• 근관절건강학회지
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• 제16권1호
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• pp.5-12
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• 2009

Purpose: The purpose of this study was to investigate bone mineral density(BMD) and fear of falling and falls efficacy in the middle and old aged women over 50 years. Methods: The subjects consisted of 409 women. One-way ANOVA, Pearson's correlations and multiple regression were used to test the BMD, fear of falling and falls efficacy scale by using SPSSWIN 12.0. The BMD of the calcaneus were measured with peripheral dual energy x-ray absorptiometry(DEXA). Results: The average age was 63 years old and the average T-score was -3.21 in patient with osteoporosis, -1.72 with osteopenia, and .13 with normal. There were significant differences in the status of the BMD according to age(p=.000), height(p=.000), weight(p=.000), married status(p=.000), age of menarche(p=.002), and menopause(p=.002). The fear of falling was related with falls efficacy(r=-.247, p=.01), BMD(r=-.337, p=.01). Falls efficacy($\beta$=-.21, p=.000)and BMD($\beta$=-.26, p=.000) were predicting variables of fear of falling. The model explained 13% of the variance in fear of falling(F=27.38, p=.000). Conclusion: Fear of falling and falls efficacy were related with the bone mineral density. Falls efficacy and BMD may be useful for the predicting fear of falling for women in middle and old age. Further studies with assessment of fall-related risk-factors and a longitudinal study are necessary to assess with falls efficacy, and BMD with age.

• 대한물리의학회지
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• 제15권1호
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• pp.33-42
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• 2020

PURPOSE: This study examined the effects of a whole body vibration-exercise program on the muscle strength, balance, and falling efficacy of super-aged women. METHODS: Thirty participants, who are over 75 years of age, were recruited. They were assigned randomly to an experimental group (n=15), which received whole body vibration exercise, and a control group (n=15), which received an exercise program that did not include vibration. The interventions lasted for four weeks, three times a day, and 25 minutes per session. To compare the effects of the intervention, a 30-second chair stand test (CST), Korean version of Berg balance scale (K-BBS), functional reach test (FRT), timed up and go test (TUG), and Korean version of the falls efficacy scale (K-FES) was used. RESULTS: The experimental group showed a significant increase (p.<05) before and after the intervention in the chair stand test (CST), Korean version of the Berg balance scale (K-BBS), functional reach test (FRT), timed up-and-go (TUG), and Korean version of the fall efficacy scale (K-FES). Compared to the control group, the experiment group showed a more significant increase (p.<05) in the CST, K-BBS, and FRT. CONCLUSION: A whole body vibration exercise program could be suggested as an effective intervention method for muscle and balance strengthening for super-aged women.

• 대한간호학회지
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• 제43권5호
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• pp.613-625
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• 2013

Purpose: This study was conducted to determine the effects of a fall prevention program on falls, physical function, psychological function, and home environmental safety in frail elders living at home in rural communities. Methods: The design of this study was a nonequivalent control group pre posttest design. The study was conducted from July to November, 2012 with 30 participants in the experimental group and 30 in the control group. Participants were registered at the public health center of E County. The prevention program on falls consisted of laughter therapy, exercise, foot care and education. The program was provided once a week for 8 weeks and each session lasted 80 minutes. Results: The risk score for falls and depression in the experimental group decreased significantly compared with scores for the control group. Compliance with prevention behavior related to falls, knowledge score on falls, safety scores of home environment, physical balance, muscle strength of lower extremities, and self-efficacy for fall prevention significantly increased in the experimental group compared with the control group. Conclusion: These results suggest that the prevention program on falls is effective for the prevention of falls in frail elders living at home.

• Geomechanics and Engineering
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• 제22권5호
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• pp.441-448
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• 2020

This paper presents a study on the undrained shear strength (s_u) of various sands treated with a biopolymer by employing an extensive series of laboratory fall-cone penetration values covered a range of about 15 mm to 25 mm. In the tests, two sizes (0.15 mm-0.30 mm, and 1.0 mm-2.0 mm) and shapes (rounded, angular) of sand grains, Xanthan gum (XG), and distilled water were used. The XG biopolymer in 0.0%, 1.0%, 2.0%, and 3.0% by dry weight were mixed separately with four different sands, and water. The tests results obtained at the same water content revealed an increase in the su values at different levels with an increase in the XG content. Treating the sands with the XG biopolymer addition was concluded to have a greater efficacy on finer and more angular grains than coarser and more rounded grains in the samples. Overall, the present study indicates that different amount of the XG biopolymer has an important potential to be utilized for increasing the s_u values of samples with various size/shape of sand grains and water content.

• 한국산학기술학회논문지
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• 제21권2호
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• pp.345-352
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• 2020

본 논문은 장애 노인에게 오타고 운동 프로그램이 낙상감소에 미치는 영향과 신체기능과 자신감 회복의 효과를 확인하기 위해 시도되었다. 연구대상은 총 30명으로, 두 그룹으로 할당하여, 실험군 17명, 대조군 13명이었다. 오타고 운동군에게 오타고 운동 프로그램을 12주간 주 2회 각 50분씩 시행하였다. 측정도구는 하지근력, 균형, 유연성과 낙상효능감 변수는 오타고 운동 전과 12주간 오타고 운동 중재 후에 낙상효능감, 낙상횟수와 신체적 기능 변화를 측정하였다. 자료 분석은 일반적 특징은 기술통계로 분석하였고, 두 그룹간의 분석은 독립 T 검정을 하였고, 두 그룹내 분석은 대응 T 검정를 하였다. 연구결과 신체적 기능 변화에서 하지근력의 변화는 통계적으로 유의하였고(p< .01), 대조군은 하지근력이 감소하였으나, 통계적으로 유의하지는 않았다. 정적균형의 변화는 실험군이 유의하게 증가하였고, 대조군은 유의한 감소를 나타내었다. 유연성의 변화는 실험군에서 유의한 증가를 보였고, 대조군은 유의하게 감소하였다. 동적 균형의 변화는 실험군에서 유의한 증진을 나타내었고, 대조군의 동적 균형은 유의한 저하를 나타내었다. 낙상효능감의 변화에서 실험군은 약간의 향상을 나타내었고, 대조군은 유의한 저하를 나타내었다. 본 연구 결과 오타고 운동 프로그램이 장애노인 낙상예방에 대한 신체적기능과 낙상효능감을 증진시켜 긍정적 변화를 가져왔다는 것이 입증되었다.

• Journal of Biosystems Engineering
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• 제21권1호
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• pp.10-20
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• 1996

관개방제 기술의 변수 및 효력예측을 위한 컴퓨터 시뮬레이션 프로그램이 유화/산화액적의 부착율, 유충의 추계적 난보운동 및 무작위 농약흡수 이론을 이용하여 개발되었다. 시뮬레이션 결과는 밤나방 유충, Spodaptera frugiperda (J.E. Smith) (Lepidoptera : Noctuidae)을 이용한 방제효력 실험결과와 비교하였다. 이론치와 실험치는 서로 일치되었다. 방제율은 농약유효성분량이 증가함에 따라 증가하였으며 크로포(chlorpyrifos) 약제의 표준 권고량인 670g[AI]/ha에서 완전방제가 예상되었다. 유화액적(emulsion)은 상대적으로 직경이 큰 산화액적(dispersion) 보다 작물잎 표면에 부착이 어려워 낮은 방제율을 나타내었다. 액적직경이 방제효력에 미치는 영향은 목화작물에 대하여 낮은 약제량에서 뚜렷하게 나타났고, 그 영향은 약제량이 증가할수록 목화 및 옥수수 모두에서 저하되었다. 엽형계수는 작물의 엽상구조에 따른 액적의 부착 및 계류에 미치는 영향을 의미한다. 고찰된 관계방제기술의 영향요소에 대한 이해는 농약사용의 감소 및 효력의 증가에 중요한 역할을 한다.

• 한국산학기술학회논문지
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• 제16권3호
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• pp.1904-1919
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• 2015

본 연구는 낙상예방운동 프로그램을 적용 후 효과를 검증하고자 수행되었다. J시 A읍 두 보건진료소의 65세 이상 노인 52명 노인을 대상으로 2014년 6월1일부터 7월14일까지 시행되었다. 대상자는 실험군 31명, 대조군 21명으로 무작위로 분류하였다. 실험군은 주 2회, 6주간 낙상예방운동 프로그램을 실시하였고, 대조군 21명은 교육만 실시하였다. 연구결과 신체적 기능의 TUG에서 두 그룹 간에 유의한 차이를 보였다(p=.032). 정신적 기능의 낙상두려움, 낙상효능감에서는 통계적으로 유의하지 않았다. 하지근육의 초음파 측정은 7항목(RF CSA Contraction, RF DIS Resting, TA Thickness Contraction, TA P-angle Contraction, GCM Thickness Resting, GCM Thickness Contraction, GCM P-angle Contraction)에서 그룹 간 통계적으로 유의한 차이가 있었다(P<.05). 결론적으로 본 프로그램은 낙상예방에 매우 효과적이다.

• 대한물리의학회지
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• 제12권4호
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• pp.61-71
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• 2017

PURPOSE: The purpose of the present study was to investigate the effects of whole body vibration exercise on balance, muscle strength and falls efficacy in the elderly. METHODS: In this blinded randomized allocation study, 27 elderly were assigned to a whole-body vibration exercise group (n=14), consisting of 25 min structured exercises for 2 days per week for 6 weeks and a control group (n=13) performing the same program without vibration. At baseline and after the 6-week intervention, balance was measured using the Korean version of the Berg balance scale (K-BBS), timed up and go (TUG) test and functional reach test (FRT). Muscle strength was determined using the 30-s chair stand test (CST). Fear of falling was assessed using the Korean version of falls efficacy scale (K-FES). Paired t-test and independent t-test were used for within and between group comparisons, respectively. RESULTS: After the intervention, the experimental group showed significantly higher changes in all the parameters (K-BBS score, TUG test, CST, K-FES score) (p<.05) compared with the control group. However, there was no significant change in all parameters in the control group (p>.05). CONCLUSION: The whole-body vibration exercise program may be helpful to improve balance, mobility, muscle performance and fear of falling in the elderly.

• 대한간호학회지
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• 제45권4호
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• pp.469-482
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• 2015

Purpose: The purpose of this study was to identify which nursing interventions are the most effective in fall prevention for hospitalized patients. Methods: From 3,675 papers searched, 34 were selected for inclusion in the meta-analysis. Number of fallers, falls, falls per 1,000 hospital-days, and injurious falls, fall protection activity, knowledge related to falls, and self-efficacy about falls were evaluated as outcome variables. Data were analyzed using the Comprehensive Meta Analysis (CMA) 2.2 Version program and the effect sizes were shown as the Odd Ratio (OR) and Hedges's g. Results: Overall effect size of nursing interventions for fall prevention was OR=0.64 (95% CI: 0.57~0.73, p <.05) and Hedges's g= - 0.24. The effect sizes (OR) of each intervention ranged from 0.34 to 0.93, and the most effective nursing intervention was the education & environment intervention (OR=0.34, 95% CI: 0.28~0.42, p<.001), followed by education intervention (OR=0.57, 95% CI: 0.50~0.67, p=.001). Subgroup analyses showed that multifaceted interventions (OR=0.76, 95% CI: 0.73~0.79, p<.001) were more effective than unifactorial interventions, and that activities for prevention of falls (OR=0.08, 95% CI: 0.05~0.15, p<.001) showed the largest effect size among outcome variables. Conclusion: Falls in hospitalized patients can be effectively prevented using the nursing interventions identified in this study. These findings provide scientific evidence for developing and using effective nursing interventions to improve the safety of hospitalized patients.

• 임상간호연구
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• 제23권3호
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• pp.388-397
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• 2017

Purpose: The purpose of this study was to explore the effects of the lower limb muscle strength exercise program during hemodialysis on the leg strength and falls efficacy (fall-related self-efficacy) of hemodialysis patients. Methods: The study was designed to be a quasi-experimental, nonequivalent control group pre and post test design. A total of 42 patients participated in the study. We applied lower limb muscle strength exercise program to the experimental group in every hemodialysis three times a week for 8 weeks. Data were analyzed using ${\chi}^2$ test, fisher's exact test, t-test and repeated measures ANOVA. Results: The mean age was 58 years old (t=-1.54, p=.132), the mean hemodialysis period was 67 months (t=1.949, p=.058) and there was no significant difference of dependent variable (t=1.17, p=.251)(t=-.89, p=.381) between the two groups before the experiment. After the experiment, leg strength was significantly improved in the experimental group compared to that of the control group (F=6.63, p=.004). However, falls efficacy was not significantly different between the experimental group and the control group (F=2.33, p=.104). Conclusion: The study results indicated that the lower limb muscle strength exercise program during hemodialysis may improve leg strength and potentially to prevent falls for hemodialysis patients. Further studies are warranted in which larger number of participants and longer duration of intervention are recommended.