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코로나 시대의 가정에서 어머니가 지각한 가족건강성이 양육스트레스에 미치는 영향: 사회적 지지의 매개효과를 중심으로
정나나 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.8
본 연구의 목적은 코로나19로 인하여 낮아진 가족건강성의 회복과 모의 긍정적인 양육행동을 위하여 양육스트레스를 낮출 수 있는 기초자료를 제공하는 것이다. 본 연구는 만 3~5세 유아의 어머니 331명의 자료를 분석하였다. 분석결과 첫째, 어머니의 가족건강성은 사회적 지지인 정서적 지지, 물질적 지지, 평가적 지지, 정보적 지지에 모두 유의한 정(+)의 영향을 미쳤다. 둘째, 어머니의 가족건강성은 양육스트레스에 유의한 부(-)의 영향을 미쳤다. 셋째, 어머니 사회적 지지인 정서적 지지, 물질적 지지, 평가적 지지, 정보적 지지는 모두 양육스트레스에 유의한 부(-)의 영향을 미쳤다. 넷째, 어머니의 가족건강성과 양육스트레스의 관계에서 사회적 지지인 물질적 지지, 정서적지지, 정보적 지지, 평가적 지지 모두 유의한 매개효과가 있었다. 따라서 코로나19 가정에서의 어머니 양육스트레스를 낮추기 위해서는 가족건강성을 직접 낮추는 것이 필요할 뿐만 아니라 매개효과를 갖는 사회적지지를 낮추기 위한 노력이 경주되어야 한다. 따라서 가족건강성 증진을 위한 프로그램의 개발 및 개선을 최우선 과제로 삼아 많은 관심을 가질 필요가 있다.
Influence of high fat and different types of carbohydrate diet on energy metabolism in growing mice
정나나,임기원 한국운동영양학회 2019 Physical Activity and Nutrition (Phys Act Nutr) Vol.23 No.3
[Purpose] The purpose of this study was to determine whether different types of carbohydrate diets with or without exercise changes energy metabolism at rest and during exercise. [Methods] To minimize differences in food and energy intake between experimental groups, mice were pair-fed. After 1 week of adaptation, 40 male ICR mice (6 weeks old) were randomly divided into four groups: Sta. (high fat + high starch), Scu. (high fat + high sucrose), StaEX. (high fat + high starch + exercise), and SucEX. (high fat + high sucrose + exercise). StaEX. and ScuEX. groups underwent training by running on a treadmill five times a week. After 10 weeks of training, energy metabolism was measured for 24 h and during a 1 h exercise period. [Results] The final body weight showed no significant difference between the groups. However, the weight of abdominal tissues (epididymal, perirenal, and mesenteric adipose tissue) in training groups was markedly decreased following 10 weeks of training. Results of all energy metabolism (24 h at rest and during 1 h of exercise) showed no significant interactions between diet and exercise. A brief summary of the results of the energy metabolism is that the metabolism related indicators over 24 h were more affected by the dietary pattern than the exercise but during the 1 h of exercise, training had more effect on energy metabolism than diet. [Conclusion] Our findings confirm that: (a) the type of carbohydrates included in the diet influence the metabolic responses over 24 h, (b) training had more effect on energy metabolism than diet during 1 h of exercise, (c) both results; abdominal adipose tissue weight and fat oxidation during exercise are suggestive for a beneficial effect of moderate physical activity on weight maintenance.
Impact of the ketogenic diet on body fat, muscle mass, and exercise performance: a review
정나나 한국운동영양학회 2023 Physical Activity and Nutrition (Phys Act Nutr) Vol.27 No.4
[Purpose] The purpose of this review was to investigate the effects of the ketogenic diet (KD), on body fat, muscle mass, and exercise performance. As the KD is a subject of ongoing debate, we also present the existing evidence regarding its potential benefits in the aforementioned areas of body fat, muscle mass, and exercise performance. [Methods] A literature search was conducted using the keywords “ketogenic diet, low-carbohydrate diet, high-fat diet, body fat, muscle mass, and exercise performance” in PubMed, Web of Science, and Google Scholar. [Results] The KD effectively reduced body fat in the short term and, preserved muscle mass during weight loss, however, its impact on exercise performance remains inconclusive owing to various factors. [Conclusion] While controversial, it is undeniable that the KD has the potential to affect body fat, muscle mass, and exercise performance. Consequently, additional research is required to elucidate the underlying mechanisms across various populations, optimize their implementation, and understand their long-term effects.
The Effect of Cold Temperature and Exercise on BAT and Browning of WAT
정나나,임기원 한국체육학회 2018 International journal of human movement science Vol.12 No.2
The present study aimed to investigate the effects of cold exposure and/or exercise on resting energy metabolism over 24 h and on BAT activity and browning of WAT related gene responses. Forty ICR male mice were divided into four groups: thermoneutrality-untrained (23 ± 1°C in room temperature, n=10), cold-water immersion (24 ± 1°C, n=10), exercise in neutral temperature (34 ± 1°C, n=10), and exercise in cold temperature (24 ± 1°C, n=10). The mice performed swim training (30 min to 60 min, 5 days/week) for 8 weeks. After end of experiment, we confirmed BAT activity and browning of WAT-related gene expression changes in interscapular-BAT and inguinal adipose tissue, and measured resting energy metabolism over 24 h. The results showed that the relative tissue weights of BAT and inguinal fat tissue differed by temperature (p = 0.016, p= 0.001 respectively). The UCP1 mRNA expression in BAT showed a significant effect in the exercised groups (p = 0.038). The sum of the oxygen uptake, only a significant temperature effect (p = 0.040) was observed and the average of the RER showed a significant temperature (p = 0.024) and exercise (p = 0.008) effect. Our data demonstrate that cold exposure and exercise independently induces the gene expression of thermogenic markers and the energy metabolic rate. The relative expression of these markers and the change of the energy metabolism indicators differed across the tissues and experimental treatments. In conclusion, our results suggest that cold exposure and exercise has no synergy effect on thermogenic markers of BAT and beige/brite adipose tissue and energy metabolism over 24h.