• Journal of Biomedical Engineering Research
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• v.38 no.5
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• pp.232-236
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• 2017

In this study, We investigated the effect of foot cooling on the reduction of body temperature after hard exercise at the high temperature of $40^{\circ}C$. We performed a total of 30 subjects, and the subjects performed treadmill exercise for 30 minutes. We produced the cooling device to cool the foot using Peltier module. After the end of the exercise, We performed normal recovery method and cooling recovery method(one foot, both feet) for 1 hour on the same indoor environmental conditions and confirmed the change of body temperature of subjects. The results of deep body temperature measurement showed average $38.78{\pm}0.22^{\circ}C$ to $38.54{\pm}0.15^{\circ}C$ when the normal recovery method was performed. Cooling recovery method on one foot showed average $38.69{\pm}0.14^{\circ}C$ to average $38.06{\pm}0.17^{\circ}C$ and Cooling recovery method on both feet showed average $38.69{\pm}0.15^{\circ}C$ to average $37.84{\pm}0.21^{\circ}C$. There was a significant difference between the normal recovery method and the one foot cooling recovery method(p < .05), there was a significant difference between the normal recovery method and the both feet cooling recovery method(p < .05) and there was a significant difference between the one foot cooling recovery method and the both feet cooling recovery method(p < .05). Body temperature showed the lowest decrease rate when the normal recovery method was performed, and body temperature showed the highest decrease rate when the both feet cooling recovery method was performed. Therefore, recovery of cooling on the foot after hard exercise have decreased body temperature, delay fatigue in the body, and will be contributed to improvement of athlete performance.

• The Korean Journal of Rehabilitation Nursing
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• v.17 no.2
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• pp.64-71
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• 2014

Purpose: The purpose of this study was to identify the quality of recovery and influential factors on the quality of recovery after cardiac surgery. Methods: 198 patients undergone cardiac surgery were asked to fill in a self-reported questionnaire about the quality of recovery, anxiety, depression including social support at discharge. The collected data were analyzed with mean, standard deviation, correlation and stepwised multiple regression. Results: The mean scores of quality of recovery at discharge after cardiac surgery was 2.04 on a 3 point scale. Influential factors on the quality of recovery after cardiac surgery were depression(p=.001) and anxiety(p=.027), which disclosed 44.2% of explanation. Depression was the most influential factor. Conclusion: The influential factors on the quality of recovery at discharge after cardiac surgery were depression and anxiety. More studies will be required to reduce depression and anxiety in patients undergone cardiac surgery.

• Resources Recycling
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• v.24 no.4
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• pp.12-21
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• 2015

Almost all copper slags contain a considerable amount of Cu (0.5 - 3.7%) close to or even higher than copper ores. A number of methods for metal recovery from copper slag were reported These methods can be classified into three categories, flotation, leaching and roasting. Sulfide flotation method for the recovery of copper from Kazahstan copper furnace slag is discussed in this investigation. 50% of copper from the slag was recovered by sulfide flotation at pH 4. meanwhile 67% of copper from the slag was recovered at pH 11. Higher copper recovery result at pH 11 rather than that at pH 4 was caused by the fact that copper sulfides were floated in particle size fraction over $100{\mu}m$ in concentrates at pH 11. When the slag were ground below $74{\mu}m$by ball milling, the recovery of copper by floation in slag improved to 78 - 83% because of copper liberation effect.

• The Korean Journal of Pain
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• v.29 no.2
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• pp.86-95
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• 2016

Background: The present study was designed to examine the functional recovery following spinal cord injury (SCI) by adjusting the parameters of impact force and dwell-time using the Infinite Horizon (IH) impactor device. Methods: Sprague-Dawley rats (225-240 g) were divided into eight injury groups based on force of injury (Kdyn) and dwell time (seconds), indicated as Force-Dwell time: 150-4, 150-3, 150-2, 150-1, 150-0, 200-0, 90-2 and sham controls, respectively. Results: After T10 SCI, higher injury force produced greater spinal cord displacement (P < 0.05) and showed a significant correlation (r = 0.813) between the displacement and the force (P < 0.05). In neuropathic pain-like behavior, the percent of paw withdrawals scores in the hindpaw for the 150-4, 150-3, 150-2, 150-1 and the 200-0 injury groups were significantly lowered compared with sham controls (P < 0.05). The recovery of locomotion had a significant within-subjects effect of time (P < 0.05) and the 150-0 group had increased recovery compared to other groups (P < 0.05). In addition, the 200-0 and the 90-2 recovered significantly better than all the 150 kdyn impact groups that included a dwell-time (P < 0.05). In recovery of spontaneous bladder function, the 150-4 injury group took significantly longer recovery time whereas the 150-0 and the 90-2 groups had the shortest recovery times. Conclusions: The present study demonstrates SCI parameters optimize development of mechanical allodynia and other pathological outcomes.

• Journal of the Ergonomics Society of Korea
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• v.36 no.5
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• pp.535-543
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• 2017

Objective: This study was designed to identify factors affecting pilots' +Gz tolerance recovery from +Gz induced exhaustion. Background: +Gz tolerance of pilots has been considered as a crucial factor to fly the modern high performance fighter aircrafts. However, the factors affecting pilots' G-tolerance recovery from +Gz induced exhaustion have not been examined in the acceleration research community. Method: A centrifuge profile consisting of a high +Gz run for pilot's exhaustion and a low +Gz run for pilot's recovery and another high +Gz runs for pilot's second exhaustion was designed. The subjects' +Gz tolerance recovery ratio was measured by ratio of second high +Gz run time to the first high +Gz run time. The subjects' +Gz tolerance recovery rate was measured by dividing the subjects' +Gz tolerance recovery ratio by the low +Gz run time. The subjects' G-tolerance recovery rate was analyzed with respect to the subjects' personal factors including subjects' anthropometric and physiologic characteristics, flight time, flying aircraft type and so on. Results: The subjects' previous three-month flight hours (r=-0.336, p=0.039), six-month flight hours (r=-0.403, p=0.012) and one-year flight hours (r=-0.329, p= 0.044) correlated with the subjects' G-tolerance recovery rate. Conclusion: The subjects' G-tolerance recovery rate is clearly related to the subjects' previous flight hours. However, the subjects' anthropometric and physiologic characteristics do not show any statistically significant correlation with the subjects' G-tolerance recovery rate. Application: This research provides a safety critical insight to aviation community by identifying the factors to affect the gravity-induced loss of consciousness (GLOC) of pilots.

• Korean Journal of Adult Nursing
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• v.17 no.4
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• pp.612-621
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• 2005

Purpose: This study aims at confirming the effects of the chest meridian massage on the post-anesthetic recovery of general anesthesia appendectomy patients. Method: The research was post-test designed as a nonequivalent control group among quasi-experiments tested. The data was collected from June 20, 2003 to October 14, 2003 at a hospital in P city. In the collected data, using SPSS Win 10.0 program, these general features were analyzed by real numbers and percentages; the homogeneity among variables by $X^2-test$ and t-test and the research hypothesis by the t-test. Result: Hypothesis 1; The experimental group receiving the treatment of the chest meridian massage will have a much higher post-anesthetic recovery score than that of the control group not receiving it was supported(t=2.544, p=.014). Hypothesis 2; The experimental group receiving the treatment of the chest meridian massage will have a much shorter time of stay in the recovery room than that of the control group not receiving it was supported(t=-4.919, p=.000). Conclusion: According to these results, it may be concluded that Chest Meridian Massage is effective in producing a higher level of post-anesthetic recovery score and helps appendectomy patients reduce the time of stay in the recovery room. Therefore the chest meridian massage can be considered as an intervention therapy for directly nursing general anesthesia appendectomy patients.

• The Journal of Korean Physical Therapy
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• v.9 no.1
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• pp.147-156
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• 1997

The purpose of this study is to determine the difference of reduction in lactic acid of blood in the course of time 1)whoa applying the blood cleaning therapy during recovery after anaerobic exercise, 2)when applying the massage during recovery after anaerobic exercise, and 3)while taking a rest during recovery after anaerobic exercise, respectively. The subject of this study consists of 30 men who are divided into three groups such as group 1(n=10) for the blood cleaning therapy, group 2(n=10) for the massage and group 3(n=10) for rest. The blood-gathering was performed over four times ; during rest, immediately after unaerobic exercise, and at 10 and 15 minutes during recovery. The results were summarized as fellows. 1. There was reduction in lactic acid when applying the blood cleaning therapy during recovery after anaerobic exercise. And remarkable differences were shown from immediately after exercise to at 10 and 15 minutes during recovery(p<0.01 and p<0.001, respectively). 2. There was also reduction in lactic acid when applying the massage during recovery after anaerobic exercise. No difference wan shown from immediately after exercise to at 10 minutes during recovery. However a remarkable difference was shown from immediately after exercise to at 15 minutes during recovery(p<0.05). 3. The rest group which took a rest during recovery after anaerobic exercise did not show any difference from immediately after exercise to at 10 and 15 minutes during recovery.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.4
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• pp.211-220
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• 2018

This study was conducted to identify the mediating effects of the therapeutic relationship with mental health professionals between empowerment and recovery in mental illness. The participants were 168 adults in two community mental health centers and three rehabilitation centers in Jeonbuk. The data were collected by structured questionnaires from April 15 to April 30, 2015 and analyzed using descriptive statistics, Pearson's correlation coefficient, and multiple regression analysis with the SPSS 19.0 statistical program. The mean score of empowerment for mental illness, recovery and therapeutic relationship were $60.4{\pm}10.85$, $101.8{\pm}20.70$ and $74.5{\pm}14.30$, respectively. There were significantly positive correlations between recovery in empowerment and therapeutic relationship (r=0.33, p<0.001), as well as empowerment and recovery (r=0.51, p<0.001), while there were significantly positive correlations between therapeutic relationship and recovery (r=0.55, p<0.001). Therapeutic relationship had a partial mediated effect between empowerment and recovery, which was found to be significant by the Sobel test (z=3.706, p<0.001). The results of this study can be used as basic data for development of a practical recovery-enhancing program to promote therapeutic relationships and improve empowerment in relation to therapist of the mentally disabled.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.182-191
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• 2019

The purpose of this study was to identify correlation among social support, recovery resilience, and self-care behavior among the elderly with hypertension, as well as to clarify factors that affect self-care behavior. This was a descriptive study conducted with 183 hypertensive seniors over age 65 from three different senior welfare centers in C region. Data of this study were collected from Aug 20-31, 2018. T-test, ANOVA, Pearson's coefficient, and stepwise multiple regression were used for analysis. As a result, the mean score of social support was $3.79{\pm}0.78$ out of 5, recovery resilience was $4.10{\pm}0.71$ out of 5, and self-care behavior was $3.93{\pm}0.51$ out of 5. Self-care behavior had a statistically significant positive correlation with social support(r=.204, p<.001) and recovery resilience(r=.405, p<.001). Factors influencing Self-care behavior were recovery resilience(${\beta}=.36$, p<.001) and regularity of exercise(${\beta}=.17$, p=.019). These factors explained 18.9% of self-care behavior(F=21.02, p<.001). The study results indicate that recovery resilience and regularity of exercise are critical factors affecting self-care behavior among the elderly with of hypertension. Therefore, to promote self-care behavior among the hypertensive seniors, regular exercise must be advised and the development and evaluation of nursing interventions that can improve recovery resilience may be necessary.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.662-671
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• 2018

This study was designed to investigate the impact of stress coping ability and recovery resilience on nurses' retention intent in medium-sized hospitals. For this descriptive study, a survey was conducted with 265 nurses from 5 medium-sized hospitals with over 150 sickbeds located in G and I province; the data were collected from May 19 to May 25, 2018. The collected data were analyzed by t-test, ANOVA, Pearson's correlation coefficients, and multiple regression. The average score was $2.55{\pm}0.25$ for stress coping ability, $3.47{\pm}0.49$ for recovery resilience, and $2.59{\pm}0.29$ for retention intent. Retention intent was positively correlated with stress coping ability (r=0.285, p<0.01) and recovery resilience (r=0.457, p<0.01). The factors affecting retention intent were gender (${\beta}=0.117$, p=0.027), job satisfaction (${\beta}=0.345$, p<0.001), stress coping ability (${\beta}=0.142$, p=0.008), and recovery resilience (${\beta}=0.238$, p<0.001). Furthermore, the model explained 37.8% of the retention intent (F=11.686, p<0.001). In conclusion, effective strategies for improving job satisfaction, stress coping ability, and recovery resilience for nurses need to be developed and investigated.