to freshmen. Most of body parts injuries were occurred in lower legs as same as the results from previously studied research(ankle 29.6%, knee 20.6%, thigh 9.5%, foot 6.8%). Most of injury types were ligament and tendon splint 57.0%, bruises 15.2%, fracture and cartilage damage 5.9% Although a number of cadets were injured due to physical training, they did not received systematic managements including surveillance system, prevention education, and rehabilitation program. Therefore, this paper suggests the direction of development in terms of the essential elements of injury prevention program, the application of evidence - based arbitration method for injury prevention, and the construction of injured cadets management system. 본 연구는 스포츠를 포함한 체력훈련과 관련된 부상위험요인과 예방전략에 대한 문헌을 고찰하고, 생도들의 근골격계 부상형태 및 원인 분석을 통해 생도들의 부상을 최소화하고, 부상당한 생도들을 조기에 생도생활로 복귀할 수 있도록 부상예방 및 관리방안을 제시하기 위해 수행되었다. 이를 위해 군에서의 근골격계 부상문제와 체력훈련과 관련된 부상위험요인을 고찰하였다. 또한 육사생도들의 부상현황을 분석하였다. 분석결과, 생도생활동안 군사훈련 및 체육활동으로 인해 1회 이상의 부상경험이 58.0%였고, 체육활동과 관련된 부상은 48%였다. 여생도가 남생도에 비해 1.35배 높았고, 체력훈련에 노출이 많은 4학년 생도가 1학년 생도에 비해 3.6배 높았다. 부상부위는 발목 29.6%, 무릎 20.6%, 허벅지 9.5%, 발 6.8% 순으로 높았고, 부상유형은 인대 및 건 염좌 57.0%, 근육타박상 15.2%, 골절 및 연골 5.9% 순으로 높았으며, 이는 선행연구와 유사하게 대부분 하지부위의 인대 및 건 염좌였다. 하지만 다수의 생도들이 체력훈련으로 인한 부상을 당하고, 체계적인 관리를 받지 못하고 있는 것이 현실이다. 부상위험요인을 식별하여 부상을 예방하고 부상당한 생도들을 관리하여 조기에 정상적인 생도생활로 복귀시키는 관리시스템을 구축하는 것은 육군사관학교 및 육군의 전투력 향상에 크게 기여할 수 있다. 따라서 본 논문에서는 (1) 부상예방 프로그램의 필수요소, (2) 부상예방을 위한 근거중심의 중재방법 적용, 그리고 (3) 부상생도 관리시스템 구축 측면에서 발전방향을 제시하였다.

가속도계와 설문지로 측정된 좌식 시간과 대사증후군의 연관성

임정준,성호용,김준식,김건희,김정운,김연수 대한스포츠의학회 2022 대한스포츠의학회지 Vol.40 No.3

Purpose : The main purpose of this study was to examine the relationship between sedentary time and metabolicsyndrome. Association of accelerometer and self-reported sedentary time on metabolic syndrome were also compared. M ethods: A total of 1,354 adults (men, 492; women, 862), aged 19 to 65 years, who wore the accelerometer fromthe Korea National Health and Nutrition Examination Survey were included in the analysis. Four subgroups werecreated based on quartiles of daily sedentary time for analytical purposes. Metabolic syndrome was definedaccording to the International Diabetes Federation. Logistic regression was used to predict the odds ratio (OR),and 95% confidence interval (CI) of the relationship between sedentary time and metabolic syndrome after adjustingfor sex, age, education level, family income, smoking, alcohol consumption, body mass index, and accelerometerwear time. Results: Accelerometer measured sedentary time displayed stronger associations with the metabolic syndrome thandid self-reported sedentary time. When controlling for covariates, participants in the fourth quartile of theaccelerometer measured sedentary time predicted the highest odds of having metabolic syndrome (OR, 1.99; 95%CI, 1.18–3.34). However, participants in the second quartile only of self-reported sedentary time predicted the oddsof having metabolic syndrome (OR, 1.60; 95% CI, 1.01–2.52). Conclusion: Sedentary time was related to metabolic syndrome. This relationship tended to be more consistent andstronger for accelerometer measured sedentary time than for self-report. Current results suggest that reducing dailysedentary time may help prevent metabolic syndrome.

The Effects of 12-week Online-delivered Isometric and Dynamic Core Stability Exercises on Functional Movement, Dynamic Postural Control, and Core Endurance in Healthy Young Adults

손남국,성호용,김건희,최하림,류예운,Yeonsoo Kim 대한운동학회 2023 아시아 운동학 학술지 Vol.25 No.4

OBJECTIVES The purpose of this study was to compare the effects of 12-week online-delivered isometric and dynamic core stability exercises on functional movements, dynamic postural control, and core endurance in healthy young adults. METHODS This is a single-blind randomized controlled trial. Sixty young adults (age range: 19-34 years; 12 males, 48 females) participated in this study. They were randomly assigned to the isometric core exercise [ICE], dynamic core exercise [DCE], or control group. Participants in the ICE and DCE groups performed 40-60 min real-time online-delivered core exercise session via Zoom video conferencing application, twice a week for 12 weeks. Participants in the control group did not participate in exercise intervention. All participants were asked not to participate in other exercises for 12 weeks. The outcome measurements include the functional movement screen, Y-balance test (upper & lower), and core endurance tests (flexor, extensor, and lateral flexor of the trunk). RESULTS The results of this study showed significant improvement in core endurance, functional movement, and dynamic postural control of the upper body in the ICT and DCE groups compared with the control group. However, significant differences were not found between the ICE and DCE groups in all variables. CONCLUSIONS Both types of online-delivered core exercise programs have been shown to be effective in improving functional movement, dynamic posture control, and core endurance in young adults. In addition, since both types of exercise have been shown to be effective on core stability related variables, both types of exercise can be recommended for young adults. However, further studies are warranted to investigate the gender differences on the effects of the core stability exercises.