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Correlation of Forearm Circumference; With Hand Grip Strength
신헌석,Cynn, Heon-Seock Korean Physical Therapy Science 2001 대한물리치료과학회지 Vol.8 No.2
이 연구의 목적은 전완 원주와 악력과의 상관관계를 알아보는 것이다. 오른손잡이 여성 30명이 이 연구에 참여하였으며, 연구의 대상자의 평균 연령은 31.0세였다. 전완 원주는 척골의 주두와 경상돌기의 1/2 지점과 근위 3/4 지점에서 줄자를 이용하여 측정하였다. 악력은 미국 수부 치료사 협회의 기준에 의하여 Jarmar dynamometer를 사용하여 측정하였다. 통계학적 분석은 피어슨 상관 관계 계수를 이용하여 상관관계를 조사하였다. 전완 두 지점에서 측정된 원주와 악력간에는 낮은 상관관계를 나타내었다(r=.02. p=.921; r=.02, p=.928). 연구 대상자 30명 중 정기적으로 상체 운동을 하는 18명의 연구 대상자들의 전완 두 지점에서도 낮은 상관 관계를 나타내었다(r=.16, p=.521: r=.18, p=.468). 본 연구의 결과는 선행된 다른 연구 결과와는 상이하게 높은 상관관계를 나타내지 않았다. 그 이유로는 본 연구에서 악력에 영향을 주는 여러 가지 요소들(신체 유형, 운동 습관. 직업 피하 지방성분, 유전적 요소 등)의 측정이 고려되지 않았고. 연구 대상자의 수(n=30)가 적었다는 점을 들 수 있다.
하지 운동 시 의자 종류와 골반 자세가 복근과 요추신전근의 활성도에 미치는 영향
최인용,신헌석,김택훈,노정석,Choi, In-Yong,Cynn, Heon-Seock,Kim, Tack-Hoon,Roh, Jung-Suk 대한물리치료과학회 2006 대한물리치료과학회지 Vol.13 No.3
The purpose of this study was to investigate effects of different chair type (with backrest chair and without backrest chair) and pelvic position (anterior pelvic tilting and posterior pelvic tilting) on three abdominal muscles (upper rectus abdominis, external oblique, internal oblique) and back extensor activation during lower extremity exercise. The four different conditions during bilateral knee extension exercise were: (1) leaning on backrest chair with anterior pelvic tilting, (2) leaning on backrest chair with posterior pelvic tilting, (3) anterior pelvic tilting without backrest chair, and (4) posterior pelvic tilting without backrest chair. Fifteen healthy male subjects with no history of neuromusculoskeletal disease voluntarily participated in this study. Electromyography (EMG) was used to collect muscle activation data, and muscle activation data was expressed as a percentage of maximal voluntary isometric contraction (%MVIC). One-way repeated analysis of variance (ANOVA) was used to determine the statistical significance, and Bonferroni comparison was used as a post hoc test. The results of this study were the following: (1) Erector spinae activation was significantly lower in posterior pelvic tilting without backrest compared with that in leaning on backrest chair with anterior pelvic tilting. (2) Upper rectus abdominis activation was significantly lower than erector spinae in all four different chair type and pelvic tilting conditions.
상지운동 동안 복부에 적용된 압력 차이가 요부와 복부 근육 활성도에 미치는 영향
고은혜,윤혜선,신헌석,이강성,Ko, Eun-Hye,Yoon, Hye-Sun,Cynn, Heon-Seock,Lee, Kang-Sung 대한물리치료과학회 2003 대한물리치료과학회지 Vol.10 No.2
The purpose of this study was to assess the effect of applied pressure to abdomen on lumbar and abdominal muscle activation during upper limb exercise. The experimental group consisted of twenty-seven healthy male subjects (mean age=$22.40{\pm}2.19years$, mean height=$175.30{\pm}2.19cm$, mean weight= $67.67{\pm}7.44kg$, RM=$8.43{\pm}2.76kg$). In each different pressure condition (OmmHg, 30mmHg, 70mmHg, 100mmHg), upper limb exercise was performed in total of 10 trials with 10 RM dumb-bell exercise. Lumbar and abdominal muscle activity was measured using surface bipolar electrode electromyography(EMG). EMG activity was measured from upper rectus abdominis, external oblique abdominis, internal oblique abdominis, and elector spinae. The raw EMG signal was processed into the root mean square(RMS). All RMS EMG data were normalized and express as a percentage of the EMG(%EMG). Collected data were statistically analyzed by SPSS/PC Ver 10.0 using two-way analysis of variance for repeated measures($4{\pm}3$) and Bonferroni post hoc, test. Lumbar and abdominal muscle activation was significantly increased when 100 mmHg was applied(p<.05). Upper rectus abdominis activation was significantly increased compared as other muscles activation(p<.05). However, there were no interaction between pressure and muscles(p>.05). The findings of this study can be used as a fundamental data when lumbar orthosis is applied and external pressure can be used as a therapeutic tool.
엎드린 자세에서 고관절 신전 시 고관절 외회전 각도가 골반과 하지 근활성도에 미치는 영향
오윤찬 ( Yun Chan Oh ),신헌석 ( Heon Seock Cynn ),이충휘 ( Chung Hwi Yi ),전혜선 ( Hye Seon Jeon ),윤태림 ( Tae Lim Yoon ) 한국전문물리치료학회 2014 한국전문물리치료학회지 Vol.21 No.3
The aim of this study was to investigate the effect of hip external rotation angle on pelvis and lower limb muscle activity during prone hip extension. Sixteen healthy men were recruited for this study. Each subject performed an abdominal drawing-in maneuver (ADIM) in a prone position, and extended the dominant hip at three different hip external rotation angles (0°, 20°, 40°) with a 30° hip joint abduction. Activity of the gluteus maximus (G Max), gluteus medius (G Med), and hamstring (HAM) and the G Max/HAM and G Med/HAM ratios were determined with surface electromyography (EMG). The EMG signal was normalized to 100% maximum voluntary isometric contractions (MVICs) and expressed as %MVIC. Data were analyzed by one-way repeated analysis of variance (alpha level=.05) and the Bonferroni post hoc test. Significant differences in G Max and G Med muscle activity were noted among the three different hip external rotation angles. G Max muscle activity increased significantly at both 40° (p=.006) and 20° (p=.010) compared to a 0° hip external rotation angle. G Med muscle activity increased significantly at 20° (p=.013) compared to a 40° hip external rotation angle. The G Max/HAM activity ratio increased significantly at both 40° (p=.004) and 20° (p=.014) compared to a 0° hip external rotation angle. The G Med/HAM activity ratio increased significantly at 20° (p=.013) compared to a 40° hip external rotation angle. In conclusion, 40° and 20° hip external rotation angles are recommended to increase G Max activity, and 20° hip external rotation is advocated to enhance G Med muscle activity during prone hip extension with ADIM and 30° hip abduction in healthy subjects.
뒤시엔느 근 이영양증 환자에서 기능 수준과 측정 자세에 따른 최대호기유량, 1초간노력성호기량 및 최대기침유량의 변화
김기송(Ki-song Kim),신헌석(Heon-seock Cynn) 한국전문물리치료학회 2009 한국전문물리치료학회지 Vol.16 No.3
It is important to find the effective position for cough and sputum clearance in respiratory physical therapy. The purpose of this study was to compare the changes in peak expiratory flow (PEF), forced expiratory volume in 1 second (FEV1), and peak cough flow (PCF) related to functional level and measurement position in patients with Duchenne muscular dystrophy. Twenty one subjects were classified into three functional levels, and measurements was undertaken in three different measurement positions (upright sitting, 45˚ reclining and supine). Vitalograph PEF/FEV DIARY was used to measure PEF and FEV1, and Ferraris Pocket Peak was used to measure PCF. Mixed two-way analysis of variance and Bonferroni post-hoc test were used for statistical analysis. The results of the study were as follows: 1) Significant main effects for measurement position were found. 2) PEF was the highest in upright sitting, followed by 45˚ reclining, and supine in order. 3) FEV1 in upright sitting and 45˚ reclining were significantly greater compared with that in supine. 4) PCF in upright sitting and 45˚ reclining were significantly greater compared with that in supine. 5) No significant main effects for functional level were found in PEF, FEV1, and PCF. 6) No significant functional level by measurement position interactions were found in PEF, FEV1, and PCF. Therefore, it is concluded that upright sitting and 45˚ degree reclining positions are recommended for effective cough and sputum clearance.
이광재,노정석,최흥식,김장환,최규환,신헌석,Lee, Kwang-Jae,Roh, Jung-Suk,Choi, Houng-Sik,Kim, Jang-Hwan,Choi, Gyu-Hwan,Cynn, Heon-Seock 대한물리치료학회 2012 대한물리치료학회지 Vol.24 No.4
Purpose: This study is to identify how eye movement influences the static balance and fall efficacy of the elderly who have experienced fall-related injuries. Methods: Thirty nine elderly who scored 24 points in the Korean mini mental state examination, were able to walk, and had no specific disease, were selected as the research subjects among elderly who have experienced fall-related injury more than once in the past year. Thus, 20 for the experimental group, and 19 for the control group were selected as subjects. The experiment was conducted for 6 weeks, including periods of evaluation before and after intervention. Results: The results with respect to the dependent variables are as follows: Substitute sample t-testing showed significant differences between each group in eye movement to check difference in balance performance and fall efficacy. When independent sample t-tests were conducted to compare static balancing performance and fall efficacy between the two groups after intervention, they showed significant differences in statistical terms (p<0.05). Conclusion: From the above results of the study, it was found that the application of eye movement combined with diverse fall prevention programs is effective, when enhancing static balance performance power and improving fall efficacy.
푸시업플러스 시 근전도 바이오피드백을 이용한 전거근의 선택적 강화
전용진 ( Yong Jin Jeon ),정성대 ( Sung Dae Choung ),김시현 ( Si Hyun Kim ),신헌석 ( Heon Seock Cynn ) 한국전문물리치료학회 2011 한국전문물리치료학회지 Vol.18 No.1
Push-up plus has been advocated for increasing the activity of the serratus anterior muscle, the most critical scapular stabilizer. However, no previous study has reported the possibility of compensatory motion on the part of the pectoralis major, which could substitute for the action of the serratus anterior during push-up plus. The aim of the current study was to investigate the immediate effect of electromyography (EMG) biofeedback of the pectoralis major muscle on the pectoralis major, upper trapezius, and serratus anterior muscles during push-up plus. Fourteen healthy young subjects voluntarily participated in this study; each subject performed push-up plus from the quadruped position, in two conditions (i.e., with or without visual and auditory biofeedback). Surface EMG was used to measure pectoralis major, serratus anterior, and upper trapezius activity. A paired t-test was used to determine any statistically significant difference between the two conditions. Additionally, effect size was calculated to quantify the magnitude of EMG biofeedback in each muscle. Visual and auditory feedback reduced pectoralis major muscle activity significantly (p=.000) and increased the serratus anterior muscle activity significantly (p=.002), but did not induce a significant difference in upper trapezius muscle activity (p=.881). Thus, it is concluded that the visual and auditory feedback of pectoralis major muscle activity can be used to facilitate serratus anterior muscle activity during push-up plus.