• YAKHAK HOEJI
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• v.58 no.3
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• pp.181-189
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• 2014

The aim of this was to evaluate the effects of Rhus Verniciflua Stoke (RVS) extract powder on the endurance capacity for the forced swimming mice. Thirty mice were divided into 3 groups including negative control, 250 (RVS-250) and 500 (RVS-500) mg/kg RVS extract powder groups for 4-times swimming exercises. The swimming times to exhaustion in RVS-250 and RVS-500 mice were prolonged 1.6- and 2.0-fold at 4 weeks compared with negative control mice, respectively. Blood biochemical parameters for AST, ALT, T-CHO and TG were not significantly different between RVS fed or negative control mice. However, blood concentration of creatinine was significantly increased in RVS-250 mice, but not in RVS-500 mice. During the longer swimming exercise in RVS group, blood glucose and lactate levels were significantly decreased, but free fatty acid not changed. And also LDH levels were significantly decreased in RVS groups compared to negative control mice. Hepatic lipid peroxidation was not affected by RVS, but SOD and catalase activity were significantly increased in RVS groups. Interestingly, the levels of testosterone and free testosterone were significantly increased in RVS groups before swimming exercise, but they were not significantly changed among groups after swimming exercise. The present results suggest that RVS extract powders may enhance swimming exercise performance by recovering the exercise-fatigue via reduction of blood LDH activity and by burning blood glucose as an energy source. These results imply that RVS-produced testosterone may act as an energy buster to enhance physical activity.

• PNF and Movement
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• v.15 no.3
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• pp.381-387
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• 2017

Purpose: Although some studies indicate that the Sorensen test may not be used to examine back muscles such as the erector spinae, alternatives to the back-extension test are rarely suggested. Therefore, the purpose of the present study was to investigate an effective way to stimulate the erector spinae muscles by adding a component of trunk rotation and lateral bending to general back extensions. Methods: A total of 18 healthy, physically active participants performed simple trunk extension, extension with trunk rotation, and extension with lateral bending. Surface electromyography responses of the latissimus dorsi, thoracic, and lumbar levels of the erector spinae; the gluteus maximus; and the biceps femoris muscles were investigated during these 3 conditions of modified back extension tests. Results: The simple trunk extension exercise caused significant increases in activity of the gluteus maximus and biceps femoris muscles as compared to the extension with rotation and lateral bending exercises. The extension with trunk rotation exercise showed significantly greater activation in the thoracic and lumbar levels of the erector spinae and in the latissimus dorsi as compared to the other exercises. The index measuring subjective difficulty was significantly lower in the simple trunk extension exercise as compared to the extension with trunk rotation and extension with lateral bending exercises. Conclusion: The present study suggests that extension with trunk rotation has the advantage of stimulating the para-spinal muscles, while simple trunk extension may not be adequate to selectively simulate the para-spinal muscles but may be appropriate for examining global trunk extensors.

• Journal of Preventive Medicine and Public Health
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• v.26 no.3 s.43
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• pp.412-429
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• 1993

For the purpose of promotion of mental health in the rural elderly, the author surveyed 558 elderlies aged 60 years or more, and assessed the prevalence rates of depression and cognitive impairment by using self-rating depression scale of Zung (SDS) and the Korean version of mini-mental state examination (MMSEK). Also the association between depression or cognitive function and socio-environmental factors were investigated. The major findings were as follows ; 1. The prevalence rates of severe depression and cognitive impairment were 20.9% and 14.9% in all the elderly of both sexes, respectively. 2. The rates of depression and cognitive impairment increased with increasing age in both sex groups. The mean scores of SDS increased and the mean scores of MMSEK decreased significantly among them (p<0.01). 3. Those being female, widows or widowers, and those having low levels of physical activity, showed significantly high the mean scores of depression and had significantly low the mean scores of cognitive impairment (p<0.01). 4. The depression scores relating to decreased libido, confusion, psychomotor retardation, hopelessness and indecisiveness were relatively high in both sexes. 5. All the items of mini-mental state examination were significantly correlated with depression. 6. In stepwise multiple regression analysis on depression, MMSEK, level of physical activity, chronic disease, marital status and family income were selected as highly correlated variables, and the $R^2$-value for these variables was 33.7%. 7. In stepwise multiple regression analysis on cognitive function, level of physical activity, age, depression, sex and marital status were selected as highly correlated variables, and the $R^2$-value for these variables was 62.6%. The depression and cognitive impairment of the elderly were positively correlated with nearly all sociodemographic variables.

• The Journal of the Convergence on Culture Technology
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• v.10 no.2
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• pp.349-356
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• 2024

By 2025, South Korea is expected to enter an ultra-aged society with the elderly comprising 20.6% of the population. We measured changes in health status before and after by the use of a "Cognition-Emotion Enhancement Chatbot Integrated Product" among Baby Boomer generation women. Fifty participants, proficient in smart device usage and willing to provide data, were selected from health communities in Seoul. After excluding some applicants, 43 Baby Boomer women were analyzed. Results revealed significant differences in post-chatbot use physical activity (43.5.21 ± 1310.39 MET) and depression levels (6.84 ± 3.53). Correlation between the two variables was not statistically significant. The findings suggest specific effects of the chatbot on physical activity and depression, emphasizing the need for future research with diverse health indicators.

• Biomolecules & Therapeutics
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• v.23 no.3
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• pp.233-237
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• 2015

Shikonin, a natural flavonoid found in the roots of Lithospermum erythrorhizon, has been shown to possess many biological functions. The present study was undertaken to investigate the influence of shikonin on vascular smooth muscle contractility and to determine the mechanism involved. Denuded aortic rings from male rats were used and isometric contractions were recorded and combined with molecular experiments. Shikonin significantly relaxed fluoride-, thromboxane $A_2$- or phorbol ester-induced vascular contraction suggesting as a possible anti-hypertensive on the agonist-induced vascular contraction regardless of endothelial nitric oxide synthesis. Furthermore, shikonin significantly inhibited fluoride-induced increases in pMYPT1 levels and phorbol ester-induced increases in pERK1/2 levels suggesting the mechanism involving the inhibition of Rho-kinase activity and the subsequent phosphorylation of MYPT1 and the inhibition of MEK activity and the subsequent phosphorylation of ERK1/2. This study provides evidence regarding the mechanism underlying the relaxation effect of shikonin on agonist-induced vascular contraction regardless of endothelial function.

• Women's Health Nursing
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• v.7 no.4
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• pp.473-485
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• 2001

This cross-sectional design was to identify the age at menopause of Korean women and the levels of bothersome menopausal symptoms. In addition, examining relationships between the levels of bothersome menopausal symptoms and sociodemographic factors, body mass index, menopause-related factors, and life-style behavior factors including smoking, alcohol use, physical activity, and diet was done. Two thousand eight hundred seven naturally postmenopausal women aged between 41-65 years were recruited by self-selection from 7 metropolitans and 6 provinces in Korea from Dec. 20, 1998 to April 30, 1999. The age at menopause of Korean women was 49.2 years(mean) and 50.0 years (median). The menopausal age of Korean women has slightly increased compared to a previous study. Based on the demographic factors, residential area and socioeconomic status were associated with the bothersome levels of climacteric symptoms. In the case of the life-style behaviors analysis, only alcohol use and a preference for wheat were associated with the bothersome levels of climacteric symptoms, especially physical symptoms.

• Korean Journal of Adult Nursing
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• v.22 no.6
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• pp.561-569
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• 2010

Purpose: The purpose of this study was to identify the factors related to depression of elderly patients in geriatric hospitals. Methods: The subjects were 195 elderly patients who met the inclusion criteria of scores more than 18 on the K-MMSE score and no reported mental disease. The data were collected from February 20 to March 20, 2009. The research instruments utilized in this study were depression (GDSSF-K), activities of daily living and self esteem (RSES), social support, life satisfaction. Data were analyzed Pearson correlation and Multiple Stepwise Regression using SPSS 15.0. Results: Depression score were negatively correlation with ADL, social support, life satisfaction and self-esteem. Among the factors studied related to depression, life satisfaction had highest explanatory power of 36.5% and it was followed by physical health status and activity of daily living. These explained 43.7% of the depression. Conclusion: The mean GDSSF-K 8.94, which indicates the higher than middle levels of depression. The findings suggest that it is important to develop educational programs to increase life satisfaction, physical health status and activity of daily living. Nursing interventions, including volunteer activities, health promotion program, and sports program could be useful in enhancing these factors.

• Journal of the Korean Society of Tobacco Science
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• v.22 no.1
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• pp.45-50
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• 2000

In order to improve the sowing practice, pelleted seeds of tobacco NC 82(Nicotiana tobacco L.) were manufactured in use of binders at the different levels of viscosity, and their physical properties according to pellet size and biological activity in seed germination were investigated while storage time elapsed. Proper range of the binder viscosity for the pellet formation was 20.3-37.2 m.pas. At the high level of viscosity(45.7 m.pas) took longer time to form the pellet and pelleting was not easy. The high binder viscosity and large pellet size revealed higher level in hardness of the pelleted tobacco seeds, which caused the longer splitting time of pellets in water. High level of binder viscosity(37.2 m.pas) in pelleted seeds led to decrease the biological activity of tobacco seed germination by the storage at 4 t over 30 days. But at the level of 20.3m.pas in binder viscosity, the germination of pelleted seeds was little affected by the long storage time to 120 days.

• Journal of Community Nutrition
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• v.6 no.3
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• pp.141-145
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• 2004

The purpose of this study was to explore the relationship between life style and metabolic syndrome. The cross-sectional survey was conducted in Pingliang community in Shanghai in Jan 2003. The data was collected by questionnaire, and the results were analyzed by SPSS. It was found that the prevalence of Metabolic Syndrome (MS) was $13.4\%$ in the community, and the body mass index (BMI), waist-to-hip ratio (WHR), systolic blood pressure (SBP), diastolic blood pressure (DBP), serum triglyceride (TG), total cholesterol(TC), low density lipoprotein-cholesterol (LDL-C), and fast plasma glucose (FPG) in MS group were higher than that in non-MS group. Logistic regression analysis indicated that BMI and WHR were positively correlated to the prevalence of MS, and physical activity was negatively correlated to the prevalence of MS. People with higher education levels (${\geq}10y$) had lower BMI, SBP, DBP, LDL-C and FPG. The prevalence of MS in the higher education level group was significantly lower than that of the lower education level group. These results suggested that BMI, WHR and physical activity were important factors of MS, and education background played an important role in the occurrence of MS. Therefore, it is very important to build a healthy life style for preventing and controlling the incidence and developing of MS.

• Child Health Nursing Research
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• v.27 no.4
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• pp.309-316
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• 2021

Purpose: This study aimed to comprehensively explore the associations of socioeconomic status, parenting style, and grit with children's health behaviors. Methods: This was a cross-sectional study of 1,040 parents and their children using data from the 2018 Korean Children's Panel Survey. Socioeconomic status was measured in terms of household income and subjective socioeconomic status. Parenting style and grit and were measured using 62 and 8 items, respectively. Health behaviors were measured by assessing healthy eating habits, physical activity, and sedentary behavior. Results: Higher household income (β=.07, p=.018) and high maternal levels of an authoritative parenting style (β=.20, p<.001) were associated with higher compliance with healthy eating habits among children. Higher grit was associated with a higher number of weekly physical activity days (β=.08, p=.028) and sedentary behavior for <2 hours (odds ratio [OR]=1.04, 95% confidence interval [CI]=1.01-1.07) in children. A maternal permissive parenting style was associated with sedentary behavior for >2 hours on weekdays (OR=0.43, 95% CI=0.27-0.69). Conclusion: We suggest that when planning interventions to improve children's health behavior, it is essential to adopt a multifaceted approach that avoids practicing a maternal permissive parenting style, promotes an authoritative parenting style, and incorporates strategies to increase children's grit.