82 research outputs found

    Body Composition, Muscular Strength, Arterial Stiffness, and Hemodynamics Responses to Various Training Protocols in Young Males

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    PURPOSE: The purpose of this study was to compare the effects of 8 weeks performing various resistance training protocols with and without blood flow restriction (BFR) on muscular strength, body composition, arterial elasticity, and hemodynamics responses in young males. RESULTS: Significant time*condition interactions occurred in HR period (p \u3c0.05), HDI SBP (p \u3c0.05), HDI MAP (p \u3c0.05), and SV (p \u3c0.05). Trends for time*condition interactions were found in HDI DBP (p=0.054), HDI HR (p=0.051), and HDI SVR (p=0.085). Significant time main effects occurred in all strength measures (p \u3c0.05). Significant condition main effects occurred in Aortic DBP (p \u3c0.05), Brachial DBP (p \u3c0.05), and LAE (p \u3c0.05). Total lean mass significantly increased from baseline the HI condition only (p\u3c0.05). CONCLUSION: Significant improvements in lean mass were seen following the HI and BFR protocols. However, decreases in LAE were found following the HI protocol only. It appears that performing aerobic exercise after resistance training can negatively affect muscle growth. However, only 15 min of moderate-intensity aerobic training can improve hemodynamics in young, healthy males. Improvements in SBP, DBP, SVR, MAP, HR and SV were seen following the HI+AE protocol

    Correlation Among Hemodynamics and Selected Biochemical Parameters in Hispanic College Students

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    PURPOSE: The purpose of this study was to examine the correlation among large arterial elasticity index (LAEI), small arterial elasticity index (SAEI), mean arterial pressure (MAP), stroke volume (SV), cardiac output (CO), systemic vascular resistance (SVR), total vascular impedance (TVI), pulse pressure (PP), cardiac ejection time (CET), systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting blood glucose (GLU), total cholesterol (TC), high density lipoprotein (HDL) in Hispanic college students. METHODS: Twenty-seven (13 males and 14 females) Hispanic college students (age= 22.00 ± 4.26) volunteered to participate in this study. Each subject visited the exercise physiology lab twice, where the informed consent form was read and signed before any measurement took place. On day 1, each participant completed a medical history questionnaire and demographic data were collected. On the second day, fasting blood samples (at least 8-hr) were collected to measure TC, HDL, and GLU. After lying down in the supine position for 10 minutes, resting LAEI, SAEI, MAP, SV, CO, SVR, TVI, PP, CET, SBP, and DBP were recorded. RESULTS: LAEI or SAEI were not correlated with GLU, TC, or HDL. MAP, DBP, and CO were positively correlated with GLU (r= 0.599, p\u3c 0.01, & r= 0.488, p\u3c 0.05, & r= 0.707, p\u3c 0.01). CO was negatively correlated with HDL (r= -0.564, p\u3c 0.01). No correlation was computed for SVR with GLU or TC or HDL. CONCLUSION: Since increases in DBP and MAP may augment the risk of future cardiovascular problems, GLU may be the key variable to examine in order to predict and/or prevent future cardiovascular events in the Hispanic population. The future studies should investigate the correlation between hemodynamics and selected biochemical parameters of blood in older adults and the elderly to understand the pattern and if aging has an impact on correlations between the variables measured in the study

    Función protectora de las habilidades emocionales en la prevención del consumo de tabaco y alcohol: una propuesta de intervención

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    Tobacco and alcohol use in the Spanish young people is one of the most elevated in Europe. In Spain, the early beginning in these drugs use is especially worrying and it turns into a first magnitude public health problem. In this background, educative and preventive actions directed to youngest groups become essential. It’s necessary to affect the development of projects, plans and campaigns to break the present tendencies of tobacco and alcohol use among young people. This article reviews the studies that have analyzed the relationship among Emotional Intelligence and tobacco and alcohol use. Different works show clearly that emotional abilities are a protective element faced whit the use of these substances. We enhance the great relevance for the development of preventive programs based on Emotional Intelligence Model and we show an intervention proposal to develop in the educative field with children from 7 to 9 years.El consumo de tabaco y alcohol en la población juvenil española es de los más elevados de Europa. El inicio precoz en el consumo de estas drogas en España resulta especialmente preocupante y lo convierte en un problema sociosanitario de primera magnitud. En este contexto, las acciones educativas y preventivas dirigidas a los colectivos más jóvenes se hacen imprescindibles. Es absolutamente necesario incidir en el desarrollo de proyectos, planes y campañas para romper las actuales tendencias de consumo de tabaco y alcohol en la población juvenil. En este artículo revisaremos los estudios que han analizado la relación entre Inteligencia Emocional y consumo de tabaco y alcohol. Distintos trabajos han mostrado claramente que las habilidades emocionales son un elemento protector frente al consumo de este tipo de sustancias. Se resalta la gran relevancia para el desarrollo de programas preventivos basados en el modelo de Inteligencia Emocional y se desarrolla una propuesta de intervención para desarrollar en el ámbito educativo con niños de 7 a 9 años

    Evaluación comparativa de resistencia a la compresión a diferentes niveles de ph de concretos expuestos a carbonatación acelerada usando fenolftaleina en la ciudad Quillabamba-Cusco 2021

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    La presente investigación evaluó comparativamente los resultados de la resistencia a la compresión de testigos de concreto carbonatado fabricados con agua de tres sectores diferentes de la ciudad de Quillabamba (Quillabamba, Ajuajuyoc y Pintobamba), además, tiene como objeto evaluar y comparar los efectos de la resistencia a la compresión de estos testigos de concretos carbonatados que fueron sometidas a una exposición prolongada de dióxido de carbono (CO2) un nivel de concentración del 40000 ppm en una cámara hermética de carbonatación que ha simulado un ambiente totalmente saturado, esto es debido a que la concentración natural de CO2 en el ambiente es tan solo de 400 ppm, además los de testigos de concreto fueron fabricados con diferentes niveles de pH de agua, que se obtuvieron en tres sectores de la ciudad de Quillabamba, con el mismo diseño de mezcla (f´c = 210kg/cm2). Se realizaron 2 ensayos correspondientes a la resistencia a la compresión y a la profundidad de carbonatación con el reactivo químico denominado fenolftaleína todo ello sujeto a tres periodos de exposición del gas a 7, 14 y 28 días posterior a la etapa de curado correspondiente a 28 días. Se concluyó que los resultados de esta evaluación comparativa indicaron que los efectos de la carbonatación en la resistencia a la compresión de los testigos de concreto dependen netamente de la variación de la alcalinidad del concreto y el pH presente en el agua de diseño del concreto, además de la humedad relativa del ambiente de la ciudad de Quillabamba.The present investigation comparatively evaluated the results of the compressive strength of carbonated concrete cores made with water from three different sectors of the city of Quillabamba (Quillabamba, Ajuajuyoc and Pintobamba), in addition, it aims to evaluate and compare the effects of the compressive strength of these carbonated concrete witnesses that were subjected to prolonged exposure to carbon dioxide (CO2) at a concentration level of 40,000 ppm in a hermetic carbonation chamber that has simulated a fully saturated environment, this is because the natural concentration of CO2 in the environment is only 400 ppm, in addition, those of concrete witnesses were manufactured with different levels of water pH, which were obtained in three sectors of the city of Quillabamba, with the same mix design ( f´c = 210kg/cm2). Two tests corresponding to compressive strength and carbonation depth were carried out with the chemical reagent called phenolphthalein, all subject to three periods of gas exposure at 7, 14 and 28 days after the curing stage corresponding to 28 days. It was concluded that the results of this comparative evaluation indicated that the effects of carbonation on the compressive strength of the concrete cores depend clearly on the variation of the alkalinity of the concrete and the pH present in the design water of the concrete, in addition of the relative humidity of the environment of the city of Quillabamba

    Protective function of the emotional abilities for prevention of alcohol consump- tion and smoking: An intervention proposal

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    Tobacco and alcohol use in the Spanish young people is one of the most elevated in Europe. In Spain, the early beginning in these drugs use is especially worrying and it turns into a first magnitude public health problem. In this background, educative and preventive actions directed to youngest groups become essential. It’s necessary to affect the development of projects, plans and campaigns to break the present tendencies of tobacco and alcohol use among young people. This article reviews the studies that have analyzed the relationship among Emotional Intelligence and tobacco and alcohol use. Different works show clearly that emotional abilities are a protective element faced whit the use of these substances. We enhance the great relevance for the development of preventive programs based on Emotional Intelligence Model and we show an intervention proposal to develop in the educative field with children from 7 to 9 years

    Cortisol, Heart Rate, and Perceived Exertion Responses to Different Resistance Training Protocols with and Without Blood Flow Restriction

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    ABSTRACT PURPOSE: The purpose of this study was to examine the effects of different resistance exercise protocols on cortisol, heart rate, and perceived exertion. METHODS: Eight males and eight females (age = 21.8 ± 2.6) performed three randomly assigned exercise protocols on three separate occasions: low-intensity resistance training (RT) exercises with blood flow restriction (BFR) at 20% of one repetition maximum (1-RM) (BFR20), moderate-intensity RT exercises with BFR at 40% of 1-RM (BFR40), and traditional high-intensity RT exercises at 80% of 1-RM (HI80). Participants completed 2-3 circuits of four sets in the leg press and leg extension machines. Total volume of resistance training (RT) exercises performed was about 25% for the BFR20 session and 50% for the BFR40 session compared to the volume of RT exercises for the HI80 session. Heart rate (HR) and rating of perceived exertion (RPE) were monitored throughout each session. Saliva samples were collected before and immediately after each exercise session. Samples were stored at -80 ℃ and later analyzed with ELISA for salivary cortisol concentrations. RESULTS: No significant differences in cortisol concentrations were noted between conditions, but significant increases in cortisol concentrations were seen from pre- to post-exercise exercise (pCONCLUSION: The cortisol findings may indicate that all three exercise protocols resulted in similar levels of stimuli to the hypothalamic-pituitary-adrenal axis. It should be highlighted that the BFR20 session with lowest training volume and intensity resulted in similar objective (i.e., HR) but significantly lower subjective level of exertion (i.e., RPE) compared to the HI80 session with highest training volume and intensity. The cortisol, HR, and RPE responses to various RT sessions indicate that the findings of the present study may have some clinical and/or practical applications

    Boletín NUESTRA AMÉRICA XXI - Desafíos y alternativas, num.9, julio 2017

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    Una excelente iniciativa del Grupo de Trabajo Crisis y economía mundial, coordinado por María Josefina Morales y Gabriela Roffinelli

    ADATools: a set of tools for the analysis of terrain movement maps obtained with SAR Interferometry

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    The SAR Interferometry techniques, Persistent Scatterer Interferometry (PSI) among them, are nowadays known as important tools for monitoring Earth surface movements. Several regional and national Ground Motion Services based on PSI already exist. Moreover, since 2022 the European Ground Motion Service will be operational and will annually provide an updated displacement map over the whole Europe. This will suppose a big amount of ground displacement measurements along the European territory. For each measurement EGMS will provide the annual velocity and the time series of deformation covering the period 2014 to one year prior to each delivery. In this context, it will be more and more necessary having tools to ease the management, analysis, and interpretation, of those wide areas and huge amount of data. We present here a first step in this direction: the ADATools are a set of tools to automatically have secondary, and more operational, products derived from a PSI map. Starting from a fast extraction of the most significant Active Deformation Areas (ADA), with the ADAFinder tool, then we can have a preliminary classification of the most probable phenomena (landslides, subsidence, settlements, or sinkholes) that is behind the detected movement, with the ADAClassifier tool. Moreover, LOS2hv tool allows to derive the horizontal (east-west) and vertical components of the movement in case we have maps of ascending and descending geometries. Finally, it is presented a product that analyzes the local displacement gradients to generate potential damage maps in urban areas. The tools will be presented thorough some results obtained on an area of the Granada County with the use of Sentinel-1 data. All the results have been achieved within the framework of the Riskcoast Project (financed by the Interreg Sudoe Program through the European Regional Development Fund, ERDF).This work was mainly supported by the European Regional Development Fund (ERDF) through the project “RISKCOAST” (SOE3/P4/E0868) of the Interreg SUDOE Programme

    Justo para ti” Campaña Publicitaria para el Seguro Pago por Kilómetros de Rimac 2021

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    En el presente trabajo se explica la campaña publicitaria “Justo para ti” propuesta para Rimac sobre el Seguro Pago por Kilómetros, un seguro vehicular creado en un contexto en el cual los autos son menos utilizados y los hábitos y costumbres de los consumidores han cambiado a raíz de la pandemia en Lima Metropolitana. Por ello, se realiza una investigación exploratoria con metodología cualitativa con el objetivo de identificar por qué los consumidores no consideran relevante la adquisición de seguros vehiculares actualmente. En esta, se identifica que el público objetivo siente que el seguro es justo por diversos motivos frente a sus competidores. A raíz de ello, se crea una campaña que mantiene esa esencia de lo que significa el término “justo” para ellos y demuestra la empatía de la marca frente a estos nuevos estilos de vida mediante un personaje que comprende sus nuevas necesidades. Adicionalmente, se resalta el beneficio principal del producto, que es el precio al cual calificamos también como justo, pues se pretende pagar, únicamente, por los kilómetros consumidos. Esta campaña pretende impulsar la venta del Seguro Pago por Kilómetros tanto en antiguos como en nuevos clientes demostrando que este seguro vehicular se adapta al estilo de vida de sus clientes brindándoles un servicio y precio justos

    Speleoseismology and palaeoseismicity of Benis Cave (Murcia, SE Spain): coseismic effects of the 1999 Mula earthquake (mb 4.8)

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    This work describes the coseismic ceiling block collapse within Benis Cave (−213 m; Murcia, SE Spain), associated with the 1999 Mula earthquake (mb=4.8, MSK VII). The collapse occurred at −156 m into the Earthquake Hall, and as a consequence one small gallery became blind. We studied the geology, topography and active tectonic structures relevant to the cave. In addition, we carried out a seismotectonic analysis of the focal mechanism solutions, and also a fault population analysis on slickensides measured in fault planes in the cave. The stress and strain regime is interpreted as being congruent with the palaeoseismic evidence, and agrees with the fault kinematics established for cave galleries developed within fault planes and growth anomalies of coral flowstone. Our analysis suggests that one active segment (NNE–SSW) determined the morphology and topography of the Benis Cave, where strong to moderate palaeoearthquakes (6≤M≤7) took place. As a consequence of this intense seismic activity a small gallery collapsed. A new palaeoseismic structure, or seismothem, has been recognized, namely the effect of palaeoearthquakes affecting the pattern of development of the spatial coral flowstone distribution located at the bottom of the cave
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