• 보건교육건강증진학회지
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• 제29권2호
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• pp.33-45
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• 2012

Objectives: Many female college students today control their lifestyle not for the purpose to promote their health but to maintain slender figures. The purpose of this study was to explore and describe the lifestyle of female college students from their own perspectives. Methods: Data was collected through interviews of 25 female students and was analyzed by using Colaizzi's descriptive phenomenology(1978). The phenomenon of interest was described, followed by collecting participants' descriptions of the phenomenon and extracting concepts from significant statements. These concepts were then organized into thematic clusters, followed by exhaustive descriptions into which data was applied to extract the final categories. Results: The results were deduced into 226 re-statements, 38 constructed meanings, 23 themes, 11 theme clusters, and 5 categories. The five categories include 'Increased interest in physical health,' 'Selective dietary patterns influenced by lifestyle,' 'Lifestyle formed by social adaptation,' 'Health complications caused by self-body images,' 'Engages in healthy dietary behavior'. Conclusion: This study described the experiences of female college students' lifestyles after completing a course in health promotion. These findings have important implications on health education for college students which should be considered in developing health education programs in preparation for adult years of life.

• 동아시아식생활학회지
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• 제19권2호
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• pp.278-286
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• 2009

Restaurants have two strategic levers for revenue management: duration control and demand-based pricing. Reducing dining times, especially during peak periods, can add considerable revenue for restaurants. Managing meal duration, however, can be far more complex than manipulating the price. This paper examines dining duration expectations for restaurants types(Family, Korean, Quick service restaurant), customers characteristics(gender, age, occupation, meal period, visiting frequency, dining occasion, dining companions) using an a adaptation of a price sensitivity measurement tool, naming it 'Time Sensitivity measurement tool' or TSM. The TSM is then used to derive the optimal time points, and the range of acceptable times. The results demonstrate that there is a relatively wide spread of acceptable dining duration times in family restaurant. Furthermore, the optimal time points was shorter than the mean expected dining times, which suggests that many restaurants may be able to shorten dining duration without compromising customer satisfaction. The paper explores whether demographic and dining variables have an impact on time preferences, and finds whether gender, age, meal periods, visiting frequency, and dining companion effects are significant. Specifically, women in their thirties tended to prefer a significantly longer dining times for dinner.

• 한국가금학회지
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• 제22권4호
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• pp.193-202
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• 1995

This study was carried out to investigate the effects of diverse dietary Ca levels and to determine whether bone mineral metabolism is influenced by the arnount of dietary Ca when given a choice of diets containing various levels of Ca. Forty Hy-line brown laying hens housed in separate cages were fed self-selected Ca diets. Birds were allowed a 7-day adaptation period followed by an 8-day collection period. Feed and water were available for ad libitum consumption. Eggs and excreta were collected at 6-h intervals during the day for mineral analysis. The Ca contents in excreta and retained Ca in the body on egg forming day were proportional to the amount of daily Ca intake. The retained Ca in the body were 0.97 g in control and 1.24~1.74 g in self-selected groups, respectively. Daily Ca contents (%) in tibial cortex were not consistent with feeding time intervals. The Ca content in tibial medulla in control group was lower than those of self-selected feeding groups(P<.05). The medullary Ca content in all treatment groups increased from 10:00 to 16:00 in a day. Ca content in plasma was low between 10:00 and 16:00 and was high between 22:00 and 04:00 in the following day.

• Journal of Nutrition and Health
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• 제49권3호
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• pp.179-188
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• 2016

본 연구는 광주광역시에 거주하는 결혼이주여성 92명을 대상으로 하여 사회경제적 특징과 건강, 식생활 실태를 조사하여 결혼이주 여성의 식생활과 이에 영향을 미치는 요인을 분석하기 위해 수행되었다. 본 조사에 응한 결혼이주여성의 평균 연령은 31.3세, 한국에서의 평균 거주기간은 5.5년이었으며, 출신국은 베트남 56%, 중국 26%, 필리핀 12%, 기타 국가 12% 등이었다. 가장 많이 앓고 있는 질병은 소화기계 질환, 빈혈, 신경계 질환 순이었고, 만성 성인병 유병률은 낮은 편이었다. 조사대상자의 체위를 살펴보면, 현재 평균 체중은 54 kg으로서, 한국으로 이주할 때 체중과 비교하면 평균 3.8 kg 증가하였으며, BMI $25kg/m^2$를 기준으로 비만한 조사대상자는 17%였다. 식품을 구입할 때 가장 중요하게 생각하는 것은 영양적 가치, 건강, 식품에 대한 기호도 순으로 건강에 관심이 높았으며, 식품에 대한 정보는 인터넷 37.0%, 가족 28.3%, TV 또는 라디오 27.2% 순으로 스마트폰 사용이 일반화되어 인터넷을 통한 정보습득이 가장 많았다. Mini dietary assessment로 판정한 식습관점수는 5점 만점 기준에 3.45이었으며, 유제품 섭취, 단백질 섭취, 규칙적 식사, 골고루 섭취하기 등에서 점수가 낮은 경향을 나타냈으나, 지방이 많은 음식이나 동물성 지방, 튀긴 음식, 당이나 탄산음료도 적게 섭취하였다. 조사대상자의 식습관 변화정도를 살펴보면, 한국으로 이주 후 식습관이 많이 변했다고 응답한 조사대상자는 33.7%였으며, 식습관 변화 내용으로는 식품섭취 증가와 관련되었으며, 특히 과일과 채소의 섭취가 증가하였다고 응답하였다. 조사대상자의 거주 기간이 BMI, 허리둘레와 유의적으로 양의 상관관계 있었으며, 거주 기간별로 비만, 질병 유병, 식습관 변화 정도를 살펴본 결과, 유의적인 차이는 없었으나, 거주기간이 5년 이상인 그룹이 5년 미만인 그룹에 비해 식습관이 많이 변하고 비만율이 증가하였으나 질병은 감소하는 경향을 나타냈다. 본 연구 결과에서는 거주기간과 질병 유병률이 역의 관계가 있는 것으로 보고되었으나, 이는 본 조사대상자의 한국 평균 거주기간이 비교적 짧아 한국 문화에 대한 적응단계가 이행단계와 관계되는 것으로 생각된다. 결혼이주 여성의 식생활 적응 및 바람직한 식습관 형성은 결혼이주 여성 뿐 만 아니라 이들이 속하고 책임지고 있는 다문화 가정의 건강에도 중요한 영향을 미칠 것으로 사료되어 결혼이주 여성에 대한 장기적이고 다양한 연구와 교육이 필요할 것이다.

• Asian-Australasian Journal of Animal Sciences
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• 제25권11호
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• pp.1611-1616
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• 2012

The aim of the study was to evaluate the effect of sodium nitrate consumption on egg quality and quantity, and some blood parameters of native breeder hens of West Azerbaijan province. One hundred native hens were used from wk 25 to 32 of age. These birds were divided into two groups. One group was fed the control diet (CD) but the other fed the same diet supplemented with 4.2 g/kg sodium nitrate (ND). After 2 wks of adaptation, eggs were collected daily and egg mass and egg production were measured weekly for five weeks. To assess the egg quality parameters, two eggs from each replicate pen were collected for three consecutive days each week. At the end of experimental period (wk 32 of age), blood samples of 5 birds per replicate were collected from the wing vein into anticoagulant tubes. Dietary sodium nitrate didn't affect the egg production, shell stiffness, shell thickness and Haugh unit (p>0.05) but it decreased the both egg production and egg mass during the last three weeks (wks 30, 31 and 32) (p<0.05). Furthermore, a treatment effect was observed for yolk colour (p<0.05). Both the egg production and egg mass were increased over time (p<0.05). No significant treatment${\times}$time interaction was observed for egg weight, egg production and egg mass (p>0.05). No effect of time or treatment${\times}$time were observed for shell stiffness (p>0.05). Over time, shell thickness was decreased while Haugh unit increased (p<0.05). None of the blood TP and TG or the activity of ALT, AST and LDH enzymes were affected by dietary consumption of sodium nitrate at wk 32 of age (p>0.05). Sodium nitrite decreased both the TAC and TC at wk 32 of age (p<0.001). It was concluded that the lower body antioxidant capacity of nitrate fed birds resulted in the lower performance (egg weight, egg production and egg mass).

• Asian-Australasian Journal of Animal Sciences
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• 제26권12호
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• pp.1726-1731
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• 2013

The effects of different dietary electrolyte balance (DEB) on growth performance, nitrogen (N) metabolism and some blood biochemical parameters were investigated in 2 to 3 months old growing rabbits. A total of 150 growing rabbits of 2 months age were randomly divided into five groups according to average body weight, with 30 rabbits in each group. The DEB levels of the five experimental diets were -154, -3.16, +201, +347, and +500 meq/kg of dry matter (DM), respectively. There was a 7-d adaptation period and a 23-d experimental period. The results showed that the DEB levels had a quadratic affect on the average daily feed intake (ADFI) (p<0.001). The greatest ADFI was achieved when the DEB level was +201 meq/kg DM. Fecal N (FN) content linearly decreased (0.047), while digestible N (DN), retained N (RN), efficiency of intake N converted into digestible N (DN/IN) and the efficiency of intake N converted into retained N (RN/IN) linearly increased with the DEB increase (0.020, 0.004, 0.021, and 0.049, respectively). Serum phosphorus (P) ion content linearly increased with the DEB increase (p = 0.036). The DEB had a quadratic relationship with serum anion gap (AG) (p = 0.002) and serum parathyroid hormone (PTH) content (p = 0.016). The DEB levels quadratically affected base excess (BE) in the plasma (p<0.001). In conclusion, the DEB unaffected growth performance but affected feed intake, N metabolism and some blood biochemical parameters of growing rabbits.

• Asian-Australasian Journal of Animal Sciences
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• 제18권4호
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• pp.545-551
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• 2005

A feeding trial was conducted to determine whether dietary vitamin C (200 mg/kg) and vitamin E (250 mg/kg) prevent any drops in egg shell quality under heat stress in broiler breeder hens. One hundred and sixty molted Ross broiler breeders were housed randomly in an individual cage at 83 weeks of age. Four dietary treatments with forty hens and four replications per treatment were control (no additional vitamins), vitamin C-, or vitamin E-supplemented and combined supplementation of the two vitamins. After a tenday-adaptation period at 25$^{\circ}C$, the ambient temperature was kept at 32$^{\circ}C$ for a three-week-testing period. Egg production dropped dramatically over week but it did not show a significant change among treatments (p<0.05). However, egg quality parameters such as egg weight, specific gravity, shell thickness, SWUSA, puncture force and shell breaking strength from the birds fed the diet with the combined vitamins C and E were significantly improved over those of the control group during the heat stress period (p<0.05). The hens fed the vitamin C diet improved tibia breaking strength (37.16 kg), statistically higher than the birds fed the control and the vitamin E diets (p<0.05). The hens fed the control diet showed higher serum corticosterone levels, a mean of 5.97 ng/ml, than those of the other treatments (p<0.05). The heat stress resulted in elevated heterophils and decreased lymphocytes in serum, increasing the H/L ratios for all the treatments. However, the increases in H/L ratios were alleviated by feeding the diets containing vitamin C alone or together with vitamin E, although there were no significant differences in the ratio between the two groups (p<0.05). In conclusion, vitamins C (200 mg/kg) and/or E (250 mg/kg) supplemented to the diets for broiler breeder hens could prevent drops in egg shell quality and tibia bone strength under highly stressful environmental temperatures.

• 한국축산시설환경학회지
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• 제3권2호
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• pp.97-104
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• 1997

This research was carried out to determine the effect of dietary calcium(Ca) levels(low : 0.29, medium : 0.65 and high : 1.07%) on the digestibility, excretion and retention of nitrogen(N) phosphorus (P) in pigs fed diets supplemented with phytase(750U/kg). Twelve growing-finishing pigs(average body weight: 35kg) were divided into 3 groups and these pigs were reared in metabolism cage. After 10 days adaptation period, N and P balance experiments were carried out for 4 days. The results were summarized as follows ; 1. The High-Ca group was lower than the others in digestibility of P(Low-Ca and Medium-Ca group). 2. The amount of daily excretion of urinary N were 19.6g in Low-Ca group and 16.7g in high-Ca group. The High-Ca group was the lowest(22.71%/d) in the total N excretion. 3. The High-Ca group was the highest and the Low-Ca group the lowest in fecal P excretion. The urinary P excretions per day were 1.90g in Low-Ca group and 0.04g in High-Ca group. The medium-Ca group showed the lowest total P excretion(4.57g/d). 4. The N retention of the High-Ca group(20.50g) was greater than that of the Low-Ca group and Medium-Ca(5.02)g was the highest and the Low-Ca groups(3.92g) was the lowest in the P retention. These results indicate that dietary Ca level was an important factor influencing N and P utilization in pigs.

• Asian-Australasian Journal of Animal Sciences
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• 제27권2호
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• pp.161-168
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• 2014

This study aimed to investigate dietary concentrate:forage ratios (C:F) and undegraded dietary protein (UDP) on nitrogen balance and urinary excretion of purine derivatives (PD) in lambs. Four Dorper${\times}$thin-tailed Han crossbred castrated lambs with $62.3{\pm}1.9$ kg body weight at 10 months of age were randomly assigned to four dietary treatments in a $2{\times}2$ factorial arrangement of two levels of C:F (40:60 and 60:40) and two levels of UDP (35% and 50% of CP), according to a complete $4{\times}4$ Latin-square design. Each experimental period lasted for 19 d. After a 7-d adaptation period, lambs were moved into individual metabolism crates for 12 d including 7 d of adaption and 5 d of metabolism trial. During the metabolism trial, total urine was collected for 24 h and spot urine samples were also collected at different times. Urinary PD was measured using a colorimetric method and creatinine was measured using an automated analyzer. Intake of dry matter (DM) (p<0.01) and organic matter (OM) (p<0.01) increased as the level of UDP decreased. Fecal N was not affected by dietary treatment (p>0.05) while urinary N increased as the level of UDP decreased (p<0.05), but decreased as dietary C:F increased (p<0.05). Nitrogen retention increased as dietary C:F increased (p<0.05). As dietary C:F increased, urinary excretion of PD increased (p<0.05), but was not affected by dietary UDP (p>0.05) or interaction between dietary treatments (p>0.05). Daily excretion of creatinine was not affected by dietary treatments (p<0.05), with an average value of $0.334{\times}0.005$ mmol/kg $BW^{0.75}$. A linear correlation was found between total PD excretion and PDC index ($R^2$ = 0.93). Concentrations of creatinine and PDC index in spot urine were unaffected by sampling time (p>0.05) and a good correlation was found between the PDC index (average value of three times) of spot urine and daily excretion of PD ($R^2$ = 0.88). These results suggest that for animals fed ad libitum, the PDC index in spot urine is effective to predict daily excretion of PD. In order to improve the accuracy of the spot sampling technique, an appropriate lag phase between the time of feeding and sampling should be determined so that the sampling time can coincide with the peak concentration of PD in the urine.

• Journal of Nutrition and Health
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• 제48권3호
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• pp.228-235
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• 2015

본 연구는 만 15~19세 남자 고등학생 902명을 대상으로 식행동, 간식 섭취, 식환경, 생활 습관에 대해 설문 조사를 실시하였고, 비만 판정을 위해 신장과 체중을 측정하여 식행동 패턴에 따른 간식 섭취 및 기타 요인과 비만과의 연관성을 분석하였다. 1) 청소년 식생활 지침의 항목을 이용하여 식행동을 평가한 결과 대상자들은 3가지 패턴으로 분류되었다. 식생활과 생활 습관 모두 건강한 패턴과 식생활과 생활 습관 면에서 건강한 요소와 비건강한 요소가 혼재되어있는 혼합 패턴, 그리고 마지막으로 식생활과 생활 습관이 전반적으로 바람직하지 않은 비건강 패턴이었다. 2) 각 패턴 별로 간식 섭취가 차이를 보였는데, 건강한 패턴은 과일, 우유, 호상요구르트의 섭취 빈도가 높았고, 혼합 패턴은 과일이나 호상요구르트 섭취 빈도가 높은 반면 라면, 아이스크림, 탄산음료, 사탕 섭취 빈도도 같이 높았으며, 비건강 패턴은 과일, 우유, 호상요구르트의 섭취 빈도가 다른 두 패턴에 비해 가장 낮은 반면 라면, 단 간식, 탄산음료 등의 간식 섭취 빈도는 가장 높았다. 3) 식환경을 포함한 생활 습관 요인도 패턴마다 상이했는데, 가정 내 식품 비치율은 각 식품 섭취 빈도와 유사하게 건강한 패턴과 혼합 패턴의 가정 내 과일 비치율이 비건강 패턴에 비해 높았다. 또한 혼합 패턴이 건강기능성 식품이나 식이 보충제 복용 비율이 가장 높았고, 비건강 패턴은 식사 속도, 수면 시간은 짧고 스크린 시간이 하루 2시간 이상인 비율이 가장 높았다. 4) 패턴 별 비만과의 연관성은 건강한 패턴을 기준으로 하였을 때, 혼합 패턴의 교차비는 1.11이었으나 유의하지 않았고, 비건강 패턴의 교차비는 1.88로 유의적이었다. 이상의 결과로부터 청소년의 식행동 패턴에 따라 간식 섭취 뿐 아니라 식습관, 생활 습관 요인이 차이를 보였으며 이러한 요인들이 비만과의 연관성에도 영향을 주었다. 식행동은 식품 섭취나 생활 습관 요인들과 서로 상호작용을 하므로 앞으로 청소년 비만 예방 및 관리를 위한 전략으로 적절한 영양 교육과 함께 식행동과 생활 습관을 함께 개선해 나갈 수 있는 방안을 모색하는 것이 필요하다.