• 대한정형도수물리치료학회지
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• 제21권2호
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• pp.15-24
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• 2015

Background: Many people are suffering from neck and shoulder pain due to muscle weakness, muscle fatigue, lack of exercise and accidents during exercise. In this study we compared the effects of McKenzie method and Mulligan technique method. Method: we randomly selected men(10) and women(10) and they are the 20s students of Busan material K college. We divided for McKenzie exercise group and Mulligan exercise group. McKenzie exercise and mulligan exercise applied cervical area three times a week for three weeks. We compared with pre-experiment and after 1~3 week through measuring the electromyography (EMG) change and neck range of motion (ROM). Results: The changes in the EMG at each exercise group, there was a statistically significant difference in each week. Although there was a significant difference after 1 week between the exercise group, the changes in the neck ROM at each exercise group there was no statistically significant difference. Conclusion: After experiment, EMG and neck ROM were increased in McKenzie exercise group and Mulligan exercise group. But Mulligan exercise group showed the change better than McKenzie exercise group in early stage. We suggest the Mulligan exercise method for recovering in early stage of neck ROM.

• The Journal of Korean Physical Therapy
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• 제29권2호
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• pp.80-84
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• 2017

Purpose: This study was conducted to examine the effects of different sizes of blood flow restriction areas on the thickness of the external oblique and biceps brachii. Methods: The study subjects were 52 adults who were divided into four groups that performed plank exercises over a six-week period after blood flow restriction. Changes in the thickness of the external oblique and biceps brachii were measured using ultrasonography before the experiment, then three and six weeks after the experiment. The changes in each variable over time were evaluated by repeated-measures analysis of variance (ANOVA). Results: The external oblique and biceps brachii showed significant differences in muscle thickness with regard to time and the interaction between time and each group (p<0.01), but no significant differences with regards to changes between groups (p>0.05). Conclusion: A larger blood flow restriction area resulted in a statistically significant increase in muscle thickness. The results of this study may be used as the basis for future studies and for rehabilitation in clinical practice.

• The Journal of Korean Physical Therapy
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• 제29권2호
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• pp.69-73
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• 2017

Purpose: This study was conducted to investigate the effects of blood flow restriction and different support surfaces for bridge exercises on the thickness of the transverse abdominis and multifidus, which are trunk-stabilizing muscles. Methods: The study's subjects were 45 adults who were divided into three groups that performed bridge exercises over a six-week period on their respective support surfaces after blood flow restriction. Changes in the thickness of the subjects' transverse abdominis and multifidus muscles were measured using ultrasonography before the experiment, then three and six weeks after the experiment. The changes in each variable over time were analyzed using a repeated-measures analysis of variance (ANOVA). Results: The transverse abdominis showed significant differences in muscle thickness with regard to time and the interaction between time and each group (p<0.05), but no significant differences with regard to changes among groups (p>0.05). The multifidus showed significant differences in muscle thickness with regard to time, the interaction between time and each group, and changes between groups (p<0.05). Conclusion: Blood flow restriction and different support surfaces for bridge exercises led to significant differences in the thickness of the transverse abdominis and multifidus. This study's results may be used as the basis for future studies and for rehabilitation in clinical practice.

• PNF and Movement
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• 제11권2호
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• pp.57-65
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• 2013

Purpose : This purpose of this study was to investigate the effects of elastic band resistance exercise program in the falls prevention of elderly women. Methods : The subjects of this study, 46 people elderly women who participated in the exercise program of Jeollanamdo Y elderly welfare center were chosen as subjects and use the elastic band resistance exercise program for 12 weeks. Results : There was a significant increase on the physical function and fall efficacy of all the subjects in the experimental group and the control one after the experiment. Furthermore, the experimental group showed more meaningful improvement than the control one. Conclusion : Falls Efficacy of the experimental group before the experiment, after the changes in difference was noted. More results from the 12 weeks of using the elastic band resistance exercise program to increase the efficacy of body functions (power of lower extremity, muscle endurance, flexibility, balance, and agility), and falls efficacy of elderly women is considered as an effective fall prevention exercise program.

• 국제물리치료학회지
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• 제12권2호
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• pp.2323-2330
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• 2021

Background: Stroke patients have weak trunk muscle strength due to brain injury, so a single type of exercise is advised for restoring functionality. However, even after intervention, the problem still lies and it is suggested that another intervention method should be applied with exercise in order to deal with such problem. Objectives: To Investigate the effect of bridge exercise combined with functional electrical stimulation (FES) on trunk muscle activity and balance in stroke patients. Design: Randomized controlled trial. Methods: From July to August 2020, twenty stroke patients was sampled, ten patients who mediated bridge exercises combined with functional electrical stimulation were assigned to experiment group I, and ten patients who mediated general bridge exercises were assigned to experiment groupII. For the pre-test, using surface EMG were measured paralyzed rectus abdominis, erector spinae, transverse abdominis/internal oblique muscle activity, and using trunk impairment scale were measured balance. In order to find out immediate effect after intervention, post-test was measured immediately same way pre-test. Results: Change in balance didn't show significant difference within and between groups, but muscle activity of trunk was significant difference rectus abdominis and erector spinae within groups I (P<.01), also between groups was significant difference (P<.05). Conclusion: Bridge exercise combined with FES could improve trunk function more effectively than general bridge exercise due to physiological effect of functional electrical stimulation.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2001년도 추계학술대회 논문집
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• pp.297-300
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• 2001

Physical modeling technique is applied to investigate foam generation in molten aluminum. By using room temperature water with specially designed equipment, the effects of stirrer type, fluid viscosity(glycerine added to water) and stirring velocity on foam generation behaviors are intensively analysed The distribution and size of bubbles varied with each process parameters but the most important parameters are stirring velocity and fluid viscosity. The results obtained from physical simulation have been confirmed by actual aluminum foam generation experiment at various process variables.

• 대한한의학방제학회지
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• 제7권1호
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• pp.183-188
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• 1999

Though development of diverse and highly value-added commodities in Artemisia Iwayomogi, we can expect such effects as procurement of secure farm's production bases and promotion of consumer's demands. Thus, as a first step for development of funtional foods of Artemisia Iwayomogi, solids yield, physical properties and scopoletin contents which is main component of Artemisia Iwayomogi, were investigated according to extration solvents and temperatures. The main result of this experiment were as following: solid yield in 50% ethanol extracts showed higher than those of water extracts at the same temperature. In condition of 50% ethanol extracts, solid yield, degree of browing and scopoletin contents showed increasing, but turbidities which mean transmittance(%T) showed decreasing sa temperature rise. In water extracts, pH values showed increasing as temperature rise.

• 대한인간공학회지
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• 제17권2호
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• pp.25-32
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• 1998

A combined PC and TV monitor has been developed in several companies. The characteristics of physical user interface in this monitor are likely to vary from existing monitors. Therefore, two experiments to investigate the physical interface characteristics of this monitor were conducted. The first experiment was to investigate the characteristics of color perception with monitor coating (coating vs. non-coating) and screen brightness (30fL vs. 35fL) in the PC mode. The second experiment was to investigate the characteristics of luminance contrast with monitor coating and image movement (static vs. dynamic) in the TV mode. Twenty-three subjects (male 12, female 11) were participated in this experiment. In the first experiment, average color temperatures were obtained in all experimental conditions. There was a significant difference between coating and non-coating screen at 0.1 level. In the second experiment, average luminance contrasts were obtained in all experimental conditions. There was a significant difference between coating and non-coating screen at 0.05 level. In addition, there was a significant difference between static picture and dynamic picture at 0.1 level.

• 한국작물학회지
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• 제44권3호
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• pp.207-213
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• 1999

Thirty-eight glutinous rice varieties were classified into nine groups on the scatter diagram by the upper two principal components (56% contribution to the total information) based on eleven physicochemical characteristics including the viscograms and physical properties of cooked rice. The first principal component was the factor mainly associated with the viscogram characteristics of rice flour emulsion and the second was the factor chiefly related to the physical properties of cooked rice and water absorbability of rice grain. Indica glutinous rices were clearly distinguished from japonica ones by the first principal component score. Javanica glutinous rices were widely distributed on the intermediate zone between indica and japonica or on several japonica rice groups. Significant positive or negative correlations were found among water absorption rates of rice grain, physical properties of cooked rice, and viscogram characteristics of rice flour. Especially in japonica glutinous rices, the breakdown and setback viscosities of rice flour were closely associated with the alkali digestion value of milled rice and the stickiness of cooked rice. The frequency ratio of short glucose chains (A-chain) to intermediate glucose chains (B-chain), the ratio of B- chains to long glucose chains (C-chain) and the relative frequency of A- or B-chain fractions representing the amylopection structure of rice starch was closely associated with the breakdown and setback viscosities of rice flour.

• 보존과학연구
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• 통권27호
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• pp.145-163
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• 2006

This study is to be investigated through firing experiment in studio in order to reveal a physical properties of celadon according to change firing temperature. The results can be briefly summarized as below; Firstly, in measurement of color chromaticity, samples of first firing in body were effective in differentiating of changed color in samples from each other but there of second firing were not. The color of the glaze was more effective change than that of the body. Secondly, bulk density of body was increased with temperature and it was attained highest point in $1200^{\circ}C$ Additionally, water absorption ratio was most rapidly changed between $1000^{\circ}C$ and $1200^{\circ}C$Thirdly, in the microstructural analysis, body of samples in first firing have not specific characteristics in the changed patterns of microstructure. body and glaze of samples in second firing have many that. Consequently, we knew that this experiment can be provided researcher with physical properties and firing mechanisms of celadon.