Rodrigo Ramírez‐Campillo, Angélica Del Castillo, Carlos De la Fuente, Christian Campos‐Jara, David C. Andrade, Cristián Álvarez, Cristian Martínez‐Salazar, Mauricio Castro‐Sepúlveda, Ana Pereira, Mário C. Marques, Míkel Izquierdo,
To examine the effects of 12 weeks of high-speed resistance training (RT) versus low-speed RT on muscle strength [one repetition of maximum leg-press (1RMLP) and bench-press (1RMBP), plus dominant (HGd) and non-dominant maximum isometric handgrip], power [counter-movement jump (CMJ), ball throwing (BT) and 10-m walking sprint (S10)], functional performance [8-foot up-and-go test (UG) and sit-to-stand test (STS)], and perceived quality of life in older women. 45 older women were divided into a high-speed RT ...
Tópico(s): Balance, Gait, and Falls Prevention
2014 - Elsevier BV | Experimental Gerontology
Adrián A. Correndo, Flavio H. Gutiérrez Boem, Fernando O. García, Carolina Álvarez, Cristián Álvarez, Ariel Angeli, Pablo Barbieri, Mirian Barraco, A. Berardo, Miguel Boxler, Pablo Calviño, Julia Ester Capurro, Hector Guillermo Carta, O.P. Caviglia, Ignacio A. Ciampitti, Martín Díaz‐Zorita, Santiago Díaz-Valdéz, Hernán E. Echeverría, Gabriel Espósito, Manuel Ferrari, Gustavo Néstor Ferraris, Sebastian Pedro Gambaudo, Vicente Gudelj, Juan P. Ioele, Ricardo J.M. Melchiori, Josefina Molino, Juan Orcellet, Agustín Pagani, Juan Manuel Pautasso, Nahuel I. Reussi Calvo, Matías Redel, Sergio Rillo, Helena Rimski‐Korsakov, Hernán Sainz-Rozas, Matías Gastón Saks, Ma. Guadalupe Tellería, Luis Alberto Ventimiglia, Jose L. Zorzín, María M. Zubillaga, Fernando Salvagiotti,
The most widely used approach for prescribing fertilizer nitrogen (N) recommendations in maize (Zea Mays L.) in Argentina is based on the relationship between grain yield and the available N (kg N ha−1), calculated as the sum of pre-plant soil NO3--N at 0−60 cm depth (PPNT) plus fertilizer N (Nf). However, combining covariates related to crop N demand and soil N supply at a large national scale remains unexplored for this model. The aim of this work was to identify yield response patterns associated ...
Tópico(s): Plant nutrient uptake and metabolism
2021 - Elsevier BV | Field Crops Research
Rodrigo Ramírez‐Campillo, César Meylan, Cristián Álvarez, Carlos Henríquez‐Olguín, Cristian Martínez‐Salazar, Rodrigo Cañas-Jamett, David C. Andrade, Míkel Izquierdo,
Integrating specific training methods to improve explosive actions and endurance in youth soccer is an essential part of players' development. This study investigated the efficiency of short-term vertical plyometric training program within soccer practice to improve both explosive actions and endurance in young soccer players. Seventy-six players were recruited and assigned either to a training group (TG; n = 38; 13.2 ± 1.8 years) or a control group (CG; n = 38; 13.2 ± 1.8 years) group. All players trained ...
Tópico(s): Cardiovascular and exercise physiology
2013 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Rodrigo Ramírez‐Campillo, César Meylan, Cristián Álvarez, Carlos Henríquez‐Olguín, Cristian Martínez‐Salazar, David C. Andrade, Mauricio Castro‐Sepúlveda, Carlos Burgos, Eduardo Báez-San Martín, Míkel Izquierdo,
Ramírez-Campillo, R, Meylan, CMP, Álvarez-Lepín, C, Henriquez-Olguín, C, Martinez, C, Andrade, DC, Castro-Sepúlveda, M, Burgos, C, Baez, EI, and Izquierdo, M. The effects of interday rest on adaptation to 6 weeks of plyometric training in young soccer players. J Strength Cond Res 29(4): 972–979, 2015—The purpose of this study was to determine the effects of short-term plyometric training interposed with 24 or 48 hours of rest between training sessions on explosive and endurance adaptations in young ...
Tópico(s): Cardiovascular and exercise physiology
2013 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Produção Nacional
Revisado por pares
Cristián Álvarez, Rodrigo Ramírez‐Campillo, Cristian Martínez‐Salazar, Rodrigo Mancilla, Marcelo Flores‐Opazo, Johnattan Cano-Montoya, Emmanuel Gomes Ciolac,
Our purpose was to investigate the effects of low-volume, high-intensity interval training (HIT) on cardiometabolic risk and exercise capacity in women with type 2 diabetes mellitus (T2DM). Sedentary overweight/obese T2DM women (age=44.5±1.8 years; BMI=30.5±0.6 kg/m(2)) were randomly assigned to a tri-weekly running-based HIT program (n=13) or non-exercise control follow-up (CON; n=10). Glycemic control, lipid and blood pressure levels, endurance performance, and anthropometry were measured before and ...
Tópico(s): Muscle metabolism and nutrition
2016 - Thieme Medical Publishers (Germany) | International Journal of Sports Medicine
Produção Nacional
Revisado por pares
Cristián Álvarez, Rodrigo Ramírez‐Campillo, Cristian Martínez‐Salazar, Angélica Del Castillo, Francisco Gallardo-Fuentes, Emmanuel Gomes Ciolac,
Abstract Sedentary overweight or obese adult (age<60 years) women, allocated in type 2 diabetes mellitus (T2DM, n=13), dyslipidemia alone (DYS, n=12), dyslipidemia associated with hyperglycaemia (DYSHG, N=12), or healthy control (CON, n=10) groups, had their lipid, glucose, blood pressure, endurance performance, and anthropometry variables assessed before and after 16 weeks of a thrice-weekly high-intensity interval training (HIIT) program. Triglycerides reduced significantly (P<0.05) in all groups, ...
Tópico(s): Physical Activity and Health
2018 - Thieme Medical Publishers (Germany) | International Journal of Sports Medicine
Produção Nacional
Revisado por pares
Cristián Álvarez, Alejandro Lucía, Rodrigo Ramírez‐Campillo, Cristian Martínez‐Salazar, Pedro Delgado‐Floody, Eduardo Lusa Cadore, Alicia M. Alonso‐Martínez, Míkel Izquierdo,
While altered sleep patterns (ie, low sleep time) have been studied and reported in adults as a new cardiometabolic risk factor, less information is available on how sleep patterns impact children of different ethnicities. The aim of this study was to compare the levels of blood pressure and other cardiometabolic risk factors in relation to different levels of sleep time in schoolchildren of Amerindian Mapuche or European-ancestry of Southern Chile.In a cross-sectional study, 540 Chilean schoolchildren ( ...
Tópico(s): Health and Lifestyle Studies
2019 - Wiley | American Journal of Human Biology
Cristián Álvarez, Rodrigo Ramírez‐Campillo, Robinson Ramírez‐Vélez, Cristian Martínez‐Salazar, Mauricio Castro‐Sepúlveda, Alicia M. Alonso‐Martínez, Míkel Izquierdo,
Tópico(s): Physical Activity and Health
2017 - Springer Nature | International Journal of Obesity
Rodrigo Ramírez‐Campillo, Cristián Álvarez, Carlos Henríquez‐Olguín, Eduardo Báez-San Martín, Cristian Martínez‐Salazar, David C. Andrade, Míkel Izquierdo,
The purpose of this study was to examine the effect of a short-term plyometric training program on explosive strength and endurance performance in highly competitive middle- and long-distance runners. Athletes were randomly assigned to a control group (CG, n = 18, 12 men) and an explosive strength training group (TG, n = 18, 10 men). Drop jump (DJ) from 20 (DJ20) and 40 cm (DJ40), countermovement jump with arms (CMJA), 20-m sprint time, and 2.4-km endurance run time test were carried out before and after ...
Tópico(s): Lower Extremity Biomechanics and Pathologies
2013 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Cristián Álvarez, Rodrigo Ramírez‐Campillo, Carlos Henríquez‐Olguín, Mauricio Castro‐Sepúlveda, Vanesa Carrasco, Cristian Martínez‐Salazar,
Eight weeks of combined high intensity intermittent exercise normalized altered metabolic parameters in womenBackground: Short term physical training programs may improve insulin resistance and hyperglycemia.Aim: To assess the effects of eight weeks of combined exercise program on serum lipids and glycemic level in women with hyperglycemia and hypercholesterolemia. Patients and Methods: Ten healthy women, nine women with hyperglycemia, ten with hypercholesterolemia and nine with hyperglycemia/hypercholesterolemia ...
Tópico(s): Heart Rate Variability and Autonomic Control
2014 - Q16635223 | Revista médica de Chile
Elke Noellemeyer, Federico Frank, Cristián Álvarez, Germán Morazzo, Alberto Quiroga,
Tópico(s): Soil and Unsaturated Flow
2008 - Elsevier BV | Soil and Tillage Research
Cristián Álvarez, Aurora Orejas, S. Ben-Aicha Gonzalez, Ramón Díaz, Lluı́s Colomo,
Abstract We measured total cholesterol, high-density-lipoprotein cholesterol, low-density-lipoprotein cholesterol, triglycerides, apoprotein A, and apoprotein B in serum. The subjects were a volunteer group of 145 white people (50 men and 95 women) ranging in age between 65 and 95 years, who were not receiving medical treatment and had no disease that could influence lipid metabolism. Before further categorization, we saw no significant sex-related difference in any of these lipid constituents. The ...
Tópico(s): Liver Disease Diagnosis and Treatment
1984 - American Association for Clinical Chemistry | Clinical Chemistry
We studied the alterations in the concentrations of total cholesterol, high-density lipoprotein cholesterol, triglycerides, and apoproteins A and B in serum of 54 patients hospitalized for various reasons, who developed sepsis during their stay. Forty of these patients required intensive care, 14 did not. Another group of patients with the same underlying pathological conditions was used as a control. We found the following: Sepsis causes the concentrations of total cholesterol, high-density lipoprotein ...
Tópico(s): Cancer, Lipids, and Metabolism
1986 - American Association for Clinical Chemistry | Clinical Chemistry
Héctor Ulloa, Andrés Iroumé, Mario Aristide Lenzi, Andrea Andreoli, Cristián Álvarez, Víctor Barrera,
Previous researches indicated that in-stream large wood (LW) depended on the characteristics of the riparian vegetation.This is the first study about LW abundance, longitudinal distribution and sediment trapped by large wood structures comparing two stream segments in catchments with contrasting land use, located in the Coastal Mountain Range, Southern Chile.One such catchment (Vuelta de Zorra) is covered mainly by native forests and the other (Pichún) runs under productive plantations.In a stream ...
Tópico(s): Tree Root and Stability Studies
2011 - Austral University of Chile | Bosque (Valdivia)
Rodrigo Ramírez‐Campillo, David C. Andrade, Christian Campos‐Jara, Carlos Henríquez‐Olguín, Cristián Álvarez, Míkel Izquierdo,
The 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 23 ± 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 ...
Tópico(s): Thermoregulation and physiological responses
2012 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Cristián Álvarez, Rodrigo Ramírez‐Campillo, Marcelo Flores‐Opazo, C. E. A. Züñiga, Carlos Celis‐Morales,
Effect of sprint interval training and resistance exercise on metabolic markers in overweight womenBackground: Physical activity is associated with an improvement in cardiovascular health, however there is a paucity of information about the effects of sprint interval training on individuals with high metabolic risk.Aim: To determine the effects of three exercise programs on anthropometric and metabolic markers in overweight, sedentary and prediabetic women.Material and Methods: Forty three women ...
Tópico(s): Physical Activity and Health
2012 - Q16635223 | Revista médica de Chile
David C. Andrade, Carlos Henríquez‐Olguín, A. Beltrán, Marco A. Ramírez, Cristian Labarca, Marcelo Cornejo, Cristián Álvarez, Rodrigo Ramírez‐Campillo,
The purpose of this study was to compare the acute effects of general, specific and combined warm-up (WU) on explosive performance. Healthy male (n = 10) subjects participated in six WU protocols in a crossover randomized study design. Protocols were: passive rest (PR; 15 min of passive rest), running (Run; 5 min of running at 70% of maximum heart rate), stretching (STR; 5 min of static stretching exercise), jumping [Jump; 5 min of jumping exercises - 3x8 countermovement jumps (CMJ) and 3x8 drop jumps from ...
Tópico(s): Cardiovascular and exercise physiology
2014 - Termedia Publishing House | Biology of Sport
Rodrigo Ramírez‐Campillo, Carlos Burgos, Carlos Henríquez‐Olguín, David C. Andrade, Cristian Martínez‐Salazar, Cristián Álvarez, Mauricio Castro‐Sepúlveda, Mário C. Marques, Míkel Izquierdo,
The aim of the study was to compare the effects of bilateral, unilateral, or combined bilateral and unilateral plyometric training (PT) on muscle power output, endurance, and balance performance adaptations in young soccer players. Four groups of young soccer players (age 11.4 ± 2.2 years) were divided into control group (CG; n = 14), bilateral group (BG; n = 12), unilateral group (UG; n = 16), and bilateral + unilateral group (B + UG; n = 12). Players were measured in unilateral and bilateral countermovement jump ...
Tópico(s): Sport Psychology and Performance
2014 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Rodrigo Mancilla, Paola Torres, Cristián Álvarez, Ingrid Schifferli, J Sapunar, Erik Díaz-Bautista,
High intensity interval training improvesglycemic control and aerobic capacity in glucose intolerant patients
Tópico(s): Diet and metabolism studies
2014 - Q16635223 | Revista médica de Chile
Produção Nacional
Revisado por pares
Rodrigo Ramírez‐Campillo, Francisco Gallardo-Fuentes, Carlos Henríquez‐Olguín, César Meylan, Cristian Martínez‐Salazar, Cristián Álvarez, Alexis Caniuqueo Vargas, Eduardo Lusa Cadore, Míkel Izquierdo,
Ramírez-Campillo, R, Gallardo, F, Henriquez-Olguín, C, Meylan, CMP, Martínez, C, Álvarez, C, Caniuqueo, A, Cadore, EL, and Izquierdo, M. Effect of vertical, horizontal, and combined plyometric training on explosive, balance, and endurance performance of young soccer players. J Strength Cond Res 29(7): 1784–1795, 2015—The aim of this study was to compare the effects of 6 weeks of vertical, horizontal, or combined vertical and horizontal plyometric training on muscle explosive, endurance, and balance ...
Tópico(s): Sports Dynamics and Biomechanics
2015 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Rodrigo Ramírez‐Campillo, Carlos Henríquez‐Olguín, Carlos Burgos, David C. Andrade, Daniel Zapata, Cristian Martínez‐Salazar, Cristián Álvarez, Eduardo Báez-San Martín, Mauricio Castro‐Sepúlveda, Luis Peñailillo, Míkel Izquierdo,
The purpose of the study was to compare the effects of progressive volume-based overload with constant volume-based overload on muscle explosive and endurance performance adaptations during a biweekly short-term (i.e., 6 weeks) plyometric training intervention in young soccer players. Three groups of young soccer players (age 13.0 ± 2.3 years) were divided into: control (CG; n = 8) and plyometric training with (PPT; n = 8) and without (NPPT; n = 8) a progressive increase in volume (i.e., 16 jumps per leg per ...
Tópico(s): Sports injuries and prevention
2015 - Lippincott Williams & Wilkins | The Journal of Strength and Conditioning Research
Carlos Celis‐Morales, Carlos Salas, Anas Alduhishy, Ruth Sanzana, María Adela Martínez-Sangüinetti, Ana María Leiva, Ximena Díaz, Cristian Martínez‐Salazar, Cristián Álvarez, Jaime Leppe, C. Alexandra Munro, Mario Siervo, Naomi D. Willis,
Surveillance of physical activity (PA) is essential for the development of health promotion initiatives. The aim of the present study was to examine the prevalence of PA and sedentary behaviour with respect to socio-demographic factors in Chile.A representative sample of 5434 adults aged ≥15 years (59% women) who participated in the Chilean National Health Survey (2009-2010) were included. Socio-demographic data (age, sex, environment, education level, income level and smoking status) were collected ...
Tópico(s): Mobile Health and mHealth Applications
2015 - Oxford University Press | Journal of Public Health
Carlos Celis‐Morales, Carlos Salas, Cristián Álvarez, Nicolás Aguilar-Farías, Rodrigo Ramírez Campillos, Jaime Leppe, Carlos Cristi‐Montero, Ximena Díaz-Martínez, Eliana Durán, Ana María Labraña, María Adela Martínez-Sangüinetti, Ana María Leiva, Naomi D. Willis,
Little is known about the relationship between physical activity (PA) and cardiovascular risk factors in the Chilean population.To investigate the association between different levels and intensities of PA and the prevalence of cardiovascular (CV) risk factors in Chilean adults.Data from the National Health Survey 2009-10 including 5157 participants, provided by the Epidemiology Department of the Ministry of Health, was analyzed in this study. The prevalence of type 2 diabetes mellitus, hypertension, ...
Tópico(s): Obesity, Physical Activity, Diet
2015 - Q16635223 | Revista médica de Chile
Patricio Meleán, Adrian Zuniga, Michael Marsalli, Nelson A. Fritis, Erik R. Cook, Matías Zilleruelo, Cristián Álvarez,
Background Surgical treatment with open reduction and internal fixation (ORIF) of displaced middle-third clavicular fractures resulted in shorter complete return to work periods with earlier consolidation documented on computed tomography (CT) scans in this prospective, randomized controlled trial. Methods The study randomized 76 consecutive patients with displaced fractures (2B1-2B2 according to Robinson) to conservative (C, n= 42) and surgical (S, n = 34) treatment with plates and screws. Bone union was documented ...
Tópico(s): Orthopedic Surgery and Rehabilitation
2015 - Elsevier BV | Journal of Shoulder and Elbow Surgery
Carlos Cristi‐Montero, Carlos Celis‐Morales, Rodrigo Ramírez‐Campillo, Nicolás Aguilar-Farías, Cristián Álvarez, Fernando Rodríguez‐Rodríguez,
Sr. Editor: En el ano 2010, la Organizacion Mundial de la Salud estimo que 3,2 millones de personas mueren cada ano en el mundo debido a “inactividad fisica”, convirtiendose en el cuarto factor de riesgo mas importante asociado a mortalidad1. No obstante, durante la ultima decada el “sedentarismo” se ha convertido en otro potente factor de riesgo asociado a enfermedades cronicas no transmisibles y mortalidad1-3. Si bien ambos conceptos (“inactividad fisica” y “sedentarismo”) se relacionan4, es crucial ...
Tópico(s): Obesity, Physical Activity, Diet
2015 - Q16635223 | Revista médica de Chile
Produção Nacional
Revisado por pares
Rodrigo Ramírez‐Campillo, Marcelo Vergara-Pedreros, Carlos Henríquez‐Olguín, Cristian Martínez‐Salazar, Cristián Álvarez, Fábio Yuzo Nakamura, Carlos De la Fuente, Alexis Caniuqueo Vargas, Alicia M. Alonso‐Martínez, Míkel Izquierdo,
In a randomised controlled trial design, effects of 6 weeks of plyometric training on maximal-intensity exercise and endurance performance were compared in male and female soccer players. Young (age 21.1 ± 2.7 years) players with similar training load and competitive background were assigned to training (women, n = 19; men, n = 21) and control (women, n = 19; men, n = 21) groups. Players were evaluated for lower- and upper-body maximal-intensity exercise, 30 m sprint, change of direction speed and endurance ...
Tópico(s): Cardiovascular and exercise physiology
2015 - Taylor & Francis | Journal of Sports Sciences
Cristián Álvarez, Rodrigo Ramírez‐Campillo, Andrea Vallejos-Rojas, Javiera Jaramillo-Gallardo, Carlos Salas Bravo, Johnattan Cano-Montoya, Carlos Celis‐Morales,
Introducción: obesidad e inactividad física son importantes factores de riesgo para el desarrollo de hipertensión en adultos. No obstante, hay poca evidencia sobre el efecto de estos factores de riesgo en el desarrollo de hipertensión en población infantil. Objetivo: investigar la asociación del estado nutricional, niveles de actividad física y etnicidad con niveles de hipertensión en escolares entre 6 y 13 años de edad. Métodos: un total de 418 escolares de ascendencia étnica europea (n = 311) y mapuche ( ...
Tópico(s): Health and Lifestyle Studies
2016 - Arán Ediciones | Nutrición Hospitalaria
Carlos Salas, Carlos Cristi‐Montero, Yu Fan, Eliana Durán, Ana María Labraña, María Adela Martínez-Sangüinetti, Ana María Leiva, Cristián Álvarez, Nicolás Aguilar-Farías, Rodrigo Ramírez‐Campillo, Ximena Díaz-Martínez, Ruth Sanzana-Inzunza, Carlos Celis‐Morales,
Being physically active modifies the detrimental effect of sedentary behavior on obesity and cardiometabolic markers in adultsBackground: Sedentary behavior is a major risk factor for cardiovascular disease and mortality.Aim: To investigate whether the associations between sedentary behavior and cardiometabolic markers differs across physical activity levels.Materials and Methods: Cross sectional study of 314 participants aged 18 to 65 years.Body mass index (BMI) and waist circumference were measured, ...
Tópico(s): Cardiovascular and exercise physiology
2016 - Q16635223 | Revista médica de Chile
Mauricio Castro‐Sepúlveda, Neil M. Johannsen, Sebastián Astudillo, Carlos Jorquera, Cristián Álvarez, Hermann Zbinden‐Foncea, Rodrigo Ramírez‐Campillo,
Fluid and electrolyte status have a significant impact on physical performance and health. Pre-exercise recommendations cite the possibility of consuming beverages with high amounts of sodium. In this sense, non-alcoholic beer can be considered an effective pre-exercise hydration beverage. This double-blind, randomized study aimed to compare the effect of beer, non-alcoholic beer and water consumption before exercise on fluid and electrolyte homeostasis. Seven male soccer players performed 45 min ...
Tópico(s): Sports Performance and Training
2016 - Multidisciplinary Digital Publishing Institute | Nutrients
Cristián Álvarez, Rodrigo Ramírez‐Campillo, Robinson Ramírez‐Vélez, Míkel Izquierdo,
Our aim was to investigate the effects and prevalence of nonresponders (NR) to high-intensity interval training (HIIT) and resistance training (RT) in women with insulin resistance on cardiometabolic health parameters. Sedentary overweight/obese insulin-resistant women (age = 33.5 ± 6.5 yr; body mass index = 29.9 ± 3.7 kg/m 2 ) were randomly assigned to a triweekly HIIT program (HIIT; n = 18) or resistance training (RT; n = 17). Anthropometry (body mass, fat mass, muscle mass, waist circumference, and skinfold thickness), ...
Tópico(s): Physical Activity and Health
2017 - American Physiological Society | Journal of Applied Physiology