Development of physical fitness through simulation exercises for ski racers aged 13-14. Non-randomized quasi-experimental study / Desarrollo de la condición física mediante ejercicios de simulación para corredores de esquí de 13-14 años. Estudio cuasi-experimental no aleatorizado

Abstract Introduction: In recent decades, the level of skiing performance in Russia has decreased significantly. This has necessitated problems with the preparation of athletes for competitions and the training process. Objective: To analyze the effects of simulation training tools on the physical condition of ski racers aged 13-14 years. Methods: Quasi-experimental, non-randomized study. 40 cross-country skiers aged 13-14 years belonging to the Korshik Village sports school (Russia) were assigned to a control (n = 20) and experimental (n = 20) group. Classes in the control group were conducted according to the usual training plan and in the experimental group simulation exercises were used. The control tests included pull-ups, squats, two-legged long jump, simulated 100-meter climbing and a 500-meter running test. Results: The control group showed no significant improvements (p > 0.05), while the experimental group reported significant improvements in pull-ups (22.2%; p< 0.05), squat (5.9%; p< 0.05), two-legged long jump (6.8%; p< 0.05), 100-meter climbing simulation (7.8%; p< 0.05) and 500-meter run (4.2 %, p <0.05). Conclusion: If, in the preparatory period, a series of simulation exercises are included in the training program for skiers aged 13-14 years, the level of physical fitness of athletes will improve significantly.

Resumen Introducción: En las últimas décadas, el nivel de rendimiento del esquí en Rusia ha disminuido significativamente. Esto plantea nuevos desafíos en la preparación de los atletas para las competiciones y el proceso de entrenamiento. Objetivo: Analizar los efectos de las herramientas de entrenamiento por simulación sobre la condición física de corredores de esquí de entre 13 y 14 años. Métodos: Estudio cuasiexperimental, no aleatorizado. 40 esquiadores de fondo de entre 13 y 14 años pertenecientes a la escuela deportiva Korshik Village (Rusia) fueron asignados a un grupo control (n=20) y experimental (n=20). Las clases en el grupo de control se llevaron a cabo según el plan de entrenamiento habitual y en el grupo experimental se utilizaron ejercicios de simulación. Las pruebas de control incluyen dominadas, sentadillas, salto de longitud con dos piernas, escalada simulada de 100 metros y una prueba de carrera de 500 metros. Resultados: El grupo control no presentó mejoras significativas (p>0,05), mientras que el grupo experimental reportó mejoras significativas en dominadas (22,2%; p<0,05), sentadilla (5,9%; p<0,05), salto de longitud a dos piernas (6,8%; p<0,05), simulación de escalada de 100 metros (7,8%; p<0,05) y carrera de 500 metros (4,2%; p<0,05). Conclusión: Si en el periodo preparatorio se incluye una serie de ejercicios de simulación en el programa de entrenamiento para esquiadores de 13-14 años, el nivel de condición física de los deportistas mejorará significativamente.

Selección del diseño apropiado en investigación biomédica: fundamentos y consideraciones para la práctica basada en evidencia. Parte I

En la investigación clínica es crucial realizar una selección adecuada del diseño de investigación. Cada tipo de diseño cumple con diferentes objetivos, desde examinar prevalencias mediante diseños transversales hasta analizar exposiciones a lo largo del tiempo en estudios de cohorte. Los diseños de investigación pueden ser clasificados en primarios, como los ensayos clínicos aleatorizados, o secundarios, como las revisiones. También se dividen en experimentales, que evalúan intervenciones, y observacionales que simplemente observan sin intervenir. Al elegir el diseño más apropiado, se deben tener en cuenta la pregunta de investigación, los recursos disponibles y las consideraciones éticas. Una elección acertada garantiza la validez y aplicabilidad de los resultados, lo cual resulta beneficioso tanto para la medicina como para los pacientes.

In clinical research, it is crucial to make an appropriate selection of the research design. Each type of design meets different objectives, from examining prevalences through cross-sectional designs to analyzing exposures over time in cohort studies. Research designs can be classified as primary, such as randomized clinical trials, or secondary, such as reviews. They are also divided into experimental, which evaluate interventions, and observational, which simply observe without intervening. When choosing the most appropriate design, the research question, available resources, and ethical considerations should be taken into account. A correct choice guarantees the validity and applicability of the results, which is beneficial for both medicine and patients.

The influence of physical education at school on the attention of students aged 15-16 years / El impacto de la educación física en la escuela en la atención de los estudiantes de 15 a 16 años / O impacto da educação física na escola na atenção de estudantes de 15 a 16 anos

ABSTRACT Objectives: the influence of physical activity in physical education lessons on the attention indicators of schoolchildren. Material and Methods: 141 students, aged 15-16, who studied in the 9th grade, took part in the experiment. The main research method was the "Trondyke Test", which determines the level of attention development of students. The test was used before and after the physical education lesson 1 time per month for 5 months. Results: students who did not engage in physical education in the lesson were not able to significantly improve their performance in the test, which indicates a possible adaptation to the test after its first performance before the lesson. Students who were engaged in physical exercises could significantly increase the test results. Conclusion: the results obtained determine the effectiveness of the influence of a physical education lesson at school on the indicators of students attention. This study will serve as an additional motivation for students to engage in physical culture, since the impact of physical exercises has a positive effect not only on the development of physical qualities, but also on the attention of schoolchildren. Level of Evidence III; Retrospective Comparative Study.

RESUMEN Objetivos: la influencia de la actividad física en las clases de educación física en los indicadores de atención de los escolares. Material y métodos: Participaron en el experimento 141 escolares, de 15-16 años, que cursaban el noveno grado. El principal método de investigación fue la "Prueba de Trondyke", que determina el nivel de desarrollo de la atención de los escolares. La prueba se usó antes y después de la lección de educación física una vez al mes durante 5 meses. Resultados: los jóvenes que no participaron en educación física en la lección no pudieron mejorar significativamente su rendimiento en la prueba, lo que indica una posible adaptación a la prueba después de su primera actuación antes de la lección. Los escolares que realizaban ejercicios físicos pudieron aumentar significativamente los resultados de la prueba. Conclusión: los resultados obtenidos determinan la efectividad de la influencia de una lección de educación física en la escuela sobre los indicadores de atención de los escolares. Este estudio servirá como una motivación adicional para que los estudiantes participen en la cultura física, ya que el impacto de los ejercicios físicos tiene un efecto positivo no solo en el desarrollo de las cualidades físicas, sino también en la atención de los escolares. Nivel de Evidencia III; Estudio Comparativo Retrospectivo.

RESUMO Objetivos: a influência da atividade física nas aulas de Educação Física nos indicadores de atenção dos escolares. Material e métodos: participaram do experimento 141 escolares, de 15 a 16 anos, que estudaram na 9a série. O principal método de pesquisa foi o "teste de Trondyke", que determina o nível de desenvolvimento da atenção dos escolares. O teste foi utilizado antes e depois da aula de Educação Física uma vez por mês durante 5 meses. Resultados: Os estudantes que não praticaram Educação Física na aula não conseguiram melhorar significativamente seu desempenho no teste, o que indica uma possível adaptação ao teste após sua primeira apresentação antes da aula. Os estudantes que estavam envolvidas em exercícios físicos foram capazes de aumentar significativamente os resultados do teste. Conclusão: os resultados obtidos determinam a eficácia da influência de uma aula de Educação Física na escola nos indicadores de atenção das crianças. Este estudo servirá como uma motivação adicional para os estudantes se envolverem na cultura física, uma vez que o impacto dos exercícios físicos tem um efeito positivo não apenas no desenvolvimento das qualidades físicas, mas também na atenção dos alunos. Nível de Evidência III; Estudo Comparativo Retrospectivo.

Assessment of activities and participation of people by rehabilitation-focused clinical registries: a systematic scoping review.

INTRODUCTION: Rehabilitation is considered a key intervention in health care. Clinical registries, defined as an organized system that uses observational methods to collect information to assess specific outcomes in a defined population, can contribute to assessing the impact of the rehabilitation intervention. This review aims to identify and describe rehabilitation-specific registry systems with an emphasis on identifying outcomes that enable the assessment of vital areas and activities of daily living. EVIDENCE ACQUISITION: A systematic scoping review was conducted. A systematic search was conducted up to August 2022 in MEDLINE/PubMed, Embase, Cochrane Library, Epistemonikos, and other search resources. Studies related to rehabilitation registries presented data on people with health problems that could limit their functioning were selected. The inclusion of studies/clinical registries was not limited by methodological design, year of publication, country, or language. The unit of analysis was rehabilitation registries. The measurement instruments used to assess the outcomes were explored to estimate the domain assessed from the vital areas related to functioning and disability as described by the International Classification of Functioning, Disability and Health (ICF). The vital areas were classified according to activities of daily living (ADLs). EVIDENCE SYNTHESIS: Seventy-one registries in rehabilitation were identified. The registries included a median of 3 (IQR 2-5) assessment instruments designed to assess the impact of different rehabilitation programs. In total, 137 different assessment scales or instruments were identified. Each rehabilitation registry assessed 6 (IQR 2-8) domains of the ICF, and 15.4% of registries assessed all domains. The most assessed domain was "Mobility" (89.7%), and the least assessed was "General Tasks and Demands" (25.6%). In addition, 92.3% of rehabilitation registries assessed basic ADLs, 76.9% advanced ADLs, and 71.8% instrumental ADLs. CONCLUSIONS: Although clinical registries do not claim to directly assess the impact of rehabilitation programs on people's functioning according to the ICF framework, it was identified that a low percentage of them assessed the nine vital areas through different outcome assessment instruments. However, most rehabilitation registries directly or indirectly assess some basic, instrumental, and advanced ADLs. The findings of this review highlight the need to improve the design of clinical registries focused on assessing the impact of rehabilitation programs to assess people in all areas of their lives.

Effectiveness of physical exercise programmes in reducing complications associated with secondary lymphoedema to breast cancer: a protocol for an overview of systematic reviews.

INTRODUCTION: Breast cancer-related lymphoedema (BCRL) is one of the most underestimated and debilitating complications associated with the treatment that women with breast cancer receive. Several systematic reviews (SRs) of different physical exercise programmes have been published, presenting disperse and contradictory clinical results. Therefore, there is a need for access to the best available and summarised evidence to capture and evaluate all the physical exercise programmes that focus on reducing BCRL. OBJECTIVE: To evaluate the effectiveness of different physical exercise programmes in reducing the volume of lymphoedema, pain intensity and improving quality of life. METHOD AND ANALYSIS: The protocol of this overview is reported following the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols, and its methodology is based on Cochrane Handbook for Systematic Reviews of Interventions. Only those SRs involving physical exercise by patients with BCRL will be included, whether on its own or combined with other exercises or other physical therapy interventions.The outcomes of interest to be considered will be lymphoedema volume, quality of life, pain intensity, grip strength, range of motion, upper limb function and any adverse event. The MEDLINE/PubMed, Lilacs, Cochrane Library, PEDro and Embase databases will be searched for reports published from database inception to April 2023.Two researchers will perform study selection, data extraction and risk of bias assessment independently. Any discrepancy will be resolved by consensus, or ultimately, by a third-party reviewer. We will use Grading of Recommendations Assessment, Development and Evaluation System to assess the overall quality of the body of evidence. ETHICS AND DISSEMINATION: The results of this overview will be published in peer-reviewed scholarly journals and the scientific dissemination will take place in national or international conferences. This study does not require approval from an ethics committee, as it does not directly collect information from patients. PROSPERO REGISTRATION NUMBER: CRD42022334433.

Strategies used to manage overlap of primary study data by exercise-related overviews: protocol for a systematic methodological review.

INTRODUCTION: One of the most conflicting methodological issues when conducting an overview is the overlap of primary studies across systematic reviews (SRs). Overlap in the pooled effect estimates across SRs may lead to overly precise effect estimates in the overview. SRs that focus on exercise-related interventions are often included in overviews aimed at grouping and determining the effectiveness of various interventions for managing specific health conditions. The aim of this systematic methodological review is to describe the strategies used by authors of overviews focusing on exercise-related interventions to manage the overlap of primary studies. METHODS AND ANALYSIS: A comprehensive search strategy has been developed for different databases and their platforms. The databases to be consulted will be MEDLINE (Ovid), Embase (Ovid), The Cochrane Database of Systematic Reviews (Cochrane Library) and Epistemonikos. Two reviewers will independently screen the records identified through the search strategy and extract the information from the included overviews. The frequency and the type of overlap management strategies of the primary studies included in the SRs will be considered as the main outcome. In addition, the recognition of the lack of use of any overlap management strategy and the congruence between planning and conducting the overview focusing on overlap management strategies will be assessed. A subgroup analysis will be carried out according to the journal impact factor, year of publication and compliance with the Preferred Reporting Items for Overviews of Reviews statement. ETHICS AND DISSEMINATION: This study will not involve human subjects and therefore does not require ethics committee approval. However, the conduct and reporting of the findings of this review will be conducted in a rigorous, systematic and transparent manner, which relates to research ethics.The findings of this review will be presented at scientific conferences and published as one or more studies in peer-review scientific journals related to rehabilitation or research methods.

Escalas de percepción subjetiva del esfuerzo y actividad física en tiempos de SARS-CoV-2/COVID-19 / Scales of subjective perception of effort and physical activity in times of SARS-CoV2/COVID 19

Sr. Editor; recientemente leímos con interés el artículo publicado en la Revista Universidad y Salud en su volumen 22, número 2, denominado "Recomendaciones prácticas para evitar el desacondicionamiento físico durante el confinamiento por pandemia asociada a COVID-19."(1). Felicitamos a los autores por el gran valor y alta pertinencia del artículo en general, cuyos resultados contribuyen a elevar el nivel de conocimiento respecto a recomendaciones prácticas para evitar el sedentarismo asociado a las medidas de confinamiento por SARS-CoV-2/COVID-19. Sin embargo, con el fin de aportar mayor e importante información nos gustaría exponer algunas reflexiones centradas en las recomendaciones de actividad física (AF).

Which physical therapy intervention is most effective in reducing secondary lymphoedema associated with breast cancer? Protocol for a systematic review and network meta-analysis.

INTRODUCTION: Lymphoedema associated with breast cancer is caused by an interruption of the lymphatic system, together with factors such as total mastectomy, axillary dissection, positive lymph nodes, radiotherapy, use of taxanes and obesity. Physiotherapy treatment consists of complex decongestive therapy, manual lymphatic drainage and exercises, among other interventions. Currently, there are several systematic review and randomised controlled trials that evaluate the efficacy of these interventions. However, at present, there are no studies that compare the effectiveness of all these physical therapy interventions. The purpose of this study is to determine which physical therapy treatment is most effective in reducing breast cancer-related lymphoedema, improving quality of life and reducing pain. METHODS AND ANALYSIS: MEDLINE, PEDro, CINAHL, EMBASE, LILACS and Cochrane Central Register of Controlled Trials will be searched for reports of randomised controlled trials published from database inception to June 2022. We will only include studies that are written in English, Spanish and Portuguese. We will also search grey literature, preprint servers and clinical trial registries. The primary outcomes are reduction of secondary lymphoedema associated with breast cancer, improvements in quality of life and pain reduction. The risk of bias of individual studies will be evaluated using the Cochrane Risk of Bias 2.0 Tool. A network meta-analysis will be performed using a random-effects model. First, pairs will be directly meta-analysed and indirect comparisons will be made between the different physical therapy treatments. The GRADE system will be used to assess the overall quality of the body of evidence associated with the main results. ETHICS AND DISSEMINATION: This protocol does not require approval from an ethics committee. The results will be disseminated via peer-reviewed publications. PROSPERO REGISTRATION NUMBER: CDR42022323541.

Patrones de conducta alimentaria y estado nutricional en estudiantes universitarios tras dos años de educación en línea

RESUMEN Fundamento: la población estudiantil universitaria es particularmente vulnerable de adquirir conductas alimentarias poco saludables, producto de factores como la inadecuada nutrición y el elevado sedentarismo generado por la elevada carga académica y el poco tiempo libre, cuyo resultado conlleva a potenciales riesgos para la salud. Objetivo: describir y comparar el patrón de conducta alimentaria y estado nutricional en estudiantes de sexto año de la carrera de Odontología impartida por la Universidad Andrés Bello en la sede Concepción luego de dos años de educación en línea por la COVID-19. Métodos: se realizó un estudio descriptivo de corte transversal. La muestra se conformó por 18 estudiantes universitarios con un promedio de edad de 24,94 ± 1,95 años clasificados como eutróficos (21,92 ± 1,27 km/m2) y con sobrepeso (28,13 ± 1,53 km/m2), presentando ambos grupos hábitos alimentarios suficientes (12,27 ± 1,43 puntos). Se aplicó la Encuesta de Conductas y Hábitos Alimentarios en Educación Superior y se realizó una comparación entre grupos según estado nutricional determinado por el índice de masa corporal. El análisis descriptivo utilizó las medidas de tendencia central y dispersión, media, desviación estándar, mínimo y máximo. La distribución y homocedasticidad de los datos se determinó a partir de la prueba de Shapiro-Wilk y Levene, la comparación entre grupos se realizó con la prueba t de Student para muestras independientes considerando un nivel de significancia alfa <0,05 para todos los análisis. Resultados: solo se observaron diferencias medias significativas entre grupos para la preocupación alimentaria (p= 0,009). Conclusión: la preocupación alimentaria sugiere un interés por el autocuidado. Se requieren otros estudios que expliquen todas las variables moduladoras de la conducta alimentaria con el objetivo de promover espacios universitarios que conlleven la concientización de estilos de vida saludables luego de dos años de educación superior en línea producto de la pandemia de la COVID-19.

ABSTRACT Background: the university student population is particularly vulnerable to acquiring unhealthy eating behaviors, as a result of factors such as inadequate nutrition and the high sedentary lifestyle generated by the high academic load and little free time, the result of which leads to potential health risks. Objective: to describe and compare the pattern of eating behavior and nutritional status in sixth-year students of the dentistry degree taught by the Andrés Bello University at the Concepción campus after two years of online education due to COVID-19. Methods: a descriptive cross-sectional study was carried out. The sample consisted of 18 university students with an average age of 24.94 ± 1.95 years classified as eutrophic (21.92 ± 1.27 km/m2) and overweight (28.13 ± 1.53 km/m2). m2) both groups presenting sufficient eating habits (12.27 ± 1.43 points). The Survey of Behaviors and Eating Habits in Higher Education was applied and a comparison was made between groups according to nutritional status determined by the body mass index. The descriptive analysis used the measures of central tendency and dispersion, mean, standard deviation, minimum and maximum. The distribution and homoscedasticity of the data was determined using the Shapiro-Wilk and Levene test. The comparison between groups was carried out with the Student's t-test for independent samples, considering an alpha level of significance <0.05 for all analyses. . Results: significant mean differences between groups were only observed for food concerns (p= 0.009). Conclusion: food concern suggests an interest in self-care. Other studies are required that explain all the modulating variables of eating behavior with the aim of promoting university spaces that lead to awareness of healthy lifestyles after two years of online higher education as a result of the COVID-19 pandemic.