• Korean Journal of Health Education and Promotion
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• v.3 no.1
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• pp.56-62
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• 1985

This paper attempts to search demagraphic and socio characteristics of unmarried female workers aged 15-19 years using the data of unmarried female factory workers' survey made by the Korea Institute for Population and Health. Total number of female workers analysed for the study is 250, most of them finished high school(58 percent) or middle school(37 percent). Their average monthly income is 97,000 won and the income is mainly used for self-support, family support and saving for future plan. While 67 percent of the respndents have had experience of association with opposite sex, most of them insisted that purity of female should be kept until marriage As result, sex and population education program for those young female workers should be strengthened in consideration with their age characteristics.

• Journal of Animal Science and Technology
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• v.64 no.4
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• pp.792-799
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• 2022

Dopamine (DA) is known to be a key modulator of animal behaviors. Thus, the plasma concentration of DA might be used as a biomarker for the behavioral characteristics of horses. The behavioral characteristics of horses vary depending on the breed, age, and sex. Moreover, the DA receptor genotypes are also related to horse behaviors. Thus, the aim of this study was to investigate the DA concentration variations of horse plasma by breed, age, sex, or genotype of its receptor. The horses were divided by breed into Thoroughbred (n = 13), Pony (n = 9), Warmblood (n = 4), and Haflinger (n = 5). The age variable was divided into three different groups: post-pubertal (2-5 years, n = 6), adult (6-13 years, n = 19), and aged horses (15-24 years, n = 6). The sex variable was divided into geldings (n = 8) and mares (n = 23). Approximately 10 mL of blood was collected, and an ELISA kit was used to measure the plasma concentration of DA. Polymerase chain reaction analysis was performed to identify the genetic variation in the DA D4 receptor gene (DRD4). SPSS statistical software was used for statistical analysis. The DA concentrations in geldings were significantly lower than those in mares. There was no significant difference in DA concentrations among breed and age groups. Horses with the GG and GA genotypes had significantly higher plasma concentrations of DA compared to horses with the AA genotype for the G292A gene. Briefly, the plasma concentration of DA varied depending on the sex and genotype of G292A. These factors should be considered when the concentration of DA is used as a biomarker for the behavioral characteristics of horses. In conclusion, the DA concentration or DRD4 genotype of horse plasma has the potential to be used as a biomarker that can predict the behavioral characteristics of horses.

• Journal of Aquaculture
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• v.10 no.1
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• pp.49-54
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• 1997

Characteristics of sex ratio and morphometric traits of induced allotriploid between female rainbow trout, Oncorhynchus mykiss and male cherry salmon, O. masou were performed. Sex ratios in both rainbow trout and cherry salmon were equally 1:1, while hybrid and allotriploid revealed higher proportion of male offspring (p<0.01). Body trait measurements of allotriploid in head hight/head length, length of dorsal fin base/body length and length of pectoral fin/body length were intermediate to their parental species, while in length of upper jaw/head length, allotriploid much more resembled that of rainbow trout. These facts proved that allotriploidization improved characters in sex ratio and morphometric traits compared to those o their parental species.

• Physical Therapy Korea
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• v.30 no.4
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• pp.275-280
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• 2023

Background: Although warm-ups before exercise are widely accepted, research on sex differences in improving hamstring flexibility is limited. Differences in the physical and physiological characteristics between males and females may result in different responses to warm-ups. Objects: This study aimed to examine sex differences in the effects of specific warm-up on hamstring flexibility. Methods: This study included 24 young adults with hamstring tightness. The participants performed five maximal knee extensions and flexions at 90° flexion of the hip, and the maximal knee extension angle was measured in real-time using a smartphone clinometer application. Results: The groups did not significantly affect the maximal knee extension angle but showed a significant effect for repetition (p = 0.002) and group-repetition interaction (p = 0.002). Males had no significant change in hamstring flexibility; however, females showed a significant increase in flexibility in the 5^th trial compared with the 1^st trial (p = 0.041). These results demonstrated sex-specific differences in flexibility improvement over time. Conclusion: The findings of this study suggest that specific warm-up can successfully improve hamstring flexibility in females. This may be due to various factors, such as muscle stiffness of the lower extremity, estrogen levels, and temperature sensitivity. In clinical settings, specific warm-up might be helpful for females who participate in sports or activities, such as running or jumping, which require a full range of motion in the hip and knee joints.

• Women's Health Nursing
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• v.11 no.2
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• pp.120-128
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• 2005

Purpose: This study was conducted to describe the perception of parental sex role held by university students and to examine differences in perception of parental sex role according to student characteristics. Method: The participants were 336 university students in Gangreung city. The instrument of parental sex role was developed by the researcher and consisted of 3 subcategories; general parent role, parental sex role as a father and parental sex role as a mother. Results: The most positive item of parental sex role as a father is 'the Father's role is teaching about the value of society'. The most positive item of parental sex role as a mother is 'the Mother's role is to be a counselor or friend'. There were significant differences in perception of a father's role according to sex, type of college, fathers who lived with student during childhood, the relationship with the parent, the plan of marriage & having a child, responsibility of childrearing, and the need for education for the parental role. There were significant differences in perception of the mother's role according to sex, grade, type of college, birth order, type of family, persons who lived with student during childhood, the relationship with the parent, plan of marriage & having a child, responsibility of child-rearing, and the need for education for the parental role. Conclusion: The parental sex role changes overtime. Thus, it is important to identify university student's perception of parental sex roles as pre-parent preparation for parenting.

• Journal of the Korean Home Economics Association
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• v.34 no.3
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• pp.75-87
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• 1996

The purpose of the study was to examine the effect of sex role orientation on the amount of time spent in meal preparation and cleanup, clothing care, and indoor cleaning accomplished by husbands and wives in couple-headed households in the U.S.. The overall research hypotheses examined were : (1) there is a relationship between demographic and socioeconomic characteristics of the husband and wife and the sex role orientation of the husband and wife; (2) for both husbands and wives, there is a relationship between sex role orientation and the amount of household production time that is accomplised by each individual; and (3) the relationship between sex role orientation and the amount of household production time remains when demographic and socioeconomic factors are controlled. The 1981 data from the 1975-1981 Time Use Longitudinal Panel Study collected at the University of Michigan were used for this study. The major findings is that a relationship between sex role orientation and the amount of time spent in three household production activities was not found, when all independent variables were controlled. That is, sex activities was not found, when all independent variables were controlled. That is, sex role orientation was not a predictor affecting the amount of time that husbands and wives spend on meal preparation and cleanup, clothing care, and indoor cleaning.

• Journal of the Korean Society of Clothing and Textiles
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• v.22 no.4
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• pp.460-468
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• 1998

The purpose of this study were 1) to identify the differences between homosexual and heterosexual men in clothing behaviors(fashion leadership, preference for up-to-date style and sexual attractiveness), lifestyle and sex-role attitudes, and 2) to investigate the relation- ships between clothing behaviors and lifestyle and sex-role attitudes. The data was collected via self-administered questionnaires from 183 adult men(88 homosexual, 95 heterosexual men) living in Seoul, and was analyzed by factor analysis, t-test, correlations and multiple regressions. The result of this study were as follows: 1. Two factors of fashion leadership. were identified: fashion opinion leadership and fashion innovativeness. Four factors of lifestyle were identified: appearance awareness, self-confidence, authoritativeness, and achievement. 2. The result of t-test between homosexual and heterosexual men in clothing behaviors and psychological characteristics, homosexual men showed higher scores in fashion innovativeness, fashion opinion leadership, preference for up-to-date style, and appearance awareness of lifestyle characteristics. 3. From the result of analyzing the effects of psychological characteristics on 4 variables of clothing behaviors, appearance awareness of lifestyle characteristics was found to be the most influential factor for all the clothing behavior variables in both groups.

• Journal of the Korean Home Economics Association
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• v.30 no.2
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• pp.21-34
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• 1992

The purpose of this study was to investigate (1) the effect of a masculine-feminine image in women's blouse·skirt on the perception of the wearer's occupational characteristics and suitability of the clothing for certain occupations, and (2) the effect of perceiver's sex, sex-role attitudes, and occupation on the perception formed by the function of clothing cues. The research design of the study consisted of 2(skirt color) × 2(blose color) × 3(masculine-feminine blouse forms) factorial desing of a blouse·skirt set. The experimental materials developed for this study were a set of stimuli and 2 response scales. The stimuli consisted of 12 drawings of woman's clothing made by systematic manipulations of 2 independent variabels (color and form) in drawings of blouse-skirt. The dependent variables were the perceptions of the wearer's occupational characteristics and suitability of the masculine or feminine clothing for certain occupations. Occupational characteristics were measured with a 7-point semantic differential scale composed of 21 bipolar adjectives. Perception of occupational suitability was assessed with 12 items of 5-point Likert type questions. In addition, the Bem Sex-role Inventory was used to assess perceiver's sex-role attitudes. The subjects consisted of 393 men and 389 women, whose occupations were classified as professionals, secondary school teachers, and white-collar workers. The data were analyzed by factor analysis, MANOVA, ANOVA, Mean and S.D. Three factors emerged to account for the perception of occupational characteristics. These factors were given the titles of (1) activity, (2) potency, and (3) evaluation factors. The activity factor was the largest, including 9 adjectives and accounting for 33.3% of the variance in blouse-skirt. On the blouse-skirt set, the form of the blouse had an effect on activity and evaluation for both sexes, while the color of the skirt had an effect on evaluation for both sexes as well as on potency for men. Strong effect of color and form on blouse·skirt were seen in perception of occupational suitability for the occupations of attorney(masculine) and secretary(feminine). On suitability for secondary school teaching occupations, the effects of color and form of blouse·skirt differed by sex of the subjects. Male subjects determined suitability by the color of the blouse, while female subjects determinied suitability on the basis of the form of the blouse. Perceiver's sex-role attitude and occupation partially influenced the perception of the wearer's occupational characteristics and suitability of the clothing for certain occupations.

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.41-42
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• 2003

All of the commercial silkworm races spread to farmhouses are hybrid of first generation, therefore distinction of sex of parent races is essential. But the existing sexual method which distinguish sex by outer sexual characteristics have many problems such as need of skilled worker and excessive efforts for distinction of sex. So more simple and accurate method fur distinction of sex is needed. (omitted)

• Journal of the Ergonomics Society of Korea
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• v.17 no.3
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• pp.91-101
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• 1998

Anthropometric characteristics and considerations of sex differences are essential for the correct design of ergonomic work spaces. This paper is concerned with longitudinal study on the physical growth in the Korean youth. Five hundred and fourty subjects were selected from third year students of high schools, and their records on physical examination during the last twelve years were surveyed by longitudinal method. This study investigated the anthropometric characteristics of physical structure and the shape of physical growth for boys and girls. The result showed that there were significant sex differences in the pattern of physical growth in height.