• Journal of the Korean Applied Science and Technology
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• v.35 no.3
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• pp.905-913
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• 2018

The purpose of this study is to investigate the difference of muscle activity according to application of a foam roller during pilates. The 8 male subjects were selected and quadruped position, bridge, and core control movement of pilates were randomly assigned to 9 movements on a static mat motion, static foam-roller motion, and dynamic foam-roller actions. This program was conducted once at intervals of 1 week. The muscle activity of erector spinae, rectus abdominis, external oblique, gluteus medius, rectus femoris, and biceps femoris were measured and the collected data was analyzed by one-way ANOVA. First, in the quadruped, the rectus abdominis and external oblique, rectus femoris of the dynamic foam-roller actions showed higher muscle activity than the static mat motion and the static foam-roller motion(p <.001), gluteus medius muscle activity was also significantly higher (p <.05). biceps femoris were significantly higher in static foam-roller motions than in static mat-motion and dynamic foam-roller actions(p <.05). Second, biceps femoris muscle activity was highest in dynamic foam-roller actions than static mat-motion and static foam-roller motions during bridge(p <.001). Third, in the sitting core control, the rectus abdominis and gluteus medius of the dynamic foam-roller actions showed higher muscle activity than the static mat motion and the static foam-roller motion(p <.001). and activity of erector spinae muscle was also significantly higher (p <.01). external oblique were significantly higher in static mat-motion than in static foam-roller motions and dynamic foam-roller actions(p <.05). Considering the muscle activity during pilates exercise, it would be more effective to apply the method and difficulty.

• Korean Journal of Pharmacognosy
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• v.16 no.2
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• pp.65-72
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• 1985

These studies were conducted to investigate the effect of 'Inchungbaek' water extract on analgesic and sedative actions, the relaxing action of isolated ileums, vasodilating action and blood pressure. The results of these studies were summarized as follows: Analgesic and sedative actions of 'Inchungbaek' were recognized in mice and rats. The relaxing action of isolated ileums were seen in mice and rabbits, antagonist action was seen acetylcholine and $BaCl_2-induced$ contraction of isolated ileums, and then recognized direct action in the ileum smooth muscle. Hypotensive and vasodilating actions due to vascular smooth muscle relaxation were noted in rabbits and cats.

• Journal of muscle and joint health
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• v.22 no.1
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• pp.40-47
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• 2015

Purpose: The purpose of this study was to identify factors influencing on performance of preventive actions to be exposed to infection in emergency nurses. Methods: Participants were 200 emergency nurses working in a regional emergency medical center, 4 local emergency medical centers, and 5 local emergency medical facilities in B city. The data were analyzed with descriptive statistics, independent t-test, ANOVA, Scheff$\acute{e}$'s test, Pearson's correlation coefficients, and stepwise multiple regression analysis using SPSS/WIN 21.0 programs. Results: There was no difference in performance of preventive actions to be exposed to infection by socio-demographic and job-related characteristics. The results of stepwise multiple regression analysis showed that levels of perception of preventive actions to be exposed to infection (${\beta}$=.40, p<.001) and protective environment on exposure to infection (${\beta}$=.22, p<.001) were significantly associated with performance of preventive actions, explaining 26.3% of the variance. Conclusion: In conclusion, improving performance of preventive actions to be exposed to infection is important to protect emergency nurses from exposure to infection. Thus, efforts to enhance protective environment on exposure to infection and to improve perceptions of preventive actions to be exposed to infection are necessary to improve the performance of preventive actions in emergency nurses.

• The Korean Journal of Pharmacology
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• v.6 no.1
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• pp.37-44
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• 1970

The author studied the actions of autonomic drugs on the uterine muscle isolated from Ditrema temmincki Bleeker, and the results obtained were summerized as follows. 1) The motility of the fish uterus was stimulated by epinephrine, norepinephrine and phenylephrine, but inhibited by isoproterenol. 2) The inhibitory effects of isoproterenol on the fish uterus was not affected by phenoxybenzamine, but blocked by propranolol. 3) The excitatory effects of phenylephrine on the fish uterus were blocked by phenoxybenzamine, but stimulated by propranolol. 4) The excitatory effects of epinephrine and norepinephrine were reversed by phenoxybenzamine and stimulated by propranolol. 5) The motility of the fish uterus pretreated with phenoxybenzamine and propranolol was not affected by isoproterenol, phenylephrine, epinephrine and norepinephrine. 6) It seemed that the uterine muscle of the fish had both alpha excitatory and beta inhibitory receptors. 7) The motility of the uterus of the fish was stimulated by acetylcholine. The stimulating action of acetylcholine was antagonized by atropine. 8) The motility of fish uterus was not affected by nicotine and DMPP. The actions of these drugs were not affected by pretreatment with hexamethonium and atropine. 9) It is, therefore, concluded that there are not present ganglia cells furnished with cholinergic fiber in the uterine wall of the fish.

• Korean Journal of Applied Biomechanics
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• v.18 no.4
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• pp.171-177
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• 2008

This work intends to investigate the effects of pedaling directions on the muscle actions during the bicycle's uphill propulsion. A test rig was developed that consists of a bicyle with a special planetary geartrain, a height-adjustable treadmill, a rear-wheel support and a magnetic brake. A three-dimensional motion analysis was performed for measuring kinematic characteristics of the forward backward pedaling and the electromygraphy(EMG) measurements were simultaneously performed for estimating the muscle actions of the leg. In this work, four muscles are considered including Gastrocnemius muscle(GM), Vastus lateralis(VL), Tibialis anterior(TA) and Soleus(SOL) while the uphill slope is varied from $0^{\circ}$ to $6^{\circ}$. Raw EMG signals were first processed through the root-mean-square(RMS) averaging and then ensemble curves were derived by averaging the EMG RMS envelopes over 50 consecutive cycles. Results show that both the kinemactic characteristics and the muscle actions are significantly affected by the pedaling direction. The crank speed of the forward pedaling is higher but the difference in speed is reduced as the slope is increased. The ensemble curves of the :ac signals clearly exhibit some differences in their patterns, peak values and the corresponding locations with respect to the crank angle. The peak values of most EMG signals are higher for the forward pedaling regardless of the slope magnitude. However, the averages of the EMG signals are not observed to have a similar relationship with the pedaling direction, which seems to be affected by several factors such as less experience of the participants' backward pedaling. inappropriate bicycle design for the backward pedaling. These limitations will be further considered in future work.

• Korean Journal of Pharmacognosy
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• v.15 no.4
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• pp.188-193
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• 1984

It was previously indicated that 'Samulanshintang' had been examined for effects of the anticonvulsive, antipyretic, analgesic, sedative and antispasmodic actions. In order to investigate the effect on the cardiovascular system and anemic rabbits induced by phenlhydrazine HCl, pharmacological studies have been carried out with extract. The results of this investigation were summarized as follows: The relaxation of bronchial smooth muscle and antihistamine action were recognized. Antihypertensive and vasodilating actions due to vascular smooth muscle relaxation were noted in frogs and rabbits. 'Samulanshintang' lowered the rate of anemia induced by phenylhydrazine and rapidly recovered from the anemia state.

• The Korean Journal of Physiology
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• v.23 no.1
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• pp.1-12
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• 1989

• Korean Journal of Veterinary Research
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• v.27 no.1
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• pp.35-40
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• 1987

Higenamine, a benzyltetrahydroisopuinoline analog isolated from aconite tuber, has potent isotropic action. Recent studies suggest it may have beta receptor agonistic property in that its inotropic action is blocked by propranolol in isolated rabbit heart. However, no study has been carried out on other organs than heart. Higenamine is expected to have pharmacological actions on smooth muscle on the ground that it has catecholamine moiety and tetrahydrosioquinoline nucleus in its chemical structure, both of which are well known to have smooth muscle relaxation effects. Therefore present study was aimed at determining whether higenamine has bronchodilating effect in isolated guinea pig trachea smooth muscle rich in adrenergic beta receptor and if any, it has agonistic effect on beta receptor. The results were summarized as follows : 1. Higenamine had remarkable bronchodilating effect in guinea pig tracheal smooth muscle in a dose-dependent manner. 2. Bronchodilator effect of higenamine in isolated guinea pig tracheal smooth muscle was blocked competitively by propranolol. The $pD_2$ value of higenamine in isolated guinea pig tracheal smooth muscle was 5.65 and the $pA_2$ value of propranolol against higenamine in the same preparation was 7.97.

• Journal of International Academy of Physical Therapy Research
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• v.11 no.4
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• pp.2212-2220
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• 2020

Background: Repetitive damage to the ankle joint causes chronic ankle instability, and studies comparing the effects of exercise in open and closed chains as a treatment method are very rare. Objectives: To investigate the effects of open and closed kinetic exercises on muscle activity and dynamic balance of ankle joint in adults with chronic ankle instability. Design: Single-blind randomized controlled trial. Methods: The selected 30 subjects are randomly divided into open kinetic chain exercise experimental group (EGI, n=10), closed kinetic chain exercise experimental group (EGII, n=10), and stretching control group (CG, n=10). Open and closed kinetic exercises lasted 30 minutes three times a week for six weeks and stretching exercises performed four actions for 20 seconds and five sets. The measurement tools using surface electromyography to measure muscle activity in the ankle joint. The dynamic balance of the ankle was evaluated using the Y-Balance test. Results: Following the intervention, closed and open kinetic chain exercise group showed significant difference in tibialis anterior and gastrocnemius muscle activity and dynamic balance (P<.05). However, no significant difference in tibialis anterior and gastrocnemius muscle activity and dynamic balance between closed and open kinetic chain exercise group (P<.05). Conclusion: This study provides evidence that closed and open kinetic chain exercise can be presented as an effective exercise for the muscle activity of ankle muscle and dynamic balance of the subject with chronic ankle instability.

• Journal of Pharmaceutical Investigation
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• v.15 no.2
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• pp.63-72
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• 1985

Analgesic, anticonvulsive, sedative and antipyretic actions of Yangkyuksanwhatang which is composed of nine crude drugs including Rehmanniae Radix, and its effects on isolated ileum and blood vessel were investigated. The results of the studies were summerized as follows; 1. Analgesic and antipyretic effects were observed. 2. Suppressive actions were not shown on the convulsion induced by strychnine, but significant effects were noted on the convulsion induced by picrotoxin. 3. A prolongation of anesthetic time induced by pentobarbital sodium was significantly observed. 4. Relaxing actions were noted on the ileum of mice, and also, same effects were recognized on the contraction of the ileum due to acetylcholine chloride and barium chloride. 5. The expansion of blood vessels by relaxation of smooth muscle and hypotensive effects were noted.