• 말소리와 음성과학
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• 제2권4호
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• pp.245-252
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• 2010

Korea does not have a certain criteria on the respiratory ability and phonation of the normal aged, and also has no clear standard to examine the boundaries of geriatric diseases. This study analyzed the characteristics in respiration and phonation of the aged in normal healthy elderly from diverse angles with different variables. Thirty-three participants in total, seven males and eight females in the age group 55-64 participated in the study. Seven males and eleven females in the age group 65-74 were selected for the respiration and phonation experiments, and 10 different variables such as FVC, $FEV_1$, $FEV_1$/FVC, MPT, MFR, Psub, f0, jitter, shimmer and NHR were comparatively analyzed for each group of different age and gender. To see the difference in respiration and phonation by age and gender, the study conducted a two-way ANOVA. First, from the result of the analysis on respiratory ability, FVC of male appeared to be significantly greater than female. In both age groups of 55-64 and 65-74, male displayed greater FVC than female did. Second, as for $FEV_1$, $FEV_1$/FVC, the age group of 55-64 showed greater values than the values measured in the age group of 65-74. Third, MFR showed a significant difference by gender. In both age groups, male showed significantly higher MFR than female. Fourth, for different gender, a significant difference in MFR was observed. In both age groups of 55-64 and 65-74, male exhibited higher MFR than female. This study has a clinical implication in that it analyzed the criteria on respiration and phonation in normal healthy elderly according to gender and age. The normal aged showed a difference in their respiratory and phonatory functions by age and gender, it was closely related to the decline of pulmonary function due to the physical aging and the weak respiration coming from weakness of respiratory muscles. Also, the physical differences in height, weight, and the muscles in laryngeal and respiratory system between males and females had an influence on the performance. These results from this study might be a helpful guideline for the clinical criterion in the future.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 추계학술대회 논문요약집
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• pp.24-24
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• 2003

For the elderly, achieving a close-to-normal ambulation is important for activities of daily life. Recent researches of SE(Silver Engineering) restoring physical ability would help the elderly by developing the advanced gait assisting devices and orthoses. For the applications using the advanced technologies, the gait characteristics of the elderly must be understood. However, a few studies were performed to investigate the physiological or pathological gaits. The purpose of this study is to provide the gait analysis data and also to investigate relationships between alignment of the lower limb, foot progression angle and knee joint moments in the healthy elderly. By participating a total of 20 healthy elderly persons in this study, the following facts were found: 1) Cadence showed 114.8 steps/min, gait speed showed 1.05 m/s, time per a stride showed 1.06 sec, time per a step showed 0.53 sec, single-supporting phase was 0.41 sec, double-supporting phase was 0.24 sec, stride length was 1.04m, Step length was 0.56m; 2) The maximum knee flexion angle through swing phase showed left 46.82$^{\circ}$, right 40.19$^{\circ}$ and the maximum knee extension angle showed left -1.32$^{\circ}$, right 2.01$^{\circ}$. Knee varus showed left 26.90$^{\circ}$, right 30.93$^{\circ}$; 3) The maximum knee flexion moment showed left 0.363 Nm/kg, right 0.464 Nm/kg, The maximum knee extension moment showed left 0.389 Nm/kg, right 0.463 Nm/kg. The maximum knee adduction moment showed left 0.332 Nm/kg, right 0.379 Nm/kg. The maximum internal rotational moment showed left 0.13 Nm/kg, right 0.140 Nm/kg; 4) The subjects who had varus alignment of the lower extremity had statistically higher in knee adduction moment in mid stance phase; and 5) The subjects who had large foot progression angle had statistically lower in knee adduction moment in late stance phase.

• The Journal of Korean Physical Therapy
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• 제16권1호
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• pp.183-207
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• 2004

The purpose of this study was to describe and compare the temporo-spatial gait characteristics of healthy elderly people with those osteoarthritis patients. 100 patients reported knee osteoarthritis, diagnosed at the hospital or clinic located in Daegu and Kyungbuk province and 100 normal elderly subjects were participated in this study. Temporal and spatial parameters of gait were analysed for using the computerized GAITRite system. The system integrates specific components of locomotions to provide a single, numerical representation of gait, the Functional Ambulation Performance score. Differences in gait characteristics between the two groups were examined using a correlated t-test and Pearson Correlation(p<.05). Significant differences were observed between the groups for temporal parameters(step time, double support time, stance phase, mean velocity) and spatial parameters(step length, step/extremity ratio)(p<.05). Also there was difference in the functional ambulation performance score between normal elderly subjects and knee osteoarthritis patients(p<.05). Consequently, it may help detect the abnormal gait pattern indicated the main problem in degenerative knee osteoarthritis patients as well as provide data analysing the pathokinesiologic components by comparing normal elderly.

• Journal of Nutrition and Health
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• 제33권4호
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• pp.454-463
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• 2000

The purpose of this study was to assess the biochemical nutritional status of the long-lived elderly. The subjects of the study were 148 elderly people of age over 85 years living in Kyungpook Sung-Ju area who have no problem in daily living. The anthropometric measurement and biochemical assessment of the blood sample were carried out. The subject group for this study was composed of 25.9% males and 74.1% females, the average age being 87 years old. The mean Body Mass Index(BMI) of the male and female subjects were 20.7 and 21.2 respectively. The average body fat amounts of the male and female were 21.4% and 29.8% respectively, and the average waist/hip ratios were 0.9 and 0.7 respectively. The mean levels of the total blood protein and albumin of the subjects were in the normal ranges. The mean levels of serum cholesterol and triglyceride were 167.9mg /dL and 123.9mg/dL respectively. The mean levels of the subjects below normal range of hemoglobin were 63.5%. Serum levels of antioxidant nutrients were very poor. The mean levels of serum lipid peroxidation products were 3.3nmol/mL. BMI and WHR were positively correlated with the serum cholesterol levels. The resuts showed that the long-lived elderly had good nutritional status except for antioxidant nutrients status. In addition antioxidant supplement for long-lived elderly may be effective to maintain healthy life in later years.

• The Journal of Korean Physical Therapy
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• 제29권6호
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• pp.303-306
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• 2017

Purpose: Gait variability is defined as the intrinsic fluctuations which occur during continuous gait cycles. Increased gait variability is closely associated with increased fall risk in older adults. This study investigated the influence of attention-demanding tasks on gait variability in elderly healthy adults. Methods: We recruited 15 healthy elderly adults in this study. All participants performed two cognitive tasks: a subtraction dual-task (SDT) and working memory dual-task (WMDT) during gait plus one normal gait. Using the $LEGSys^+$ system, we measured the coefficient of variation (CV %=$100{\times}$[standard deviation/mean]) for participants' stride time, stride length, and stride velocity. Results: SDT gait showed significant increment of stride time variability compared with usual gait (p<0.05), however, stride length and velocity variability did not difference between SDT gait and usual gait (p>0.05). WMDT gait showed significant increment of stride time and velocity variability compared with usual gait (p<0.05). In addition, stride time variability during WMDT gait also significantly increased compared with SDT gait (p<0.05). Conclusion: We reported that SDT and WMDT gait can induce the increment of the gait variability in elderly adults. We assume that attention demanding task based on working memory has the most influence on the interference between cognitive and gait function. Understanding the changes during dual task gait in older ages would be helpful for physical intervention strategies and improved risk assessment.

• 전기학회논문지
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• 제59권3호
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• pp.674-677
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• 2010

The purpose of this study was to analyze bradykinesia of forearm movement in patients with Parkinson's disease (PD) as compared to those of normal subjects. A gyrosensor was selected for the measurement of forearm movement, because it can provide angular velocity signal which is free from the gravitational artifact and also because it can be conveniently used during clinical test of bradykinesia. Forty PD patients (age: $65.7\pm11.1$ yrs, H&Y stage:$2.3\pm0.5$), 14 age-matched elderly subjects ($65\pm3.9$ yrs) and 17 healthy young subjects ($24\pm2.1$ yrs) participated in this study. Angular velocity during forearm movement of pronation/supination was measured in both arms. Suggested quantitative measures of bradykinesia were root-mean-squared (RMS) angular velocity, RMS angle, peak power and total power which were derived from the angular velocity. ANOVA showed that all measures were significantly different among three groups (p<0.001). Subsequent post-hoc test revealed that all measures in PD patients were significantly smaller than in healthy elderly and healthy young subjects (p<0.05). This results suggest that PD patients can be differentiated from normal subjects using suggested measures.

• 한국융합학회논문지
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• 제11권6호
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• pp.203-208
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• 2020

이 연구는 첫째, 경도인지장애(MCI)가 언어 기억 및 시공간 기억 등 특정 기억의 저하와 관련이 있는지를 파악하고, 둘째, 정상 노인으로부터 MCI를 감별하는 데 예측력이 우수한 지표를 탐색하였다. 표준화 된 기억검사를 수행한 189명(정상 노인 103 명, MCI 86 명)을 분석하였다. 언어 기억은 Seoul Verbal Learning Test를 이용하였고. 시공간 기억은 Rey Complex Figure Test를 이용해서 측정하였다. 다항 로지스틱 회귀모형을 이용하여 기억 검사의 예측력을 분석한 결과, 언어 기억과 시공간 기억은 정상 노인으로부터 MCI를 감별하는 데 예측 성능이 유의미하였다. 반면, 각 기억 검사의 수행결과를 포함하여 모든 혼란변수를 보정했을 때, 언어 기억의 즉시 회상만 정상 노인으로부터 MCI를 감별하는 데 예측력이 유의미하였으며, 시공간 기억의 즉시 회상은 예측력이 유의미하지 않았다. 이 결과는 MCI를 선별할 때 언어 기억과 시공간 기억의 지연 회상, 언어 기억의 즉시 회상이 MCI의 기억능력을 감별할 수 있는 최상의 조합임을 시사한다.

• 한국간호교육학회지
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• 제20권2호
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• pp.321-331
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• 2014

Purpose: The purpose of this study was to investigate the effects of case management service for hypertensive elderly patients through the customized visiting home health care program. Method: Non-equivalent control group pretest-posttest design was employed. Data were collected from April 2007 to January 2009. Among a total of fifty subjects, 25 subjects were belonged to the case management group and the others were belonged to the general management group. Results: 1) In experimental group, significant increasing rate of number of people within normal blood pressure by time, but no significant increasing rate of number of people within normal blood neutral fat, total cholesterol, HDL, & LDL. 2) In experimental group, the score of knowledge about disease and healthy life practice were increased on 8 week period but decreased on follow up period. Number of people within normal blood HDL and mean score of healthy life practice were significantly higher than control group on follow up period. Conclusion: Case management service was effective on controlling blood pressure but partly effective on blood lipid, knowledge about disease, and healthy life practice in hypertensive patients. Further study is needed to conduct a periodic re-evaluation of the effect of case management and to verify an optimal interval to provide the case management service.

• International Journal of Contents
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• 제8권3호
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• pp.26-33
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• 2012

The animal naming test (ANT) is known to be influenced not only by age, gender, and education but only by ethnicity, culture, and language. Thus, population-specific norm considering these variables needs to be developed for Korean-speaking elderly. We evaluated 185 healthy elderly people with five measures. Education was the single statistically independent correlate of the total number of words ($R^2$ = .312, p = .038). After adjusting for education, there was slightly significant negative correlation (r = -.215, p = .049) between age and total number of words. Mean number of words produced was $13.71{\pm}3.09$. The production frequency was negatively correlated with the typicality rating (r = -0.41, p < .05). The concrete and exact scoring rule could be set up in the comparison of naming performance between a normal and patient with neuro-linguistic disorder and its data could be utilized in a differential diagnosis for patients with neurological disorders.

• 한국식품영양과학회지
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• 제28권4호
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• pp.924-933
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• 1999

This study investigated the effects of vitamin E supplementation on immune responses and antioxidant status in healthy Korean old and young women. Blood samples were obtained from 15 healthy old women (over 60 years old) and from 15 healthy young women(20 years old) before and 4 weeks after vitamin E( tocopherol acetate) supplementation(400IU/day). Daily nutrient intakes were calculated, and plasma vitamin E concentration, numbers and percentages of white blood cell and their subpopulation, percentages of lymphocytes and subpopulation, NK cell percentages, plasma immunoglobulin A, G, M and C3 concentration, proliferation of PMN with mitogen were measured. Also plasma TBARS concentration and radical scavenger activity of erythrocytes were investigated. Plasma vitamin E concentrations were significantly increased after supplementation in both groups. In elderly women, vitamin E supplementation restored the per centages of neutrophils, lymphocytes, and eosinophils which had been out of normal ranges before supple mentation. And after vitamin E supplementation, helper T cell percentages significantly increased in elderly. Plasma immunoglobulin and complement C3 concentrations were not affected by vitamin E supplementation in both groups. PMN proliferations with mitogen were significantly lower in old women than in young women, and there was no effect of vitamin E supplementation. Vitamin E supplementation significantly decreased plasma TBARS concentrations in old and young women. RSA of erythrocytes was increased in both groups, but the statistical significant was only found in young women group. Therefore, these results suggest that the moderate vitamin E supplementation in old women improves immune responses, especially nonspecific immunity and cell mediated immunity, via protection of oxidant stress.