• 제목/요약/키워드: Stimulation time

검색결과 952건 처리시간 0.034초

간섭 전류 자극이 상지 혈류변화에 미치는 영향 (The Effects of Interferential Current Therapy on Blood Flow in upper limbs)

  • 박래준;박영한
    • The Journal of Korean Physical Therapy
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    • 제15권4호
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    • pp.140-150
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    • 2003
  • The purpose of study was to compare change of blood volume on upper limb of stimulus site on interferential current therapy. Twenty university student(twelve females. eight males :mean aged 23.08) with health condition participated this study MP150 system(biopac system) was used to measured blood volume. PPG senser was located thrum finger end The obtain result are as follows. 1. The result of this study were following that stimulate time blood volume were significantly increased sympathetic stimulation group compared with muscle stimulation group(p<.05). 2. The result of this study were following that stimulate time blood volume were significantly increased sympathetic stimulation group compared with muscle stimulation group(p<.05). 3. The result of this study were following that sympathetic stimulation group were significantly increased stimulate time blood volume compared with stimulate time blood volume(p<.05). 4. The result of this study were following that muscle stimulation group were significantly increased stimulate time blood volume compared with stimulate time blood volume(p<.05).

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고빈도 경피신경전기자극의 자극강도에 따른 정상 성인여성 교감신경성 반응의 변화 (Changes in Sympathetic Nervous System Responses of Healthy Adult Women with Changes in the Stimulus Intensity of High Frequency Transcutaneous Electrical Nerve Stimulation)

  • 최유림;이정우
    • The Journal of Korean Physical Therapy
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    • 제22권1호
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    • pp.61-66
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    • 2010
  • Purpose: The purpose of this study was to investigate the change in sympathetic nervous system responses of healthy adult women with changes in stimulus intensity of high frequency transcutaneous electrical nerve stimulation. Methods: Twenty-four healthy subjects (women) received high frequency electrical stimulation of the forearm. The subjects were randomly assigned to one of two groups; a low intensity stimulation group (n=12) and a high intensity stimulation group (n=12). The electrode attachment was arranged on the forearm of the dominant arm and the electricity stimulus time was 20 minutes. Measured items included skin conductance, pulse rate, skin temperature, and respiration rate. Each was measured at 4 times. Results: Skin conductance and skin temperature showed significant group by time interactions, though there were no significant group and time effects. There were no significant differences according to time, group effect, and a group by time interaction in pulse and respiration rates. Conclusion: High frequency and high intensity electrical stimulation may be helpful for the improvement of sudomotor function through the activation of the sympathetic nervous system. Also, high frequency and low intensity electrical stimulation may be helpful for the reduction of sudomotor function via inhibition of the sympathetic nervous system.

천구 및 지구의 침 자극이 노인 변비의 대장 통과시간에 미치는 영향 (The Effects of Acupuncture(ST25, TE6) Stimulation on Colonic Transit Time in Old Age Constipation Persons)

  • 황상일;이윤재;임은경;정현애;문미현;조영기;이성균;김동웅
    • 동의생리병리학회지
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    • 제18권1호
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    • pp.220-225
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    • 2004
  • We undertook this study to investigate the effects of acupuncture and electroacupuncture on colonic transit time in old age constipation persons. Twenty three volunteers were old age constipation persons(mean age 69.72±2.43 years, mean defecation rate 1.83±0.41/week). Before acupuncture was only to check the radio-opaque markers transit time all the way through gastrointestinal tract. Simple acupuncture was to apply acupuncture therapy for three days. The fourth acupoints(both ST.25, TE.6) were selected and the needle was kept for 15 minutes. Electroacupuncture was same as the simple acupuncture except for applying 2Hz electrical stimulation. After Then we compare with three method Each transit time in the whole colon, right colon, left colon and rectosigmoid colon were checked in the order of before acupuncture, simple acupuncture, and electroacupuncture stimulation. In the before acupuncture stimulation, the transit time in each part of colon was as follows 19.48±1.76 32.74±2.69 25.61±2.13 76.62±7.95 hours. Simple acupuncture stimulation, the transit time was 17.47±1.10 33.10±1.87 24.12±1.65 74.87±3.91 hours. Compared with before acupuncture stimulation, the transit time was significantly shortened(P<0.05), especially in right colon transit time of simple acupuncture stimulation was significantly shortened(P<0.05). Electroacupuncture stimulation, was 16.32±1.97 32.91±2.48 21.53±1.94 71.59±2.82. Compared with the previous two trial, transit time in right colon and rectosigmoid colon were significantly shortened(P<0.05). Acupuncture and electroacupuncture stimulation change on the right colonic transit time in old age constipation persons and rectosigmoid colonic transit time was changed as electroacupuncture stimulation. In other words, old age constipation persons who suffer chronic constipation, acupuncture and electroacupuncture stimulation reduces the total colonic transit time.

미세입자의 중력을 이용한 세포 자극기 개발에 관한 연구 (Micro-bioreactor for Physical stimulation of endothelial cells using micro-bead impact by gravitational force)

  • 김영훈;김태진;정효일
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2008년도 추계학술대회A
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    • pp.1690-1691
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    • 2008
  • Micro cell stimulation device is interested in many researchers because it has several advantages such as saving time and reagents. We introduce new micro-bioreactor using micro bead and conduct cell stimulation experiments to verify effective time because cell have operated by cell-cycle (G1, S, G2, and M phase). Micro-bioreactor was made by soft lithography and CAPE (calf pulmonary artery endothelial cell) was cultured in PDMS (polydimethylsiloxane) micro device for 12 hour and cell starvation process was performed for 24 hours. Micro glass beads were rolled only by slating device every hour during 15 hour because of minimizing other stimulation force like flow and pressure. The result represents that cells under exposed under micro bead stimulation show higher growth rate than normal condition and earlier and later stimulation time are more effective.

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60세이상 노인의 신체 부위별 전기자극시간에 따른 역치 변화에 대한 연구 (A Study on the Influence of Change of Electrical Stimulation Time on Body Regions Affects on Threshold of People Over Age 60)

  • 이재갑;최정현
    • 대한물리치료과학회지
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    • 제16권4호
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    • pp.29-37
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    • 2009
  • Background: The purpose of this study was influence of change of electrical stimulation time on body regions affects on electrical current threshold. Methods: The present study is to examine the effect of silver spike point (SSP) electrical stimulation (1Hz), transcutaneous electrical nerve stimulation (TENS, 100Hz), and interferential current therapy (ICT, 50Hz) from the low back and scapulodorsal and knee joint regions on stimulation-induced current thresholds from the elderly (over sixty) people (male:72, female:91) in senior welfare center. Result: The low back region, but not scapulodorsal and knee joint region, significantly increased the TENS and ICT, but not SSP, electrical stimulation, significantly increased the time-dependent current thresholds in elderly patients. Conclusion: Therefore, these results, in part, suggest that the TENS and ICT were shown to be a more adaptable method of stimulation, and that needed of the development of senile specialized physical therapy and the utilization of senior leisure facilities such as senior welfare center the others.

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3 Stage 2 Switch Application for Transcranial Magnetic Stimulation

  • Ha, Dong-Ho;Kim, Whi-Young;Choi, Sun-Seob
    • Journal of Magnetics
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    • 제16권3호
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    • pp.234-239
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    • 2011
  • Transcranial magnetic stimulation utilizes the method of controlling applied time and changing pulse by output pulse through power density control for diagnosis purposes. Transcranial magnetic stimulation can also be used in cases where diagnosis and treatment are difficult since output pulse shape can be changed. As intensity, pulse range, and pulse shape of the stimulation pulse must be changed according to lesion, the existing sine wave-shaped stimulation treatment pulse poses limitations in achieving various treatments and diagnosis. This study actualized a new method of transcranial magnetic stimulation that applies a 3 Stage 2 Switch( power semiconductor 2EA) for controlling pulse repetition rate by achieving numerous switching control of stimulation coil. Intensity, pulse range, and pulse shape of output can be freely changed to transform various treatment pulses in order to overcome limitations in stimulation treatment presented by the previous sine wave pulse shape. The method of freely changing pulse range by using 3 Stage 2 Switch discharge method is proposed. Pulse shape, composed of various pulse ranges, was created by grafting PFN (Pulsed Forming Network) through AVR AT80S8535 one-chip microprocessor technology, and application in transcranial magnetic stimulation was achieved to study the output characteristics of stimulation treatment pulse according to delaying time of the trigger signal applied in section switch.

경피두개직류자극 적용 시 비활성 전극의 위치가 뇌졸중 환자의 인지반응에 미치는 영향 (Effect of Applying tDCS by Inactive Electrode Placement to Cognitive Response on Stroke Patients)

  • 황기경;이정우
    • 대한임상전기생리학회지
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    • 제11권1호
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    • pp.31-38
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    • 2013
  • Purpose : This study was to identify the effect of cognitive reaction following inactive electrode placement when applying anodal transcranial direct current stimulation over the primary motor cortex. Methods : For this study a total of 28 stroke patients participated. Before applying transcranial direct current stimulation, cognitive reaction was measured (P300 of event related potential, cognitive reaction time), and subjects were randomly assigned to two group. Transcranial direct current stimulation was applied to the scalp with an intensity of $0.04mA/cm^2$ for 15 minutes. All subjects were given an anode transcranial direct current stimulation over the primary motor area and inactive electrodes over the deltoid muscle (group I) and supra-orbital area (group II). Cognitive reactions were measured after applying transcranial direct current stimulation. Results : For this study a total of 28 stroke patients participated. Before applying transcranial direct current stimulation, cognitive reaction was measured (P300 of event related potential, cognitive reaction time), and subjects were randomly assigned to two group. Transcranial direct current stimulation was applied to the scalp with an intensity of $0.04mA/cm^2$ for 15 minutes. All subjects were given an anode transcranial direct current stimulation over the primary motor area and inactive electrodes over the deltoid muscle (group I) and supra-orbital area (group II). Cognitive reactions were measured after applying transcranial direct current stimulation. Conclusion : Thus transcranial direct current stimulation on the primary motor area may help cognitive reaction regardless of inactive electrode placement.

우세측 전완에 적용한 전기자극이 양쪽 손 자율신경계 반응에 미치는 효과 (The Effect of Electrical Stimulation Applied in Dominant Forearm on Autonomic Nervous System Response of Both Hands)

  • 이동걸;서삼기;이정우
    • 대한임상전기생리학회지
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    • 제7권1호
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    • pp.7-10
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    • 2009
  • Purpose : The purpose of this study was to investigate the effect of electrical stimulation applied in dominant forearm on autonomic nervous system response of both hands. Methods : Fourteen healthy subjects (women) received low frequency-high intensity electrical stimulation to one forearm. The subjects assigned to two groups; a ipsilateral stimulation group (n=7) and a contralateral stimulation group (n=7). The electrode attachment was arranged on the forearm of the dominant arm and the electricity stimulus time was set as 15 minutes. Measuring items were the skin conduction velocity, the blood flow, and the pulse rate, which were measured total 3 times (pre, post, and post 10 min.). Results : The skin conduction velocity showed a significant difference according to the change of the time in both hands, but there was no significant difference according to time in the blood flow, and the change of the pulse frequency regardless of stimulus side. Conclusion : These results demonstrate that the low frequency-high intensity electrical stimulation applied dominant forearm can increase selectively only with the skin conduction velocity, which may be helpful for the activation of the sudomotor function of both hands by the activation of sympathetic nerve.

구강자극프로그램이 조산아의 구강식이수행 촉진에 미치는 효과: 사례 보고 (Effects of a oral stimulation program for oral feeding performance in premature infants : case study)

  • 이미지;박지혁
    • 재활치료과학
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    • 제3권2호
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    • pp.49-57
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    • 2014
  • 목적 : 본 연구는 조산아를 대상으로 한 구강자극프로그램 실시가 구강식이수행에 영향을 미치는지를 알아보고자 하였다. 연구방법 : 연구대상은 조산 (25주)로 출생한 아동 1명이었으며, 총 4주간 연구를 진행하였다. 중재방법은 구강자극프로그램으로 뺨, 윗입술, 아랫입술, 윗입술과 아랫입술의 커브, 윗잇몸, 아랫잇몸, 뺨의 내부, 혀의 측면, 혀의 중간을 손가락으로 눌러주며 자극을 주는 9가지 활동으로 구성되었다. 구강식이수행 요인으로는 체중, 하루에 섭취하는 우유의 양, 한 번에 먹는 우유의 양, 한 번 우유 먹을 때 걸리는 시간으로 측정하였다. 각 요인은 매주, 시간에 따른 변화를 측정하였다. 결과 : 중재 실시 후, 대상자의 체중이 증가하였으며 하루에 먹는 우유의 양과 한 번에 먹는 우유의 양도 증가하였다. 한 번 우유를 먹을 때 걸리는 시간은 감소하였다. 결론 : 구강자극프로그램은 조산아의 구강식이 수행을 향상시킬 수 있는 방법이며, 따라서 가정과 치료환경에서 적절히 활용할 수 있을 것이다.

근육의 전기자극에 의한 X선 회절 분석연구 (A Study on the X-ray Diffraction of the Muscle by the Electrical Stimulation)

  • 김덕술;송주영
    • 생명과학회지
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    • 제8권4호
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    • pp.373-380
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    • 1998
  • A considerable change observed in X-ray diffraction during the muscle contraction was that the movement of myosin head and conformational change of contractile monecules were occurred in the muscle contraction. Time slice requires tension peak after the onset of stimulation and the height of tension peak depends on the number of twitch cycle. The intensity of I$_{11}$, I$_{10}$, 143${\AA}$ reflection is measured with 5ms time resolution and is recorded in isometric tension. The peak height of I$_{11}$ and 143${\AA}$ intensity is changed after the onset of a stimulation I$_{i}$, and the length of twitch is shortened by successive twitches in the case of stimulation TI$_{i}$. On the other hand, the peak height of I$_{11}$ and 215${\AA}$ intensity starts to decrease at the 1st twitch and remains constant at low peak hight without appreciable recovery during the contraction term. In the case of uccessive twitch stimulation, the myosin heads of muscle are once moved from their resting position and never returned to their initial position.

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