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ABSTRACT Introduction: Brief introduction: Taekwondo is a sport that integrates explosive power and reaction speed. The reaction speed of the athletes has a direct bearing on the result of the competition. Objective: To improve the reaction time effect of athletes. Methods: Forty-one Taekwondo team athletes were selected as the research subjects. Then, the training methods were introduced, and special technology using an emg tester and a synchronous camera system was implemented to analyze the earliest emg signals and the moment of the hit, the time from signal emergence to the emg reaction for reaction time, and from signal emergence to hit for the total time. Results: The average score of the 41 athletes before the test was 0.282673,with standard deviation of 0.0377349 and standard error of 0.0058932. The average score, standard deviation, and standard error of the 41 athletes after small training were 0.28217, 0.037744 and 0.005895. Conclusions: From the test results of the three training modes, the small training mode had a significant impact on the reaction time of Taekwondo athletes, while the medium and large training modes did not have significant effects. The results show that a small amount of training is best and plays a significant role in improving the reaction of an athlete. Level of evidence II; Therapeutic studies - investigation of treatment results.

The purpose of the study was to analyze the cancer incidence in the males born from 1932 to 1949 and living in rural settlements of the municipal districts of the altai Krai affected by the traces from semipalatinsk first nuclear test on august 29, 1949. Material and methods. an epidemiological retrospective cohort study was based on the analysis of anonymized data on newly diagnosed and morphologically verified cases of cancer in a male cohort for the period from 2007 to 2016. the study included a cohort fixed by the date of the first nuclear test with a total of 6383 males. in total, 633 cases were identified in the cohort with newly diagnosed and morphologically verified cancer. at the beginning of the study, all males were alive and had no previous diagnosis of cancer. For a comparative analysis of the cancer incidence, the main (exposed) cohort comprised 2 291 men, and the control cohort included 4 092 men, who lived in rural settlements of municipal districts of the region and were not tracked during the first nuclear test conducted at the semipalatinsk test site. the person-time incidence rate (ptR), standard error (mptR) and confidence intervals (95 % ci) were calculated. the incidence and the relative risk of developing cancer were assessed. statistical analysis was carried out using microsoft office 2016. Results. the number of person-years in the main cohort was 1 6731 person-years, and in the control was 30 747. The incidence rate of person-time (ptR) in the main cohort was 2 032.22 × 105 person-years, with mptR equal to 110.21 and confidence intervals (95 % ci) – (1 811.80–2 252.64). in the control cohort, the corresponding values were: ptR – 952.94 × 105 person-years with mptR – 55,67 and 95 % ci (841.60–1 064.28). the most common cancer localizations in men of the main cohort were: digestive organs (c15-c26), respiratory and chest organs (c30-c39), skin (c43-c44), male genitals (c60-c63). in the control group, the most common localizations were respiratory and chest organs (c30-c39), digestive organs (c15-c26), male genital organs (c60-c63) and skin (c43-c44). Conclusion. an increased relative risk of developing malignant neoplasms in men born and living in the altai territory during the first nuclear test conducted at the semipalatinsk test site was revealed (RR=2.133; 95 % ci 1.824–2.493) with standard error of relative risk (s) equal to 0.0797. there were differences in cancer localization between the main and the control cohorts.

Objective: To determine whether the release of the first season of the Netflix series ‘13 Reasons Why’ was associated with changes in emergency department presentations for self-harm. Methods: Healthcare utilization databases were used to identify emergency department and outpatient presentations according to age and sex for residents of Ontario, Canada. Data from 2007 to 2018 were used in autoregressive integrated moving average models for time series forecasting with a pre-specified hypothesis that rates of emergency department presentations for self-harm would increase in the 3-month period following the release of 13 Reasons Why (1 April 2017 to 30 June 2017). Chi-square and t tests were used to identify demographic and health service use differences between those presenting to emergency department with self-harm during this epoch compared to a control period (1 April 2016 to 30 June 2016). Results: There was a significant estimated excess of 75 self-harm-related emergency department visits (+6.4%) in the 3 months after 13 Reasons Why above what was predicted by the autoregressive integrated moving average model (standard error = 32.4; p = 0.02); adolescents aged 10–19 years had 60 excess visits (standard error = 30.7; p = 0.048), whereas adults demonstrated no significant change. Sex-stratified analyses demonstrated that these findings were largely driven by significant increases in females. There were no differences in demographic or health service use characteristics between those who presented to emergency department with self-harm in April to June 2017 vs April to June 2016. Conclusions: This study demonstrated a significant increase in self-harm emergency department visits associated with the release of 13 Reasons Why. It adds to previously published mortality, survey and helpline data collectively demonstrating negative mental health outcomes associated with 13 Reasons Why.

“Crystal” guava (Psidium guajava L.) is a climacteric fruit that is generally harvested by farmers based on cultivation experience. In this study, portable 740-1070 nm of near-infrared spectrometer was employed to rapidly predict harvest indices of “crystal” guava, by means of non-contact and non-destructive approach. Samples of guava fruit were collected at days after anthesis (DAS) of 91, 94, 97, and 100. The total number of each sample were 30 fruits. The firmness, soluble solid content, acidity and sugar acid ration were evaluated as quality parameters. Partial least square (PLS) method was utilized for data processing. It was found that Standard Normal Variate (SNV) resulted the best pre-processing for all quality parameters. Performances of best models were demonstrated by coefficient of corraltion (R), standard error of calibration (SEC) and standard error of prediction (SEP), which were respectively 0.88, 6.21, 5.92 for firmness prediction, 0.74, 0.84, 0.79 for soluble solid content prediction, 0.59, 0.19, 0.26 for acidity prediction, and 0.71, 1.21, 1.58 for sugar acid ratio prediction model.

There few studies which tried to corelate biparietal diameter and gestational age in which an increase in biparietal diameter with the increase in gestational age was found but there was a discrepancy between 17 week of pregnancy and term and which is approximately 3 weeks. We conducted the present study to compare the gestational age and femur length and biparietal diameter in the population of Chhattisgarh state of India.A total of 380 pregnant females were enrolled for the study. They were between the 20 weeks to 38 weeks of gestation with their age ranging from 18-35 years.In the present study we observed a total of 158 cases in 2 trimester i.e. ranging from 20 to 27 weeks and 220 cases were in 3 trimester of pregnancy. Mean of BPD and FL observed was 73.1 and 56.2 respectively. The standard deviation and standard error of mean for biparietal diameter and femur length were 12.8, 11.6 and 0.63, 0.57 respectively.All parameters of present study are found to be highly correlated with gestational age. (r=, 0.987, 0.980 for, FL and BPD respectively).

Introduction: Vaccination is intended to prevent diseases. Vaccines saves 2-3 million lives every year. A COVID-19 vaccine is one of the best way to provide acquired immunity against COVID -19. The study aims to assess the effectiveness of planned teaching program in terms of knowledge and attitude [1]. Objective: To assess the impact of planned teaching program on COVID- 19 vaccination in terms of knowledge and attitude among the rural people. Method: A quantitative study with one group pre test post test design was conducted at various rural places of Nadiad Taluka. A total 60 people were enrolled in to the study. A structured knowledge questionnaire and likert attitude scale was built that contained information regarding COVID 19 vaccination. The effect of teaching program was analyzed by statically Results: T-test and chi square test was used to find the association with selected demographic variables. In the knowledge regarding COVID-19 vaccination range was 8, mean was 0.849 standard deviation was 0.357, standard error mean was 0.0595. In the attitude range was 33, mean was 4.345, standard deviation was 0.797, standard error mean was 0.132. A knowledge paired t-test value was 5.30 and the attitude paired t-test value was 6.57 was. Conclusion: The planned teaching program was effective in increasing knowledge and attitude regarding COVID-19 vaccination among the rural people of Nadiad Taluka.

Background: The Sigmund Freud's psychosexual theory says that the school age is the important stage in the development of self-confidence. Many studies reveals that physical exercise has a positive effect in the cognitive intellectual areas of the children. Regular practice of simple exercise will makes the children more sharp minded and helps to give a better learning outcome Material & Methods: The main aim of the study was to evaluate the efficacy of super brain yoga by measuring the changes in concentration and memory in children.. A quantitative evaluative approach was used for this study with a one group pretest and posttest design. The purposive sampling technique was used to select 120 students aged between 10 to 12 years who were studying in 6th and 7th standard. The practice of super brain yoga was given 20 times over 10 minutes per day for a period of one month. The Digit Cancellation Test and the Knox Cube Test was used to was used to assess the pretest and posttest level of concentration and memory in children. Results: The pretest mean and standard deviation of concentration was 33.64±5.43 with a standard error of 0.496. The first posttest (at the end of second week of practice of super brain yoga) mean and standard deviation was 33.55± 5.378 with a standard error of 0.491 and the t-value was 0.749. The second posttest (at the end of fourth week of practice of super brain yoga) mean and standard deviation was 33.67±5.393 with a standard error of 0.492 and the t-value was 0.240. The pretest mean and standard deviation of memory was 33.67±4.696with a standard error of 0.429.The first posttest (at the end of second week of practice of super brain yoga) mean and standard deviation was 33.66±4.654with a standard error of 0.425 and the t-value was 0.080. The second posttest (at the end of fourth week of practice of super brain yoga) mean and standard deviation was 33.68±4.700with a standard error of 0.420and the t-value was 0.074. The present study result shows that statistically there was no significant effect of super brain yoga on concentration and memory of children and no association between posttest level of concentration and memory of children with their selected demographic variables. Conclusion: Hence the study concludes that the super brain yoga has no significant effect on concentration and memory of children with a duration of four weeks of practice.The study recommended that to bring the desired positive effect on children’s concentration and memory the study can be conducted for a long period of time.

AbstractFor a sample of Exponentially distributed durations we aim at point estimation and a confidence interval for its parameter. A duration is only observed if it has ended within a certain time interval, determined by a Uniform distribution. Hence, the data is a truncated empirical process that we can approximate by a Poisson process when only a small portion of the sample is observed, as is the case for our applications. We derive the likelihood from standard arguments for point processes, acknowledging the size of the latent sample as the second parameter, and derive the maximum likelihood estimator for both. Consistency and asymptotic normality of the estimator for the Exponential parameter are derived from standard results on M-estimation. We compare the design with a simple random sample assumption for the observed durations. Theoretically, the derivative of the log-likelihood is less steep in the truncation-design for small parameter values, indicating a larger computational effort for root finding and a larger standard error. In applications from the social and economic sciences and in simulations, we indeed, find a moderately increased standard error when acknowledging truncation.