Examinando por Autor "Ramírez-Campillo, Rodrigo"
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Ítem Association of maximal voluntary isometric handgrip strength with age, gender and handedness in older people(Sociedad Medica de Santiago, 2018) Hernández-Martínez, Jordan; Cisterna, Diego; Ramírez-Campillo, Rodrigo; Álvarez, Cristian; Guede-Rojas, Francisco; Fuente, Carlos de la; Castro-Sepúlveda, Mauricio; Moran, JasonIndexed keywords SciVal Topics Metrics Abstract Background: Maximal voluntary isometric handgrip strength (MVIHS) is influenced by age, sex, and handedness. Aim: To assess the association of MVIHS with age, sex, and handedness in older adults. Material and Methods: MVIHS was measured using a digital dynamometer in 60 men and 60 women aged 73 ± 6 years. Weight, height and handedness were also recorded. For analysis purposes, participants were divided into two age groups (65 to 70.9 years of age and ≥ 71 years). Results: A negative correlation was observed between age and MVIHS in the non-dominant (r = -0.65 and -0.59 in men and women, respectively) and dominant hands (r = -0.71 and -0.64 in men and women, respectively). When age and MVIHS were correlated in the group aged 65-70 years, a significant correlation was observed in the non-dominant (r = -045 and -0.61 in men and women, respectively) and dominant hands (r = -0.47 and -0.64 in men and women, respectively). In the group aged ≥ 71 years, a stronger correlation with age was also observed in the non-dominant (r = -0.92 and -0.90 in men and women, respectively) and dominant hands (r = -0.95 and -0.90 in men and women, respectively). MVIHS was 2.8 to 8.9% lower in the non-dominant than in the dominant hand in all age groups. MVIHS was lower in women than in men in both age groups. Conclusions: MVIHS declines with age (especially after 71 years of age), is higher in men than women, and higher in the dominant than the non-dominant hand. © 2018, Sociedad Medica de Santiago. All rights reserved.Ítem Can Complex Training Improve Acute and Long-Lasting Performance in Basketball Players? A Systematic Review(Multidisciplinary Digital Publishing Institute (MDPI), 2024-10) Flórez Gil, Enrique; Vaquera, Alejandro; Ramírez-Campillo, Rodrigo; Sanchez-Sanchez, Javier; Rodríguez Fernández, AlejandroBasketball demands a sophisticated blend of tactical, technical, physical, and psychological skills, and various methods have been proposed to prepare players for these demands, including resistance training to enhance strength, power, speed, agility, and endurance. Complex training (CT) integrates diverse strength training methodologies by combining heavy-resistance exercises (e.g., squat at 90% of one repetition maximum) with high-velocity movements or plyometrics, both sharing the same biomechanical pattern. However, the optimal application of CT in basketball remains uncertain due to diverse protocols and a lack of consensus in the literature. The aim of this systematic review was to evaluate the acute and chronic effects of CT interventions on physical fitness performance in basketball players and identify the most effective characteristics of moderators. Methods: A bibliographic search was conducted using PubMed, SCOPUS, and Web of Science databases following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines using the PICOS strategy. Results: Fourteen studies met the inclusion criteria, three articles analyzed acute effects, and thirteen analyzed chronic effects. The total number of participants in the studies analyzing acute effects was 50, while for studies examining chronic effects, it was 362. Conclusions: Acutely, CT triggers post-activation potentiation and enhances sprint performance when coupled with brief rest intervals. Over time, these acute improvements contribute to more substantial, long-lasting benefits. Chronic effects of CT improve strength, as evidenced by enhanced 1 RM performance, jumps, sprints, and core muscle strength.Ítem Effects of six weeks outdoor versus treadmill running on physical fitness and body composition in recreationally active young males: a pilot study(PeerJ Inc., 2022-07) Singh, Gaurav; Kushwah, Gaurav; Singh, Tanvi; Ramírez-Campillo, Rodrigo; Thapa, Rohit K.Background: Running as exercise may be performed either on an outdoor surface or treadmill surface. However, previous research has indicated that the nature of both the surfaces differ significantly and therefore the training outcomes from running in these surfaces may also vary. Aim: Therefore, the aim of this pilot study was to compare the effects of 6-weeks of supervised outdoor running (OT) vs treadmill running (TT) on physical fitness and body composition in recreationally active young males. Methods: Participants (age: 19.82 ± 1.28 years, height: 172.6 ± 4.9 cm, body mass: 64.3 ± 8.7 kg) were randomly assigned to OT (n = 14) or TT (n = 14), and assessed for physical fitness, i.e., 50 m sprint, cardiorespiratory endurance (i.e., 1,600 m run time-trial), standing long jump (SLJ), flexibility (i.e., sit-and-reach test), and upper-body muscle endurance (i.e., push-ups repetitions), alongside body composition, i.e., body mass, body mass index (BMI), fat percentage, fat free mass, and leg skeletal muscle mass (SMM). A two (pre-post intervention) by two (OT, TT) mixed ANOVA analysed exercise-specific effects. For significant group-by-time interactions, Bonferroni adjusted paired (within-group) and independent (between-group comparisons at post) t-tests were used for post-hoc analyses. Results: Significant time-effect was found in all physical fitness variables (all p < 0.001, η2p = 0.67–0.91), body mass (p = 0.23, η2p = 0.18), BMI (p = 0.009, η2p = 0.24), body fat percentage (p = 0.001, η2p = 0.38), and leg SMM (p = 0.002–0.007, η2p = 0.25–0.33). Significant group-by-time interaction was found for 50 m sprint (p = < 0.001, η2p = 0.74), 1,600 m run (p = 0.001, η2p = 0.35), and SLJ (p < 0.001, η2p = 0.43), favouring OT. Group-specific post-hoc tests showed improvements in all physical fitness variables after OT (p = < 0.001–0.001, g = 0.69–2.32, %Δ = 3.0–12.4) and TT (p = < 0.001–0.017, g = 0.15–0.65, %Δ = 0.9–11.7), and fat percentage after OT and TT (p = 0.002–0.041, g = 0.14–0.26, %Δ = 4.3–6.0). However, leg SMM decreased in TT (p = 0.001–0.004, g = 0.14–0.15, %Δ = 6.2–6.7). Conclusions: Both OT and TT improved physical fitness and decreased fat percentage. However, compared to TT, the OT intervention preserved leg SMM and induced greater physical fitness improvements. Copyright 2022 Singh et al.Ítem Estrategias de calentamiento y rendimiento contrarreloj en nadadores. Revisión rápida de la literatura(Retos. Volume 47, Pages 238 - 248. 2023, 2023) Enríquez-Enríquez, Diego; Mecina-Zapata, Carlos; Riveros-Cárcamo, Hernán; Jerez-Mayorga, Daniel; Ramírez-Campillo, Rodrigo; Chirosa-Ríos, Luis Javier; Guede-Rojas, FranciscoEl propósito de este estudio fue analizar la efectividad de diversas estrategias de calentamiento sobre el rendimiento en pruebas contrarreloj hasta 200-m, mediante una revisión rápida de la literatura. Utilizando directrices PRISMA, se realizó una búsqueda en la base de datos MEDLINE/Pubmed considerando estudios experimentales desde el año 2013. La calidad metodológica se evaluó mediante la escala PEDro. De 181 registros iniciales se incluyeron finalmente 16 estudios. Todos presentaron un diseño metodológico cruzado con calidad baja (tres estudios), regular (12 estudios) y buena (un estudio). Participó un total de 161 hombres y 75 mujeres con edad media de 17.96 años, compitiendo a nivel universitario, nacional o internacional. Estrategias de calentamiento activo en el agua mejoraron el tiempo de la prueba hasta en un 1.48%. La reducción de la fase de transición posterior a la realización de calentamiento activo en el agua mejoró el tiempo hasta en un 1.50%. Estrategias adicionales al calentamiento activo en el agua, mejoraron el tiempo hasta en un 2.04%. A partir de esta revisión, se concluye que no existe suficiente evidencia que sustente el uso de las diversas estrategias de calentamiento sobre el rendimiento en pruebas contrarreloj; no obstante, sus porcentajes de reducción del tiempo representan una opción interesante para nadadores y entrenadores en entornos competitivos.Ítem Lifestyle and cardiometabolic risk factors in the ethnic and non-ethnic population > 15 years of age: results from the National Chilean Health Survey 2016-2017(ARAN Ediciones S.L, 2023-03) Álvarez, Cristian; Ramírez-Campillo, Rodrigo; Miranda-Fuentes, Claudia; Ibacache-Saavedra, Paulina; Campos-Jara, Christian; Cristi-Montero, Carlos; Molina-Sotomayor, Edgardo; Caparrós-Manosalva, Cristian; Delgado-Floody, PedroBackground: lifestyle and cardiometabolic risk factors information is scarce regarding youth and adults of Latin-American ethnics. Objective: the primary aim was to describe the lifestyle and cardiometabolic risk factors for arterial hypertension (HTN) and diabetes in ethnic Latin-American groups (Mapuche and Aymara) and other non-ethnics > 15 years of age in the Chilean population. A secondary aim was to determine the association between physical activity ‘intensity’ with HTN and diabetes markers. Material and methods: a representative sample from the National Chilean Health Survey 2016-2017, included Mapuche (EG-Map; women n = 166, men n = 300; total n = 466), Aymara (EG-Aym; women n = 96, men n = 55; total n = 151), and a non-ethnic population group (No-EG; women n = 2057, men n = 3445; total n = 5502). The main outcomes were; systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting plasma glucose (GL), and secondary outcomes were other anthropometric, lipid profile, and lifestyle parameters. Results: GL was significantly associated with nutrition (0.9 %, p < 0.0001), tobacco and alcohol habits (0.6 %, p < 0.0001). SBP was significantly associated with nutrition (whole-grains 0.04, p = 0.001; water consumption 0.07, p < 0.0001), sleep hygiene (week 0.04, p = 0.030; on weekends-0.04, p = 0.026), and alcohol consumption (-0.06, p < 0.0001). Conclusion: in conclusion, lifestyle differences among Mapuche and Aymara ethnic groups in comparison with non-ethnic Chilean peers > 15 years are significantly associated with blood pressure and glycemia. © 2023 SENPE y©Arán Ediciones S.L.Ítem Regional fat changes induced by localized muscle endurance resistance training(Lippincott, Williams & Wilkins, 2013-08) Ramírez-Campillo, Rodrigo; Andrade, David C.; Campos-Jara, Christian; Henríquez-Olguín, Carlos; Alvarez-Lepín, Cristian; Izquierdo, MikelThe purpose of this study was to examine the effects of a localized muscle endurance resistance training program on total body and regional tissue composition. Seven men and 4 women (aged 236 1 years) were trained with their nondominant leg during 12 weeks, 3 sessions per week. Each session consisted of 1 set of 960-1,200 repetitions (leg press exercise), at 10-30% 1 repetition maximum. Before and after training, body mass, bone mass, bone mineral density (BMD), lean mass, fat mass, and fat percentage were determined by dual-emission x-ray absorptiometry. Energy intakes were registered using a food recall questionnaire. At the wholebody level, body mass, bone mass, BMD, lean mass, or body fat percentage were not significantly changed. However, body fat mass significantly decreased by 5.1% (preexercise: 13.5 6 6.3 kg; postexercise: 12.8 ± 5.4 kg, p < 0.05). No significant changes in bone mass, lean mass, fat mass, or fat percentage were observed in both the control and trained leg. A significant (p < 0.05) decrease in fat mass was observed in the upper extremities and trunk (10.2 and 6.9%, respectively, p < 0.05). The reduction of fat mass in the upper extremities and trunk was significantly greater (p < 0.05) than the fat mass change observed in the trained leg but not in the control leg. No significant changes were observed in energy intake pre- and postexercise intervention (2,646 ± 444 kcal$d21 and 2,677 ± 617 kcal$d21, respectively). In conclusion, the training program was effective in reducing fat mass, but this reduction was not achieved in the trained body segment. The present results expand the limited knowledge available about the plastic heterogeneity of regional body tissues when a localized resistance training program is applied. © 2013 National Strength and Conditioning Association.