• Title/Summary/Keyword: skeletal muscle fatigue

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Analysis of Published Research in the Journal of Muscle and Joint Health from 2008 to 2020 (근관절건강학회지 게재 논문 분석: 2008년부터 2020년까지)

  • Park, Mi-Sung;Lee, Kyung-Sook;Shin, Gyeyoung;Woo, Soo-Hee;Lim, Kyung-Choon;Choi, Heejung;Jin, Soo-Ji;Park, Yeon-Hwan
    • Journal of muscle and joint health
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    • v.29 no.1
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    • pp.69-80
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    • 2022
  • Purpose: To identify research trends in the Journal of Muscle and Joint Health. Methods: In total, 315 studies published between 2008 and 2020 in the Journal of Muscle and Joint Health were reviewed using analysis criteria developed by the authors Results: Most participants were adults or older adults, they mostly had arthritis. The types of research design were descriptive research (46.4%), quasi-experimental design (21.9%), randomized controlled trial (1.9%), and qualitative research (4.1%). The occupation of most authors was professor in universities (61.0%). Data were collected mostly in hospitals (41.6%) or communities (24.4%) using a questionnaire (52.4%). Written consent was obtained at 75.6% and 47.9% of studies were approved by the Institutional Review Board (IRB). The instruments measuring physical concepts such as pain, flexibility, sense of balance and fatigue were mostly used. The most common interventions in experimental studies were physical interventions, with the main being exercise. Key words were categorized into four nursing meta-paradigms: human, health, environment and nursing. The most frequently reported key words were included in the health domain. The most frequently used key words were physical intervention, older patient, osteoarthritis, pain and depression. Conclusion: The results suggest that more research studies targeting various age groups related to muscle and joint health are required. Additionally there is a need to increase the number of qualitative studies, randomized experimental studies, and systematic review studies. It is necessary to pay attention to compliance with research ethics publication regulations.

TROGLITAZONE, A NOVEL ANTIDIABETIC DRUG -NEW AVENUE FOR TREATING INSULIN RESISTANCE-

  • Horikoshi, Hiroyoshi
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1998.05a
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    • pp.1-4
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    • 1998
  • Impaired insulin action in Type 2 diabetes is thought to lead to hyperglycemia, with both environmental and complex genetic factors playing key roles. Although the primary lesion in Type 2 diabetes is unknown, a number of studies suggest that metabolic defects in the liver, skeletal muscle and fat, and pancreatic ${\beta}$-cells contribute to the disease. These metabolic abnormalities are characterized by the overproduction of hepatic glucose, impaired insulin secretion, and peripheral insulin resistance. In current pharmacological treatment of Type 2 diabetes, sulfonylurea (SU) drugs have mainly been used as oral hypoglycemic drugs to stimulate endogenous insulin secretion from ${\beta}$ cells. SU drugs, however, sometimes aggravate the disease by causing fatigue of the pancreatic ${\beta}$ cells, which leads to reduced drug efficacy after long-term treatment. This class of drugs also leads to enhanced obesity arising from the stimulation of endogenous insulin secretion in obese Type 2 diabetic patients, plus an increased incidence of SU-induced hypoglycemia. Since 1980, a major challenge has been made by us to develop a potential pharmacological therapy for the treatment of insulin resistance in peripheral tissues and/or suppression of abnormal hepatic glucose production in Type 2 diabetic patients. Such a drug would be expected to have fewer side effects and retain long-term efficacy.

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Characteristics of Surface Electromyography During Strength Training of 12 weeks (12주 근력강화훈련 동안 표면근전도 신호의 특성)

  • Shin, Hwa-Kyung;Cho, Sang-Hyun;Cha, Kwang-Suk
    • Physical Therapy Korea
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    • v.10 no.1
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    • pp.109-128
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    • 2003
  • This study tested whether repeated measurement of median frequency (MDF)-related variables could express the muscle power changes during a 12-week DeLome strengthening program, by using consecutive overlapping FFT (Fast Fourier transformation) and integrated EMG (IEMG) from surface EMG data for isometric and isotonic exercise. To evaluate the effect of training, the following were recorded every 3 weeks for the elbow flexors and knee extensors of 5 healthy male volunteers: MVC, lRM, limb circumference, and surface EMG during isometric MVC or isotonic contraction at 10RM load. From the EMG data, IEMG and variables from a regression analysis between MDF and time were obtained. MVC, lRM, IEMG, and initial MDF increased linearly over the training period. The fatigue index and slope of the regression line increased temporarily until the 6th week and decreased thereafter. From these results, there appeared to be enhanced neural recruitment of fast twitch fibers in the first 6 weeks and continued enhancement in the recruitment and hypertrophy of fast twitch fibers, which led to increased fatigue resistance, over the last 6 weeks. Accordingly, the MDF and IEMG analysis technique could demonstrate the effect of the program detected significant changes in both isometric and isotonic contractions. EMG analysis methods can be used to estimate the electrophysiological and histological changes in skeletal muscles during a strengthening program.

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A Comparative Study on the Dietary Habits, Life Habits, Physical Symptoms and Body Composition of University Students by Gender Differences in Incheon City (인천지역 남녀 대학생들의 식습관, 건강관련 생활습관, 신체증상 및 체성분에 관한 비교 연구)

  • Jang, Jae-Seon;Hong, Myung-Sun
    • The Korean Journal of Food And Nutrition
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    • v.26 no.4
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    • pp.928-935
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    • 2013
  • This study was designed to investigate the dietary habits, life habits, physical symptoms, and body composition of male and female students attending college in incheon, based on which to encourage proper dietary habits among and enhance the physical and psychological health of college students. The effects of personal characteristics (such as gender, grade level, residence type, means of transportation), health relative life habits (exercise, smoking and alcohol consumption), dietary habits, physical symptoms and body composition measurement were analyzed by using the questionnaire and Inbody. The subject pool was composed of 96 male and 149 female students. Smoking, drinking, exercise, and fruit intake showed significant differences between the genders (p<0.05), whereas meat intake was not significantly different (p>0.05). Differences on dietary habits and the intake of fruit showed significant differences (p<0.05) between the genders. Especially, more female than male students showed a higher frequency of fruit intake. Physical symptoms such as headache, common cold, dizziness, easy fatigue, poor concentration, indigestion and constipation showed significant differences (p<0.05) between the genders, whereas stomatitis, anorexia and pale face were not significantly different (p>0.05). Differences between the genders on body composition, height, weight, BMI, muscle soft lean mass, body fat mass, skeletal muscle mass and waist-hip ratio were also significantly different (p<0.05). The correlation analysis of college students by gender was negative between intake of milk and physical symptoms (p<0.01), whereas intake of cooked food and physical symptoms showed a positive correlation (p<0.01, p<0.05).

Protective Effect of Ferments of Hot-water Extract Mixture from Rhodiola sachalinensis and Red Ginseng on Oxidative Stress-induced C2C12 Myoblast (C2C12 근육세포의 산화적 손상에 대한 홍경천-홍삼 추출물 혼합액 발효물의 보호효과)

  • Yoon, Bo-Ra;Kim, Young-Hyun;Lee, Jong-Seok;Hong, Hee-Do;Rhee, Young-Kyoung;Cho, Chang-Won;Kim, Young-Chan;Lee, Ok-Hwan
    • The Korean Journal of Food And Nutrition
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    • v.26 no.3
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    • pp.485-491
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    • 2013
  • Rhodiola spp. and red ginseng have been used for food and medicinal applications in disease chemoprevention in many Asian countries. Increased oxidative stress by reactive oxygen species (ROS) has been proposed to be a major cause of muscle fatigue. The present study was designed to investigate the protective effects of a fermented hot-water extract mixture from Rhodiola sachalinensis and red ginseng (MFR) on cell damage and the antioxidant enzyme system in $H_2O_2$-induced oxidative stress in skeletal muscle cells. C2C12 myoblasts were treated with various concentrations of NFR (non-fermented Rhodiola sachalinensis extract), FR (fermented hot-water extract from Rhodiola sachalinensis) and MFR for up to 5 days after the standard induction of differentiation, followed by semi-quantitative RT-PCR. MFR treatment dose-dependently protected oxidative damage of C2C12 cells. The treatment with MFR also enhanced mRNA expressions of MyoD, Cu/Zn SOD, Mn-SOD and GPX up to 16%. These results indicate that MFR exerts an anti-oxidative effect through a mechanism (s) that may involve the up-regulation of antioxidant enzymes, which may be important for the cellular redox environment in muscle cells.

Clinical features of COVID-19 as presented in journal articles : A Korean Medical Approach (COVID-19 임상표현에 대한 한의학적 접근 -국내외 논문을 중심으로-)

  • Kim, Jong-hyun;Ahn, Jinhee;Kim, Sanghyun
    • Journal of Korean Medical classics
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    • v.35 no.1
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    • pp.1-32
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    • 2022
  • Objectives : This paper examines major symptoms representation in COVID-19 patients as groundwork for development of an effective clinical data collection format in Korean Medicine. Methods : Major symptoms representation in COVID-19 related papers published worldwide were collected. Corresponding symptoms in Korean Medicine were then examined, followed by discussion of symptomatic features that require further consideration in regards to a more systematic clinical data collection. Results : Of 256 papers, most papers listed fever and cough while symptoms such as difficulty breathing, diarrhea, muscle pain, headache, nausea, fatigue, chest pain, phlegm, nasal discharge were also mostly listed. Clinical representations could be categorized into general symptoms, throat symptoms, chest symptoms, head and facial symptoms, gastrointestinal symptoms, musculo-skeletal and cutaneous symptoms, psychiatric symptoms and sensory problems. Conclusions : Although each clinical representation could be likened to certain clinical representations of Korean Medicine, the variety of symptoms were too limiting and lacking in detail to be applied in the pattern identification[辨證] of Korean Medicine. For effective clinical data collection and analysis in the future, symptom change according to time, comparison between location, climate and ethnicity, existence of interior symptoms when diagnosing exterior symptoms, deficiency-excessiveness of blood patterns, consciousness levels, etc., need to be considered in establishing criteria for symptom evaluation.

The clinical observation of patient with Headache Treated by Trigger point acupuncture therapy (발통점(發通點)을 이용(利用)한 두통(頭痛) 치험례(治驗例) 보고(報告))

  • Lee Seung-Yeon;Kim Jang-Hyun
    • The Journal of Pediatrics of Korean Medicine
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    • v.12 no.1
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    • pp.133-143
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    • 1998
  • Myofascial pain syndrome is one of the pain syndrome resulted from myofascia which covered muscles and clinically characteristic feature by sensitive trigger point in skeletal muscles and referred pain reactivated by stimulating each trigger point. The origin of headache are local lesion such as head, chest, abdominal organ, systemic lesion with fever or in toxic state. the other factors are consciousness, personality, anxiety, depression, which cause muscle strain in physiological environment. The Oriental Medical therapy for headache has herb medication and acupuncture. especially acupuncture therapy has not only classical systemic acupuncture(體鍼) but also neo-acupuncture(新鍼) such as commonly using auricular acupuncture(耳鍼) and manual acupuncture (手鍼), recently trigger point acupuncture is used. The author analyzed 27 cases of patient with headache treated by trigger point acupuncture therapy in Dong-yu Oriental Medical Hospital from March 1st 1997 to February 28th 1998. The following results were obtained. 1. The sex ratio of the female was 59.26%(16 cases) and male was 40.74%(11 cases), the ratio of high school student was 62.96%(17cases) as first. 2. The headache duration ratio of 2-3 years was 37.04%(10 cases) as first, 1-2 years was 25.93%(7 cases) as second. 3. The portion ratio of whole headache was 33.33%(9 cases) as first, lateral headache was 29.63%(8 cases) as second 4. The combined symptoms ratio of anorexia was 40.74%(11 cases) as first, fatigue was 33.33%(9 cases) as second, neck stiffness and dizziness was each 25.93%(7 cases) as third. 5. The therapeutic duration ratio of below 1 week was 29.63%(8 cases) as first, 2-3 weeks was 22.22%(6 cases) as second, 1-2 weeks and 3-4 weeks was each 18.52%(5 cases) as third. 6. The ratio of family history was 11 cases(40.74%). mother with headache was 6 cases, father was 3 cases, and brothers & sisters was 2 cases. 7. The herb medication ratio of Chungsanggyuntongtang(淸上?痛湯) was 37.04%(10 cases), Kamiondamtang(加味溫膽湯) was 22.22%(6 cases), Hyangsapyunguisan(香砂平胃散) was 18.25%(5 cases) etc. 8. The remedial effect ratio of good was 25.93%(7 cases), fair was 48.15%(13 cases), not improved was 7.41%(2 cases), side effect was 3.70%(1 cases), and unknown was 14.81%(4 cases).

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