Korean journal of community nutrition最新文献

Objectives: This study aimed to evaluate the impact of a 4-week multicomponent intervention combining flash continuous glucose monitoring (flash-CGM), group nutrition education, and personalized nutrition coaching on dietary self-efficacy (DSE) and weight management in healthy university students.

Methods: A total of 27 university students participated in a pre-post intervention study. The intervention included a single 4-hour group-based nutrition education session, flash-CGM usage (FreeStyle Libre; Abbott Diabetes Care), and weekly one-on-one nutrition coaching. Participants wore the CGM device for 28 days (replaced after 14 days), and were guided in using the FoodLens app (DoingLab) for dietary tracking and a mobile app-linked digital scale for weight monitoring. Outcomes measured before and after the intervention included DSE, body mass index (BMI), nutrition quotient (NQ) and glycemic indicators. Statistical analyses included Wilcoxon signed-rank and Mann-Whitney U-tests with significance set at P < 0.05.

Results: There was a significant increase in DSE (P < 0.05), particularly in managing eating behavior under stress and fatigue. A modest but significant decrease in BMI was observed in the overall group (P < 0.05), though changes were not significant in the BMI ≥ 23 kg/m² subgroup. Glycemic indicators showed minimal changes. The overall NQ score improved slightly, with significant increases in fruit intake (P < 0.01) and nutrition label checks (P < 0.05). High satisfaction levels (4.52 ± 0.65 on a 5‑point scale) were reported for device usability and coaching services.

Conclusion: The multicomponent intervention improved DSE, NQ scores, and supported modest weight reduction among university students. The combined effect of CGM, nutrition education, and coaching appears promising; however, further studies are needed to isolate the effects of each component and evaluate long-term outcomes. Trial Registration: Clinical Research Information Service Identifier: KCT0010255.

Trial registration: Clinical Research Information Service Identifier: KCT0010255.

Objectives: This study aimed to analyze dietary factors associated with sleep duration in postmenopausal middle-aged women using data from the Korea National Health and Nutrition Examination Survey (KNHANES), with particular emphasis on the postmenopausal period.

Methods: A total of 3,040 postmenopausal women aged 40-64 years from the 2019-2023 KNHANES were included. Sleep duration was classified into four categories: "appropriate sleep duration" (ASD; 7-9 hours), "short sleep duration" (6-7 hours), "very short sleep duration" (VSSD; < 6 hours), and "long sleep duration" (LSD; > 9 hours). Nutrient and food intake were compared among groups using analysis of covariance. Multinomial logistic and polynomial regression models assessed associations, adjusting for demographic and health covariates.

Results: The VSSD group had higher body mass index and waist circumference than the ASD group, despite lower total energy intake, and also consumed more snack energy and skipped breakfast and dinner more often. This group also had lower intakes of monounsaturated fatty acids and nuts and seeds. In the late menopausal group, greater consumption of cereal grains, fish and shellfish, and beverages was associated with elevated LSD risk. Conversely, higher folate intake in the early menopausal group was inversely associated with VSSD risk. Cholesterol intake was positively associated with LSD risk in both groups. A negative nonlinear association between sleep duration and dietary intake was observed in the early menopausal group when polyunsaturated fatty acid intake exceeded 19.86 g/day and riboflavin intake exceeded 1.76 mg/day. In the late menopausal group, riboflavin intake was strongly correlated with increased LSD risk (odds ratio = 4.776, P = 0.004). Sugar and beverage intake showed a positive linear relationship with sleep duration at average intake levels.

Conclusion: Dietary factors associated with sleep duration differed by postmenopausal period, with specific nutrients and food groups exhibiting variable associations with sleep duration above mean intake levels.

Objectives: In Korea, dietitian licenses began to be issued in 1964, and they have been working to prevent diseases and promote people's health in various fields according to the times. This study was conducted to compare differences in social perception of dietitian over time by collecting online unstructured data and analyzing the frequency and network structure of nutritionist-related keywords after the deployment of nutrition teachers began.

Methods: Using 'dietitian' as a keyword, we collected data from NAVER's web, blogs, and news provided by Textom (2024, The IMC) and refined the data. We investigated the frequency ranking of keywords related to dietitians for each period, revealed the network structure using UCINET6 (Freeman) and Netdraw, and clustered similar concepts among keywords through CONCOR (CONvergence of iterated CORrelations) analysis to cluster-related concepts.

Results: Frequency analysis revealed that during the first period, keywords such as 'School' and 'Education' reflecting the institutionalization of nutrition teachers, were highly ranked. However, by the second period, these terms had dropped out of the top 10. Meanwhile, keywords related to healthcare, such as 'Hospital', consistently remained among the most prominent. In the second period, the rankings of the 'License' and 'University transfer' keywords increased significantly. Centrality analysis showed stronger connectivity between dietitians and keywords such as 'Food', 'School', 'Examination', and 'Nutrition' in the second period compared to the first. CONCOR analysis further demonstrated that the 'Major education' cluster of the first period was differentiated into the 'Major education and qualification' and 'Professional competency certification process' clusters of the second period. In addition, the 'Health and welfare' cluster of the first period was divided into the 'Health and welfare regional service' clusters of the second period.

Conclusion: The results of this study will be used as basic data for identifying social perception and trends in the dietitian profession, further providing a scope for their improvement.

[This corrects the article on p. 40 in vol. 30.].