Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

The COVID-19 disease is an emerging pandemic challenge, which has physical and psychological repercussions, deteriorating the quality of life in those who have been infected and, in turn, in those who have had to live in confinement. The objective of this study is to know the perceptions of Slackline athletes regarding the effects on training and quality of life derived from the COVID-19 situation. The research is based on a cross-sectional exploratory-descriptive quantitative method. The instrument used was a self-applied survey with three dimensions; 229 people from 28 countries correctly answered it, 176 men (15 - 57 years) and 51 women (20 - 43 years), belonging to Europe, America, Asia, and Oceania. The results show that 97.8% say they have lost motivation, 60.2% declare they have poor infrastructure conditions and / or little access to their training places, 65.5% have financial problems, and 88.2 % have presented health problems, highlighting that 10% of those surveyed have been diagnosed with positive COVID-19. It is concluded that the confinement and pandemic situation has created an unfavorable environment for Slackline athletes due to the complications to carry out their training sessions, lack of access to public spaces, demotivation, loss of physical capacity, and increase in injuries.

The COVID-19 pandemic resulted in a worldwide sports shutdown, leading to a reduced athletes’ workload, which is likely to increase the risk of injury after return to play when coupled with the expected increase in competitive density after the confinement period. In this regard, the knee is one of the joints with the highest injury prevalence among female soccer players, being the injury of the anterior cruciate ligament (ACL) one of the most frequent and severe. Thus, the present study aimed to develop an ACL injury prevention program that female soccer players could carry out during confinement periods. After reviewing the scientific literature, it was observed that strength training (with a main focus on the posterior chain), improved landing technique, lumbopelvic stability, and flexibility are associated with a lower risk of ACL injury in women. The program focuses on modifiable risk factors, so it should serve as a guide that can be adapted according to each context: individual characteristics, initial conditions, and evolution of the subject during development. Therefore, this study presents an intervention aiming at reducing the probability of ACL injury in female soccer players, after confinement periods, by directly influencing mechanisms of ACL injury previously reported for female soccer players.

The present cross-sectional (comparative) study aimed to compare the anthropometric and body composition parameters in professional soccer players over five seasons. It was conducted on 120 soccer players grouped in a cohort of 24 subjects per year. The age range was 18 to 37 years. The footballers were evaluated at the beginning of each season from 2012 to 2016; weight, height, six skin folds (triceps, subscapularis, supra-iliac, abdominal, thigh, and calf) were evaluated from 2012 to 2015. The Body Mass Index (BMI), fat percentage, fat mass, and FFM were calculated. The adipose tissue was grouped into three groups: arm (triceps + subscapular), trunk (supra iliac + abdominal), and legs (thigh + calf). Body weight, height, the sum of the 6 folds, and the MLG varied during the 5 years. For 2012 the results were the following: Weight, 76.6 ± 7.8kg; Height, 177.6 ± 5.7cm; Folds, 58.7 ± 12.8mm; MLG, 64.5 ± 6.3mm). In 2013, these were the results: Weight, 77.8 ± 6.4kg; Height, 178, 4 ± 4.4; Folds, 60.1 ± 15.9mm; MLG, 66.3 ± 3.5mm). These were the measures obtained in 2014: Weight, 74.9 ± 5.7kg; Height, 177.0 ± 5.8cm; Folds, 54.4 ± 14.7mm; MLG, 64.5 ± 4.5kg ). And these were of the year 2015: Weight, 74.1 ± 6.8kg; Height, 176.1 ± 5.5cm; Folds, 54.9 ± 15.6mm; MLG, 63.8 ± 4.6kg). Finally, in 2016 these were the measures collected: Weight, 72.7 ± kg; Height, 175.3 ± 6.9 kg; Folds, 50.8 ± 12.mm; MLG, 62.8 ± 5.9kg. This study verified that the soccer players' anthropometric profile and adipose tissue decreased each season, while the MLG reflected similar values in each of the evaluated cohorts.

The quantification of training load has become mandatory for coaches and team staff. Within the analyzed variables, distance covered at different speed zones is one of the most studied. However, there is no consensus in the definition of speed zones in the published articles about each team sport, so it makes difficult a comparison between them. Therefore, the purposes of this article were to establish a criteria standard in the classification of speed zones in team sports and to analyze its practical application in basketball. Five speed categories were established for basketball following the methodology described above: 0-10km/h, >10-13.8 km/h, >13.8-17.6 km/h, >17.6-21.5 km/h, and >21.5 km/h. The results showed differences between periods in high-speed displacements and sprints, maximum speed, total decelerations, and accelerations. In conclusion, the categorization of workload based on standard deviation according to maximum speed could be a viable option to individualize the analysis of distance covered per speeds in team sports such as basketball. Its use may lead to a better understanding and contextualization of the locomotion data in specific sports and teams.

Social networks are useful and effective as a tool for improving sporting events. Therefore, the aim of the present study was to analyze the statistical data of participation and impact of social media (Facebook, Twitter, and Instagram) of the Gymnastics of Extremadura, and to know the influence of Covid-19 pandemic on them. For this, the participation and interaction data on social networks were analyzed, between the periods 2016-2017, 2017-2018, 2018-2019, and 2019-2020. The same marketing strategy was always used in all online media. A descriptive and exploratory analysis of the data was performed. The results showed that the number of participants in the event has increased significantly since the use of social networks, with women being the main followers. Facebook is the social medium mainly used by users to get to know the Gymnastics of Extremadura. Therefore, the results demonstrate the importance of knowing the interactions of followers on social media to plan new online marketing strategies. Also, despite the event being suspended, as a consequence of the Covid-19 pandemic, the statistical data of the event's social networks are increasing every year. Being, the moment of publication of the poster or suspension of the event, the instants that receive the greatest number of actions in social networks such as Like or Share / Retweet the news.

Objetivo: Comparar la composición corporal por antropometría clásica e impedancia bioeléctrica en estudiantado universitario de una universidad peruana. Método:  Estudio correlacional, transversal, conformado por 152 estudiantes (77 varones y 75 mujeres) matriculados en el ciclo 2018-II con edad promedio de 20.45 ± 3.63 años. Se calculó para el método de antropometría el índice de masa corporal, mediciones antropométricas y se utilizó la ecuación de Yuhasz (1974) para determinar el porcentaje de grasa corporal, y para el de bioimpedancia eléctrica se utilizó el analizador tetrapolar multifrecuencia de medición segmental directa Inbody 120. Para establecer la correlación se utilizó el coeficiente de Pearson y para la concordancia se utilizó el método gráfico de Bland Altman e índice de estabilidad. Los datos fueron analizados con el programa estadístico IBM SPSS Statistics, versión 27.0. Para todos los análisis se utilizó un nivel de significancia (p<0.05). Resultados: Existe una fuerte correlación estadísticamente significativa (p<0.01y r=0.95) entre los métodos de antropometría y bioimpedancia eléctrica para la determinación del porcentaje de grasa corporal; además, una buena concordancia según el método gráfico de Bland Altman, reforzada con el índice de estabilidad para complemento de la interpretación (IE= 95 %). Conclusiones: Ambos métodos son intercambiables entre sí, por lo que pueden ser usados indistintamente en este tipo de población para determinar el porcentaje de grasa corporal expresado en porcentaje.

Background: Maximum oxygen consumption is an indicator of cardiorespiratory fitness. Aim: The purpose was, first, to relate and compare the V̇O2max as the dependent variable with the estimated distance in the six-minute walk test (SMWT) as the independent variable in university students and, secondly, to relate the distance (dependent) with demographic and anthropometric variables (independents). Methodology: A correlational, descriptive, and quantitative study with a non-experimental design was conducted on 110 university students. In the study, basic anthropometry and vital signs were measured. A direct method of V̇O2max (Bruce test) on a treadmill was applied. Then, the distance covered in the SMWT was evaluated with two equations available in the scientific literature. Differences between men and women were measured in the tests, the correlation between the distances estimated with V̇O2max and anthropometric variables, and repeated ANOVA measurement tests between V̇O2max and estimated distance were analyzed with the SPSS v.22 program (p<0.05). Results: Significant correlations were found between V̇O2max and estimated distances (p<0.05) in the total sample, men and women, and in some cases, the distance correlated with gender, age, weight, height, and BMI (p<0.05). However, there were differences between V̇O2max and distances estimated in the SMWT (p<0.001). Conclusions: The V̇O2max measurement method is different from the distance prediction equations, although they have a significant relationship.

Introduction: The circus attracts the attention of professionals from different areas; among them are Physical Education teachers working in Elementary Education. In fact, several studies reveal that teachers can be the "key" to opening the door to circus activities in school. Therefore, we believe that analyzing their experience is an interesting way to understand this approach. This study aimed to investigate the introduction of the teaching of circus activities in two Brazilian schools in Elementary Education. Methodological procedures: This article presents a field study conducted in two Brazilian schools, one in the city of Itatiba-SP and another in Belo Horizonte-MG. Through observations and interviews, we tried to understand the context and characteristics of each proposal. Results and discussion: We found that, in both cases, the figure of the teacher is mainly responsible for the inclusion of the circus in school and that the activities developed are justified by contributing to a more expressive and artistic education. Considerations: The cases studied show us two interesting proposals to organize classes that can inspire other teachers, managers, or researchers.

The results of sociological research in the oil and gas industry are presented in the article, revealing the recent social changes with a major impact on the Russian oil and gas market and the personnel management system. The article deals with demographic reasons and the role of the pandemic, which endangered post-millennials. The authors reevaluate the impact of digitalization on the Generation Z, which led to the reduction of working digital natives, since they will not live to work, but they will work to live. Gender, age, and professional characteristics of employees in oil and gas companies have been analyzed, as well as the current state and development trends of the labor market. The article emphasizes the priority of individual characteristics of "digital people", rather than staff numbers and pay level of the employees. This view resulted from the new reality of COVID-19 pandemic, geopolitical trends, sanctions policy, the global spread of digital technologies, mixing of socio-economic orientations and personal development. These people are unwilling to depend on anyone, but the ideal manager for them is the one who sets tasks most clearly and definitely.

In the conditions of the continuing crisis, determined both by external sanctions against Russia from several Western states, and the ongoing coronavirus pandemic, it is the industrial ecosystems of the country's regions that form innovative solvations with subjects of other industries and spheres of activity and are the main rational consumers of regional resources that combine the potential of innovative speed, high quality, adaptation to changing consumer demands, etc. This article examines the scientific and practical problem of the formation and functioning of innovation-oriented industrial solvates, the solution of which is in line with the new approach proposed by the authors to identify, determine the sources and rank the effects of innovative solvations in the regional industry. This approach is built on the concept of a circular economy, which is based on the assumption of the most rational organization and use of all types of resources of integrated industrial enterprises and related industries (spheres of activity), including through the use of end-to-end digital technologies. It has been proved that in various phases of the economic cycle, effective resource provision of solvation processes in the system of industrial innovations is of decisive importance, which means not only the rational distribution of limited resources between the participants of innovative solvations but also their lean and waste-free use in the production process.