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고유수용성 감각 증진운동이 균형 능력 및 근력의 향상에 미치는 효과
정순탁,황지혜,제세영,박원하,김현숙,이용택 대한재활의학회 2004 Annals of Rehabilitation Medicine Vol.28 No.2
Objective: To investigate the effects of lower extremity proprioceptive training on postural control and strength of the knee and ankle muscles. Method: Twenty-two healthy subjects (age 27±4 yrs) were randomly assigned to a training (TRN, n=11) or a control (CTL, n=11) group. TRN group participated in the dominant leg proprioceptive training that was performed on a balance board and mini-trampoline without strength training for 6 weeks. All subjects were evaluated for leg muscle strength and postural sway using the isokinetic device and force platform before and after the training. Assessed parameters were 1) concentric and eccentric strength of knee flexor/ extensor and concentric strength of ankle plantar flexor/ dorsiflexor and invertor/evertor 2) the standard deviation of the postural sway with eyes open or closed. Results: Statistically significant improvements in both medial-lateral and anterior-posterior parameters of postural sway with eyes closed were observed after training in TRN group (p<0.05) compared to CTL group. But no significant changes in any isokinetic strength parameters were observed after training in TRN group. Conclusion: The proprioceptive exercises that we used could improve one-leg balance without significant strength gain after 6 weeks training. (J Korean Acad Rehab Med 2004; 28: 151-156)
척수 손상 토끼의 근 신장 반사에서 척수강내 바클로펜 주입법의 효과
우영태,성덕현,이양균,정준용,정순탁,박성민,최영권 대한재활의학회 2004 Annals of Rehabilitation Medicine Vol.28 No.4
Objective: To develop an experimental model that is useful to evaluate the effect of antispastic medication administered intrathecally and to titrate the intrathecal baclofen effect quantitatively by using muscle stretch reflex. Method: Ten rabbits were laminectomized posteriorly and intrathecal catheter was inserted. Then the spinal cords were contused by 12.5 g×20 cm weight drop around 12th thoracic vertebra. After 8~12 days, muscle stretch reflex was measured before intrathecal baclofen injection (ITBI) and after ITBI 30 minutes, 60 minutes, and 120 minutes. Rabbits' triceps surae were dissected and stretched 5 mm at the rate of 2 mm/sec using a step motor. The change of muscle tension was graphed into the time (length)-tension curve. The slope in the time (length)-tension curve was defined as stiffness index (SI). Results: The measurement of muscle stretch reflex was available in 5 of 10 spinal cord injured rabbits. The proportion of SI reduced significantly at 60 minutes and 120 minutes compared to baseline (p=0.005, p<0.001). Conclusion: Our data proved the antispastic effect of ITBI quantitatively by using muscle stretch reflex. We concluded that the quantitative measurement method of the antispastic effect of ITBI will be useful in evaluating antispastic effect by intrathecal administration of the other antispastic medications.
Shin Hyun Young,Kim Hoon,정순탁,Jeong Eun-Jin,Lee Kyung-Haeng,Bae Yun-Jung,Suh Hyung Joo,Keum‑Il Jang,Yu Kwang-Won 한국응용생명화학회 2021 Applied Biological Chemistry (Appl Biol Chem) Vol.64 No.6
Centella asiatica L. Urban (CA) is a valuable medicinal herb that contains various bioactive secondary metabolites. In the present study, the harvested CA was divided into whole plant and leaf parts, and were heated-air-dried or freezedried. The dried CA was extracted under various extraction conditions to obtain 16 extracts, and their antioxidant activities were examined. Twelve types of secondary metabolites (five polyphenolic acids, four triterpenoids, and three flavonoids) were quantified in each extract. Finally, the intercorrelations between secondary metabolites and antioxidant activities were analyzed through statistical analyses, such as Pearson correlation coefficient, scatter plotting, and principal component analysis. The antioxidant capacities of CA might be primarily influenced by major triterpenoids such as madecassoside and asiaticoside, which showed high content in the ethanol extracts of freeze-dried leaf parts. The present study provides a valuable groundwork for the development of optimal extraction processes for C. asiatica L. as an antioxidant material.