Retos最新文献

{"title":"Efecto del modelo organizativo de la asignatura “Actividades en el Medio Natural” sobre la motivación en estudiantes universitarios (Effect of organisational model of subject \"Activities in Natural Environment\" on university students' motivation)","authors":"Virginia Gómez-Barrios, Lázaro Mediavilla-Saldaña, Vicente Gómez-Encinas, Juan José Salinero-Martín","doi":"10.47197/retos.v58.106569","DOIUrl":"https://doi.org/10.47197/retos.v58.106569","url":null,"abstract":"El objetivo de este estudio fue analizar la motivación de los estudiantes en la asignatura de Actividades en el Medio Natural en función del modelo organizativo empleado (fraccionado, intensivo-continuado, clásico y clásico invertido). Se administró la versión española de la Escala de Locus Percibido de Causalidad en Educación Física adaptada a esta asignatura a 125 estudiantes distribuidos en cuatro grupos. Tras la intervención se encontró una interacción significativa entre el modelo organizativo y el cambio de pre a post intervención en las subescalas de motivación intrínseca (p <.001; η2p=.178) y de regulación identificada (p=.001; η2p=.129), siendo el intensivo-continuado el modelo que obtiene mejores resultados. Pese a que los grupos eran iguales antes de la intervención, se encontraron diferencias entre grupos tras la intervención en motivación intrínseca (p=.001; η2 parcial=.127), y en regulación identificada (p=.035; η2 parcial=.068). En la evaluación post intervención el grupo clásico obtuvo diferencias significativas con respecto al fraccionado (p=.041) y al intensivo-continuado (p=.001) con menores valores en motivación intrínseca. Este grupo también obtuvo un menor promedio con respecto al grupo intensivo-continuado en la subescala de regulación identificada (p=.043). Como conclusión principal destaca que las clases en contacto continuado con el medio natural contribuyen a la mejora de la motivación, reduciendo la desmotivación de los estudiantes en la asignatura impartida.\u0000Palabras clave: Actividades en el medio natural, educación, motivación, autodeterminación, modelo intensivo-continuado\u0000Abstract. The aim of this study was to analyse the motivation of students in the subject of Activities in the Natural Environment according to the organisational model used (fractionated, intensive-continuous, classic and inverted classic). The Spanish version of the Perceived Locus of Causality Scale in Physical Education adapted to this subject was administered to 125 students distributed in four groups. After the intervention, a significant interaction was found between the organisational model and the change from pre- to post-intervention in the subscales of intrinsic motivation (p <.001; η2p=.178) and identified regulation (p=.001; η2p=.129), with the intensive-continued model obtaining better results. Although the groups were the same before the intervention, differences were found between groups after the intervention in intrinsic motivation (p=.001; partial η2=.127), and in identified regulation (p=.035; partial η2=.068). In the post-intervention evaluation, the classical group obtained significant differences with respect to the fractionated (p=.041) and intensive-continued (p=.001) groups, with lower values in intrinsic motivation. This group also obtained a lower average with respect to the intensive-continuous group in the identified regulation subscale (p=.043). The main conclusion is that classes in continuous contact with the natura","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141829219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estrategias de dosificación del hiit y su influencia en el vo2max en pacientes con insuficiencia cardíaca: una revisión sistemática (Dosage strategies of hiit and their influence on vo2max in patients with heart failure: A systematic review)","authors":"Mauro Tauda, Eduardo Joel Cruzat Bravo, Felipe Ignacio Suárez Rojas","doi":"10.47197/retos.v58.106943","DOIUrl":"https://doi.org/10.47197/retos.v58.106943","url":null,"abstract":"Introducción: El entrenamiento interválico de alta intensidad (HIIT) es una estrategia efectiva en la rehabilitación cardíaca, mejorando significativamente la capacidad aeróbica. Sin embargo, la falta de claridad sobre la dosificación óptima limita su aplicación clínica. Objetivos: Evaluar y determinar la dosificación óptima del entrenamiento interválico de alta intensidad (HIIT) para mejorar el Vo2max en pacientes con insuficiencia cardíaca. Métodos: Se llevó a cabo una búsqueda en 5 bases de datos (PubMed, Scopus, Web of Science, Cochrane Library y Embase). Se incluyeron los estudios que usaban el protocolo HIIT y midieron el Vo2max. Y que comparaban HIIT con entrenamiento de intensidad moderada (MICT), intervalos cortos de intensidad máxima (SID) o algún programa de fuerza en pacientes con IC. Resultados: Se analizaron 7 estudios que incluyeron un total de 625 participantes con fracción de eyección ventricular izquierda (FEVI) entre 35% y 50%. os hallazgos indican que el HIIT se muestra más efectivo para mejorar el VO2max que otros métodos. HIIT ofrece flexibilidad en intensidad, frecuencia, duración e intervalos de trabajo. Se recomienda un mínimo de 3 sesiones semanales durante al menos 6 semanas, con intensidad superior al 85%, recuperación activa al 40-50% del VO2max, intervalos de trabajo de 30 segundos seguidos de recuperación, 4-7 series por sesión y un tiempo total de 25 minutos mínimo por sesión. Estas pautas pueden optimizar las adaptaciones fisiológicas del entrenamiento en pacientes con insuficiencia cardíaca. Conclusión: Los hallazgos de la revisión sistemática respaldan la eficacia del HIIT como una opción de entrenamiento físico para pacientes con IC.\u0000Palabras claves: Entrenamiento, enfermedades cardiovasculares, falla cardiaca.\u0000Abstract. Introduction: High intensity interval training (HIIT) is an effective strategy in cardiac rehabilitation, significantly improving aerobic capacity. However, lack of clarity regarding optimal dosing limits its clinical application. Objectives: To evaluate and determine the optimal dosage of high-intensity interval training (HIIT) to improve VO2max in patients with heart failure. Methods: A search was carried out in 5 databases (PubMed, Scopus, Web of Science, Cochrane Library and Embase). Studies that used the HIIT protocol and measured Vo2max were included. And they compared HIIT with MICT, SID or some strength program in patients with HF. Results: 7 studies were analyzed that included a total of 625 participants with left ventricular ejection fraction (LVEF) between 35% and 50%. The findings indicate that HIIT is more effective in improving VO2max than other methods. HIIT offers flexibility in intensity, frequency, duration and work intervals. A minimum of 3 weekly sessions is recommended for at least 6 weeks, with intensity greater than 85%, active recovery at 40-50% of VO2max, work intervals of 30 seconds followed by recovery, 4-7 series per session and a time total of 25 minutes minimum per","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141828415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The attacking style of teams is determinant of high-intensity actions of soccer referees","authors":"Paulo Sandi, A. Teixeira, Gabriel S G Maia, Pedro V S Passos, Paulo V Souza, Carlo Castagna, Paulo H Borges, Juliano F Silva","doi":"10.47197/retos.v58.106789","DOIUrl":"https://doi.org/10.47197/retos.v58.106789","url":null,"abstract":"This study aimed to examine the impact of the attacking style of teams and match outcome on the high-intensity activities (HIA) performed by Brazilian field referees (FRs) and assistant referees (ARs). The sample was composed of 20 FRs (age: 34.4 ± 5.9 years) and 36 ARs (age: 35.4 ± 6.3 years). Match activities derived from Global Position System (GPS) were collected from FRs and ARs during 41 official soccer matches over two seasons. A total of 3898 (FRs: 2118; ARs: 1780) actions were analyzed by video-motion to determine attacking style: counterattack (CA), fast attack (FA) and positional attack (PA). Match outcome was assessed as final match outcome (home win, draw and away win) and goal difference (GD) (0, 1 and ≥ 2). Significance level was set ρ < 0,05. Higher proportion of HIA was observed during CA (FRs: 60.7%; ARs: 50.6%) when compared to FA and PA. CA elicited longer HIA in terms of distance and duration than the other attacking styles analyzed. FRs covered significantly (p = 0.01) longer total distance (TD) when the away team won the match than in other conditions. In addition, GD 1 and GD 0 resulted in longer TD (p=0.01) and distance at sprinting (SPR) (p=0.04), respectively. These results provide valuable insights to the influence of different match factors on the performance of referees during soccer matches.\u0000Keywords: match status, final match outcome, attacking type, situational variable.","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141829048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"El efecto del entrenamiento concurrente en la glucosa, perfil lipídico, las enzimas hepáticas y la peroxidación lipídica en hombres jóvenes (The effect of concurrent training on glucose, lipid profile, liver enzymes, and lipid peroxidation in young men)","authors":"P. J. Flores-Moreno, Jose E. Del Rio Valdivia, Fabian Rojas Larios, C. I. Gamboa Gómez, Gerardo Martínez Aguilar, José Moncada Jiménez","doi":"10.47197/retos.v58.106483","DOIUrl":"https://doi.org/10.47197/retos.v58.106483","url":null,"abstract":"El objetivo de este estudio fue determinar el efecto del entrenamiento concurrente (EC) en glucosa, función hepática, perfil lipídico y estrés oxidativo en hombres jóvenes. Dieciséis hombres jóvenes moderadamente activos (Edad= 23.11 ± 4.20 años, Altura= 172.44 ± 6.50 cm, Peso= 73.52 ± 15.70 kg, IMC= 24.84 ± 5.85 kg/m2) entrenaron durante doce semanas en bloques separados de adaptación, desarrollo y mantenimiento, durante cuatro semanas cada uno. Se recolectaron muestras de sangre al inicio y después del EC para determinar MDA, glucosa, TG, LDL-c, HDL-c, ALT y AST. Se compararon las puntuaciones mediante pruebas t de medidas repetidas.\u0000Nuestros resultados mostraron que no se observaron cambios significativos en el peso corporal (M= -0.14, p= 0.748, IC del 95%=-0.79, 0.99), IMC (M= 0.04, p= 0.803, IC del 95%=-0.27, 0.32), glucosa (M= 0.88, p= 0.679, IC del 95%=-2.87, 4.63), colesterol (M= -0.19, p= 0.957, IC del 95%=-7.00, 7.00), triglicéridos (M= -9.00, p= 0.325, IC del 95%=-25.19, 7.73), HDL-c (M= -0.60, p= 0.811, IC del 95%=-6.52, 3.42), LDL-c (M= 2.20, p= 0.494, IC del 95%=-4.20, 8.77), AST (M= -0.13, p= 0.954, IC del 95%=-3.94, 3.00), ALT (M= 0.25, p= 0.923, IC del 95%=-3.19, 4.44), VLDL (M= -1.80, p= 0.325, IC del 95%=-5.04, 1.55) y MDA (M= 0.06, p= 0.621, IC del 95%=-0.16, 0.29). El 40% de los participantes respondieron positivamente al programa de EC.\u0000Nuestros hallazgos revelaron que un programa de EC de cuatro semanas no afectó los marcadores de estrés oxidativo en adultos jóvenes. Además, los no respondedores a la intervención deben ser seguidos cuidadosamente para determinar su umbral personal de mejora.\u0000Palabras clave: Entrenamiento concurrente, estrés oxidativo, glucosa, enzimas hepáticas.\u0000Abstract. The objective of this study was to determine the effect of concurrent training (CT) on glucose, liver function, lipid profile, and oxidative stress in young men. Sixteen moderately active young men (Age= 23.11 ± 4.20 yr., Height= 172.44 ± 6.50 cm, Weight= 73.52 ± 15.70 kg, BMI= 24.84 ± 5.85 kg/m2) trained for twelve weeks in separate in blocks of adaptation, development, and maintenance for four weeks each. Blood samples were collected at baseline and after CT to determine MDA glucose, TG, LDL-c, HDL-c, ALT, and AST. Repeated measures t-tests compared scores. Our results showed that no significant changes were observed in body weight (M= -0.14, p= 0.748, 95%CI= -0.79, 0.99), BMI (M= 0.04, p= 0.803, 95%CI= -0.27, 0.32), glucose (M= 0.88, p= 0.679, 95%CI= -2.87, 4.63), cholesterol (M= -0.19, p= 0.957, 95%CI= -7.00, 7.00), triglycerides (M= -9.00, p= 0.325, 95%CI= -25.19, 7.73), HDL-c (M= -0.60, p= 0.811, 95%CI= -6.52, 3.42), LDL-c (M= 2.20, p= 0.494, 95%CI= -4.20, 8.77), AST (M= -0.13, p= 0.954, 95%CI= -3.94, 3.00), ALT (M= 0.25, p= 0.923, 95%CI= -3.19, 4.44), VLDL (M= -1.80, p= 0.325, 95%CI= -5.04, 1.55), and MDA (M= 0.06, p= 0.621, 95%CI= -0.16, 0.29). The 40% of the participants responded positively to the CT program. Our findings reveale","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141829810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extracción fraccional de O2 y condición física entre niños activos e inactivos físicamente durante la recuperación post ejercicio (Fractional O2 extraction and fitness among physically active and inactive children during post-exercise recovery)","authors":"R. Y. Yañez Sepulveda, Cristóbal Cortés-Morales, Benjamín Galindo-Guerrero, Tomás Olivares-Sepúlveda, Diego Zurita-Urmazábal, Ildefonso Alvear-Órdenes, Guillermo Cortés-Roco, V. Clemente-Suárez, Claudio Hinojosa-Torres, Juan Pablo Zavala-Crichton, Jorge Olivares-Arancibia, M. Tuesta","doi":"10.47197/retos.v58.105984","DOIUrl":"https://doi.org/10.47197/retos.v58.105984","url":null,"abstract":"El objetivo de este estudio fue determinar las diferencias en la capacidad de extracción de O2 muscular y la condición física entre escolares físicamente activos y sedentarios. Participaron 19 estudiantes de 10 a 14 años, categorizados como físicamente activos o inactivos. Además, se llevó a cabo una batería de evaluaciones de la condición física básica y de variables cardiovasculares. Los niños físicamente activos demostraron una eficiencia significativamente mayor en la extracción y resaturación de O2 muscular durante la recuperación post-ejercicio en comparación con sus homólogos sedentarios (17,8 ± 8,11s vs 26,1 ± 8,54 s; p = 0,004; η²p: 0,271). En la prueba de aptitud física sólo hubo diferencias significativas en la prueba de sentarse y pararse de la silla durante 30s (27,8 ± 3,97 vs. 19,4 ± 2,88 repeticiones. p=< 0,001 η²p: 0,614). Estos hallazgos subrayan el potencial de la actividad física regular para optimizar la respuesta vascular periférica y la utilización del oxígeno muscular durante la recuperación post-ejercicio en niños.\u0000Palabras clave: NIRS; Condición física; Recuperación del ejercicio; Oxigenación muscular; Actividad física.\u0000Abstract. This study aimed to determine the differences in muscle O2 extraction capacity and physical fitness between physically active and sedentary schoolchildren. 19 students aged 10 to 14 years participated, categorized as physically active or inactive. In addition, a battery of basic physical condition and cardiovascular variables assessments was carried out. Physically active children demonstrated significantly greater efficiency in muscle O2 extraction and resaturation during post-exercise recovery compared to sedentary counterparts (17.8 ± 8.11s vs 26.1 ± 8.54 s; p = 0.004; η²p: 0.271). In the physical fitness tests there were only significant differences in the 30s Chair Stand Test (27.8 ± 3.97 vs. 19.4 ± 2.88 reps. P=< 0.001 η²p: 0.614). These findings underscore the potential of regular physical activity to optimize peripheral vascular response and muscle oxygen utilization during post-exercise recovery in children.\u0000Keywords: NIRS; Physical Fitness; Exercise Recovery; Muscle Oxygenation; Physical Activity","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 35","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Instrument for Assessing Physical Literacy Skills Competence in Primary School Tasikmalaya, Indonesia","authors":"Rahmat Permana, F. N. Isti’adah, Rikha Surtika Dewi, Milah Nurkamilah, Sulidar Fitri, Dedi Nofrizal, P. Purba, Adi S, Didi Yudha Pranata, Liliana Puspa Sari","doi":"10.47197/retos.v58.107671","DOIUrl":"https://doi.org/10.47197/retos.v58.107671","url":null,"abstract":"This study aimed to design, develop, and assess the validity of a Physical Literacy (PL) instrument designed for primary school students in Tasikmalaya, Indonesia. Children aged 8 and 12 were the sample for this development research design. The instrument's validity was evaluated using alpha coefficient analysis, and the results were quite good. All items had alpha coefficients close to or equal to 1.00, indicating the proposed evaluation instrument has good validity. As it allows them to classify students according to their ability levels and conduct more effective physical education evaluations, physical education teachers and classroom teachers require PL assessment. Physical education curriculum planning concentrates more on Physical Literacy; each student needs to be improved to be more straightforward with this tool. Therefore, this evaluation tool is beneficial for teachers in obtaining a track record of individual and collective student progress in Physical Education learning. The results from this study show that the instrument created is reliable and successfully collected PL data in Tasikmalaya City, located in Indonesia. Since we can ensure that coaching efforts can concentrate on the specific needs of each student by using the PL assessment instrument, we will achieve more significant results in primary school students' PL.\u0000Keywords: Physical Literacy, Assessment, Primary school, Skill competence\u0000 ","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141828456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determinación de la productividad científica de la Revista Española Retos según indicadores bibliométricos: (2016-2024) (Determination of the scientific productivity of the Spanish Journal Retos according to bibliometric indicators: (2016-2024))","authors":"Boryi Alexander Becerra Patiño, Juan David Paucar Uribe, Carlos Felipe Martínez-Benítez, José M. Gamonales","doi":"10.47197/retos.v58.106249","DOIUrl":"https://doi.org/10.47197/retos.v58.106249","url":null,"abstract":"El estudio de la literatura especializada permite conocer las tendencias investigativas sobre un tema de interés común. El conocimiento científico viene vinculado no sólo a la identificación de problemáticas socioculturales particulares sino al estudio de las diferentes poblaciones y áreas del conocimiento. Por tanto, el objetivo del presente estudio fue determinar la productividad académica de la Revista Española Retos según indicadores bibliométricos de la base de datos Scopus. Para ello, se realizó un análisis bibliométrico descriptivo de la producción científica desde el 1 de enero de 2016 hasta el 31 de enero del 2024. Se crearon mapas de co-ocurrencia a partir del programa VOSviewer. Los resultados muestran como la revista Retos en el periodo analizado ha publicado 24 volúmenes y 2571 documentos entre el año 2016 y el 31 de enero de 2024. La categoría de trabajos de investigaciones básicas y/o aplicadas (77.55%) y revisiones teóricas, sistemáticas y/o metaanálisis (12.21%) son los de mayor producción científica. Además, los autores con la mayor cantidad de manuscritos, teniendo en consideración la producción científica publicada son Cid, F.M., (29 documentos), Pereira, F.G., y Ferro, E.F., (22 documentos), y Gamonales, J.M., y Ayubi, N., (16 documentos). Por consiguiente, el presente estudio, demostró que la productividad científica de la revista Retos viene creciendo exponencialmente, y, los temas principales que se abordan son: educación física, y actividad física. Así mismo, la mayoría de las publicaciones provienen de autores e instituciones españolas y chilenas.\u0000Palabras clave: conocimiento, revisión, actividad física, deporte, investigación, bibliometría.\u0000Abstract. The study of specialized literature makes it possible to learn about research trends on a topic of common interest. Scientific knowledge is linked not only to the identification of particular sociocultural problems but also to the study of different populations and areas of knowledge. Therefore, the aim of the present study was to determine the academic productivity of the Spanish journal Retos according to bibliometric indicators of the Scopus database. For this purpose, a descriptive bibliometric analysis of scientific production from January 1, 2016 to January 31, 2024 was performed. Co-occurrence maps were created from the VOSviewer program. The results show how the journal Retos in the analyzed period has published 24 volumes and 2571 papers between 2016 and January 31, 2024. The category of basic and/or applied research papers (77.55%) and theoretical, systematic reviews and/or meta-analysis (12.21%) are the ones with the highest scientific production. In addition, the authors with the highest number of manuscripts, taking into consideration the published scientific production are Cid, F.M., (29 papers), Pereira, F.G., and Ferro, E.F., (22 papers), and Gamonales, J.M., and Ayubi, N., (16 papers). Therefore, the present study showed that the scientific productivity of ","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determinants of nutritional status, students’ learning achievement and physical activity: a cross sectional study in Jayapura City, Papua, Indonesia","authors":"Semuel Piter Irab, Agus Zainuri, Evi Sinaga, Rodhi Rusdianto Hidayat, Yos Wandik, Miftah Faris Prima Putra","doi":"10.47197/retos.v58.107422","DOIUrl":"https://doi.org/10.47197/retos.v58.107422","url":null,"abstract":"Optimal learning achievement is often obtained through the consumption of nutritious and balanced food, which prevents poor nutritional statuses. This is particularly relevant to Junior High School students aged 12-15 years, who are more prone to experience malnutrition. Therefore, this study aimed to investigate determinants of students’ learning achievement according to nutritional status, nutritional knowledge, students’ diet, physical activity, and learning interest. This was a descriptive correlation cross-sectional study. Three hundred and fifty Junior High School students in Jayapura Municipality, Papua Province, Indonesia was involved as sample in this study. The study sample were taken by accidental sampling method. The primary data (knowledge of nutrition, diet, physical activity, interest in learning, nutritional status, and learning achievement) and secondary data were obtained from relevant sources and analyzed using frequency distribution analysis and statistical path analysis tests. The results showed the indirect effect of exogenous variables on the endogenous, where nutritional knowledge and students diet influenced nutritional status (p-value = 0.001), but physical activity had no impact (p-value = 0.167). Meanwhile, the direct effect of exogenous variables on the endogenous showed that nutritional knowledge, interest in learning, and nutritional status influenced students’ achievement (p-value = 0.001). Thus, nutritional status plays a significant role in determining students’ learning achievement. Nutrition knowledge and students diet indirectly affect learning achievement through nutritional status. Nutritional status, nutritional knowledge, and interest in learning directly affect the learning achievement of junior high school students. It is important to improve nutritional status through nutritional knowledge as well as students’ diet, therefore this would eventually improve learning achievement.\u0000Keywords: nutrition status, students, achievement, physical activity, interest in learning","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing recovery: how PNF stretching and ice massage alleviate markers of DOMS?","authors":"R. Ambardini, B. Kushartanti","doi":"10.47197/retos.v58.107992","DOIUrl":"https://doi.org/10.47197/retos.v58.107992","url":null,"abstract":"Delayed onset muscle soreness (DOMS) is a common problem for both trained or untrained individuals that develop after eccentric or unaccustomed exercise. The large number of cases of DOMS and the varying results of research related to the prevention and treatment of DOMS, imply the importance of research in the effective DOMS prevention. The aim of this research was to investigate the post-exercise effects of combination Proprioceptive Neuromuscular Facilitation (PNF) stretching and ice massage on markers of exercise-induced muscle damage (DOMS). Thirty-nine subjects between the ages of 15 to 17 were randomly assigned to either the experimental or control groups. Subjects performed circuit training exercise-induced DOMS. The experimental group underwent 18 minutes of PNF stretching and 16 minutes of ice massage, which was given 2 hours after exercise. The control group did not receive any treatment. DOMS parameters (muscle soreness, creatine kinase/CK, aspartate aminotransferase/AST, neutrophil) and lower extremity functional scale (LEFS) were assessed at 0 and 24 hours after exercise-induced DOMS. The parametric and non-parametric different tests was used in data analysis. The experimental groups showed a reduction in DOMS symptoms in the form of less muscle soreness and AST, better LEFS compared to control groups (p<0.05), but not for creatine kinase and neutrophils (p>0.05) which is an indicator of tissue damage. In conclusion, the combination of postexercise PNF stretching and ice massage was effective in reducing the severity of DOMS, but it was not able to prevent DOMS.\u0000Keywords: PNF Stretching, Ice Massage, DOMS, Creatine Kinase, Muscle Recovery, Exercise-induced Muscle Damage","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Juegos recreativos y su incidencia en el proceso de enseñanza-aprendizaje en los estudiantes de Octavo Año de Educación General Básica (Recreational games and their impact on the teaching-learning process in Basic Education students)","authors":"Lourdes González Romero, Diana Jesús Burgos Mendieta, María de Lourdes Moran González, Jenifer Katherine Miranda Moreira","doi":"10.47197/retos.v58.107272","DOIUrl":"https://doi.org/10.47197/retos.v58.107272","url":null,"abstract":"El objetivo de la investigación se ha centrado en analizar la incidencia de los juegos recreativos en el proceso de enseñanza-aprendizaje en los estudiantes de Octavo Año de Educación General Básica de la Unidad Educativa Dr.Modesto Chávez Franco en la ciudad de Milagro. Para el desarrollo del proceso de investigación se aplica una metodología mixta, empleando la entrevista, observación no participante y encuestas. Los instrumentos correspondieron a una guía de entrevista, ficha de registro observacional los cuales fueron validados por expertos y una encuesta de 6 preguntas cuyo Alfa de Cronbach fue de 874. La muestra se conforma por 75 estudiantes y 3 docentes de octavo año de educación general básica. Los resultados del estudio demostraron que los educadores emplean juegos recreativos en sus clases con poca frecuencia, pero cuando lo hacen los estudiantes participan activamente, cumplen las reglas, interactúan, socializan y logran los aprendizajes trazados. Los estudiantes presentan predisposición para el desarrollo de juegos recreativos en el proceso de enseñanza aprendizaje. Se concluye que los educadores requieren capacitarse respecto a la aplicación de los juegos recreativos en el proceso de enseñanza-aprendizaje y sus beneficios para el desarrollo integral de los estudiantes consecuentemente generando aprendizajes significativos.\u0000Palabras claves: Actividades recreativas, motivación, socio-emocional, desarrollo motriz, recreación.\u0000Abstract. The objective of the research has focused on analyzing the influence of recreational games on the teaching-learning process in the Basic students of the Modesto Chávez Franco Educational Unit in the city of Milagro. To develop the research process, a mixed methodology is applied, using interviews, non-participant observation and surveys. The instruments corresponded to an interview guide, an observational record sheet which were validated by experts, and a 6-question survey whose Cronbach's Alpha was .874. The sample is made up of 75 students and 3 eighth grade teachers. The results of the study showed that educators use recreational games in their classes infrequently, but when they do, students actively participate, follow the rules, interact, socialize and achieve the outlined learning. Students are willing to develop recreational games in the teaching-learning process. It is concluded that educators require training regarding the application of recreational games in the teaching-learning process and their benefits for the development of students and the achievement of significant learning.\u0000Keywords: Recreational activities, motivation, socio-emotional, motor development, recreation.","PeriodicalId":503742,"journal":{"name":"Retos","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141828787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}