Effects of mobile-based exercise intervention on health indices by the comparison of personal training time in male workers

Background: In the case of large companies, exercise programs for workers need to be operated effectively. However, programs could be limited to managing many employees using just a few exercise trainers, depending on circumstances, and exercise programs are likely to be more effective through the use of applications on mobile devices. In this research, we examine the effects of the degree of personal training (PT) time on health indices and stress by conducting an exercise program through the use of mobile devices used by male workers. Methods: We recruited 60 applicants who wanted to participate in the study of their own free will in H Company, Seoul, South Korea. The participants in the mobile-based exercise (MBE) programs were divided into three groups: mobile-based exercise with 30 minutes of personal training (PT) group (n=21), MBE with 5 minutes of PT group (n=20), and MBE self-exercise group (n=19). For data processing, SPSS was used to derive the mean (M) and standard deviation (SD) values of all measured items. The results were analyzed by repeated two-way ANOVA, paired t-test, one-way ANOVA and least significant difference (LSD). The significance level of all statistical values was set at .05. Results: In the MBE with 30 minutes PT group and MBE with 5 minutes PT group, body fat mass and percentage of body fat significantly decreased, and fat-free mass significantly increased. It was noted that all variables related to physical fitness (muscular endurance, muscular strength, flexibility, cardiopulmonary endurance, movement screen) improved significantly in all three groups. Incidentally, HR rest, SBP and MAP significantly decreased in the MBE with 30 minutes PT group and MBE with 5 minutes PT group. PP and RPP significantly decreased in all groups, while stress significantly decreased in the MBE with 5 minutes PT group. Conclusions: The use of mobile-based exercise training had positive effects on the health status of workers, and the positive effects were augmented as the degree of PT time by an exercise trainer increased. In addition, it is noteworthy that the MBE with 5 minutes PT group improved to the same extent as the MBE with 30 minutes PT group. The study indicates that it is possible to manage large numbers of employees’ exercise programs using mobile applications. Any follow-up study would need to develop ways to motivate and tailor content and verify exercise programs while using mobile devices of the workers for participation in continuous and voluntary exercise. [Ethiop. J. Health Dev. 2020;34(Special issue-3):10-17] Keywords: Exercise, personal training, mobile-based

Experience in Close Relationships Scale-Short Version (ECR-S) Validation With Korean College Students

The goal of this study was to validate the Experience in Close Relationships Scale-Short version (ECR-S) in Korean college students. One item of the attachment avoidance subscale was deleted following confirmatory factor analysis. The results suggest that the ECR-S demonstrated acceptable internal consistency and construct validity.N

Self-Focused Attention and Career Anxiety: The Mediating Role of Career Adaptability

The purpose of this study was to examine how 2 forms of self-focused attention, self-reflection and self-rumination, influence career anxiety. The authors hypothesized that the association between these 2 types of self-focused attention and career anxiety would be mediated by career adaptability on the basis of a career construction model of adaptation. The participants were 326 undergraduate students in South Korea. The results of this study supported the hypothesized mediation model by indicating significant indirect effects of self-reflection and self-rumination on career anxiety via career adaptability. The direct effect of self-rumination on career anxiety was significant (B = .44, p < .01), but the direct effect of self-reflection on career anxiety was not significant (B = -.05, p > .05). The authors discuss implications for counselors to help college students manage career anxiety by encouraging and supporting increased career adaptability. Future research to examine the cross-cultural validity of the current findings is needed.N

Using the Theory of Planned Behavior to Predict Korean College Students' Help-Seeking Intention

When dealing with the mental health concerns of college students, access to professional mental health services is necessary to enable early identification and prevention of severe mental health issues. Accordingly, this study used the theory of planned behavior (TPB) as a theoretical framework to determine the predictors of help-seeking intentions among college students in Korea. The authors developed a TPB questionnaire to measure attitudes, subjective norms, behavioral control, and intentions for seeking help and subsequently validated it via the confirmatory factor analysis (CFA). The authors considered mental health condition as a pre-existing factor that influences TPB variables. In addition, they deemed knowledge of professional mental health services as a factor influencing perceived behavioral control regarding help-seeking behavior among Korean college students. The research hypotheses were stated as follows: (H1) mental health conditions would influence TPB variables, which would in turn influence their intentions to seek help, and (H2) knowledge about professional mental health services would influence perceived behavioral control. With 300 undergraduate and graduate students, our results confirmed that mental health condition and knowledge about professional mental health services were associated with TPB variables, and all of the TPB variables we examined predicted intention to seek help.N

Combined Effects of Surface Morphology and Mechanical Straining Magnitudes on the Differentiation of Mesenchymal Stem Cells without Using Biochemical Reagents

Existing studies examining the control of mesenchymal stem cell (MSC) differentiation into desired cell types have used a variety of biochemical reagents such as growth factors despite possible side effects. Recently, the roles of biomimetic microphysical environments have drawn much attention in this field. We studied MSC differentiation and changes in gene expression in relation to osteoblast-like cell and smooth muscle-like cell type resulting from various microphysical environments, including differing magnitudes of tensile strain and substrate geometries for 8 days. In addition, we also investigated the residual effects of those selected microphysical environment factors on the differentiation by ceasing those factors for 3 days. The results of this study showed the effects of the strain magnitudes and surface geometries. However, the genes which are related to the same cell type showed different responses depending on the changes in strain magnitude and surface geometry. Also, different responses were observed three days after the straining was stopped. These data confirm that controlling microenvironments so that they mimic those in vivo contributes to the differentiation of MSCs into specific cell types. And duration of straining engagement was also found to play important roles along with surface geometry

Effects of Electroacupuncture on N-Methyl-D-aspartate Receptor-Related Signaling Pathway in the Spinal Cord of Normal Rats

This study examined the influence of the N-methyl-D-aspartate receptor (NMDAR) on the modulation of related spinal signaling after electroacupuncture (EA) treatment in normal rats. Bilateral 2 Hz EA stimulations (1-2-3.0 mA) were delivered at acupoints corresponding to Zusanli (ST36) and Sanyinjiao (SP6) in men for 30 min. Thermal sensitization was strongly inhibited by EA, but this analgesia was reduced by preintrathecal injection of the NMDAR antagonist, MK801. Phosphorylation of the NMDAR NR2B subunit, cAMP response element-binding protein (CREB), and especially phosphatidylinositol 3-kinase (PI3K) were significantly induced by EA. However, these marked phosphorylations were not observed in MK801-pretreated rats. EA analgesia was reduced by preintrathecal injection with the calcium chelators Quin2 and TMB8, similar to the results evident using MK801. Phosphorylation of PI3K and CREB induced by EA was also inhibited by TMB8. Calcium influx by NMDAR activation may play an important role in EA analgesia of normal rats through the modulation of the phosphorylation of spinal PI3K and CREB

Effect of software version and parameter settings on the marginal and internal adaptation of crowns fabricated with the CAD/CAM system

Objective This study investigated the marginal and internal adaptation of individual dental crowns fabricated using a CAD/CAM system (Sirona’s BlueCam), also evaluating the effect of the software version used, and the specific parameter settings in the adaptation of crowns.Material and Methods Forty digital impressions of a master model previously prepared were acquired using an intraoral scanner and divided into four groups based on the software version and on the spacer settings used. The versions 3.8 and 4.2 of the software were used, and the spacer parameter was set at either 40 μm or 80 μm. The marginal and internal fit of the crowns were measured using the replica technique, which uses a low viscosity silicone material that simulates the thickness of the cement layer. The data were analyzed using a Friedman two-way analysis of variance (ANOVA) and paired t-tests with significance level set at

A Case of Familial Cutaneous Collagenoma

Familial cutaneous collagenoma is a rare hereditary disease that is inherited in an autosomal dominant pattern. It is characterized by early onset of multiple, skin-colored, sometimes hypopigmented cutaneous nodules, which initially show a symmetrical arrangement on the trunk, and later on the neck and upper limbs. We report on a case of a 45-year-old female who presented with multiple oval to round hypopigmented papules measuring 5~15 mm on her trunk. Histopathologically, the lesions showed an increased amount of collagen fibers and decreased, fragmented elastic fibers in the dermis. The skin lesions were diagnosed as familial cutaneous collagenoma and no treatment was administered. To the best of our knowledge, our case is the first reported case of familial cutaneous collagenoma (FCC) in the Korean literature

Screening models using multiple markers for early detection of late-onset preeclampsia in low-risk pregnancy

BACKGROUND: Our primary objective was to establish a cutoff value for the soluble fms-like tyrosine kinase 1(sFlt-1)/placental growth factor (PlGF) ratio measured using the Elecsys assay to predict late-onset preeclampsia in low-risk pregnancies. Our secondary objective was to evaluate the ability of combination models using Elecsys data, second trimester uterine artery (UtA) Doppler ultrasonography measurements, and the serum fetoplacental protein levels used for Down’s syndrome screening, to predict preeclampsia. METHODS: This prospective cohort study included 262 pregnant women with a low risk of preeclampsia. Plasma levels of pregnancy-associated plasma protein-A (PAPP-A) and serum levels of alpha-fetoprotein, unconjugated estriol, human chorionic gonadotropin, and inhibin-A were measured, and sFlt-1/PlGF ratios were calculated. All women underwent UtA Doppler ultrasonography at 20 to 24 weeks of gestation. RESULTS: Eight of the 262 women (3.0%) developed late-onset preeclampsia. Receiver operating characteristic curve analysis showed that the third trimester sFlt-1/PlGF ratio yielded the best detection rate (DR) for preeclampsia at a fixed false-positive rate (FPR) of 10%, followed by the second trimester sFlt-1/PlGF ratio, sFlt-1 level, and PlGF level. Binary logistic regression analysis was used to determine the five best combination models for early detection of late-onset preeclampsia. The combination of the PAPP-A level and the second trimester sFlt-1/PlGF ratio yielded a DR of 87.5% at a fixed FPR of 5%, the combination of second and third trimester sFlt-1/PlGF ratios yielded a DR of 87.5% at a fixed FPR of 10%, the combination of body mass index and the second trimester sFlt-1 level yielded a DR of 87.5% at a fixed FPR of 10%, the combination of the PAPP-A and inhibin-A levels yielded a DR of 50% at a fixed FPR of 10%, and the combination of the PAPP-A level and the third trimester sFlt-1/PlGF ratio yielded a DR of 62.5% at a fixed FPR of 10%. CONCLUSIONS: The combination of the PAPP-A level and the second trimester sFlt-1/PlGF ratio, and the combination of the second trimester sFlt-1 level with body mass index, were better predictors of late-onset preeclampsia than any individual marker