• Preventive Nutrition and Food Science
• /
• 제4권3호
• /
• pp.180-183
• /
• 1999

Seaweeds is a rich sources of dietary fibers exerting a number of physiological properties. However, the reported dietary fiber contents of seaweeds are not consistent and vary widely. Also. a limited number of studies on the biological effects of specific seaweeds have been reported. In this study, water-holding capacity, viscosity and antixidantive activity of major dietary seaweeds were measured to assess their physiological effects. Results showed that total dietary fiber contents ranged from 28 to 51% of dried weight, and large proportions of dietary fiber were insoluble fibers. Water-holding capacity was highest in sea mustard being 1310% , while laver, sea tangle, and green laver exhibited 943, 854 and 815%, respectively. The viscosity of seaweed samples was 20 to 40 cP in sea mustard and sea tangle, while laver and green laver possessed much lower values. All seaweed samples revealed a weak, albeit significant electron donating ability. Also, lipid peroxidation was reduced by 7 to 18%. However, there was no difference in antioxidative activity among seaweeds and sample concernations used. These results imply that most commonly used seaweeds possibly exert parts of their physiological effects through their water-holding, gel-forming , and/or antioxidative activities.

• Journal of Korean Biological Nursing Science
• /
• 제17권3호
• /
• pp.219-227
• /
• 2015

Purpose: This study was conducted to review physiological mechanisms of internet addiction and to construct a theoretical framework for cognitive behavioral therapy for internet addicts. Methods: We searched for relevant literature in the PubMed and RISS databases using the terms "internet addiction", "internet game addiction", "internet abuser", and "online game". Only English, full-text articles published from 2000 to 2015 were included in this review of physiological indicators of internet addiction. Finally, 12 articles were selected for review. Results: The theoretical framework developed based on the review proposes that excessive internet use itself may induce physiological stress responses with an increase of stress-related hormones and neurotransmitters. Prolonged abnormal responses of these physiological features produce negative structural and functional changes in the prefrontal cortex, which is mainly involved in cognitive and executive functions. These changes may result in decreased cognitive function. As a stressor, excessive internet use leads to transforming voluntary use into involuntary, habitual use and thus promotes the development of internet addiction. Conclusion: The proposed theoretical framework encompasses cognitive processes that may contribute to the effects of internet use-induced physiological stress on internet addiction. We believe that this framework has important implications for developing cognitive behavioral strategies for internet addicts.

• 한국조경학회지
• /
• 제33권6호
• /
• pp.1-11
• /
• 2006

The purpose of this study was to investigate the influence of natural landscapes in the context of work environments. The study examined the impact of natural landscapes on urban office workers' stress reduction and cognitive performance, using physiological, psychological, and cognitive measures. One-hundred-twenty urban office workers participated in the experiments. The physiological measures used were GSR (galvanic skin response) and IBI (interbeat interval), and the psychological measure was ZIPERS (Zucherman Inventory of Personal Reactions). Cognitive performance was measured using a mental arithmetic test that had been developed by a pretest. The results from the physiological, psychological, and cognitive measures converged to indicate that the natural landscape had more beneficial effects in relieving both psychological and physiological stress and in enhancing cognitive performance of the of office workers than the city landscape. The results suggest wide applications in the fields of workers' well-being and landscape research. First, the results can provide reliable information for promoting natural landscaping in work places in order to relieve worker stress and enhance cognitive performance. Second, the results provide an example for future empirical landscape research using multiple measurements, such as psychological, physiological, and cognitive tests. Third, they can foster experimental research to investigate the relationship between stress reduction and natural landscapes.

• Korean Journal of Acupuncture
• /
• 제25권2호
• /
• pp.33-41
• /
• 2008

Objectives : The aim of this study was to understand electro-physiological peculiarity in meridian and acupoints, and understand acupuncture therapy mechanism as an electro-physiological viewpoints. Methods : I reviewed the articles on the electro-physiological peculiarity of the meridian and acupoints Results and Conclusions : It has been reported that meridian and acupoints have high-electrical conductivity and row-electrical resistance. On this scientific basis, to understand the mechanism of acupuncture therapy, I made some hypotheses. At first, there is electro-property in meridian and acupoint. The second, energy flowing in meridian is related with electro-property. The third, there is electronic interaction between practitioner of acupuncture therapy and patient receiving acupuncture therapy. The forth, acupuncture effects which may be expressed by the electro-charge capacity is transfered between practitioner and patient via acupuncture. Electro-charge induced via acupuncture in practitioner may be an important factor that initiate the electro-charge changes in meridian and acupoint of patient.

• 한국의류산업학회지
• /
• 제7권1호
• /
• pp.75-80
• /
• 2005

The purpose of this study was to investigate the effects of silt ventilation system on physiological responses. We measured rectal temperature, local skin temperature, clothing microclimate, blood pressure, heart rate, energy metabolism, body weight loss and subjective sensation during 70 minute, 50 min exercise period and 20 min rest period. The five women subjects randomly wore sportswear without slit ventilation system(NS sportswear) and sportswear with slit ventilation system(S sportswear) under the environmental condition of $25^{\circ}C$, 50%RH. The results of this study are as follows; Rectal temperature, mean skin temperature, clothing microclimate, blood pressure, heart rate, energy metabolism and body weight loss were significantly lower level in 'S sportswear'. In 'S sportswear', subjects replied less hot, less uncomfortable and less wet. Slit ventilation system can be used for bellow effect which is meaningful device of convection during exercise. We could find out that 'S sportswear' has advantage in physiological function.

• 정형스포츠물리치료학회지
• /
• 제14권2호
• /
• pp.127-133
• /
• 2018

Purpose: This study investigated the effects of changing the tilt angle of the exercise bed on physiological characteristics of trapezius, multifidus, and hamstring muscle function. Methods: Twenty elderly who complains of back and lumbar pain or discomfort participated in this study (average age: $64.70{\pm}4.55$ years). The physiological characteristics, including muscle tone (F), dynamic stiffness (S), and elasticity (D) of trapezius, multifidus, and hamstring muscles were measured by a Myoton device at three tilt angles (0, 15, and 30 degrees) during exercise. Results: The muscle tone, dynamic stiffness, and elasticity of the right trapezius and left hamstring muscle showed significant differences (p<0.05) according to exercise bed tilt angle, while the other muscles showed no significant differences. Conclusions: Our results demonstrate that physiological characteristics of the upper and lower extremity muscles are affected ipsilaterally, according to the tilt angles of the exercise bed.

• 한국산림과학회지
• /
• 제97권6호
• /
• pp.634-640
• /
• 2008

본 연구는 산림욕의 생리적 효과를 규명하기 위하여 수행되었다. 피험자로는 과거 병력이 없는 12명의 건강한 남자 대학생($21.6{\pm}2.1$세)이 참가하였다. 실험 첫날 6명의 피험자는 숲 실험에 참가하였으며, 나머지 피험자는 도시 실험에 참가하였다. 또한 실험 둘째날은 실험 순서에 의한 영향을 최소화하기 위하여 첫째날과 반대의 실험에 참가하였다. 피험자는 의자에 앉아서 15분간 숲과 도시의 경관을 감상하였다. 생리지표로서 심박변동성(Heart Rate Variability)과 혈압을 측정하였다. 숲 경관을 감상할 때 피험자들의 수축기 혈압과 심박변동성의 LF/(LF+HF)가 도시경관을 감상할 때와 비교하여 유의하게 낮은 결과를 얻을 수 있었다. 또한 숲 경관을 감상할 때 심박변동성의 HF가 유의하게 높은 결과를 얻을 수 있었다. 이 결과를 통하여 산림욕의 릴렉스 효과를 밝힐 수 있었다.

• 한국식품영양과학회지
• /
• 제30권4호
• /
• pp.721-725
• /
• 2001

성장 시기에 따른 돌산 갓의 부위별 즙액 첨가에 의한 생리기능성을 연구하였다. 생리기증성을 평가하기 위하여 돌산갓을 분쇄하여 여과하고 원심 분리하여 얻은 상등액을 여과하여 시료로 사용하였다. 세포독성 평가를 위한 돌산 갓 즙액의 농도는 1%, 3%, 6% 로 조제하여 간암세포에 첨가하였다. 세포독성은 갓 즙액 6% 첨가 시에 성장기간이 20일인갓의 개량종 뿌리에서 78.2%로 가장 높게 나타났다. DPPH 방법에 의한 항산화 활성 평가에서는 20일 자란 재래종 잎이 80.4%로서 가장 높게 나타났다. ACE 저해 활성으로는 60일 자란갓에서는 개량종 잎이 94.0%로서 가장 ACE 저해율이 높은 것으로 나타났다. 따라서 돌산 갓의 부위별 첨가에 의한 생리기능성 평가에서 재래종과 개량종 사이에 큰차이를 발견할 수는 없었으나 부위별로 항암성은 뿌리에서 항산화성과 ACE 저해율은 잎에서 비교적 활성이 높게 나타났다.

• 인간식물환경학회지
• /
• 제24권4호
• /
• pp.429-439
• /
• 2021

Background and objective: This study verified the physiological and psychological effects of plant fragrance therapy to analyze whether the therapy has a forest healing effect on maladjusted soldiers. Methods: This study was conducted from March 14 to May 31, 2020 according to the Green Camp curriculum for 2 weeks per recruit class. Thus, plant fragrance therapy was implemented twice each for three recruit classes. Each session of the program was carried out for 4 hours from 1 p.m. to 5 p.m. The venue was the garden within the camp and the forest nearby. Forest healing activities using plant fragrances were led by 1 forest education specialist and 1 assistant. The effects of plant fragrance therapy for maladjusted soldiers were analzed analyzed by quantifying physiological and psychological changes through measuring brain waves and stress levels before and after the therapy. Results: As a result of analyzing BRQ and SQ to determine the physiological and psychological healing effect of plant fragrance therapy, both the left and right brain showed higher BRQ and SQ after the therapy with statistical significance. This indicates that plant fragrance therapy on maladjusted soldiers helped positively stabilize their negative psychological and behavioral dispositions, and stabilization of brain waves lowered physical and mental stress and improved self-regulation and immunity. On the other hand, there was no significant difference in ATO. This is the result of analyzing the stress-coping mechanism. Troubleshooting (t = -2.702, df = 61, p = .009), emotional remission (t = -2.173, df = 61, p = .034), pursuit of help (t = -3.286), df = 61, p = .002), and wishful thinking (t = -3.714, df = 61, p < .001) showed statistically significant results. Conclusion: Applying plant fragrance therapy to maladjusted soldiers positively stabilized their negative psychological and behavioral dispositions and helped their self-regulation. Thus, plant fragrance therapy has psychological and physical forest healing effect on maladjusted soldiers.

• 대한간호학회지
• /
• 제32권5호
• /
• pp.716-726
• /
• 2002

The purpose of this study was to explore the effects of hand reflexology on the physiological.emotional responses and immunity of the patients with chronic illness. This study looked specifically at patients with chronic renal failure(CRF) and cancer patients. Method: This study was designed as a quasi-experimental nonequivalent control group pre and post test. Subjects were 54 patients who received dialysis and chemotherapy in one hospital. Thirty-one patients were assigned to the experimental group and 23 to the control group. The hand reflexology was applied to both hands of the experiment group for ten minutes each time, 5 times during three days. For data collection, physiological lab levels, immune cells of blood and questionnaires for emotional responses were measured before and after the program. Result: BT of the experiment group was decreased significantly on both of the 1st and the 5th application. PR & BP were decreased significantly on the 1st times, but not 5th times. Hb levels of the experimental group were significantly increased. And emotional responses, vigor and mood scores of the experiment group were significantly increased. B cell & CD19 were increased significantly on the experiment group. Suppressor T cell and NK cell showed significant decrease after the program, but no significant differences between the groups. Conclusion: We have found that the hand reflexology helps the chronic patients to improve physiological.emotional responses and the immune reaction. Through this result, the hand reflexology is effective as a intervention of psychoneuroimmunologic function.