The Universidad de Flores (Flores University, UFLO) is a private university in Argentina founded in 1994. As a relatively young university, it is still growing and continues to offer new courses and careers. The main campus is located in the Flores neighborhood of the capital city of Buenos Aires, Argentina. There is also a branch campus located in Cipolletti, Río Negro Province.On the main campus, six faculties offer courses on Physical Activity and Sports; Administration; Law; Engineering; Socio-Environmental Planning; and Psychology and Social Sciences. In 1999 additional careers were made available for study, including Educational Psychology; Architecture; and Graphic Design. UFLO is also home of the Family Businesses' Institute, the Jazz Studies' Institute, the Alternative Conflict Resolution Center, and the Vocational Research and Career Development Center..
Resumen es: La efectividad de la actividad fisica como estrategia de prevencion primaria y secundaria de diversos trastornos cronicos ha sido bien documentada. Recie...
PURPOSE:Although both unresisted sprint training (UST) and resisted sprint training (RST) are widely used in rugby and other team sports, evidence comparing their specific effects on neuromuscular adaptations and strength-related measures is still limited. This study aimed to analyze the effects of two sprint training programs-UST and RST, using 50% of body mass-on secondary outcome measures and force-time characteristics obtained from the squat one-repetition maximum (squat 1RM-strength), associated strength deficits (SDef from 40% to 90% 1RM), isometric squat, Nordic hamstring exercise (NHE), and jump performance in youth rugby players. METHODS:Thirty-five under-19 male rugby players (age: 17.3 ± 0.9 y) volunteered to participate in the study. Players completed the following assessments: (1) UST during a 30-m sprint; (2) isometric squat and squat 1RM-strength; and (3) hamstring eccentric strength via the NHE and countermovement jump tests. RESULTS:Only the UST group showed moderate improvements in 30-m sprint speed (ES = -0.77, 95% CI, -1.43 to 0.07, P < .05). In the isometric squat, both groups demonstrated small-to-moderate increases in force at 200 milliseconds (ES = -0.83 to -0.64, P < .05). In the NHE, the RST group showed large increases in torque and average force across both legs (P < .001, ES = -1.73 to -1.28). Similarly, in the UST group, large increases were observed in NHE average force across both legs (P ≤ .008, ES = -0.99 to -0.92), while NHE impulse was moderately reduced only in the right leg (ES = 0.71, 95% CI, 0.06 to 1.33, P = .031). CONCLUSIONS:Our findings indicate that both UST and RST can be effectively implemented during short in-season periods to maintain sprint performance and strength-related capacities in youth rugby players, especially when time for resistance training is limited or cannot be prioritized. Coaches may therefore select either method according to the specific context, time constraints, and player needs.
Purpose: This study aimed to compare and analyze the physical, technical, and tactical performance of players according to match results and to examine the associations between these indicators and match outcomes in official FIFA competitions. Methods: A total of 299 data samples were collected from 27 elite female players (age: 27 [3.4] y) across 34 official matches between 2018 and 2021. Internal load (ie, rate of perceived exertion) and external load metrics were collected via 10-Hz GPS, which included total distance, high-speed running, player load, number of sprints, accelerations, and decelerations. In addition, technical-tactical performance-number of passes, effective passes, duels, successful duels, and goals scored and conceded- was assessed using InStat software. One-way analysis of variance and multinomial logistic regression were applied. Results: Lost matches showed a higher rate of perceived exertion, total distance, player load, and decelerations, whereas won matches presented significantly greater high-speed running, effective passes, and duels (P < .05). Match outcome was significantly associated with high-speed running, duels won, and goals scored/conceded. Conclusions: Losses are associated with greater physical demands but lower technical-tactical efficiency, whereas wins are characterized by more frequent high-intensity actions and greater technical-tactical effectiveness, particularly in passing and duels. These results suggest that, in female football, performance success depends more on the quality of actions than on overall physical exertion.
El cuidado en la primera infancia constituye un componente central para el bienestar y desarrollo integral de los niños. En este estudio se presenta la construcción y validación de un instrumento destinado a evaluar actitudes de cuidado en madres, padres y cuidadores de niños pequeños de población general en Argentina. Desde un marco teórico con perspectivas cognitivo-sistémicas y humanísticas se definieron siete dimensiones del cuidado: contacto físico sensorial, comunicación, expresión de afecto y aceptación, límites, necesidades básicas, necesidades lúdicas y satisfacción con el rol parental. El instrumento preliminar, compuesto por 55 ítems con opciones de respuesta de tipo Likert, y denominado como Cuestionario de Dimensiones de Cuidado Infantil (CDCI) fue evaluado por expertos y administrado a una muestra de 614 madres, padres y cuidadores de niños de entre 0 a 6 años, el 82,6% seleccionaron el género femenino y 17,4% el masculino, con edades entre 18 y 68 y una media de 36,26 años. Se realizaron análisis factoriales exploratorios y confirmatorios que permitieron depurar el cuestionario, obteniendo cinco dimensiones válidas y fiables: comunicación, expresión de afecto y aceptación, límites, necesidades lúdicas y satisfacción con el rol parental. Las dimensiones contacto físico sensorial y necesidades básicas presentaron indicadores insuficientes. La versión final se ha reducido a 26 ítems. Se evidenciaron adecuados índices de validez estructural y confiabilidad, con coeficientes Alpha de Cronbach y Omega de McDonald aceptables. Este estudio aporta un instrumento sólido para evaluar actitudes de cuidado en la primera infancia, insumos para diseñar intervenciones preventivas y programas psicoeducativos orientados a fortalecer las prácticas parentales en la población general.
This study was designed to explore the longitudinal changes in lower-limb isometric and eccentric strength, vertical jump performance, and sprint speed under similar training regimes but across different positional roles (forwards vs. backs). Participants completed an ≈8-week pre-season program (≈4 sessions/week) comprising training blocks (plyometrics/ballistics, sprint-speed, resistance, endurance); testing was performed one week before and one week after the program. Twenty-four highly trained male rugby players volunteered to participate in the study and were subsequently classified into backs (n = 11, height: 1.79 ± 0.04 m, body mass [BM]: 79.0 ± 5.9 kg) and forwards (n = 13, height: 1.87 ± 0.06 m, BM: 100.0 ± 10.3 kg). Participants completed a testing battery including a 30-meter (m) linear sprint, vertical jump assessments, and lower-limb strength measures: isometric calf (ISO CALF ), hip adduction (ISO ADD ) and abduction (ISO ABD ), hamstring at 90°–20° (ISO 90–20 ), and eccentric hamstring strength via the Nordic hamstring exercise (NHE). Sprint performance improved only in backs (p = 0.022; ES = −0.85). Isometric and eccentric strength assessments demonstrated consistent reductions in maximum impulse for ISO ADD and ISO ABD , irrespective of task, limb, or positional group. Conversely, only backs showed significant increases in maximum force (p = 0.002 to 0.059; ES = 0.71 to 1.41) in ISO CALF , ISO 90–20 , and NHE across both limbs. In conclusion, these findings suggest that, during the initial pre-season period, backs exhibited more favorable sprint and strength adaptations to a general training program than forwards.
