• Korean Journal of Community Nutrition
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• v.7 no.5
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• pp.603-614
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• 2002

In this study, the nutrient intakes, dietary quality, and muscle strength of elderly women in a social-welfare center of a large city were compared with those of elderly women at home in a large city. Also, the relationships between muscle strength and nutrient intake status were investigated in both elderly group. The results of this study were as follows: The ages of elderly in the social welfare center and of elderly in general home residing elderly were 68.2 and 70.3 years, respectively. The average energy and nutrient intakes of both groups were lower than the Korean RDA. There were no differences between the groups in terms of macro-nutrient composition and quantity. The elderly in center showed significantly lower intakes of vitamin $B_2$, niacin and calcium than the home-residing elderly. The hand grip strength and back muscle strength were lower in the elderly of social welfare center, but a significant difference was found only in the left hand grip strength. The muscle strength, especially the left hand grip strength of those in social welfare center, showed significant correlations with various nutrient intakes. In contrast, generally no relationship between muscle strength and nutrients intakes status could be found in the home residing elderly. The variances in the mean hand grip strength and the left hand grip strength 19.0% and 18.6% respectively, were explained by their ages. This is in contrast to 22.3% and 32.4% of calorie intake and vegetable protein intake in the elderly of the social welfare center. In conclusion, the status of nutrient intake in those in the social welfare center seems to be low, and it is assumed that the low calorie and vegetable protein intake may contribute to the muscle strength decline in the socioeconomically high risk elderly.

• Journal of International Academy of Physical Therapy Research
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• v.5 no.1
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• pp.652-660
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• 2014

In the present study, to examine the effects of somatosensory stimulation of the hands on the hand functions and visuomotor coordination of children with developmental disabilities, a total of 24 sessions of experiments were conducted with three children with developmental disabilities for 60 minutes per session, three sessions per week from January 7, 2013 to March 11, 2013. To examine the effects of somatosensory stimulation of the hands on grasping and visuomotor coordination which are sub-areas of PDMS-2, the A-B study design was used which is a single case study method out of single-subject experimental research designs. Somatosensory stimulation of the hands was shown to be effective in improving the hand functions of children with developmental disabilities. Somatosensory stimulation of the hands showed positive effects on the raw scores and standardized scores of grasping and visuomotor coordination in all the three subject children. Visuomotor coordination functions showed higher scores in post-hoc tests in all three children. In particular, ring throws showed high scores at right $90^{\circ}$, right $45^{\circ}$, center, left $45^{\circ}$, and left $90^{\circ}$ among visual directions. In the present study conducted with children with developmental disabilities, ring throws were performed to examine visuomotor coordination. In particular, the numbers of successes of ring throws on the front, left, and right were shown to be high. Therefore, somatosensory stimulation of the hands was effective on the hand functions and visuomotor coordination functions of children with developmental disabilities.

• The Korean Journal of Pain
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• v.10 no.2
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• pp.266-269
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• 1997

Herpes zoster is a relatively common disease caused by Varicella-Zoster virus and characterized by a vesicular dermatomal rash and a variety of neurologic manifestations. These neurologic symptoms include herpes zoster neuralgia, myelitis, encephalitis, cranial arteritis, segmental and rarely polyradiculitis. This report is a case of a 57-year-old female with herpes zoster paresis affecting the arm and hand. Herpetic pain was much relieved after continuous cervical epidural blockade. However, fifty days after onset of ailment, she complained motor paralysis. EMG of muscles innervated by the left $C_8$ and $T_1$ roots revealed high frequency denervation potentials and large amplitude polyphasic motor units. We recommended physiotherapy and aggressive exercise therapy of the hand. After eighty days of therapy, denervated spontaneous activities disappeared on EMG. Clinically, strength of muscles had nearly recovered to 75% of normal strength in left hand intrinsics.

• Journal of Sensor Science and Technology
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• v.21 no.3
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• pp.192-197
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• 2012

This paper describes the control of the hand fixing system attached to the finger rehabilitation robot for the rehabilitation exercise of patient's fingers. The finger rehabilitation robot is used to exercise the finger rehabilitation, and a patient's hand is safely fixed using the hand fixing system. In this paper, the hand fixing system was controlled with PD gains to fix a palm of the hand, and the characteristic test for the hand fixing system was carried out to sense the fixed hand movement of the front and the rear, that of the left and the right, and that of the upper. It is thought that the hand fixing system could safely fix the hand, and the movement of the fixed hand could be perceived using the five-axis force/moment sensor attached to the hand fixing system.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.436-439
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• 2012

The work is to the control the desktop Computers based on hand gesture recognition. This paper is worked en real time tracking and recognizes the hand gesture for controlling the slides based on hand direction such as right and left using a real time camera.

• Korean Journal of Applied Biomechanics
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• v.15 no.4
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• pp.55-66
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• 2005

The present study used a video analysis system to quantify the kinematical data of step shoot motion by male university handball players. From the results of analyzing dynamic variables of step shoot motion according to shooting direction were drawn conclusions as follows. 1. The height of release was proportional to the height of players, and the height of release appeared low in left-side attacks. This is probably because the left-right-throwing angle is larger in left-side attacks than that in center attacks and right-side attacks and, as a result, the throwing arm is lowered down in throwing. 2. The leftward inclination angle of the body was larger in order of right-side attacks > center attacks > left side attacks. 3. Players' throwing form was close to three quarter style in left-side attacks. In center and right-side attacks, the arm was somewhat more upright but still it was more three quarter style than overhand style. 4. The front-rear throwing angle at the moment of release was much higher in right-side attacks than in left-side ones. This is probably because the point of time for releasing the ball is usually late in right-side attacks and, as a result, the front-rear throwing angle becomes quite large. 5. The contribution of body parts on the ball speed was higher in order of the forearm > upper arm, hand > shoulder joint. 6. In players whose distance between the two legs at the moment of release, their body usually did not incline to the side much. Thus it is considered necessary to correct the right leg in their shooting motion. 7. According to the result of analyzing throwing form, the speed of the ball at the moment of leaving the hand was faster in right-side attacks than in left-side and center attacks.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.3
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• pp.1245-1251
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• 2013

The aim of this study is to identify characteristics of 2D:4D according to type of handedness. Data was collected from October, 4th, 2010 to April, 30th, 2012. After handedness assessment, 2nd and 4th finger length were measured by vernier calipers. This study showed remarkable gender difference of 2D:4D in left hand for left handers and right hand for right handers, However, there was no significant difference according to type of handedness in each gender. The correlation between left and right 2D:4D in males right handedness was higher than that of male left handedness, otherwise, in case of female, that of left handedness was higher than that of right handedness. The results of this study suggest that the 2D:4D of left handedness does not differ from that of right handedness, however, gender difference and correlation between left and right 2D:4D show different characteristics according to handedness.

• Korean Journal of Optics and Photonics
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• v.15 no.4
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• pp.355-360
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• 2004

Biophotons from three healthy subject's hands were measured every Friday for one year. The correlation coefficients between the left and right palms were found to be 9.0, and a similar value was also obtained between the left and right back of hands. However, the correlations between the palm and back of a hand turned out to be low, on the average only 0.5. These results are consistent with the result of Zhang's $CO_2$ production rate experiments on the acupuncture points. The high correlation between the left and right, and the low correlation between the palm and back are interpreted according to the acupuncture theory of meridians. The palm and the back correspond to the yin and yang meridians, respectively. And their behaviors are rather opposite, thus they show low correlations.

• Journal of Korean Neurosurgical Society
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• v.30 no.7
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• pp.947-950
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• 2001

Cavernous angiomas are being increasingly well recognized throughout the central nervous system due to the widespread use of magnetic resonance imaging(MRI). However, these malformations are uncommon in the spinal column and rarely occur in the spinal cord. Here, we report a case of a cervical cord intramedullary cavernous angioma in a 49-year-old man. The patient had complained of left upper extremity paresthesia and weakness in the left hand for 5 days prior to admission. A neurological examination showed a left C-6 dermatome paresthesia and a weakness in the left hand grasping power. A MRI demonstrated a mixed signal intensity core at the C-5 level and a surrounding edema on the T-2 weighted image. Conservatively, a laminectomy was performed and slightly hard and well demarcated intramedullary mass was removed. A histological examination confirmed the diagnosis of a cavernous angioma.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.28 no.1
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• pp.33-41
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• 2017

This paper suggests a hand gesture recognition technology to control smart devices using multiple Doppler radars and a support vector machine(SVM), which is one of the machine learning algorithms. Whereas single Doppler radar can recognize only simple hand gestures, multiple Doppler radar can recognize various and complex hand gestures by using various Doppler patterns as a function of time and each device. In addition, machine learning technology can enhance recognition accuracy. In order to determine the feasibility of the suggested technology, we implemented a test-bed using two Doppler radars, NI DAQ USB-6008, and MATLAB. Using this test-bed, we can successfully classify four hand gestures, which are Push, Pull, Right Slide, and Left Slide. Applying SVM machine learning algorithm, it was confirmed the high accuracy of the hand gesture recognition.