• 인간식물환경학회지
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• 제24권3호
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• pp.277-283
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• 2021

Background and objective: This study was conducted to increase understanding of agriculture through agricultural experience programs for adolescents living in self-reliance residence hall, and to investigate changes in work performance ability through changes in hand function. Methods: There were 11 subjects, and the average age was 18.2 years, all males without disabilities. The agricultural experience program consists of a total of 10 sessions including orientation and watching videos on future agriculture, creating vegetable gardens, planting, managing each crop, harvesting, visiting the processing room, and selling at a local food store. Results: The change in agricultural literacy by the agricultural experience program positively improved from a score of 113.73 to 127.91 (p = .008). The changes by sub-item are as follows. The value and safety of agri-foods (p = .020) and agriculture and natural environment (p = .007) were significantly improved. The function and value of rural areas (p = .050), production of agricultural products (p = .160), processing and distribution of agricultural products (p = .248), and agricultural policies (p = .058) were not significantly changed. The simple function of the hands was measured by the number of pegs inserted during 30 seconds, and the assembly function was measured by the number of pegs inserted during 60 seconds. In the case of simple function, the dominant hand was improved from 14.82 to 15.83 (p = .014), andthe non-dominant hand was also significantly improved from 13.79 to 15.01 (p = .002). There was no significant improvement in the simple function (p = .153) and assembly function (p = .770) of both hands. Conclusion: It is considered that the agricultural experience program will enable youths living in self-reliance residence halls to enhance their understanding of agriculture as an occupation, and enable them to play a role as wise consumers by positively affecting improvements in their agricultural literacy and simple hand functions.

• Nutrition Research and Practice
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• 제3권1호
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• pp.43-48
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• 2009

We investigated the nutritional state of B vitamins and the neuropsychological functions in 25 subjects, aged $63.1{\pm}6.3$ years, residing in rural areas of Korea. Nutritional states of thiamin, riboflavin, and pyridoxine were assessed enzymatically in the erythrocytes, and folate concentrations were measured microbiologically in the plasma and erythrocytes. A battery of composite neuropsychological test was administered to the subjects. Plasma folate was correlated with the total intelligence score (p=0.049). Folate levels in the erythrocytes were correlated with the performance intelligence scores such as block design (p=0.017) and picture arrangement (p=0.016). The red cell folate was correlated with memory scores such as general memory (p=0.009) and delayed recall (p=0.000). Although it did not reach statistical significance, verbal memory (p=0.053) was highly correlated with the red cell folate. The red cell folate was also correlated positively with the percent of conceptual level response number score (p=0.029), and negatively with the grooved pegboard test score for the non-dominant hand (p=0.010). Fine motor coordination was also influenced by folate nutrition, as finger tapping scores in both hands were significantly correlated with red cell folate (dominant hand; p=0.026, non-dominant hand; p=0.004). Other B vitamins such as thiamin, riboflavin, and vitamin $B_6$ were not as strongly correlated with neuropsychological function test scores as folate was. These results suggest that folate nutrition influences neuropsychological function test scores significantly in humans. Further studies are needed to explore the relationship between folate or other vitamin B nutrition and neuropsychological functions and the implications thereof.

• 농촌의학ㆍ지역보건
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• 제39권4호
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• pp.256-263
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• 2014

이 연구의 목적은 농촌지역 여중생의 골밀도와 신체활동량을 비교하는 것이다. 연구 대상자는 경상북도 달성군 D 중학교 여중생 65명이었으며, 이들을 일일 도보수에 따라 하루에 4,800 미만은 저활동군(Low PA), 4,800 - 6,300 미만은 중간활동군 (Moderate PA) 그리고 6,300 이상은 고활동군 (High PA)으로 분류하였다. 그룹 간 요추, 대퇴부, 전완에서의 골밀도는 유의한 차이가 없었다. 하지만, 높은 신체활동 집단에서는 우세손과 비우세손의 전완 골밀도 차이가 없었으나, 중간 및 낮은 신체활동 집단에서는 우세손과 비우세손의 전완 골밀도에서 유의한 차이가 나타났다. 신체활동이 적은 여자 청소년들이 우세손과 비우세손의 골밀도 차이가 나타난다는 것은 보고된 적이 없다. 비록 해부학적으로 전완의 경우 중력부하를 받는 뼈가 아닐지라도, 높은 신체활동은 비우세손의 골밀도까지 강화시킬 수 있다는 것을 보여주었다. 따라서 향후 비교적 큰 표본과 장기간 연구를 통해 낮은 강도의 신체활동 효과에 대해 더 연구할 필요가 있다고 사료된다.

• 대한통합의학회지
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• 제1권2호
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• pp.23-35
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• 2013

Purpose : We intend to make the study date for an effect of therapy by comparing the functional level both before and after conducting handwriting training and strength training as a part of treatment to improve muscle strength and function of the patient's non-dominant hand. Method : 8 subjects in writing training group conducted hand writing training 30 minutes at once and three times a week for 4 weeks in total 12 times, and 8 subjects in muscle training group conducted muscle training program of putty and Rolyan ergonomic hand exerciser for 15 minutes respectively in sum up 30 minutes at once and three times a week for 4 weeks in total 12 times. 8 subjects in control group are not applied any training for 4 weeks. Results : It was much more effective in handwriting training than muscle strength training by Grooved pegboard because this study showed the speed decrease from 67.11 to 58.26 seconds in handwriting compared with muscle strength training which showed 5.22 seconds decrease from 67.54 to 62.32(P<.05). It showed about 1.34 muscle strength improvement from 6.60 to 7.94 in handwriting training and 0.92 improvement of muscle strength from 7.04 to 7.96 in muscle strength training by 3-jaw chuck pinch, so handwriting training was more effective(P<.05). It showed 11.58 seconds decrease in handwriting training from 26.62 to 18.01 seconds and 10.93 seconds decrease from 27.43 to 16.50 seconds in muscle strength training, so it was significantly shortened both in handwriting and muscle strength training(P<.05). Conclusion : Dexterity, muscle strength, and handwriting ability of non-dominant hand could improve both the handwriting training and the muscle strength training.

• Journal of Preventive Medicine and Public Health
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• 제54권1호
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• pp.63-72
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• 2021

Objectives: Recent studies have suggested that assessing handgrip strength (HGS) asymmetry together with HGS may be helpful for evaluating problems in geriatric patients. This study aimed to identify whether HGS asymmetry, weakness, or both were associated with depression in Korean older adults. Methods: This study included 4274 subjects from the sixth and seventh Korea National Health and Nutrition Examination Survey. Depression was measured using the Patient Health Questionnaire-9. The maximum HGS of the dominant hand was used as a representative value. HGS symmetry was categorized by the ratio of the HGS of the dominant hand to that of non-dominant hand. The odds ratio (OR) for depression was calculated according to the HGS and its symmetry. Results: In total, 240 (12.5%) men and 534 (22.7%) women had depression. HGS or HGS asymmetry showed no statistically significant associations with depression in elderly men. Elevated odds of depression were observed in elderly women with low HGS (OR, 1.93; 95% confidence interval [CI], 1.33 to 2.81) or prominent HGS asymmetry (OR, 1.46; 95% CI, 1.02 to 2.08). There was a positive additive interaction between asymmetric HGS and weakness, as women with low and prominently asymmetric HGS showed higher odds of depression (OR, 3.77; 95% CI, 2.16 to 6.59) than women with high and symmetric HGS. Conclusions: Depression in elderly Korean women was associated with both low and asymmetric HGS. Our findings support the potential value of HGS asymmetry as an indicator of HGS.

• 대한인간공학회지
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• 제28권3호
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• pp.41-47
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• 2009

The purpose of this study, during the lifting task was researching the difference and a relationship between the ground reaction force and the grip strength by change of position. After grip strength has measured in symmetry position and asymmetry position at 45cm and 75cm of height of hand, ground reaction force was measured by same attitude lifting wooden box. We analyzed the difference of grip strength and ground reaction force in each position change. The results of grip strength, the grip strength of both hand were significant difference that in study subject symmetry and asymmetry position (p<0.01). The results of symmetry lifting task, the study subjects was significant difference of the ground reaction force difference by height (p<0.05). Asymmetry lifting task was significant difference of ground reaction force difference by direction of rotation was changed (p<0.01). The result of it will rotate with non-dominant hand side of lifting tasks from height 75cm where it easily maintains a balance possibility and decreasing the load of the hand. Therefore, from the workshop in the work people, it will be between the height 75cm and non-dominant hand side of trunk rotatory direction in the lifting tasks. Future study is necessary researched about the change of grip strength when the height of the hand is higher, and the difference of the ground reaction force when the change of weight.

• 한국유기농업학회지
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• 제17권4호
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• pp.501-517
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• 2009

노지재배 케일의 재배 포장 조건과 재배 작기에 따른 멀칭재료와 제초방법이 케일의 생육과 잡초 발생에 미치는 영향을 구명하고자 재배 포장은 밭토양과 논토양에서 수행하고, 재배 작기는 봄 작형과 가을 작형에서 수행하였다. 밭토양에서의 가을재배 작형의 멀칭재료에 따른 지온은 멀칭처리가 $0.9{\sim}2.0^{\circ}C$ 높았다. 잡초 방제가는 멀칭종이 처리가 91% 이상이었고, 멀칭재료와 제초방법에 따른 잡초 방제시간은 멀칭종이+기계제초 처리가 무멀칭+손제초 대비 70% 절감되었으며, 케일의 수량은 관행재배와 비슷하였다. 밭토양에서의 봄재배 작형의 종이멀칭 처리는 기온이 비교적 낮은 4월은 무멀칭대비 지온이 높았고 온도가 높아지는 5월과 6월에는 낮았다. 우점잡초는 명아주가 우점 하였으며, 잡초 방제가는 멀칭종이 처리가 52% 이상이었고, 멀칭재료와 제초방법에 따른 잡초 방제 시간은 멀칭종이+기계제초 처리가 무멀칭+손제초 대비 75% 절감되었으며, 케일의 수량은 관행재배대비 34% 증수되었다. 논토양에서의 봄재배 작형의 우점잡초는 둑새풀이 우점 하였으며, 잡초 방제가는 멀칭종이 처리가 43% 이었고, 멀칭재료와 제초방법에 따른 잡초 방제시간은 멀칭종이+기계제초처리가 무멀칭+손제초 대비 80% 절감되었으며, 케일의 수량은 관행재배대비 26% 증수되었다.

• 해양환경안전학회지
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• 제15권4호
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• pp.329-338
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• 2009

북부 가막만에서 해양환경의 변화에 따라 식물플랑크톤의 군집이 어떻게 변화하는지 기존에 발표된 식물플랑크톤 생리학적 자료를 이용하여 해석하였다. 해양환경 및 식물플랑크톤 조사는 2007년 11월부터 2008년 9월까지 2개 정점에서 관측하였다. 조사 동안 10%이상 점유율을 나타내는 우점종은 와편모조류 1종, 규조류 11종 등 총 12종이었다. 우점종의 출현 시기를 보면 규조류 Skeletonema costatum이 하계(7월과 8월)를 제외하고 우점하였으며, 특히 12월은 90% 이상의 매우 높은 우점율을 보였다. 그리고 나머지 기간은 규조류 Eucampia zodiacus와 Chaetoceros속이 우점하였다. 따라서 2008년 7월과 8월에 S. costatum이 우점하지 않는 이유를 생리학적 측면에서 살펴보면 1) S. costatum과 E. zodiacus는 모두 광온 광염성 종이지만, 하계의 수온에서는 E. zodiacus가 S. costatum보다 높은 성장속도를 보였고, 2) 7월에 낮은 부유물질의 농도는 높은 광량이 수중에 도달할 수 있어 E. zodiacus와 같이 광에 대한 친화성이 낮은 종도 우점할 수 있다. 또한 3) 인산염이 비교적 낮은 시기에는 성장전략을 보이는 S. costatum이, 높은 인산염 농도일 때 저장전략을 보이는 E. zodiacus종이 우점할 수 있기 때문으로 생각된다. 앞으로 더 구체적인 식물플랑크톤의 군집 변화를 알아보기 위해서는 계절별로 우점하는 대표 식물플랑크톤에 대한 생리실험이 필요할 것으로 보인다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 학술대회 논문집 정보 및 제어부문
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• pp.322-324
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• 2004

Up to the present, digital replantation patients has appealed different symptoms due to blood circulatory failure. But, the level of blood circulatory failure has been evaluated only by clinical symptoms, or angiography. According to the cases of digit replantation is increasing, then objective evaluation methods of the level of blood circulation failure is needed other than patient's subjective symptoms and complaints. Although angiography, doppler, electromagnetic flowmeter, laser blood flowmeter, mechanical blood flowmeter has been used for the evaluation of the blood circulatory failure, the result was affected by time, place, surrounding temperature, patient's body temperature, and even emotion. Therefore, it is pointed out with lack of availability, feasibility and reproducibility. Thus, we compared digital blood flow of dominant hand to non dominant hand, and replanted fingers to opposite normal fingers from developed photo-plethysmography. The average digital blood flow showed no difference in normal digits each other, but, replanted digits showed average of 53% (9 - 100 %) compare to opposit normal digits. As it measure relative blood flow for circulatory failure of tissue such as fingers and toes more sensitively, reliably. In conclusion, it is expected that photo- plethysmography will be very useful for diagnosis, curative effect, prognosis of blood circulatory failure in digital replantation patient.

• The Journal of Korean Physical Therapy
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• 제23권2호
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• pp.31-36
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• 2011

Purpose: We investigated the effects of physical practice, mental practice, and cross education using serial reaction time (SRT) in the non-dominant left arm of right-handed individuals. Methods: Subjects were divided into three groups; physical practice (n=8), mental practice (n=8) and controls (n=8). They did, respectively, physical training or mental training, or had no intervention for three weeks. Super lab 4.0 displayed four symbols on the monitor and subjects were asked to push the matching button. Reaction time was assessed pre- and post-intervention. Results: Reaction time was significantly lower after physical practice (p<0.05), but mental practice did not significantly lower reaction time? in the left hand. Also, reaction time was not significantly lower after physical practice or mental practice in the right hand. Conclusion: Physical practice can improve motor learning, but mental practice is not sufficient. Also, neither physical practice nor mental practice is sufficient for cross education from the nondominant to the dominant arm.