Juan José González Henríquez

Juan José González Henríquez
Universidad de Las Palmas de Gran Canaria | ULPGC · Department of Mathematics

About

44
Publications
17,727
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988
Citations
Citations since 2017
17 Research Items
586 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
Additional affiliations
November 1992 - present
Universidad de Las Palmas de Gran Canaria
Position
  • Professor (Full)

Publications

Publications (44)
Article
Full-text available
There is little information about the trend of the gender gap in chronic morbidities and whether the trend of expansion occurs equally in the age and gender groups. The objectives were to examine the consistency and stability of the gender gap in the main self-reported chronic morbidities in the general population, and, likewise, to analyze the tre...
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The NF-κB signalling pathway plays a critical role in inflammation, immunity, cell proliferation, apoptosis, and muscle metabolism. NF-κB is activated by extracellular signals and intracellular changes in Ca²⁺, Pi, H⁺, metabolites and reactive oxygen and nitrogen species (RONS). However, it remains unknown how NF-κB signalling is activated during e...
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The study aimed to determine the levels of skeletal muscle Angiotensin‐Converting Enzyme 2 (ACE2, the SARS‐CoV‐2 receptor) protein expression in men and women and assess whether ACE2 expression in skeletal muscle is associated with cardiorespiratory fitness and adiposity. The level of ACE2 in vastus lateralis muscle biopsies collected in previous s...
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The purpose of this investigation was to determine whether differences in body composition, pharmacological treatment and physical activity explain the increased resting metabolic rate (RMR) and impaired insulin sensitivity in hypertension. Resting blood pressure, RMR (indirect calorimetry), body composition (dual‐energy X‐ray absorptiometry), phys...
Article
This study explores the use of digital videos in education, from the perspective of the teacher as an agent of technological integration. Secondary and university teachers were surveyed in a region-wide case study. Three topics were specifically surveyed: common uses of digital video in teaching, instructor self-production of educational videos, an...
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This study aimed to determine whether the measured resting energy expenditure (REE) in overweight and obese patients living in a temperate climate is lower than the predicted REE; and to ascertain which equation should be used in patients living in a temperate climate. REE (indirect calorimetry) and body composition (DXA) were measured in 174 patie...
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Background: No consensus exists on how to average data to optimise V̇O2max assessment. Although the V̇O2max value is reduced with larger averaging blocks, no mathematical procedure is available to account for the effect of the length of the averaging block on V̇O2max. . Aims: To determine the effect that the number of breaths or seconds included...
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Background: Little is known about the impact of long term participation in sports and subcutaneous fat volume in children. This study aimed at determining whether tennis participation is associated with lower subcutaneous adipose tissue volume (SATv) in the abdominal and upper extremities in children. Methods: Magnetic resonance imaging (MRI) was u...
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The main aims of this study were to determine the accuracy of the portable metabolic cart K5 by comparison with a stationary metabolic cart (Vyntus CPX), to check on the validity of Vyntus CPX using a butane combustion test, and to assess the reliability of K5 during prolonged walks in the field. For validation, measurements were consecutively perf...
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Aims: This study evaluates both concordance among those measurements obtained by three different pulse oximeters currently used by nursing professionals in hospital units and the factors which can influence this concordance. Background: Many models of wireless pulse oximeters in the present market do not offer possibility of calibration and, the...
Article
It is generally accepted that preadolescents have a limited capacity to develop muscle hypertrophy in response to exercise compared with older populations; however, studies are scarce and conflicting. The main aim of the present study was to assess if playing tennis is associated with the hypertrophy of dominant pectoralis muscles (PM) in professio...
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Background: Shorter CAG and GGN androgen receptor (AR) repeat polymorphisms are associated with stronger androgen signaling, and therefore, could influence lean mass and exercise performance during growth. Methods: Physical fitness and body composition were measured by standardized procedures and the length of CAG and GGN repeats was determined...
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Negative arterial to end-tidal pco2 differences ((a-ET)pco2) have been reported in normoxia. To determine the influence of blood temperature on (a-ET)pco2, 11 volunteers (21 ± 2 years) performed incremental exercise to exhaustion in normoxia (Nx, Pio2: 143 mmHg) and hypoxia (Hyp, Pio2: 73 mmHg), while arterial blood gases and temperature (ABT) were...
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INTRODUCTION the human androgen receptor (AR) gene possesses two trinucleotide polymorphic repeats, (CAG and GGN) that affect the amount of AR protein translated. In this study, we genotyped these polymorphic tracts in a representative sample of Caucasian children (Tanner ≤ 5), 152 boys (11.5 } 2.6 yrs) and 116 girls (10.1 } 3.2 yrs) from Spain a...
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End-tidal PCO2 (PET CO2 ) has been used to estimate arterial pressure CO2 (Pa CO2 ). However, the influence of blood temperature on the Pa CO2 has not been taken into account. Moreover, there is no equation validated to predict Pa CO2 during exercise in severe acute hypoxia. To develop a new equation to predict temperature-corrected Pa CO2 values d...
Article
To test the intra-individual reliability in response to anodal transcranial direct current stimulation (AtDCS). 45 healthy subjects received AtDCS (1mA, 13min) in two separate sessions, 6-12months apart. Motor evoked potentials were collected at baseline and then at 5-min intervals after AtDCS for 1h. Short intracortical inhibition (SICI) was asses...
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Introduction: The aim is to examine the differences between participation at low and zero moderate to vigorous physical activity (MVPA) in relation to their trends and associations with known socio-demographic and health factors. We hypothesised that the number of people at zero MVPA level could be rising despite a parallel increase in the populat...
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Background: The aim was to develop a unipedal stance test for the assessment of balance using a force platform. Methods: A single-leg balance test was conducted in 23 students (mean ± SD) age: 23 ± 3 years) in a standard position limiting the movement of the arms and non-supporting leg. Six attempts, with both the jumping (JL) and the contralate...
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Lack of physical activity (PA) is a major risk for chronic disease and obesity. The main aims of the present study were to identify individual and environmental factors independently associated with PA and examine the relative contribution of these factors to PA level in Spanish adults. A population-based cross-sectional sample of 3,000 adults (18-...
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Excessive time in front of a single or several screens could explain a displacement of physical activity. The present study aimed at determining whether screen-time is associated with a reduced level of moderate to vigorous physical activity (MVPA) in Spanish adolescents living in favorable environmental conditions. A multi-stage stratified random...
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El estudio realizado pretende analizar el biotipo de la gimnasta de rítmica, relacionar su rendimiento de competición con algunos valores de la condición física y valores antropométricos. La comparativa se ha realizado mediante la técnica de árboles de clasificación, significando la pertenencia de club, el pliegue suprailíaco, el pliegue del muslo...
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The performance of two substrates commonly available in the zone, gravel and lapilli, was tested for their use in hybrid constructed wetland pilot plants for the treatment and reuse of urban wastewater in Gran Canaria, Canary Islands, Spain. The first stage of the systems was a vertical subsurface-flow constructed wetland and the second stage was a...
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The purpose of this research has been to translate into Spanish and analyze the psychometric properties of Anderson and Cychosz’s measuring scale of the identification with physical exercise (EIS) (1994) in a sample of 316 university students. The confirmatory factor analysis stated that the model that best adjusts to the data both in the total sam...
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The purpose of this research has been to translate into Spanish and analyze the psychometric properties of Anderson and Cychosz's measuring scale of the identification with physical exercise (EIS) (1994) in a sample of 316 university students. The confirmatory factor analysis stated that the model that best adjusts to the data both in the total sam...
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La natació, com ja és sabut, és un dels esports més recomanats a hores d�ara, per la qual cosa en resulta molt interessant l�estudi i la comprensió dels diferents aspectes que el caracteritzen, amb particular referència a determinats intervals d�edat. Aquest treball té com a objectiu el coneixement de les diferències que es produeixen entre l�ensen...
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The aim of this study was to determine if gender differences in muscle mass explain the gender differences in running and cycling sprint performance. Body composition (dual-energy X-ray absorptiometry), and running (30 and 300 m test) and cycling (Wingate test) sprint performance were assessed in 123 men and 32 women. Peak power (PP) output in the...
Article
This study evaluates the effect of physical activity on the bone content (BMC) and density (BMD) in 51 girls (14.2+/-0.4 yr). Twenty-four were placed in the handball group as they have been playing handball for at least 1 year (3.9+/-0.4). The other 27 who did not perform in any kind of regular physical activity other than that programmed during th...
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En: Suma Zaragoza 1998, n. 27, febrero ; p. 97-102 Desde hace años los profesores de física, química o botánica han dispuesto de laboratorios donde los alumnos experimenten los conceptos teóricos, expuestos previamente en clase. En este artículo se pone de manifiesto la facilidad y potencia de Mathematica como laboratorio de matemáticas para experi...

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