• Nutrition Research and Practice
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• 제9권2호
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• pp.150-157
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• 2015

BACKGROUND/OBJECTIVES: The purpose of this study was to investigate the overall effects of a tailored Dietary Approaches to Stop Hypertension (DASH) nutritional intervention program which included omega-3 fatty acids supplementation, on dietary self-efficacy, dietary knowledge, and dietary behaviors in Korean elderly women with abdominal obesity. Furthermore, we investigated the effects of the program on metabolic syndrome parameters including the antioxidant capacities in these subjects. SUBJECTS/METHODS: A randomized, controlled trial was conducted for 8 weeks. The experimental group (n = 21) received a weekly tailored nutritional program for 8 weeks and the control group (n = 18) received only one educational session. The clinical survey was conducted before and after the intervention period. RESULTS: After the intervention, dietary self-efficacy (P = 0.023), frequency of fruit intake (P = 0.019), and dietary fiber intake (P = 0.044) were higher in the experimental group than in the control group. The oxidative stress (P < 0.001) was lower in the experimental group than in the control group. Moreover, low density lipoprotein (LDL) cholesterol (P = 0.023) had significantly decreased in the experimental group but not in the control group after the intervention. CONCLUSIONS: The intervention program including omega-3 fatty acid supplementation had a positive effect on dietary self-efficacy, dietary behaviors, and oxidative stress among aged women with abdominal obesity.

• 대한지역사회영양학회지
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• 제13권2호
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• pp.153-163
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• 2008

The objective of this research was to study the differences between urban and rural areas high school students in body image and dietary habits. The number of subjects in Seoul and Kyungkido were 902. Based on self-reported height and weight, there was no significant difference between the urban and rural students. However, the rate of obesity was significantly higher in males, whereas the rate of underweight was significantly higher in females, especially for urban females (p < 0.05). Their ideal body image ratio as skinny or slender-type was 91.6% (urban) and 95.7% (rural) for male category while 100% (urban) and 99.4% (rural) for females. Urban females had a strong preference for a skinny body (p < 0.05). Rural students were more highly interested in weight control than urban students were, but they appeared not to care their health. In addition, they had significantly lower levels of weight control knowledge and dietary attitude score (p < 0.001). Subjective assessment of body weight appeared to be more important in terms of body satisfaction, weight control knowledge and dietary attitude than actual measurement of body mass index. Significant test revealed that weight control knowledge was related to dietary attitude (p < 0.01). (p < 0.01).

• 대한지역사회영양학회지
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• 제29권2호
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• pp.114-128
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• 2024

Objectives: The purpose of this study was to investigate the perception of nutrition teachers and the factors influencing their intention toward sustainable dietary education utilizing the theory of planned behavior (TPB). Methods: The self-administered online survey was completed by nutrition teachers in Jeollanam-do, South Korea. A total of 151 valid questionnaires were analyzed. Factor analysis and multiple regressions were employed to test the research model. Results: The study findings demonstrated that all TPB variables significantly influenced the sustainable dietary educational intention, with the degree of influence ranking as follows: external perceived behavioral control (β = 0.417), attitude (β = 0.240), internal perceived behavioral control (β = 0.207), and subjective norms (β = 0.181). For external perceived behavioral control, nutrition teachers and elementary schools exhibited higher levels compared to dietitians and middle/high schools, respectively. The participants in sustainable dietary education training programs exhibited a higher level of internal perceived behavioral control compared to those who did not participate. The highest perception levels were reported for attitude (4.26), followed by subjective norms (4.02), internal perceived behavioral control (3.67), and external perceived behavioral control (3.20). Conclusions: This study affirmed that the TPB variables elucidated the sustainable dietary educational intentions of nutrition teachers. The significant impacts of external and internal perceived behavioral control, attitude, and subjective norms on educational intentions were confirmed. Consequently, proactive support from schools and governments is essential to enhance the facilitating factors and mitigate the barriers toward sustainable dietary education in schools.

• 대한지역사회영양학회지
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• 제7권1호
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• pp.23-31
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• 2002

The purpose of this study was to investigate weight control attempts and related factors among 209 middle school female students in Daejeon. Variables examined were body satisfaction, beliefs regarding weight control, body image, nutrition knowledge, nutritional attitudes, dietary behavior and dietary intake. A cross-sectional survey was employed, and data was analyzed using t-test and chi-square teat (at $\alpha$=0.05). The average height, weight, and body fat (%) of subjects were 160.2cm, 52.4kg, and 25.9%, respectively. Those who attempted weight control were 61.7% of the samples, suggesting that weight control was quite popular among adolescents. Students in the weight control attempt group were more satisfied with their body size (p<0.001), and showed more distorted body image than those in the no weight control attempt group (p<0.001). Most of beliefs regarding weight control were also different in the two groups. The attempt group believed more strongly in the advantages of weight control, and believed less strongly in the harmful effects or difficulties associated with weight control. Although there were no differences in nutrition knowledge in the two groups, nutritional attitudes were slightly more favorable in the attempt group (p<0.01). In contrast, eating behaviors, such as those related to caloric intake (p<0.001), body image (p<0.001), and specific situations (p<0.01) were more desirable in the no-attempt group than in the attempt group. In addition, dietary intake of the attempt group was less adequate than that of the no-attempt group for nutrients such as iron (p<0.01), vitamin A, thiamin, riboflavin, and vitamin C(p<0.05). This study suggests that adolescents who attempt control weight have a more distorted body image and inadequate diet and showed more undesirable eating behaviors. Students should be taught and practice desirable methods of weight control. Educational programs should also include strategies for changing beliefs regarding weight control, as well as modifying diets and eating behaviors.

• Nutrition Research and Practice
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• 제2권1호
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• pp.41-45
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• 2008

The purpose of this study was to analyze the relationships among zinc status, diet quality, glycemic control and self-rated physical activity level of type 2 diabetic patients. Dietary intakes for two non-consecutive days were measured by 24-hour recall method for seventy-six diabetic patients. Fasting blood glucose and HbA1c were measured for the assessment of glycemic control. We evaluated the extent of dietary adequacy by the percentage of subjects with a dietary intake of a nutrient less than the estimated average requirement(EAR), the dietary diversity score(DDS) and the dietary variety score(DVS). Zinc status was assessed from serum levels and urinary excretion. Dietary inadequacy was serious for five nutrients: riboflavin, calcium, thiamin, zinc and vitamin C. Dietary intakes from the meat, fish, and egg food groups and the milk food group were below the recommended level. We found that subjects with high levels of physical activities had significantly higher DVS and serum zinc levels compared to others (p

• 한국식품영양학회지
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• 제32권5호
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• pp.522-529
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• 2019

The purpose of this study was to develop a dietary education program, and to evaluate the effectiveness of the education program for children from low-income families. A total of 242 children (122 education groups and 120 control groups) were run six times a dietary education program from April to December 2018, and a questionnaire was administered before and after the education to evaluate effectiveness. Elementary school students were the most prevalent in the education and the control group. In the education group, the body height and weigh were 137.27 cm and 33.69 kg, respectively, and in the control group the body height and weight were 143.48 cm and 40.64 kg, respectively. The education group showed positive change in dietary self-efficacy and dietary knowledge compared to the control group. In particular, 'I can have meals regularly' (Education Group: 4.00 points from 3.71 points) and 'I can choose fruits instead of cookies candies as snacks (Education Group: 4.01 points from 3.70 points) The score increased after participation in the program. In the change of nutritional and hygiene knowledge of children, the education group scored 3.63 of 10 points before education, but the score significantly increased to 5.70 points after education(p<0.001).

• Animal Bioscience
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• 제35권10호
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• pp.1566-1574
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• 2022

Objective: This study investigated the effects of dietary methyl sulfonyl methane (MSM) and selenium (Se) on the laying performance, egg quality, gut health indicators, egg yolk Se content, and antioxidant markers in laying hens. Methods: One hundred ninety-two 73-wk-old laying hens were randomly divided into four groups with eight replicates of six hens each. Four diets were prepared in a 2×2 factorial arrangement with or without MSM and Se. The trial lasted for 12 wk. Results: There were no interaction effects or main effects (p>0.05) on laying performance and egg quality. However, feed intake increased in Se-fed hens (p = 0.051) and decreased in MSM-fed hens (p = 0.067) compared with that of hens in the control group. Dietary MSM increased (p<0.05) the ileal villus height and villus height:crypt ratio in hens compared with those receiving the non-supplemented control diet. Dietary MSM and Se did not affect the percentage of short-chain fatty acids in the ileal contents. Dietary Se enriched the Se content in egg yolk compared with that of the non-supplemented control diet (p<0.05). Dietary Se increased (p<0.05) glutathione peroxidase levels in the liver and serum samples compared to the control diet. The total antioxidant capacity in the liver increased (p<0.05) in laying hens that were fed MSM-supplemented diets than in hens fed the control diet. Dietary MSM significantly increased the relative superoxide dismutase levels in serum samples (p<0.05). Conclusion: Supplementation with either MSM or Se independently improved the antioxidant capacity of laying hens. Furthermore, dietary Se produced Se-enriched eggs, but this effect was neither additive nor synergistic with dietary MSM.

• 대한지역사회영양학회지
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• 제18권2호
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• pp.101-111
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• 2013

Type 1 diabetes is on the rise worldwide. Although nutrition education for patients with diabetes has become a routine practice, specifics and impacts of such educations need to be more researched. This study examined the status of nutrition knowledge, dietary attitude, and dietary behavior among children and adolescents with type 1 diabetes (9-19 year-old) and explored factors influencing dietary behaviors related to diabetes by applying the Theory of Planned Behavior. Face-to-face interviews, using a pre-tested structured questionnaire, were conducted with 32 participants (11 boys and 21 girls) with type 1 diabetes followed by a diabetes clinic in a university hospital. This study found that the level of nutrition knowledge related to diabetes was generally low at 4 points out of a possible 10, however, the dietary attitude related to diabetes was found to be generally good at 26 points out of a possible 30. Participants were motivated to follow medical staff recommendations the most; however, their family was also important. Perceived behavioral control was low especially for eating-out and portion control. The dietary behavior related to blood glucose control showed low at 13 points out of a possible 20. Regression analysis showed that perceived behavioral control (p < 0.001) was significantly related to the dietary behavior related to blood glucose control. This rare study with children and adolescents with type 1 diabetes showed that nutrition education should include a component to improve perceived behavioral control through high-risk situation management.

• Asian-Australasian Journal of Animal Sciences
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• 제20권11호
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• pp.1754-1760
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• 2007

This study was conducted to determine the effects of dietary glycine betaine on pork quality in different muscle types. A total of 80 female pigs ($Landrace{\times}Yorkshire{\times}Duroc$) were randomly allotted into one of four experimental diet groups. Each group of pigs were fed a commercial diet (Control) with 0.2 g glycine betaine (T1), 0.4 g glycine betaine (T2) and 0.6 g% glycine betaine (T3)/kg for 40 days. pH of belly was significantly higher in the control than dietary glycine betaine groups at 13 days of storage, whereas pH of picnic shoulder and ham were significantly lower in control than glycine betaine groups. At 13 days of storage, redness (a*) of belly was significantly higher in control than dietary glycine betaine groups, whereas picnic shoulder and ham were significantly higher in glycine betaine groups than in the control. Water-holding capacities (WHC) of all muscle samples were significantly higher in the control than glycine betaine groups until 5 days of storage. Sarcomere length was significantly longer in the control than glycine betaine groups. The thiobarbituric acid reactive substances (TBARS) value of belly was much higher than other muscle types at 13 days of storage. In fatty acid composition, dietary glycine betaine increased the ratio of saturated fatty acids (SFA) and decreased unsaturated fatty acids (USFA) in loins.

• 한국식품영양학회지
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• 제20권4호
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• pp.433-439
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• 2007

The purpose of this study was to evaluate the body composition, health status, and dietary behaviors of middle-aged women in a weight control program at a community health center. The study subjects were 66 middle-aged women who lived in Ansan city, and they participated in the program for 24 weeks. Anthropometries, blood pressure, and serum biochemical indices were measured. These measurements were taken both before and after the weight control program, and the data were analyzed using the SPSS 12.0 program. Weight, fat mass, body fat %, and the waist-hip ratio all decreased. According to the decreases in body fat %, blood pressure, serum biochemical indices and dietary behaviors were improved after the weight control program. Thus, this study demonstrated the desirable changes of a weight control program offered at a community health center, for health conditions and physical fitness.