• Journal of Industrial Convergence
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• v.22 no.2
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• pp.105-117
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• 2024

This is a longitudinal study of drinking older adults aged 65 and older to determine how their social activities and alcohol consumption change over time, and how social activities affect alcohol consumption among drinking older adults. The main findings are as follows First, we found a decrease in social activity and alcohol consumption among the elderly over time, but this was not statistically significant. However, individual differences in the rate of change in social activity and alcohol consumption were found, and the specific factors of these individual differences were examined in the conditional model. The results of the conditional model showed that, for social activity, the higher the initial level of social activity, the older the age, and the lower the initial amount of alcohol consumed by men than women. Next, for the amount of alcohol consumed, the better the health status, the more the amount of alcohol consumed decreased significantly for male elderly than female elderly, smokers than non-smokers, and elderly with and without disabilities. Based on the results of the above analysis, suggestions were made to promote social activities and reduce drinking among the drinking elderly in Korea.

• Journal of the Korean Society of Food Science and Nutrition
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• v.21 no.4
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• pp.334-340
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• 1992

This study was intended to investigated the relationship between habitual physical activity, nutrients intakes and urinary riboflavin excretion of elderly women and to compare riboflavin biochemical status of urban elderly women with rural elderly women. While average daily riboflavin intake of elderly women subjects was below Recommended Dietary Allowances for Koreans, riboflavin biochemical status was adequate in terms of average urinary riboflavin excretion. Urinary riboflavin excretion did not show significant correlation with energy expenditure, physical activity level and riboflavin intake. Nutrients intakes of urban and rural elderly women were not significantly different. However, energy expenditure and physical activity level were significantly higher, urinary riboflavin excretion was significantly lower in rural than in urban elderly women. It is suggested that riboflavin biochemical status was influenced by physical activity.

• Journal of Internet Computing and Services
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• v.16 no.5
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• pp.93-98
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• 2015

IoT (Internet of Things) is recently burgeoning as business applications as well as ICT itself. Among the business applications of IoT, wearable devices are recognized as a leading area of customer devices. This research first identifies customer needs of activity trackers (fitness trackers), as one of representative wearable devices, and mapping the identified needs with the well-known marketing model of marketing mix (4 P's: Product, Price, Promotion, and Place). Survey was applied to university students for identifying current and potential needs for activity trackers. The needs were classified by 4 P's, and according to the results, different from other IT devices, activity trackers has more potential needs. Moreover, reliable distribution channels, offline and company owned shops were preferred, rather than online shopping mall by third parties. The results would provide some valuable implications to not only designers of activity trackers but also business management.

• Journal of Korean Society of Transportation
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• v.21 no.4
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• pp.145-154
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• 2003

Multilevel and Multivariate Structural Equation Mpdel is applied to handle the hierarchical nature of the data and explain complex relationship among socioeconomic factors of individuals and household, activity participation, and travel behavior using Puset Sound Transportation Panel data. From analysis, variations of individual activity participation and travel behavior can be divided into two categories : Within-household variation and Between-households variation. Empirical results show that the interdependency index(p) of variables for household members within a household is between 0.13 and 0.33 indicating high interdependency. These results suggest that Multilevel and Multivariate SEM approach is an appropriate modeling methodology and gives additional information for activity participation and travel behavior. Also most of personal and household characteristics influence on activity participation and travel behavior within a household as well as between households.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.04a
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• pp.706-709
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• 2010

점차 늘어나고 있는 독거노인들의 건강관리를 정보통신 기술을 통하여 시간과 장소 등에 구애 받지않고, 위급 상황이 감지될 경우 즉각적인 조치를 할 수 있는 u-헬스케어 시스템을 설계하였다. 제안한 시스템은 독거노인의 활동량을 분석하고 움직임을 감지하기 위한 기능을 Zigbee와 PIR 센서로 구현하고, 홈 게이트웨이는 임베디드 리눅스 기반 소형 시스템으로 구현하였다. 구현된 시스템을 통해 피보호자의 일일 활동량 및 주간 활동량 정보를 웹브라우저를 통해서 확인하여 위급 상황 발생 시 보호자의 휴대전화로 이러한 정보를 통보하여 구급할 수 있다.

• Journal of Industrial Convergence
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• v.22 no.5
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• pp.79-88
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• 2024

The study aim was to investigate the relationship between adolescents' physical activity and subjective health perceptions and determine whether body mass index (BMI), an obesity-related indicator, had a mediating or moderating effect on this relationship. To achieve the purpose of this study, raw data from the 18th Youth Health Behavior Online Survey (2022) were used, and data from 23,612 people were ultimately selected for the research analysis. A confirmatory factor analysis and structural equation modeling were applied to the data, and bootstrapping techniques were used to verify the mediating effect. To verify the moderating effect, a multigroup analysis of the structural equation model was applied to calculate pairwise parameter comparison values. All statistical significance levels were set at .05. The results of this study follow. First, the greater the amount of physical activity among adolescents, the more positive was the effect on subjective health perception. Second, subjective body type perception had a partial mediating effect on the relationship between physical activity and subjective health perception. Third, subjective body type had a moderating effect on physical activity and subjective health perception. Specifically, people who perceived their subjective body types as average viewed their subjective health more positively when they engaged in more physical activity than those who perceived their body types as slightly or very overweight. In conclusion, preventing obesity and positively changing the subjective health status through sufficient physical activity during adolescence are important.

• Korean Journal of Social Welfare Studies
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• v.42 no.2
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• pp.5-39
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• 2011

The objective of this study is to survey Social Participation of the Elderly's quality of life according to their activity levels and examine the differences by their gender and age. The subjects of this study were elderly aged 60 or older who are living in the metropolitan area and those reportedly participating in various social activities at the time of the survey. A total of 586 cases were used for the analysis. Data were analyzed through multi group analysis using a structural equation model, and AMOS 7.0 was used in statistical processing. The results of this study showed that, first, the quality of life was significantly and positively affected by flow experiences in economic participation, social fellowship participation, and self development participation. Second, the results of multi group analysis on the relations between the social participation level and the quality of life according to gender demonstrated that the there were gender differences on the full path model, and that there were significant differences in relationships between the volume of social fellowship participation and the quality of life between men and women. Third, a similar finding was found for the age group that the paths between flow experiences in economic participation and the quality of life significantly differed by age groups. Based on these findings, implications for theory and practice were discussed.

• Journal of Korean Society of Transportation
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• v.33 no.5
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• pp.449-460
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• 2015

The reliability of air quality evaluation results for green transportation could be improved by applying correct emission factors. Unlike previous studies, which estimated emission factors that focused on vehicles in laboratory experiments, this study investigates emission factors according to road types and time using real driving data. The real driving data was collected using a Portable Activity Monitoring System (PAMS) according to road types and time, which it compared and analyzed fuel consumption from collected data. The result of the study shows that fuel consumption on national highway is 17.33% higher than the fuel consumption on expressway. In addition, the average fuel consumption of peak time is 4.7% higher than that of non-peak time for 22.5km/h. The difference in fuel consumption for road types and time is verified using ANOCOVA and MANOVA. As a result, the hypothesis of this study - that fuel consumption differs according to road types and time, even if the travel speed is the same - has proved valid. It also suggests correction factor of emission factors by using the difference in fuel consumption. It is highly expected that this study can improve the reliability of emissions from mobile pollution sources.

• Journal of agricultural medicine and community health
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• v.39 no.4
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• pp.240-255
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• 2014

Objective: The purpose of this study was to identify the correlates of bone mineral density of Korean adults. Methods: This study was based on the data from the 2010-2011 Korean National Health and Nutrition Examination Survey (KNHANES, 2010~2011) V. Among 8,473 subjects of the survey, who were adults 19 years old or over with bone mineral density data, the current study excluded those whose data include a missing study variable or the response of 'I don't know', and finally analyzed the data of 5,986 subjects (2,692 males and 3,294 females). This study employed the following statistical methods of analysis: t-test, analysis of variance (ANOVA), and hierarchical multivariate linear regression analysis. Results: In multivariate analysis, in the case of men, the significant associated factors in bone mineral density were age, education level, body mass index (BMI), waist circumference, total muscle mass, exercise, and weight control; in the case of women, the significant associated factors in bone mineral density were age, education level, economic activity, BMI, total muscle mass, exercise, weight control. fat intake, uptake female hormone, menopause, and age of menarche. Conclusion: For both sexes, the strongest modifiable factor in influencing bone mineral density was total muscle mass. Therefore, to prevent osteoporosis and promote health, active health education and interventions such as regular exercise for total muscle mass increase should be implemented from an early growth period.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.347-350
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• 2007

An ECG analysis with activity monitoring for the home care of elderly persons or patients, using wireless sensors technology was design and implemented. The changes in heart rate occur before, during, or following behavior such as posture changes, walking and running. Therefore, it is often very important to record heart rate along with posture and behavior, for continuously monitoring a patient's cardiovascular regulatory system during their daily life activity. The ECG and accelerometer data are continuously recorded with a built-in automatic alarm detection system, for giving early alarm signals even if the patient is unconscious or unaware of cardiac arrhythmias. The hardware allows data to be transmitted wirelessly from on-body sensors to a base station attached to server PC using IEEE802.15.4. If any abnormality un at server then the alarm condition sends to the doctor' PDA (Personal Digital Assistant).