Background: Maximizing peak bone mass is advocated as a way to prevent osteoporosis. As a prerequisite to the elaboration of any preventive program aimed at rnaximizing peak bone mass, it is important to determine how the rate of skeletal growth at elinically relevant sites, such as lumbar spine(LS), femoral neck(FN), proceeds in relation to age and pubertal stages in both sexes. The present study was performed to measure bone mineral density(BMD) of Korean children and adolescents and to assess the influence of age, sex, puberty and body size on bone mineral density (BMD) during the period of bone growth. Method: Lumbar spine(LS), femoral neck(FN) BMD were measured in 199 healthy males and fernales 7~23 years of age using dual energy x-ray absorptiometry(DEXA), Tanner staging(TS) was used to assess stage of puberty. Results: Anthropometric measurements generally increased with tanner stage in both sexes. Sex differences were observed. In males, compared to females there were significantly higher in height(TS1, TS3, TS4, TS5), weight(TS1, TS3, TS5), dorsal hand skinfold thickness(TS1, TS5), and lean body mass(TS1, TS3, TS4, TS5): while in females, compared to males there were significantly higher in BMI(TS4), skinfold thickness except dorsal hand and fat %(TS3-TS5), and total fat mass(TS3, TS4)(p Adolescent ; Body Size ; Body Weight ; Bone Density ; Bone Development ; Child ; Female ; Hand ; Hip ; Humans ; Male ; Methods ; Miners ; Osteoporosis ; Puberty ; Sex Characteristics ; Skinfold Thickness

The lactic dehydrogenase activities of Ascaris lumbricoides have been assayed according to the developmental course of the fertilized eggs compared with the unfertilized eggs. Experimental procedures were modified that of Wroblewski and La Due's method with use of diphosphopyridine nucleotide reduced form(DPNH). Sodium pyruvate and lactic dehydrogenase, the specific activities were expressed as DPNH unit per mg protein by method of Kornberg's. The experimental results are as follaws: Lactic dehydrogenase activity in fertilized eggs of Ascaris are significantly increased from morula stage and its optimal pH is in 3.4 degrees. While any activities were not observed in unicell stage of fertilized eggs and unfertilized eggs. Water soluble protein of fertilized eggs of Ascaris were varied in their amount during their developmental process. The amont of protein in tadpole stage eggs have increased to 1.3 times more than that of cleavage stage eggs. However the amounts of water soluble protein in unfertilized eggs are revealed to one-third less than that of fertlized eggs. The specific activity of lactic dehydrogenase in tadpole stage eggs are decreased to one third less than those of morula stage eggs during development, the stage is considered to be as a growth criteria in developmental process, as on this point the activity of aerobic cytochrome c oxidase and cyclophorase begin to increase respectively.
parasitology-helminth-nematoda ; lactic dehydrogenase ; cytochrome c oxidaes ; cyclophorase ; Ascaris lumbricoides ; biochemistry

This study was made to investigate the influence of mouth breathing to tongue, mandible and hyoid bone position. It has been clinically suggested that the mouth breathing is induced by the respiratory dysfunction of nasopharyngeal airway causing by the Adenoids. The author used the 50 children, who were the nasal breathes with normal occlusion as the control group, and 50 children, who were mouth breathers with Adenoid as the experimental group. Results were as following: 1. In experimental group, the tongue was positioned more anterior and lower than that of the normal children. 2. In experimental group, the mandible was positioned more lower than that of the normal children. 3. In experimental group, the hyoid bone was positioned more anterior and lower than that of the normal children.
Adenoids* ; Child ; Humans ; Hyoid Bone* ; Mandible* ; Mouth Breathing* ; Mouth* ; Tongue*

No abstract available.
Adipose Tissue* ; Bone Density* ; Female ; Humans

No abstract available.
Animals ; Mice* ; Valproic Acid*

This study tried to find the prevalence and distribution of temporo-mandibulr disorders(TMD) for workers (employee) in Seoul area to investigate the correlation between TMD and possible etiological factors such as general muscle and joint symptoms, headache, unilateral chewing and parafunction. This study was an epidemiological investigation of answers obtained from 282 persons by questionaire from Aug. 1995 to Nov. 1995. The major findings from the questionaire were as follows. (1) 43.26% of the subjects(282 persons) has TMD. (41.88% of man and 43.26% of women) (2) The more often people have general muscle and joint symptoms and -headache, the more susceptible they are to TMD. Their correlation was very significant(p<0.001). (3) The more people have bad oral habits such as bruxism, clenching and biting habit, the more likely they have TMD. The more sensitive people are to stress, the more frequently they have bad oral habits such as bruxism, clenching and biting habit. (4) Unilateral chewing has higher TMD index than bilateral chewing. There is no relationship between ache areas and TMD index.
Bruxism ; Epidemiology* ; Headache ; Humans ; Joints ; Mastication ; Prevalence ; Seoul* ; Temporomandibular Joint Disorders

No abstract available.
Evidence-Based Medicine* ; Korea*

No abstract available.
Coronary Artery Disease* ; Coronary Vessels* ; Education* ; Health Behavior*

Pneumocephalus is a rare complication of anesthetic procedures involving the epidural space. With the loss of resistance technique using air, air may be injected in through the dural puncture site. Epidural blood patch was performed for the treatment of post-lumbar puncture headache, and 10 minutes after the treatment, 8 ml of 0.5% bupivacaine hydrochloride was injected through epidural catheter. Loss of consciousness and apnea were developed about 8 minutes after injection of local anesthetics. Computerized tomographic brain scan revealed the presence of air within intracranial cavity. Pneumocephalus may be symptomatic or asymptomatic. It generally responds well to conservative management. The patient did not complain of a headache. The patient was discharged from the hospital on the seventh day postpartum with no neurologic sequelae.
Anesthetics, Local ; Apnea ; Blood Patch, Epidural ; Brain ; Bupivacaine ; Catheters ; Epidural Space ; Headache ; Humans ; Pneumocephalus* ; Post-Dural Puncture Headache ; Postpartum Period ; Punctures* ; Unconsciousness

The followings are the results of the study on industrial accidents occurred at 12 factories manufacturing metal products during the period of 2 years from January 1980 to December 1981 in the area of Yong-Dung-Po in Seoul. The results of the study are as follows: 1. The incidence rate of industrial injuries was 45.7 per 1, 000 workers, of the sample group and the rate of male (54.0) was three times higher than that of female ('17.5). 2. In age groups, the highest rate was observed in the group of under 19 years old with 83.5, awhile the lowest in the group of 40s. 3. It was found that those who had short term of work experience produced a higher rate of injuries, particularly, the group of workers with less than 1 year of experience showed the highest rate of it as 48.1%. 4. In working time, the highest incidence rate occurred 3 and 7 hours after the beginning of their working showing the rate of 6. 0 and 6. 1 per 1, 000 workers, respectively. 5. The highest incidence rate was observed on Monday as 8.4 per 1, 000 workers, and it was 18.3% in aspect of the days of a week. 6. in aspect of the months of a year, the highest incidence was observed on July as 5.4 per 1, 000 workers and the next was on March as 4. 8. These figures account for 11.8% and 10.5 of total occurrence in respective month. 7. In causes of injuries, the accident caused by power driver: machinery showed the highest rate with 37.5%, the second was due to handling without machinery with 17.2%, and the third was due to falling objects with 14.2%, and striking against objects with 10.2%, and so on. 8. By parts of the body affected, the mist injuries 84.3% of them occurred on both upper and lower extremities with the rate of 58.8% for the former and 25.5% for the latter. Fingers were most frequently injured with a rate of 40.3%. Comparing the sites of extremities affected, rate of injuries on the right side was 55.0% and 45.0% on the left sloe. 9. In the nature of injury, laceration and open wound were the highest w th 34.0%, the next was fracture and dislocation with 31.90, and sprain was the third with 8, 10. On the duration of treatment, it lasted less than one month in 68. 9~, of the injured cases, of which 14.5% of~the cases were recovered within 2 weeks, and 54.4% of them were treated more than 2 weeks. And the duration of the treatment tended to be prolot~ ged in larger industries. 11. The ratio of insured accidents to uninsured accidents was 1 to 4.7.
Accidents, Occupational ; Dislocations ; Epidemiologic Studies* ; Extremities ; Female ; Fingers ; Humans ; Incidence ; Lacerations ; Lower Extremity ; Male ; Medically Uninsured ; Seoul* ; Sprains and Strains ; Strikes, Employee ; Wounds and Injuries ; Young Adult