• Physical Therapy Rehabilitation Science
• /
• 제4권1호
• /
• pp.38-43
• /
• 2015

Objective: To investigate and compare the size of the rectus femoris (RF), tibialis anterior (TA), and medial gastrocnemius (GMM) using ultrasound (US) imaging in young, elderly, and very elderly groups. Design: Cross sectional study. Methods: This study consisted of 25 young (age 20 years), 24 elderly (age 65-74 years), and 25 very elderly (age 75-90 years) people with no physical dysfunctions. The cross sectional area (CSAs) of the RF and muscle thickness of the TA and GMM were measured at rest and during contraction using an US system. Results: The CSA of the RF and thickness of the TA and GMM were significantly smaller in the elderly and very elderly groups than in the young group (p<0.05). There was a significant difference of the CSA of the RF at rest and during contraction between elderly and very elderly group (p<0.05). In the comparison of the TA and GMM thickness between elderly and very elderly groups, there were no significant differences except for the TA thickness during contraction. There was a significant difference in the percentage change in RF CSA among the three groups (p<0.05). Conclusions: Our results revealed loss of muscle mass in the RF, TA, and GMM in elderly and very elderly people (${\geq}65$ years old). In particular, the greatest age-related decline in muscle mass was observed for the RF. Furthermore, the CSA of the RF declined with aging in the very elderly groups (${\geq}75$ years old).

• 한국응용과학기술학회지
• /
• 제4권1호
• /
• pp.23-36
• /
• 1987

Plasma levels of lipids were observed in vegetarians and non-vegetarians in order compare the values between the two groups with different dietary habits, and among different age groups. All 162 vegetarians and 95 non-vegetarians were selected for this study. In detail, male vegetarians subjects were devided into three groups according to their ages, 20's, 30's and 40's. And three control groups were also selected at matching basis. Two groups each were selected for female subjects in their 20's and 40's. All ten groups were adopted and the lipids levels were compared appropriately. Dietary habits of vegetarians were shown to be fairly strict. They consumed almost no animal foods and depended largely upon plant foods with emphasis on unrefined cereals and legumes. on the other hand, non-vegetarians consumed meats, fish egg and milk frequently. Most of plasma lipid levels measured were found to be lower in vegetarians and tended to be higher for the higher age groups of both vegetarians and non-vegetarians. Although the lipids levels of non-vegetarians were higher than the ones for vegetarians, the levels were within optimal range, and it can be concluded in this study that the plasma lipid levels of non-vegetarians under Korean dietary pattern are quite acceptable.

• 대한영양사협회학술지
• /
• 제9권2호
• /
• pp.106-113
• /
• 2003

The purpose of this study was to compare the growth development between age-matched 51 postmenarcheal girls (mean age 153.1$\pm$5.8 month) who were rapidly maturing and 51 premenarcheal girls (mean age 153.1$\pm$5.7 month) who were slowly maturing. Anthropometirc measurements were taken for height, body weight, body fat(%), waist and hip circumferences of subjects. These measurements of menarcheal girls were significantly higher than those of nonmenarcheal girls. There was no significant difference in BMI distribution between two groups. However, 43.2% and 20.0% respectively in the menarcheal and nonmenarcheal girls had body fat levels of 30% or above. There were significant differences in the anthropometric measurements during past 4 years from 3rd grade elementary school to present. The greatest difference between the two groups were the amount and the rate of increased height and body weight from age 9 to 10. Among menarcheal girls, height, body weight, BMI, and Röhrer index were positively related to the onset of menarche. Distinctively, there was a stronger relationship between age at menarche and anthropometric measurements when the girls were 5th grade elementary school children. These findings support that during childhood and puberty, obese girls grow faster and have earlier menarche. Furthermore, the importance of prevention of obesity was recognized in order to accelerate growth of height among the girls by delaying the age of menarche.

• 치과방사선
• /
• 제21권1호
• /
• pp.45-63
• /
• 1991

This comparative study was designed to ascertain whether any differences existed between skeletal class Ⅱ malocclusion (

• Journal of Nutrition and Health
• /
• 제14권4호
• /
• pp.151-161
• /
• 1981

The objective of this study was to compare the electrolytes contents in skeletal muscles of two different groups of rats, one for control fed 20% casein diet, and the other experimental group recovered from 7% casein diet as protein restriction feeding for two weeks at the beginning of this experiment. Two different comparison criteria were used in this study, one for comparison between animals at the same age groups and the other between groups weighing same body weight as the control groups. Food consumption of animals for experimental and control groups were ad libitum. Following measurement and samples were collected: body weight, five different muscles-anterior tibialis (A.T.) extensor digitorium longus (E.D.L.) soleus, plantaris, gastrocnemius-for electrolytes and protein analysis. The experimental groups showed lower body weight than that of control group. Same trend was showen in protein content in five different muscles. Magnesium and potassium content in four muscles except gastrocnemius showed lower and sodium higher in experimental groups than those in control group at fourteenth day, after recovery from protein restriction, electrolytes content change showed differently in four muscles. Magnesium and potassium contents were increased as protein content in diet. Sodium content decreased as one week intake of recovery diet started, thereafter it was rather slowly increased. Phosphorus content in gastrocnemius at the second week in experimental group was slightly lower than that of control group, and it recovered rapider while at the same body weight group it was higher in experimental group.

• 한국사회복지학
• /
• 제68권4호
• /
• pp.5-24
• /
• 2016

본 연구는 연령주의와 연령통합이 각 세대별로 세대갈등인식에 미치는 영향력을 확인하고, 세대갈등을 줄이기 위해 어떠한 노력들이 진행되어야 하는가에 대해 탐색하고자 진행되었다. "한국의 고령화 사회에 대한 인식조사" 자료를 사용하였으며, 총 1,000명의 조사대상자들을 인구 비율에 따른 가중치를 적용한 후 청년층 476명, 중년층 369명, 노년층 155명의 3개의 연령집단으로 구분하였다. 각 집단의 세대갈등인식의 차이, 연령주의 관련 변수와 연령통합 관련 변수가 세대갈등인식에 미치는 영향을 분석하기 위해 ANOVA와 다중회귀분석을 사용하였다. 분석결과, 각 연령집단별로 세대갈등인식에는 차이가 없었으나, 세대갈등인식에 영향을 미치는 요인에는 차이가 있었다. 모든 연령집단에서 연령주의 관련 변수 중 연령차별 심각성 인식이 세대갈등인식에 영향을 미치는 것으로 나타났다. 즉 연령차별을 심각하게 받아들일수록 세대 간 갈등이 높은 것으로 인식하는 것으로 분석되었다. 본 연구는 세대갈등인식이 연령 그 자체에서 기인하는 인식과 편견들로부터 시작될 수 있음에 주목하고 연령주의와 연령통합이 세대갈등인식에 미치는 영향과 관련성을 탐색하였다는 점에서 의의가 있다.

• The Journal of Korean Physical Therapy
• /
• 제33권6호
• /
• pp.265-271
• /
• 2021

Purpose: We aimed to analyze the reliability of the test for choice stepping reaction time (CSRT) under an unstable surface and determine whether there were differences in CSRT between support surface conditions (stable vs. unstable conditions) and between age groups (young adults vs. community-dwelling older adults). Methods: Twenty healthy community-dwelling older adults and twenty young adults performed the stepping task under an unstable condition over two visits. The mean of the two trials measured for each visit was used for the analysis. The test-retest reliability was analyzed using intra-class correlation coefficient (ICC) with a 95% confidence interval, standard error of measurement (SEM), and minimal detectable change (MDC). Differences in CSRT between support surface conditions and age groups were analyzed using the independent t-test with Bonferroni correction. Results: Excellent consistency was observed for ICC >0.90 in both groups. Moreover, the SEM and MDC values of the CSRT in older and young adults were 0.03 and 0.09 and 0.01 and 0.04, respectively. There was a significant difference in the CSRT between the age groups under stable (p<0.001) and unstable conditions (p<0.001). Conclusion: The findings demonstrated that the test for CSRT under an unstable condition had reliable results in both groups. Although older adults demonstrated longer reaction times than younger adults in all surface conditions, increasing the balance control demand by implementing a choice stepping task concomitant with a balance task had no influence on the reaction time in both age groups.

• 대한영양사협회학술지
• /
• 제23권3호
• /
• pp.285-299
• /
• 2017

This study was conducted to compare the perception and fast food usage patterns of adults classified by age in Busan. The survey was conducted from April 15 to June 15, 2017 by questionnaires and the data were analyzed using SPSS 24.0 Overall, 74.1%, 58.1%, 40.7%, 20.3%, 29.7% and 17.9% of individuals in their 20s, 30s, 40s, 50s, 60s and 70s, respectively, consumed fast foods more than once a week. Additionally, 66.0%, 52.5%, 25.7%, 16.0%, 22.9% and 11.7% of individuals in their 20s, 30s, 40s, 50s, 60s, and 70s, respectively, preferred fast foods. There was a significant difference in the basis for choosing menu among the groups, with 'preference' and 'price' being most important to those in their 20s and 30s, on the other hand 'preference' and 'companion' being most important to members of other age groups. As their age increased, individuals spent less money on fast food. Overall, 81.5%, 59.9%, 50.0%, 40.1%, 46.3%, and 28.4% of individuals in their 20s, 30s, 40s, 50s, 60s and 70s thought that fast food was a suitable substitute for a meal. Age affected the substitutability of fast food for a meal (P<0.001). Additionally, the ratio of individuals in their 20s and 30s that skipped breakfast was higher than in other age groups. In addition, age showed a significant positive correlation with obesity and dietary attitude, whereas it showed a negative correlation with nutrition knowledge, use frequency, perception degree and preference. Nutrition knowledge and dietary attitude showed no relationship with preference. These results imply that a nutrition education program should be developed and conducted to induce subjects to manage their dietary habit and develop healthier dietary patterns.

• 농촌계획
• /
• 제21권3호
• /
• pp.85-99
• /
• 2015

This study explores influences of the relationship between social capital and residents' perception in a collective aspects, and also explores the differences of influence between two groups in 10 rural communities. This study conducts regression analysis with residents questionnaires, and analyzes the relationship of influence among the latent factors, and differences between the two groups. As a results, associational network and social trust factors of social capital are identified as the most important factor in the quality of life and residents' attitudes. In addition, the differences in socio-cultural factor of quality of life and residents' attitude between two groups are identified by comparison with the relationship between two groups, although the explanatory power of both groups is not high. To achieve a successful rural tourism based on the result of this study, rural tourism should consider the regional and demographic characteristics, such as age, occupations and education and so on. The major contribution of this study is to confirm that the impact of social capital on the residents' perception would be different by regions in comparison with two groups, and it will be able to provide useful implication for the rural tourism development in the future.

• 한국가족복지학
• /
• 제59호
• /
• pp.27-53
• /
• 2018

본 연구는 가족관련 요인과 고령친화환경 요인이 가족 내 세대교류에 미치는 영향력에 대해 중년층과 고령층을 비교하여 확인하고, 이를 바탕으로 고령화와 함께 심화되는 가족 내 세대 교류 단절에 대한 대안을 제시하고자 이루어졌다. 이를 위하여 한국연구재단 지원사업인 "2014 고령화 사회에 대한 인식 조사"의 자료를 사용하였으며, 그 중 18세 이상의 성인자녀가 있는 45-64세 연구대상자 260명, 65세 이상의 연구대상자 399명을 각각 중년층과 노년층으로 구분하여 분석하였다. 가족관련 요인, 고령친화환경 요인과 두 연령집단의 가족 내 세대 교류와의 관계를 분석하기 위해 t-test와 다중회귀분석을 수행하였다. 연구 결과, 가족관련 요인은 두 연령집단에서 모두 영향력을 보였으나 중년층에서는 친밀감이, 노년층에서는 가족주의가 각각 통계적으로 더 높은 유의미성을 나타냈다. 또한 고령친화요인 중에서는 노년층에서 세대통합에 대한 인식만이 유의미하게 나타났다. 이러한 결과를 바탕으로 가족 내 세대교류 관계의 향상을 위한 함의를 제시하였다.