Purpose: This study aimed to assess the association between physical activity and pregnancy in 6 months among infertile women who underwent in vitro fertilization (IVF). Methods: The participants included in this study were infertile women who underwent IVF at Cha Fertility Center in Seoul Station from October 2019 to February 2020. Of 132 women who agreed to participate in the study, one was eliminated for omitting the exercise questionnaire. A survey assessing the level of physical activity of infertile women was conducted using the Korean version of the International Physical Activity Questionnaires. We calculated metabolic equivalent task-minutes (MET-min) scores and obtained their IVF results after 6 months of the survey. Participants with less than 3,000 MET-min were classified into the minimally active group, and those with ≥3,000 MET-min were classified as the healthenhancing group. The 2 groups were compared based on age, anti-Müllerian hormone levels, body mass index, infertility duration, nulliparity, harmful alcohol drinking, history of smoking, obesity, male factors, and pregnancy rates. Adjusted relative risk for pregnancy was calculated using log-binomial regression analysis. Results: There was no significant difference in basal characteristics between the less active and health-enhancing groups. When controlling for all covariates, the relative risk for pregnancy was close to null with health-enhancing activity. The adjusted pregnancy rate decreased with increasing MET-min in the generalized additive model. Conclusion We observed no positive association between physical activity and pregnancy rate among interfile women undergoing IVF. To confirm our findings, subsequent interventional studies would be needed.

This study was to find out whether the rendering screen difference affect to measuring distance in a CAD program according to three types of CAD programs. Materials and methods: The model presented in ISO 12836 for dental scanner evaluation was reduced by 70%. This model was repeatedly scanned 15times using Trios II (3Shape, Denmark). Using the output STL file, 3Shape CAD, inLab 15, and ExoCAD programs were used to measure the horizontal distance (H) and vertical distance (V) between adjacent point angle, and for each experiment, three groups were set according to the CAD program type. Statistical analysis was performed using One-way ANOVA test and post hoc was performed using Dunnett T3 test. Results: In the horizontal and vertical distance measurement, there was no difference in the average of the measured values between the three groups according to the CAD program (P>.05). Conclusion: There were no effect of the difference in the rendering screen in the horizontal and vertical linear distance measurements of the inlay model on the dental CAD program.

Purpose: This study aimed to assess the association between physical activity and pregnancy in 6 months among infertile women who underwent in vitro fertilization (IVF). Methods: The participants included in this study were infertile women who underwent IVF at Cha Fertility Center in Seoul Station from October 2019 to February 2020. Of 132 women who agreed to participate in the study, one was eliminated for omitting the exercise questionnaire. A survey assessing the level of physical activity of infertile women was conducted using the Korean version of the International Physical Activity Questionnaires. We calculated metabolic equivalent task-minutes (MET-min) scores and obtained their IVF results after 6 months of the survey. Participants with less than 3,000 MET-min were classified into the minimally active group, and those with ≥3,000 MET-min were classified as the healthenhancing group. The 2 groups were compared based on age, anti-Müllerian hormone levels, body mass index, infertility duration, nulliparity, harmful alcohol drinking, history of smoking, obesity, male factors, and pregnancy rates. Adjusted relative risk for pregnancy was calculated using log-binomial regression analysis. Results: There was no significant difference in basal characteristics between the less active and health-enhancing groups. When controlling for all covariates, the relative risk for pregnancy was close to null with health-enhancing activity. The adjusted pregnancy rate decreased with increasing MET-min in the generalized additive model. Conclusion We observed no positive association between physical activity and pregnancy rate among interfile women undergoing IVF. To confirm our findings, subsequent interventional studies would be needed.

PURPOSE: Assessment of the diameters of the aortic arches in the human fetus may be helpful in the prenatal diagnosis of aortic arch anomalies. The purpose of this study is to construct valuable reference ranges of fetal aortic arch for various fetal growth parameters in an unselected Korean population. METHODS: A prospective, cross-sectional study was performed in 98 normal singleton fetuses between 20 and 38 weeks of gestation. The transverse aortic arch diameter (TAD) and distal aorta isthmus diameter (AID) were measured in the longitudinal view during systole. The bi-parietal diameter (BPD), head circumference (HC), abdominal circumference (AC) and femur length (FL) were obtained at the same time. Ultrasound examinations were performed with a 2.0-6.0 MHz convex probe by abdominal ultrasound. RESULTS: TAD and AID as a function of gestational age (GA) was expressed by the regression equation TAD= -1.246+0.168 X GA, and AID = -1.341+0.180 X GA; TAD and AID are expressed in millimeters and GA in weeks. TAD and AID as a function of BPD was expressed by the regression equation TAD= -1.147+0.664 X BPD, and AID = -1.152+0.696 X BPD. TAD and AID as a function of HC was expressed by the regression equation TAD = -1.187+0.182 X HC, and AID = -1.350+0.198 X HC. TAD and AID as a function of AC was expressed by the regression equation TAD = -0.528+0.173 X AC, and AID = -0.533+0.183 X AC. TAD and AID as a function of FL was expressed by the regression equation TAD = -0.519+0.799 X FL, and AID = -0.601+0.860 X FL; BPD, HC, AC and FL are expressed in centimeters. Correlations were found to be highly statistically significant in relation to GA, BPD, HC, AC, and FL respectively (P<0.0001 in all). Normal mean of TAD and AID per GA, BPD, HC, AC and FL and 95% prediction limits were also defined, respectively. CONCLUSION: New reference ranges of fetal aortic arch related to other fetal bio-parameters representing fetal growth were obtained successfully. The normative date will be helpful in the prenatal accurate diagnosis of aortic anomalies and abnormal growth of fetal aortic arches in Korea.
Aorta ; Aorta, Thoracic ; Cross-Sectional Studies ; Echocardiography ; Femur ; Fetal Development ; Fetus ; Gestational Age ; Head ; Humans ; Korea ; Pregnancy ; Prenatal Diagnosis ; Prospective Studies ; Reference Values ; Systole

No abstract available.
Blood Glucose* ; Hemoglobin A, Glycosylated*

OBJECTIVE: The present study was conducted to evaluate the viability of germ cells form the adult and fetal ovarian tissues after vitrification followed by xenografting. METHOD: The human adult ovarian tissues were obtained from 33 years old patients, and the fetal ovarian tissues were obtained from 22 weeks and 25 weeks in gestation. ovarian tissues were cryopreserved by vitrification with 5.5 M ethylene glycol (EG 5.5) and 1.0 M sucrose as cryoprotectants. Adult and fetal ovarian tissues were pre-equilivrated with EG 5.5 at room temperature for 10 and 5 minutes, respectively and plunged into liquid nitrogen immediately. Frozen-thawed tissues were xenografted into NOD-SCID mice to evaluated the viability and capacity for further growth of the primordial follicles. Grafts were recovered from the recipients 4 weeks after transplantation and histological analysis was accomplished. RESULT AND CONCLUSION: Grafts recovered 4 weeks after transplantation contained less number of oocytes and primordial follicles compared to that of the fresh tissues. Survived follicles were mainly primordial and intermediary with larger diameter and more granulosa cells. It is confirmed that 1) the ovarian tissues were healthy and the germ cells were survived after vitrification, and 2) the survived fetal primordial follicles after vitrification resumed the growth in the xenofrafts.
Adult ; Animals* ; Ethylene Glycol ; Female ; Germ Cells ; Granulosa Cells ; Heterografts* ; Humans* ; Mice ; Nitrogen ; Oocytes ; Pregnancy ; Sucrose ; Transplantation, Heterologous* ; Transplants ; Vitrification

No abstract available.
Diagnosis* ; Hematologic Tests*

The aims of this study were to determine the short-term effectiveness of an internet-based lifestyle modification (LSM) program in preventing the onset of type 2 diabetes mellitus (T2DM) in prediabetes patients in community settings. A total of 415 subjects who were diagnosed with prediabetes were randomly assigned to the LSM and standard management (SM) groups. After the 6-month intervention, the LSM group had a statistically significant reduction in body weight, body mass index compared to the SM group participants. In the LSM group, blood glucose levels were significantly decreased after intervention and the clinical improvement effect was evident in the group that achieved the target weight loss of 5% or more of the initial weight for 6 months. Internet-based 6-month-intensive LSM programs conducted by public health center personnel are an effective way to provide lifestyle intervention programs and encourage maintenance of healthy behaviors in subjects with a high risk of T2DM in community settings.