• Child Health Nursing Research
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• v.23 no.2
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• pp.249-257
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• 2017

Purpose: The aim of this study was to assess the body weight perception of adolescents and to investigate the difference between mental health and weight control behavior according to body weight perception. Methods: Study data on 12-18 years old adolescents with normal BMI was obtained from the 6th Korea National Health and Nutrition Examination Survey (2013-2015). Rao-Scott Chi-square test and ANOVA were used for the analysis. Results: The percentage of adolescents with a misperception of body weight was 43.3%, and their subjective health status (p=.013), stress perception (p=.001), and depression (p=.001) were worse than for adolescents who had the correct perception of their body weight. The percentage of adolescents who were trying to lose weight while perceiving their body weight as normal was 36.9%. Body weight control behavior had significant differences according to dietary intake (frequency of eating dinner (p=.015)), energy intake (p=.004), and carbohydrate intake (p<.001), but there was no significant difference according to exercise. Conclusion: Parents, school teachers, and nurses should make efforts to ensure that Korean adolescents perceive their body weight correctly, and prevent unhealthy weight control behaviors.

• Asian-Australasian Journal of Animal Sciences
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• v.10 no.2
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• pp.245-250
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• 1997

Highly significant correlation (p < 0.001) was found between body weight and chest circumference of the local Katjang and cross-bred (local Katjang ♀ ${\times}$ German Fawn ♂ bucks under study. Increase in body length, chest circumference, depth of chest and height at withers (p < 0.001) reflected significantly the increase in body weight of the bucks. At the same age the cross-breds were bigger than the indigenous breed. No significant correlation was detected between body weight and scrotal circumference, or the latter with sperm counts in both buck types under study. However, the fluid portion of the semen increased in acidity and volume, the latter being significant (P < 0.01) in the local Katjangs, with increase in scrotal circumference. Although the effects of body condition on buck libido of both groups were not significant, the reaction time taken to mount the teaser females were significantly diminished (p < 0.001) with better body condition, at least in the local Katjangs. The reaction time gad an inverse, though not necessarily significant, relationship with semen characteristics such as volume, pH (in local Katjangs, p < 0.05), concentration, color (in cross-breds, p < 0.05), agglutination and mass movements in both phenotypes.

• Korean Journal of Occupational Health Nursing
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• v.19 no.2
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• pp.205-216
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• 2010

Purpose: The purpose of this study was to explore relationship among pain, body image and satisfaction in hand-injured workers. Methods: Using a sample of 96 out-patient workers with hand injuries, pain, body image and satisfaction were measured by VAS and Modified Jung Keum-hee's Tennesee Self Concept Scale. Repeated measured ANOVA and a Bonferroni correction for multiple statistical testing during post hoc analyses were conducted to evaluate relationship among pain, body image and satisfaction in hand-injured workers. Result: Functional satisfaction(r=.46, p<.001) and appearance satisfaction(r=.55, p<.001) significantly increased by treatment satisfaction. Functional satisfaction(r=.35, p=.001) and appearance satisfaction(r=.31, p=.002) increased by body image. But treatment satisfaction(r=-.20, p=.049), functional satisfaction (r=-.34, p=.001) and appearance satisfaction (r=-.39, p<.001) significantly decreased by pain. Conclusion: Poor pain management was related to bad body image and treatment satisfaction. Therefore, interventions targeting at pain management are needed for hand-injured workers.

• ETRI Journal
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• v.38 no.2
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• pp.244-251
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• 2016

In this paper, we investigate the electrical characteristics of two trench-gate-type super-barrier rectifiers (TSBRs) under different p-body implantation conditions (low and high). Also, design considerations for the TSBRs are discussed in this paper. The TSBRs' electrical properties depend strongly on their respective p-body implantation conditions. In the case of the TSBR with a low p-body implantation condition, it exhibits MOSFET-like properties, such as a low forward voltage ($V_F$) drop, high reverse leakage current, and a low peak reverse recovery current owing to a majority carrier operation. However, in the case of the TSBR with a high p-body implantation condition, it exhibits pn junction diode.like properties, such as a high $V_F$, low reverse leakage current, and high peak reverse recovery current owing to a minority carrier operation. As a result, the TSBR with a low p-body implantation condition is capable of operating as a MOSFET, and the TSBR with a high p-body implantation condition is capable of operating as either a pn junction diode or a MOSFET, but not both at the same time.

• Korean Journal of Exercise Nutrition
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• v.23 no.4
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• pp.36-42
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• 2019

[Purpose] The study aimed to determine the effects of bone-specific physical activity on body composition, bone mineral density (BMD), and health-related physical fitness in middle-aged women. [Methods] One hundred eighty-six middle-aged women aged 31-49 years participated in this study. The subjects were divided into tertile groups according to the level of physical activity (low-score group, n=62; middle-score group, n=62; high-score group, n=62). Bone-specific physical activity participation was assessed using the bone-specific physical activity questionnaire. Body composition and BMD were measured using dual-energy X-ray absorptiometry. Health-related physical fitness test included isometric muscle strength (grip strength), muscular endurance (sit-ups), flexibility (sit and reach), and cardiorespiratory fitness (maximal oxygen uptake [VO_2max]). [Results] The high-score group had a significantly higher fat-free mass (p=.045, partial eta-squared value[η_p²]=.033) than the middle- and low-score groups, whereas the high-score group had significantly lower percent body fat (p=.005, η_p²=.056) than the other two groups. Whole-body BMD (p=.034, η_p²=.036) and lumbar BMD (p=.003, η_p²=.060) were significantly higher in the high-score group than in the low-score group. The high-score group performed significantly better for grip strength (p=.0001, η_p²=.101), sit-ups (p=.0001, η_p²=.108), and VO_2max (p=.0001, η_p²=.092) than the other two groups. [Conclusion] The present study suggests that bone-specific physical activity could be useful in improving body composition, BMD, and health-related physical fitness in middle-aged women, significantly enhancing their BMD and health conditions.

• Research in Community and Public Health Nursing
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• v.13 no.1
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• pp.115-123
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• 2002

Purpose: The purpose of this study was to identify the obesity index, body shape satisfaction and body shape esteem according to weight perception in elementary school students. Method: The data were collected by using a questionnaire and physical examination records. The subjects were comprised of 669 children, all 12-years old, obtained from five (5) different elementary schools located in Jechoen. Data were analyzed with frequency, percentages, Chi-square test, ANOVA using the SPSS program. Results: 12.5% of male students, 11.1% of female students perceived themselves obese. There were significant differences in obesity index according to weight perception in male students ($x^2$=140.47, p= .000), in female students ($x^2$=130.99, p= .000). The percentages corresponding to normal body weight were highest with students who thought themselves thin in male students and self-perceived normal in female students. But in female students, 23.3% of self-perceived thin students, 37.8% of students who thought themselves obese corresponded to normal body weight actually. There were significant differences in body shape satisfaction according to weight perception in male students($x^2$=140.47, p= .000), and in female students($x^2$=130.99, p= .000). The percentages of body shape satisfaction were highest with students who thought themselves normal in male students while and in female students, the students who thought themselves thin were highest. There were significant differences in body shape esteem according to weight perception for male students (F=17.67, p= .000), and in female students (F=13.95, p= .000). The mean scores of body shape esteem were highest with students who thought themselves normal in male students and thin in female students. The students who thought themselves obese were lowest. There were significant differences in weight perception according to father's body shape ($x^2$=13.72, p= .008) in male students and father's educational level ($x^2$=14.90, p= .021), mother's educational level ($x^2$=17.73, p= .007), mother's body shape ($x^2$=13.07, p= .011) in female students.

• Asian-Australasian Journal of Animal Sciences
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• v.29 no.6
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• pp.768-774
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• 2016

The present study investigated the impact of parity 1 gilt body weight during late gestation (d 109) on subsequent reproductive performance of sows and performance of suckling pigs. A total of 2,404 farrowing records over 6 parities were divided into six groups on the basis of body weight (190, 200, 210, 220, 230, and 240 kg) at d 109 of gestation of 585 gilts. Significant effects (p<0.05) of body weight on sow retention rate was noticed, with the 210 kg group having the lowest culling rate and highest total number of piglets born alive over the 6 parities. With increase of body weight, a linear increase (p<0.05) in losses of body weight and backfat during the lactation period of parity 1 and a linear decrease (p<0.05) in backfat loss for parities 4 and 6 were found. Compared with light sows, heavy sows had higher (p<0.05) litter weight at birth for parities 1 and 2 and at weaning in parity 1. Sow weaning-to-estrus interval of sows was not influenced (p>0.05) by body weight. In conclusion, maintaining optimal body weight during gestation would be beneficial to sows and suckling piglets.

• Journal of Nutrition and Health
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• v.28 no.9
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• pp.893-903
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• 1995

This study was attempted to estimate seasonal variations of physical activity level, energy balance & body composition of 38 rural women, aged 31 to 67yrs in three seasons ; farming season(June), harvesting season(October), nonfarming season(February) Energy intake, energy expenditure and body composition were assessed using questionnaire, daily activity diary & bioelectrical impedance. The type of activities & the period of the spent on each activity were changed significantly with the seasons. Daily mean duration(min) of farming activity was significantly higher in June & October than in February(p<0.005) & daily mean energy expenditure for farming activity was significantly high in June & low inFebruary (p<0.005). Daily mean energy expenditure was 2892.9㎉ in June, 2487.4㎉ in October and 2130.9㎉ in February and changed significantly in three seasons(p<0.005). Daily mean energy intake was significantly higher in June(=1950.3㎉) & October (=1946.9㎉) than in February(=1423.3㎉)(p<0.005). According to RDA for koreans, the level of physical activity fell into exceptional activity category in June, heavy in October, moderate in February. Mean energy balance was negative in all seasons ; 0.682 in June, 0.812 in October and 0.698 in February. In three seasons mean body weight, mean obesity rate and mean body mass index(BMI) were not changed significantly. But there were significant seasonal variations in body fat(%) & lean body mass(LBM)(%). The mean percentage of body fat(%) was within normal range(24.44-24.79%) & the mean percentage of lean body mass(LBM)(%) representing long term physical activity was significantly higher in June(75.56%) & October(75.21%) & October (75.21%) than in February(72.75%)(p<0.05).

• Women's Health Nursing
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• v.9 no.2
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• pp.152-160
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• 2003

The purpose of this study is to determine the effect of a health management program on body composition(body weight, body fat mass, body fat ratio, lean body mass, abdominal fat ratio), self-efficacy and health promotion behavior in middle-aged women. This 6-week long program containing exercise and health education was developed by researchers. The study design was one group pretest-posttest design. Data for the study was collected from August 1 to September 15, 2002. The participants consisted of 15 middle - aged women living in the community. The collected data was analyzed using Wilcoxon Matched - Signed - Ranks Test by SPSS/WIN program The results are as follows : 1. There was a significant difference in body composition at week 6 compared to week 1. The body weight, body fat mass and body fat ratio significantly decreased(Z= -2.533, p=. 011 ; Z= -2.023, p= .043; Z= -2.023, p= .043). But the lean body mass significantly increased(Z= -2.226, p= .026). 2.There was a significant improvement in self-efficacy at week 6 compared to week 1(Z= -3.434, p= .001). 3.There was a significant improvement in health promotion behavior at week 6 compared to week 1(Z = -3.305, p= .001). In conclusion, health management program promoting self - efficacy for middle-aged women was effective in improving health promotion behavior. Further study with a longer follow up period is necessary in order to test the long term effect of the program.

• Child Health Nursing Research
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• v.26 no.1
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• pp.121-129
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• 2020

Purpose: This study aimed to examine the influence of social media affinity on eating attitudes and body dissatisfaction among adolescents in the Philippines. Methods: The participants were 114 junior high school students enrolled in 7th to 10th grade in Cavite Province, Philippines. The collected data were analyzed in SPSS, using descriptive statistics, the independent t-test, one-way analysis of variance, Pearson correlation coefficients, and stepwise multiple linear regression. Results: The factors affecting eating attitudes were body dissatisfaction (β=-.47, p<.001), social media affinity (β=.33, p<.001) and grade (10th grade) (β=-.28, p<.001), and the factors influencing body dissatisfaction were eating attitudes (β=-.65, p<.001) and social media affinity (β=.17, p=.041). Conclusion: In order to promote healthy eating attitudes and to improve body satisfaction among Philippine adolescents, educational strategies tailored to social media users will be needed.