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Analysis of the Angular Momentum for the Bar Clearance Motion in the Fosbury Flop (높이뛰기의 바 넘기 동작을 위한 각운동량 분석)

  • Sung, Rak-Joon
    • Korean Journal of Applied Biomechanics
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    • v.14 no.3
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    • pp.119-134
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    • 2004
  • The purpose of this study was to analyze the angular momentum characteristics of the Fosbury Flop high jump and the role of the body segments for the production of 3 angular momentum components. The subjects were three male jumpers who were former Korean national team players. Their jumping motions were analyzed using the DLT method of three-dimensional cinematography. The conclusions were as follows. 1. All the forward angular momentum needed to clear the bar was created in the take-off phase. Take-off leg was the great contributor of the forward angular momentum. On the other hand, free leg produced large opposite angular momentum. 2. All subject had some lateral angular momentum before the take-off phase. Head and free leg had major contribution to the lateral angular momentum production. Take-off leg produced opposite angular momentum. 3. All subject had some twisting angular momentum, which make the back of the athlete him to the bar, before the take-off phase. Free leg was the major contributor of the twisting angular momentum. Head and trunk was the second contributor of the twisting angular momentum. 4. Total angular momentum needed to clear the bar had no significant correlation to the jumping height. 5. Subject who made excessive angular momentum showed different pattern of angular momentum production and had a poor record compared to other subject.

Gage R&R Study on Abdominal Sonography for Measuring Distance from Sangwan (CV13) to Pancreas - A Pilot Study - (복부초음파를 이용한 상완혈(上脘穴)-췌장 수직거리 측정시스템의 재현성 반복성 평가실험-A Pilot Study-)

  • Nam, Dong-Hyun
    • The Journal of the Society of Korean Medicine Diagnostics
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    • v.14 no.2
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    • pp.75-84
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    • 2010
  • Objectives: The objective of the current study is to determine whether an ultrasound device system is adequate for measuring distance from Sangwan (CV13) to pancreas. Methods: We recruited 3 healthy young male subjects and 2 sonographers. The each sonographer measured vertical shortest distance from CV13 to pancreas with a ultrasound device three times in random order. Because the total variation could be divided into repeatability, reproducibility and subject-to-subject variation in Gage R&R method, we compared the sources of variation associated with the measurement system with an analysis of variance model. Results & Conclusions: Number of distinct categories is calculated on the basis of standard deviation of subject-to-subject divided by standard deviation of total Gage R&R. If the number of categories is five or more, the measurement system may be acceptable for the analysis of the process. The number of distinct categories of the ultrasound device system for measuring distance from CV13 to pancreas was 6.29. So we concluded that repeatability and reproducibility of the ultrasound device system for measuring distance from CV13 to pancreas was acceptable.

Comparison of Preference for Convenience and Dietary Attitude in College Students by Sex in Seoul and Kyunggi-do Area (일부 남.녀 대학생들의 편의식에 대한 기호도와 식태도에 관한 비교)

  • Im, Yeong-Suk;Park, Hye-Ryeon;Han, Gwi-Jeong
    • Journal of the Korean Dietetic Association
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    • v.11 no.1
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    • pp.11-20
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    • 2005
  • This study was conducted to investigate preference for convenience food and dietary attitude in college students in Seoul and Kyunggi-do area. This study used a questionnaires as instrument tool. Thequestionnaire consisted of socio-demographic characteristics of the subjects, the valuation of preference for convenience, the concern of nutrition, and the dietary attitude. The subject were 199 males and 137 females. The mean age of subjects was 22.4$\pm$2.3year. The results have been summarized as follows Male students preferred more convenience food than females. Male students liked chicken, ice cream, ramyeon, pizza·hamburgerandfemalestudentslikedchicken,pizza, ice cream, ramyeon·hamburger. The kinds of convenience foods for a substitute meal were ramyeon, hamburger, bread, potato in male group and female group had frequently ramyeon, hamburger, bread, rice cake for a substitute meal. Male students were more likely to eat ramyeon (p<0.01) and purchased sabalmyeon The subjects used to purchase sabalmyeon as main convenience food at convenient store The score of preference for convenience food in male group was higher than female group. The score of attitude toward balanced diet in female group was higher than male group(p<0.01). In scores of concern for nutrition information, balanced diet, and nutrition knowledge, Female group had higher scores of concern for nutrition information, balanced diet, and nutrition knowledge than that of male group (p<0.01).There was no significant difference in the degree of preference for packing types, however, Male group tended to prefer more micro wave type than female group. The persons to affect the consumption of convenience food were friends. There was no significant difference in the time of purchase convenience food, however, Male tended to purchase convenience food at the time of snack than female group. As a results, proper nutritional education and qualitative development of convenience food are required in order to improve the consuming attitude of consumers and their preference for convenience food.

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Clinical Survival: Male Nurses Adaptation Process for Female Nurses (임상에서의 생존: 여성간호사에 대한 남성간호사의 적응 과정)

  • Kim, HyunSu;Yun, HeeJang
    • The Journal of the Convergence on Culture Technology
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    • v.5 no.2
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    • pp.139-146
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    • 2019
  • The purpose of this study is to find meaning of male nurses's adaptation to female nurses by grsping deeply what the adaption process of male nurses is from male nurses's point of views. What is the adaptation of male nurses to female nurses? With this research subject, we explored the adaptation process of male nurses to female nurses through phenomenological method. The study participants were 12 male nurses with more than 25 months of experience working in hospitals who agreed to the intention and method of the study. The results of this study were derived from 39 meanings of composition, 13 theme bundles, and 4 categories. As for the category, it was revealed that, in the case of maladjustment situation, there was a tendency to assimilate into force, interpersonal relationship, to improve the job ability, and to become a dedicated nurse. The results of this study can be used as basic data to develop effective nursing workforce management measures in the clinical field by understanding the adaptation process to female nurses of male nurses.

A Study on the Physical Growth and Health Status of the Freshmen in a Private University (일부사립대학교(一部私立大學校)의 학생(學生)의 성장(成長).발육(發育) 및 건강상태(健康狀態)에 관(關)한 조사연구(調査硏究))

  • Park, Yang-Won;Lee, Pyong-Kap;Park, Soon-Young;Kim, Hyong-Suk;Kim, Jae-Myung
    • Journal of Preventive Medicine and Public Health
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    • v.5 no.1
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    • pp.97-104
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    • 1972
  • For the purpose of ascertaining the status of physical growth and health status of the University Students, an intensive survey was conducted by the authors towards a total of 1,250 (Male 792, Female 458) who passed the written entrance examination at the Kyung Hee University in 1972. The items included the measurements on physical growth, various physical and nutritional indices, status of visual distourbance, dental status and tuberculosis. The findings and results cad be summarized as follows; 1. Physical Growth and Develspment. i) The average of body height by anthropometric was $169.39{\pm}5.05cm$ in male and $157.45{\pm}4.43cm$ in female. ii) The averages of body weight by sex were $59.42{\pm}6.47Kg\;and\;51.81{\pm}5.21Kg$, respectively. iii) The averages of chest-girth were $87.18{\pm}5.30cm\;and\;80.51{\pm}4.53cm$. iv) The averages of sitting-height were $92.21{\pm}2.79cm\;and\;86.28{\pm}2.57cm$. In all cases the male measurements were higher than female. 2. Various ludices about Physical Growth and Development; i) Relative body weights by sex were 35.08 and 32.91, relative chestgirth 51.47 and 51.13, and relative sitting-height 54.43, 54.79, respectively. ii) Rohrer index was 1.222 in males and 1.327 in females, Kaup index 2.071 and 2.089, Verveck index 86.54 and 84.04, and Pelidisi index 91.15 and 93.08, respectively 3. Status of visual distourbance The vision of the students under 0.8 with Landolt's testing chart was 45.4% in left eye and 46.6% in right eye(male: 44.4% and 45.7%, female: 47.2% and 48.0%), while under 0.6 in both visions was 41.0% and 40.5% (male: 40.8% and 40.7%, female: 41.5% and 40.2%), respectively. 4. Dental Status Out of total 19.4% (male 19.2%, female 19.6%) had gingivitis, the female incidence rate of gingivitis was higher than male. Average number of teeth in each subject was 29.6 teeth: male had 29.9 teeth and female had 29.1 teeth. The caries rate was 78.9%(male 75.6%, female 84.5%), the female caries rate was higher than male. Total filing per subject was 35.6% (male 34.0%, female 37.1%), female incidence was higher shan male. The average number of i) Caries per tooth rate was 8.5% in male and 9.2% in female, ii) Missing per tooth rate was 0.3% and 0.2%, iii) Filling per tooth rate was 3.9% and 4.2%. in all cases, the female incidences were higher than the male. The average number of D.M.F. was 3.8 teeth in male and 4.0 teeth in female, female was higher than male. The average rate of D.M.F. was 12.7% in male and 13.7% in female, female was higher than male. 5. Pulmonary infiltration Among the total, 53 students were diagnosed as pulmonary infiltration (tuberculosis), of whom 51 were minimal cases, one were moderately advanced case and one were far advanced case.

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The Effects of Flexion Angle of Shoulder Joints in Various Postures on Grip Strength (자세에 따른 어깨관절 굽힘 각도가 악력에 미치는 영향)

  • Lee, Sam Cheol;Kim, Bong Whan;Woo, Jung Jae
    • Journal of Korean Physical Therapy Science
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    • v.20 no.1
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    • pp.43-49
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    • 2013
  • Background and purpose : The shoulder joints permit the greatest mobility of any joint area carries out the important function of stabilization for hand use. Research has now shown that grip strength has proven to be a reliable indicator for quality of life at an older age. The purpose of this study was to investigate the effects of testing posture and shoulder position on grip strength for repetitive gripping task. Methods : Forty(20male, 20female) college adult volunteers with no known shoulder dysfunction participated subject in two testing posture(sitting and standing) and three positions with shoulder flexion: (1) shoulder $0^{\circ}$ flexion (2) shoulder $90^{\circ}$ flexion (3) shoulder $180^{\circ}$ flexion. The paired t-test was used to determine any significant difference in grip strength between the testing posture and shoulder position. Results : The higher grip strength gained in the sitting with the shoulder $180^{\circ}$ flexion and the higher grip strength gained in the standing with the shoulder $180^{\circ}$ flexion. The second experiment showed that the grip strength was significant for sitting, standing position of shoulder $0^{\circ}$ flexion( p<0.05). Grip strength goes up as increase height and weight. Conclusion : These findings demonstrate that the theory does not fit with, because of the influence of gravity, a measure from the shoulder joint is the most high, $0^{\circ}$. And sitting posture and stance in the grip of a difference when compared SIT $0^{\circ}$ and standing position $0^{\circ}$ significant difference in indicated but, $90^{\circ}$ and $180^{\circ}$ in the sitting position and stance in the grip of the difference was not significant difference. To demonstrate the universality of this study's results, future studies should have a larger and more subject as well as a more even distribution of male and female subject. Therefore future research is needed to refine the definition and identify optimal methods of measuring this grip strength.

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Unilateral cleft lip: evaluation and comparison of treatment outcome with two surgical techniques based on qualitative (subject/guardian and professional) assessment

  • Adetayo, Adekunle Moses;Adetayo, Modupe Olushola;Adeyemo, Wasiu Lanre;James, Olutayo O.;Adeyemi, Michael O.
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.45 no.3
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    • pp.141-151
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    • 2019
  • Objectives: The outcomes of the treatment of unilateral cleft lip can vary considerably due to variations in repair techniques. The aim of this study was to evaluate and compare treatment outcomes of surgical repair of unilateral cleft lip using either the Tennison-Randall or Millard technique based on (qualitative) parent/subject and professional assessments. Materials and Methods: This was a prospective, randomized, controlled study conducted at Lagos University Teaching Hospital between January 2013 and July 2014. A total of 56 subjects with unilateral cleft lip presenting for primary surgery who satisfied the inclusion criteria were recruited for the study. Subjects were randomly allocated to surgical groups A or B through balloting. Group A underwent cleft repair with the Tennison-Randall technique, while group B underwent cleft repair with the Millard rotation advancement technique. Surgical outcome was assessed using qualitative evaluation by the guardian/subject and independent assessors based on a modified form of the criteria described by Christofides and colleagues. Results: Of the 56 subjects enrolled in this study, 32 were male, with a male to female ratio of 1.3:1. Fifteen of the guardians/subjects in the Tennison-Randall group were most bothered about the lower part of the residual lip scar, while 12 guardians/subjects in the in the Millard group were most bothered about the upper part of the scar. More noses were judged to be flattened in the Millard group than in the Tennison-Randall group. Assessors observed a striking disparity in scar transgression of the philtral ridges between the two groups. Conclusion: Essentially, there were no major difference in the overall results between Millard rotation-advancement and Tennison-Randall repairs. Both Millard and Tennison-Randall's techniques require significant improvements to improve the appearance of the scar on the upper part and lower part of the lip, respectively.

The Subjective Estimation on the Ensemble and Comfort of Workers Wearing winter Uniform in Taegu (대구지역 동계 제복 근무자의 피복 착의 앙상블과 쾌적성의 주관적 평가)

  • Ryu, Duck-Hwan;Lee, Uk-Ja;Kim, Seong-Jin;Song, Min-Kyu;Cho, Ji-Hyun;Jung, Meung-Sun
    • Fashion & Textile Research Journal
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    • v.2 no.3
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    • pp.253-264
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    • 2000
  • The purpose of this study was to examine the thermal comfort characteristics of the garments for school, textile and bank worker's uniform. The garments selected for this study were frequently used in Taegu area in terms of design and material used for making garments by the survey for the study The human subject tests were performed to determine the thermal comfort characteristics of garments including thermal, humidity, and wearing sensation and the data were analysed statistically. The results of the study were as follows: 1. According to the result of the survey jacket was mostly used as a school uniform for both male and female high school students. The survey showed that 93% of male students wore 'neck T-shirts' and dimensional fitness for the school uniform got suitable at 2~3 grade high school students. In terms of human subject tests, most students rated 'uncomfortable' in wearing sensation of their school uniform. One of this reason was due to the humidity sensation and air velocity sensation. Level of significance of the thermal sensation for gender difference was higher in hands and feet of the subjects than in chest and thigh of them. 2. According to the result of the survey jacket with zipper was mostly used as a textile worker's uniform. The result of the survey indicated that some textile workers are wearing their inner wear (38.7% for upper and 46.6% for lower). In the human subject tests, about 50% of subjects rated 'comfortable to slightly comfortable' for wearing sensation of the textile worker's uniform. It showed that the female subjects of the humidity sensation was rated higher than the male subjects of the humidity sensation, while the male subjects of the thermal sensation was rated higher than the female subjects of the thermal sensation. There was a closer correlation with the subjective thermal sensation for textile worker's uniform in center parts of the subjects such as back and waist than exposed parts. 3. The result of the survey showed that 70% and 23% of the female banker uniform were blouse and jacket, respectively and 75% and 25% of the male banker uniform were jacket and T-shirt, respectively. All interviewee rated trousers and skirts that were used for their lower. 4. The result indicated that 50% male and 67.7% female subjects for the banker uniform rated 'slightly comfortable for the comfort' sensation. 50% male subjects rated 'neutral' and about 50% female subjects rated 'slightly warm to neutral' for the thermal sensation. In addition, The result showed that 75% male subjects for both upper and lower rated 'neutral' for the humidity sensation and also 75% female subjects rated 'neutral to slightly dry'. Thus, there was no significant different between gender. 5. In the thermal sensation of the subjects for the banker's uniform by parts, 50% subjects rated 'neutral' for their body parts, including head, neck, back, waist, hip, lower arm, and thigh. The extremely cold parts were hands and feet for both male and female subjects.

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A Study on Dietary Habits and Obesity of the Culinary College Students (조리전공 남녀학생의 식사행태와 비만도에 대한 연구)

  • Kim, Sook-Hee;Joung, Kyung-Hee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.2
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    • pp.741-746
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    • 2012
  • We studied about dietary habits and obesity of the culinary college students, the average age of male subject was 20.4 years, female 19.8years, male height 174.0cm, female 162.6 cm, body weight of male 71.4 kg, female 60.3 kg. Average body fat% of male was 20.5%, that of female was 30.2%, their average body fat% was at the range of overweight. Most subjects were not satisfied with their body weight and seemed to have ideal body shape as standard and lean. 51.6% of male and 35.2% of female students did not eat breakfast. Male students ratio of eating lunch every day was 41.7%, that of female was 27.0%, male students ratio of eating dinner every day was 54.8%, that of female was 35.5%. They liked to eat meal as rice type and 1-2day per week, they used to eat night snack. The first cause of not eating meal was lack of time. Under stress 56 % of male eated as much as usual, 58.7% of female eated more than usual.

A study on cosmetics purchasing behaviors of chinese male consumers according to social instrumentality of appearance and appearance orientation (중국 남성 소비자의 외모의 사회적 유용성과 외모지향성에 따른 화장품 구매행동 연구)

  • Sun, Li Dong;Lee, Mi-sook
    • Journal of the Korea Fashion and Costume Design Association
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    • v.20 no.3
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    • pp.33-48
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    • 2018
  • The purposes of this study were to investigate the social instrumentality of appearance, appearance orientation, and cosmetics purchasing behaviors of Chinese male consumers, and to find differences in the cosmetics purchasing behaviors of the male consumer groups, which were segmented by the social instrumentality of appearance and appearance orientation. The subjects were 400 adult males in their 20s to 30s from Gillim province in China. The measurements consisted of the social instrumentality of appearance, appearance orientation, cosmetics purchasing behavior, and the subject' demographic attributes. The data was analyzed by descriptive statistics, frequency analysis, $x^2$ test, multiple response analysis, cluster analysis, ANOVA, and Duncan's multiple range test, using SPSS program. The results were as follows. First, young Chinese male consumers had a high sense of the social instrumentality of appearance, but the tendency to invest time and effort to enhance their looks was still low. Second, on the basis of the social instrumentality of appearance and appearance orientation, young Chinese male consumers were classified into four groups (high involvement group, instrumentality group, orientation group, and low involvement group). Third, the four male consumer groups revealed many significant differences in various cosmetic purchasing behaviors (purchasing items, information sources, product selection criteria, purchasing motives, purchasing locations, store selection criteria, purchasing price, purchasing frequency, and cosmetics improvements). Therefore, the social instrumentality of appearance and appearance orientation are seen as significant variables to effectively segment the Chinese male consumer market. The cosmetics companies targeting young Chinese men need to establish differentiated marketing strategies, considering the characteristics of each segment of the consumer market.