Examinando por Autor "Cresp-Barria, Mauricio"
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Ítem Analysis of Magnitude and Direction of Body Composition Asymmetries in Male Brazilian Jiu-Jitsu Athletes: Pilot Study(Multidisciplinary Digital Publishing Institute (MDPI), 0025-02) Ojeda-Aravena, Alex; Kons, Rafael L; Azócar-Gallardo, Jairo; Dopico-Calvo, Xurxo; Fernández, Aida; Tuesta-Roa, Marcelo; Cresp-Barria, Mauricio; Olivares-Arancibia, Jorge; Báez-San Martín, EduardoIn order to optimize body composition and its components, it is of interest to analyze inter-limb asymmetries in athletes of popular combat sports such as Brazilian Jiu-Jitsu (BJJ). This study aimed to assess the magnitude and direction of body composition asymmetry in competitive male BJJ athletes. Seventeen experienced and competitive male BJJ athletes (age 34.59 ± 8.00 years, 172.94 ± 5.46 cm, BJJ experience 7.88 ± 5.57 years, and 3.71 ± 1.05 days of weekly volume training), including Guard Fighters (n = 7) and Pass Fighters (n = 10), participated in this study. In a single session, whole-body and segmental upper limb and lower limb body composition (BC) was assessed utilizing dual-energy X-ray absorptiometry (DXA). The assessment included total mass (TM), fat mass (FM), fat mass percentage (%FM), fat-free mass (FFM), and bone mineral content (BMC). Absolute differences between limbs were analyzed using a paired t-test. A comparison of BC asymmetries according to combat styles was conducted using an independent t-test. The effect size (ES) was interpreted as Cohen’s d. The main results revealed significant asymmetries in the upper limbs (ULs) of the total group; greater values were found on the left side for TM (p = 0.009, ES = 0.725), FM (p = 0.016, ES = 0.650), FFM (p = 0.026, ES = 0.594), and BMC (p < 0.001, ES = 0.993). In Pass Fighters, differences favored the right side in TM (p = 0.003, ES = 1.277), FM (p = 0.009, ES = 1.039), FFM (p = 0.011, ES = 1.000), and BMC (p < 0.001, ES = 1.916). In contrast, Guard Fighters showed no discrepancies in these parameters. No notable disparities were observed in the lower limbs. This pilot study reveals that BJJ athletes present significant asymmetries in BC, particularly in the ULs, with a marked predominance on the right side, especially in Pass Fighters. © 2025 by the authors.Ítem Configuración Dermatoglífica, ACTN3 y ECA: Un estudio transcultural en deportistas de diferentes Disciplinas(Federacion Espanola de Docentes de Educacion Fisica, 2022) Hernández-Mosqueira, Claudio; Castillo-Quezada, Humberto; Peña-Troncoso, Sebastián; Joao, Andrea; Moraga Muñoz, Rodrigo; Cresp-Barria, Mauricio; Caniuqueo-Vargas, Alexis; Fernandes da Silva, Sandro; Fernandes Filho, JoseEl rendimiento físico se ha asociado con diferentes variantes genéticas. El objetivo de este estudio fue determinar la asociación entre características dermatoglíficas y los genotipos ACTN3 y ECA. La muestra la constituyen 82 seleccionados nacionales de diferentes modalidades deportivas de Brasil, Japón y Chile. Los marcadores ACTN3 y ECA se obtuvieron a través de una muestra de saliva y se analizaron mediante el empleo de cadena de la polimerasa en tiempo real a partir del iQ5ThermalCycler, BioRad, mientras que para la configuración dermatoglifica se utilizó un lector de huella digital Verifier® 320 LC 2.0. Estos deportistas fueron clasificados en grupos de acuerdo a la configuración de sus patrones dermatoglíficos (A, L, W, D10 y SQTL) en los siguientes grupos: aeróbicos (n= 27); anaeróbicos (n= 55). En cuanto a la frecuencia de aparición de polimorfismos, para ambos grupos predomina el genotipo RX 48,0% y 49,1% de ACTN3, y DI 68,0% y 41,3% para ECA, en los grupos aeróbico y anaeróbico respectivamente. En el grupo aeróbico se observa una asociación muy alta entre ACTN3 con presilla, verticilo y D10 (r=0,90), en el grupo anaeróbico solo observa asociación alta en presilla (r=0,77), para el gen ECA se observan asociaciones moderadas entre presilla, verticilo y D10 (r=0,45), en el grupo aeróbico. Conclusión: Las características dermatoglíficas pueden estar asociados con la variante alélica del gen ACTN3 (RR) y ECA (DI), para perfiles deportivos de carácter anaeróbico.Ítem Perfil Antropométrico de Futbolistas profesionales de acuerdo a la posición ocupada en el Campo de Juego(Federacion Espanola de Docentes de Educacion Fisica, 2022) Hernández-Mosqueira, Claudio; Castillo-Quezada, Humberto; Peña-Troncoso, Sebastián; Hermosilla-Palma, Felipe; Pavez-Adasme, Gustavo; da Silva, Sandro Fernandes; Caniuqueo-Vargas, Alexis; Cresp-Barria, Mauricio; González, Hugo Velásquez; Filho, Jose FernandesObjective: Analyze the anthropometric characteristics of Chilean professional soccer players divided according to the position they occupy in the field of play. Method: One hundred and fifty-eight (n = 158) professional soccer players divided into Archers (AR) Defenses (DEF) Volantes (VOL) and Forwards (FOR), with average Age values (24.2 ±4.76 years, body mass 75.0±7.28 kg and height 175.7±6.32 cm.), All belonging to the Ñublense Sports Club of the city of Chillan, Chile. An assessment of the body composition was made using the 5 component fractionation, somatotype, body mass index, sum of six skinfolds and the muscle-bone relationship, following the protocol of the International Society for the Advancements of Kinanthropometry. Results: Regarding body composition, mean values of Adipose Mass = 21.7%, Muscular Mass = 48.9%, Residual Mass = 12.4%, Bone Mass = 11.4% and Skin Mass = 5.2% were obtained. In relation to the somatotype, a balanced mesomorphic classification was obtained with mean values 2.5 - 5.4 - 2.1. Conclusion: According to the position they occupy on the pitch, the professional players of the Ñublense soccer club present a somatotype similar to that of other national and international soccer players, where the balanced mesomorphic component predominates. However, there is an increase in the percentages of adipose mass (AM) and a smaller stature, compared to international soccer players, which can determine clear differences in performance with respect to playing positions in competitive situations. © Copyright: Federación Española de Asociaciones de Docentes de Educación Física (FEADEF).Ítem Reasons to practice physical activity in ecuadorian university students(Retos, Volume 62, Pages 1 - 9January 2025, 2025) León-Reyes, Borys; Nuñez, León Arguello; Herrera, Yosbanys Roque; Cresp-Barria, Mauricio; Souza-Lima, Josivaldo; Galeano-Rojas, DilanThe aim of the present study was to analyze the reasons for practicing PA among university students in the Ecuadorian context, determine the differences according to sex and work-study compatibility, establish the association between the reasons for practicing PA, and estimate the predictive value of sex, age, and work-study compatibility on the reasons for practicing PA. The sample consisted of 1412 university students (21.2 ± 3.5 years), 513 men (36.3%) and 899 women (63.7%). The instrument used for data collection was the Goals in Exercise Content Questionnaire. The Mann-Whitney U test, Spearman's correlation coefficient and a linear regression analysis were used to analyze the results. The main findings show that there are statistically significant differences between men and women in the reasons of social affiliation, health direction, social recognition and skill development. Also, statistical differences are observed between women who do or do not combine study and work in the reasons of social affiliation, social recognition and skill development. On the other hand, the main motivation for PA is health, while the motive that least encourages the practice of PA is social recognition. Finally, in the regression analysis, sex presented a significant predictive value in the motives analyzed. Therefore, the interests of Ecuadorian students are revealed, and key information is obtained to improve and increase the levels and adherence to PA in order to contribute to a more physically active life in the university population. © 2025 Federacion Espanola de Docentes de Educacion Fisica. All rights reserved.