El objetivo del estudio pretende dar a conocer la asociación que existe entre el desarrollo de las habilidades motrices (HM) durante la adolescencia y la adherencia y mantención a la actividad física (AF). Metodología: Se realizó una búsqueda con el método PRISMA a partir de cinco bases de datos; Medline, Scielo, Scopus, Web of Science y Lilacs. Se consideran estudios sin restricción de diseño, desde el año 2015 al 2020, disponibles en idioma portugués, inglés, español y alemán, donde de su población de estudio incluyera adolescentes de 13 a 21 años. Se excluyeron artículos con menos de un año de intervención, fuera de los rangos etarios y que presentaran patologías. Además, no se incluyeron estudios que iniciaron su intervención en la niñez y finalizaron iniciando la adolescencia. Resultados: Se identificaron 17 estudios que abordan el enfoque de la HM para la consecución de hábitos saludables asociados a la AF y reducción del sedentarismo, los cuales demuestran que el mayor desempeño motor de los adolescentes apunta a una mayor participación en AF o deportes, pero, además, hay otros factores que parecen predecir la AF hacia futuro. Ya sea aptitud física, autoconcepto físico, la competencia motriz percibido, el consumo de medios, el peso corporal y el IMC. Conclusión: La diversificación del movimiento en las clases de educación física, influyen directamente en el mayor desarrollo de las competencias motrices en la adolescencia y la adquisición de habitos en la mantención de AF. The aim of the study is to show the association that exists between the development of motor skills (HM) during adolescence and adherence and maintenance to physical activity (PA). Methodology: A search was carried out with the PRISMA method from five databases; Medline, Scielo, Scopus, Web of Science, and Lilacs. Studies without design restriction are considered, from 2015 to 2020, available in Portuguese, English, Spanish and German, where their study population will include adolescents from 13 to 21 years of age. Articles with less than one year of intervention, out the age ranges and presenting pathologies were excluded. Furthermore, studies that began their intervention in childhood and ended in adolescence were not included. Results: 17 studies were identified that address the (HM) approach to achieve healthy habits associated with PA and reduction of sedentary lifestyle, which show that the higher motor performance of adolescents points to greater participation in PA or sports, but Furthermore, there are other factors that seem to predict PA in the future. Be it physical fitness, physical self-concept, perceived motor competence, media consumption, body weight and BMI. Conclusion: The diversification of movement in physical education classes directly influence the greater development of motor skills in adolescence and the acquisition of habits in the maintenance of PA.

Basic motor skills are recognized as fundamental movements that allow children to interact with their environment and are identified as the basic structure on which more complex movements are built. Objective: to identify the level of motor development of children from 3 to 10 years of age according to sex and age group. Methodology. We studied a sample with a total of 328 participants (girls = 170; boys = 158) at preschool (n = 154) and school levels (n = 174). The ages of the students ranged from 3 to 10 years, with a mean of 5.94 years (±2.53). TGMD2 was applied to identify motor development. Results: boys and girls present low levels of physical activity, with most of them in the very poor, poor, and low-average categories (n = 182, 55.5%). Levels of motor development in locomotion, manipulation, and general development by age show significant differences (p = 0.000). However, levels of development by sex are not significant in manipulation, locomotion, and gross motor skills tests, respectively (p = 0.150, p = 0.208, and p = 0.210), and in relation to chronological age and motor development age show significant differences (p = 0.000).

All the variables that arise in family dynamics can have significant effects on the lives of children concerning their nutritional status and motor development. The objective of this study was to relate the PAL of parents to the level of motor development and the BMI of their children. A total of 198 subjects participated, with the age of the students ranging between 8 and 10 years. To measure the BMI, the norms for the nutritional evaluation of children and teenagers from 5 to 19 years were used; to identify the motor behaviors, the TGMD-2 Test was used; and to identify the level of physical activity of parents, the International Physical Activity Questionnaire (IPAQ) was used. For the analysis, the independent samples t-test and the non-parametric Mann–Whitney U test (Wilcoxon) were used, and for the correlational analysis, Spearman’s rho test was applied. This study found no significant correlation between the activity level of parents and nutritional status variables (p = 0.162), or between the PAL variables of parents and the motor development of their children (p = 0.738). A parent’s level of physical activity does not have a direct relationship with the nutritional status or the motor development of their children.

Modified invasion games promote the development of real and perceived motor competence. Children with higher motor competence are more likely to participate in physical activity practice and to remain in it, both in adolescence and adulthood. (1) Background: The purpose of this study is to determine the effect of modified invasion games on the real motor competence and self-assessment of the physical condition fifth-grade students from a private school in Viña del Mar, Chile. (2) Methods: 40 girls and boys with an average age of 11.47 years (SD = 0.554) participated in this study during a 12-week intervention. The MOBAK 5-6 battery was used to assess actual motor competence, the SEMOK questionnaire was used to determine perceived motor competence, the International Fitness Scale (IFIS) self-assessment questionnaire was used to assess perceived physical fitness, and the weight/size ratio was used to determine BMI. A Friedman’s nonparametric ANOVA analysis was applied to determine the effect of the intervention, in addition to an analysis of covariance (ANCOVA) to identify the influence of the covariates on motor competence. (3) Results: No statistically significant differences were established between weight, BMI, and waist circumference. There was a statistically significant difference after the intervention in the actual motor competence of object control (p = 0.005) and perceived motor competence of object control (p ≤ 0.001) (4) Conclusions: An intervention based on modified invasion games is effective for the improvement of actual and perceived motor competence of object control. It was not possible to identify a positive effect on the self-assessment of muscle strength after the intervention.

El comportamiento sedentario conlleva al aumento de la fatiga muscular, esto debido a que existe menor producción de óxido nítrico, menor flujo sanguíneo, predisponiendo a la generación de lesiones músculos esqueléticas. En Chile la población sedentaria mayor de 18 años alcanza el 86,7% según la última Encuesta Nacional De Salud 2016-2017. Objetivo: demostrar el efecto de los programas de intervención realizados para prevenir lesiones músculo esqueléticasen personas sedentarias que inician una actividad deportiva. Método: se efectuó una revisión de la literatura científica en bases de datosy en función de criterios de elegibilidad se seleccionaron nueve artículos. Resultados: se escogieron el 18% de los artículos seleccionados obteniendo nueve artículos de un total de 49 artículos atingentes encontrados en la búsqueda.Conclusiones: se destacan como efectivos aquellos programas con una frecuencia de tres a cinco días; con un volumen de intensidad semanal bajo o medio, según la frecuencia escogida; en los cuales el plan de entrenamiento considera ejercicios de movilidad articular, ejercicios excéntricos y entrenamiento propioceptivo; no se define una duración determinada para la sesión de entrenamiento,para conseguir cambios significativos. Sedentary behaviors lead to increased muscle fatigue, this due to lower nitric oxide production, lower blood flow, predisposing to the generation of skeletal muscle injuries. In Chile, sedentary population over the age of 18 years reaches 86.7% according to the latest National Health Survey 2016-2017.Objective: to demonstrate the effect of intervention programs performed to prevent skeletal muscle injuries. Method: A review of the scientific literature was carried out in databases and nine articles were selected based on eligibility criteria. Results: 18% of the articles were chosen from a total of 49 in the list of items found in the search. Conclusions: programs with a frequency of three to five days are highlighted as effective; with low or medium weekly intensity volume, it depends on the chosen frequency; the training plans include joint mobility exercises, eccentric exercises, and proprioceptive training; there is no fixed duration for the training session to achieve significant changes.

El presente estudio transversal pretende determinar y establecer la asociación entre las variables de estado nutricional y fuerza en el segmento inferior entre estudiantes Chilenos correspondientes a la región de la Araucanía, pertenecientes a un sector urbano en contraste con estudiantes de un sector rural. La muestra fue de 120 escolares, divididos en 60 niños y 60 niñas cuyas edades fluctuaron entre los 10 y 11 años . Se realizó medición del IMC (Kg/H^2) para luego clasificar su estado nutricional y también la prueba de salto vertical Test de Sargent (fuerza de tren inferior) en la población escolar. Los grupos fueron comparados con la prueba estadística Chi-cuadrado con intervalos de confianza del 95 %. Para los resultados del test de Sargent se realizó correlación de Pearson. Se encontró una alta prevalencia de niñas de ambos sectores, encasilladas en el rango de sobrepeso y obesidad. Así mismo, presentan similitud en la prueba de salto vertical (test de Sargent) en donde no existieron diferencias significativas al momento de correlacionar entre sexo y área geográfica. Abstact. The present cross-sectional study aims to determine an establish the association between the variables of nutritional status and lower segment in Chilean students from Araucanía Region an urban sector in contrast to students from a rural sector. The sample was 120 schoolchildren, divided into 60 boys and 60 girls whose ages fluctuated between 10 and 11 years of age. BMI (Kg / H ^ 2) was measured to later classify their nutritional status and also the Sargent vertical jump test (lower body strength) in the school population. The groups were compared with the statistical T-student test for independent samples with 95% confidence intervals. Pearson's correlation was performed for the results of the Sargent test. A high prevalence of girls from both sectors was found, classified as overweight and in the obesity range. Likewise, there are more overweight children in the urban sector than in the rural sector. Presenting similarity in the vertical jump test (Sargent test) where there were no significant differences when correlating between sex and geographic area.