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EFECTO DE LAS BOTAS DE BOMBERO Y LAS PLANTILLAS VISCOELáSTICAS SOBRE LA FUERZA DE IMPACTO DE LA COMPONENTE VERTICAL DE LA FUERZA DE REACCIóN DEL SUELO
Jesús Cámara-Tobalina
Revista en Ciencias del Movimiento Humano y Salud , 2011,
Abstract: Objetivos: determinar el efecto de las botas de bombero sobre la componente vertical de la fuerza de reacción del suelo (FRS), en el contacto inicial del talón en el suelo o también denominada fuerza de impacto, así como analizar el efecto de las plantillas viscoelásticas implantadas en las botas de bombero sobre esta fuerza durante la marcha. Metodología: Se registró la magnitud de la fuerza de impacto (FZI) de la componente vertical de la FRS, el tiempo hasta la producción de esta fuerza (TZI) y su gradiente de carga (GC); 39 bomberos sin ningún tipo de patología durante los dos a os previos a la toma de registros formaron parte del estudio. Se comparó la marcha en tres condiciones diferentes de calzado: 1) la marcha con botas de bombero, 2) la marcha con botas de bombero a las cuales se les había implantado unas plantillas viscoelásticas y 3) la marcha con calzado deportivo.Resultados: mostraron una mayor producción, así como una mayor magnitud de la fuerza de impacto con botas de bombero respecto a la marcha con calzado deportivo (13,1 vs. 2,6 % de producción de la fuerza de impacto y 61,39 ± 35,18% PC (peso corporal) vs. 49,38 ± 22,99% PC, respectivamente). La marcha con plantillas viscoelásticas implantadas en las botas de bombero no mostró diferencias significativas en ningún parámetro que caracteriza la fuerza de impacto respecto a la marcha sin plantillas. Conclusiones: los resultados de este estudio muestran por un lado, una menor amortiguación de la fuerza de impacto con las botas de bombero en comparación con la marcha con calzado deportivo y por otro, la ineficacia de las plantillas viscoelásticas implantadas en las botas de bombero para la mejora de la amortiguación de la fuerza de impacto durante la marcha a velocidad espontánea.
Reproducibility of the spatio-temporal variables and the ground reaction forces walking with fire fighting boots REPRODUCIBILIDAD DE LAS VARIABLES ESPACIO-TEMPORALES Y DE LAS COMPONENTES DE LA FUERZA DE REACCIóN DEL SUELO EN LA MARCHA CON BOTAS DE BOMBERO [Reproducibility of the spatio-temporal variables and the ground reaction forces walking with fire fighting boo]
Jesús Cámara Tobalina,Raúl Martínez de Santos,Bego?a Gavilanes
E-balonmano.com : Revista de Ciencias del Deporte , 2010,
Abstract: The aim of this study is to analyze the reproducibility of the spatio-temporal variables and the ground reaction forces (GRF) when walking with fire fighting boots in comparison to walking with low calf shoes. Spatio-temporal parameters and the variables related to the three components of the GRF of 39 people were recorded under two different walking conditions. A T-test to contrast the difference between the coefficients of variation (CV) in both conditions was used. The CV of the spatio-temporal variables (i.e velocity (V), condition I = 2.01%; condition II = 1.81%), of the vertical (i.e. contact force (FZA) of the left foot, condition I = 2.54%; condition II = 2.73%) and of the antero-posterior GRF (i.e. maximum force (FXMAX) of the left foot, condition I = 4.47%; condition II = 4.59%) was lower than 12.5%, suggesting that these variables could be used to analyze the influence of fire fighting boots on the gait. However, the low reproducibility showed by medium-lateral parameters does not allow to use them. Apart from the bipodal phase no differences were found between the two walking conditions. Key words: biomechanics, footwear, variability. Resumen El objetivo del presente trabajo es analizar la reproducibilidad de las variables espacio-temporales y de la fuerza de reacción del suelo (FRS) durante la marcha con botas de bombero y compararla con la mostrada durante la marcha con calzado de cuero sin ca a. Se registraron las variables espacio-temporales de 39 personas así como las variables que definen las tres componentes de la FRS con dos tipos de calzado diferente. Se utilizó la prueba T para contrastar la hipótesis referida a la diferencia del coeficiente de variación (CV) entre los dos tipos de calzado. El CV de las variables espacio-temporales (p. ej. velocidad (V), condición I = 2,01%; condición II = 1,81%), así como de las que definen la componente vertical (p. ej. fuerza de apoyo (FZA) del pie izquierdo, condición I = 2,54%; condición II = 2,73%) y antero-posterior (p. ej. fuerza máxima (FXMAX) del pie izquierdo, condición I = 4,47%; condición II = 4,59%) de la FRS fue inferior a 12,5%, sugiriendo que estas variables pueden ser utilizadas para analizar la influencia de las botas de bombero sobre la marcha. La baja reproducibilidad mostrada por las variables que definen la componente medio-lateral desaconseja la utilización de las mismas para evaluar el efecto de las botas de bombero sobre la marcha. A excepción del tiempo de apoyo bipodal, el resto de variables durante la marcha con botas de bombero no mostró una variabilidad diferente a la
La situación laboral del paciente con enfermedad renal crónica en función del tratamiento sustitutivo renal
Julián-Mauro,Juan C.; Molinuevo-Tobalina,Jesús á.; Sánchez-González,Juan C.;
Nefrología (Madrid) , 2012, DOI: 10.3265/Nefrologia.pre2012.Apr.11366
Abstract: background: chronic kidney disease (ckd) is a limiting condition, but studies have shown the benefits of work activity in these patients. the modality of renal replacement therapy (rrt) can influence a patient's capacity for work. objectives: to analyse the occupational situation of people with ckd in relation to the type of rrt administered: haemodialysis (hd), continuous ambulatory peritoneal dialysis (capd), automated peritoneal dialysis (apd) or transplantation (tx). methods: descriptive analysis of the employment of 243 kidney patients of both sexes between 16 and 64 years of age, receiving rrt with hd, capd, apd or tx, from 8 spanish hospitals. results: only 33.3% of working age patients with ckd were employed. statistically significant differences are observed in the percentage of employed men (40.1%) and women (22.9%), between the average age of employed (43.5 years) and unemoloyed (49.6 years) patients, and in the mean time to treatment of employed (4.8 years) versus unemployed (7.9 years). finally there are also differences in the percentage of employed persons in the various forms of tsr considered, being much higher in apd patients (47.8%) than in patients on hd (21.7%) having the lowest percent. conclusions: chronic kidney disease (ckd) and rrt are a major source of disability. active patients opt for treatment largely in the form of apd, such that almost half of patients in this modality are working, while in hd only one of every five patients is working.
Continuity of Cares and Communication interlevels between emergencies mobile teams and Primary Care Attention
SIXTO CáMARA ANGUITA,ANTONIO JESúS VALENZUELA RODRíGUEZ
Páginasenferurg.com , 2008,
Abstract: The gradual incorporation of the nurses to the extrahospital emergency teams give them a holistic aspect in the field of care. And this is not possible without addressing the possibility of continuity of care and communication with other levels of care. All efforts in this regard and made speeches themselves as nursing, "Refer" (Nic 8100)and "Exchange of information on healthcare" (Nic 7960), is the conceptualframework of this work, which objetives are to quantify and exposing the proceedings in this line taken by the nurses of emergency team.
INFLUENCE OF PEDALING TECHNIQUE ON METABOLIC EFFICIENCY IN ELITE CYCLISTS
Jesús Cámara,Sara Maldonado-Martín,Xabier Artetxe-Gezuraga,Natalie Vanicek
Biology of Sport , 2012,
Abstract: Our objective was to investigate the influence of pedaling technique on gross efficiency (GE) at various exercise intensities in twelve elite cyclists ( ·VO2max=75.7 ± 6.2 mL·kg-1·min-1). Each cyclist completed a ·VO2max assessment, skinfold measurements, and an incremental test to determine their lactate threshold (LT) and onset of blood lactate accumulation (OBLA) values. The GE was determined during a three-phase incremental exercise test (below LT, at LT, and at OBLA). We did not find a significant relationship between pedaling technique and GE just below the LT. However, at the LT, there was a significant correlation between GE and mean torque and evenness of torque distribution (r=0.65 and r=0.66, respectively; p < 0.05). At OBLA, as the cadence frequency increased, the GE declined (r=-0.81, p < 0.05). These results suggest that exercise intensity plays an important role in the relationship between pedaling technique and GE.
THE EFFECT OF PATELLAR TAPING ON SOME LANDING CHARACTERISTICS DURING COUNTER MOVEMENT JUMPS IN HEALTHY SUBJECTS
Jesús Cámara,Francisco Díaz,María Soledad Anza,Gaizka Mejuto
Journal of Sports Science and Medicine , 2011,
Abstract: The aim of the present study was to determine the effect of patellar taping (PT) on landing characteristics of the vertical ground reaction force (VGRF) and on flight time during a counter movement jump (CMJ). Eleven healthy male subjects (age: 31.1 ± 4.2 years) volunteered for the study. Each subject performed six CMJs under two different jumping conditions: with PT and without PT (WPT). The order of the two conditions was randomized. All of the measured variables had fair-to-good reliability (intra-class correlation coefficient > 0.75). When we compared the PT and WPT groups, we did not find a significant difference in the magnitude of the first (F1) and second (F2) peaks of the VGRF. We also did not find a significant difference in the time to production of these peaks (T1 and T2), and the time to stabilization (TTS) (p < 0. 05). Furthermore, the flight time was similar in the two groups (0.475 ± 0.046 and 0.474 ± 0.056 s, respectively, for PT and WPT). These results suggest that PT does not jeopardize performance during CMJ. Furthermore, it also does not soften the VGRF generated during the landing, indicating that PT may be of limited utility in preventing injuries associated with this type of movement.
PADDLING PERFORMANCE AND RANKING POSITION IN JUNIOR SURFERS COMPETING AT THE ASSOCIATION OF SURFING PROFESSIONALS: A PILOT STUDY CAPACIDAD DE REMADA Y POSICIóN EN EL RANKING DE SURFISTAS JUNIOR DE LA ASOCIACIóN DE SURFISTAS PROFESIONALES: UN ESTUDIO PILOTO
Jesús Cámara,Sara Maldonado-Martín,Juan Ramón Fernández López,Moises González Goyonaga
E-balonmano.com : Revista de Ciencias del Deporte , 2011,
Abstract: The aims of this pilot study are on one hand, to evaluate the upper body aerobic characteristics of junior surfers competing at the European branch of the Association of Surfing Professionals (ASP) and on the other, to assess the relationship between the junior surfers' upper body aerobic characteristics and their ranking position. Ten surfers competing at the European junior branch of the ASP took part in the study. The maximal oxygen uptake (VO2MAX), the maximum power output (WMAX), the maximum lactate concentration [La]MAX, the maximum heart rate (HRMAX) and the power output at the intensity where the lactate threshold and the onset of blood lactate accumulation are produced (WLT and WOBLA) were determined during an incremental maximal test in a swim bench ergometer. It was observed a lack of a significant relationship between the ranking position and the parameters at maximal intensity (VO2PEAK, WMAX, HRMAX y [La]MAX). The WLT (W · kg-1) and the WOBLA (W · kg-1) were significantly related to ranking position (r= -0.69, p= 0.02; r= -0.72, p= 0.01, respectively). Resumen Los objetivos de este estudio piloto son por un lado, determinar las características aeróbicas de surfistas junior que compiten en la rama Europea de la Asociación de Surfistas Profesionales (ASP) y por otro, analizar la relación de estas características con la posición en el ranking. Diez surfistas tomaron parte en el estudio. Se realizó un test máximo incremental en un ergómetro. Se determinaron el consumo máximo de oxígeno (VO2MAX), la potencia máxima (WMAX), la frecuencia cardiaca máxima (HRMAX), la máxima producción de lactato en sangre ([La]MAX) y la potencia en el umbral de lactato (WLT) y en el inicio de la acumulación de lactato en sangre (WOBLA). No se observó una relación significativa entre la posición en el ranking y los parámetros a intensidad máxima (VO2MAX, WMAX, HRMAX y [La]MAX). La WLT (W · kg-1) y la WOBLA (W · kg-1) mostraron una relación significativa con la posición en el ranking (r= -0.69, p= 0.02; r= -0.72, p= 0.01, respectivamente).
LA CONTRIBUCIóN DEL BIENESTAR SUBJETIVO, LAS EXPECTATIVAS Y LA CRIANZA MATERNAS EN LOS LOGROS ESCOLARES DE SUS NI?OS Y EN LA VALORACIóN DE LA PARTICIPACIóN DE LOS PADRES
SOLíS-CáMARA R.,PEDRO; DíAZ ROMERO,MARYSELA; DEL CARPIO OVANDO,PERLA; ESQUIVEL FLORES,EVA; ACOSTA GONZALEZ,ITZEL; TORRES,ALBA DE JESúS;
Acta Colombiana de Psicología , 2007,
Abstract: the present study examines the contribution of mothers? well-being, parenting expectations, and parenting attitudes (bec) to their children?s school achievement. its aim was to examine if these contributions may help to explain the unclear relationships between parenting involvement and children?s school achievement. a total of 621 mothers and their children from first, second, and third grade participated in the study. in the sample of children, 322 were females and 299 were males. they were divided in five groups of similar size, each group representing a different city of origin in mexico. using cluster analysis, the authors found two groups of mothers with low or high scores on the measures tested. these groups, named low or high bec, showed differences in the distributions of socioeconomic variables. based on that finding, six new groups were formed taking into account such socioeconomic influences. it was found that three factors, family income, mothers? schooling, and bec were related directly to children?s school achievement, but they were poorly related to measures of parenting involvement, with the exception of promotion of reading in children. the findings of this study suggest that other factors rather than the traditional concept of parental involvement have differential effects on children?s academic achievement.
Ketamine anesthesia reduces intestinal ischemia/reperfusion injury in rats
Carlos Rodrigo Cámara, Francisco Javier Guzmán, Ernesto Alexis Barrera, Andrés Jesús Cabello, Armando Garcia, Nancy Esthela Fernández, Eloy Caballero, Jesus Ancer
World Journal of Gastroenterology , 2008,
Abstract: AIM: To investigate the effects of ketamine anesthesia on the motility alterations and tissue injury caused by ischemia/reperfusion in rats.METHODS: Thirty male Wistar rats weighing 200-250 g were used. Ischemia was induced by obstructing blood flow in 25% of the total small intestinal length (ileum) with a vascular clamp for 45 min, after which either 60 min or 24 h of reperfusion was allowed. Rats were either anesthetized with pentobarbital sodium (50 mg/kg) or ketamine (100 mg/kg). Control groups received sham surgery. After 60 min of reperfusion, the intestine was examined for morphological alterations, and after 24 h intestinal basic electrical rhythm (BER) frequency was calculated, and intestinal transit determined in all groups.RESULTS: The intestinal mucosa in rats that were anesthetized with ketamine showed moderate alterations such as epithelial lifting, while ulceration and hemorrhage was observed in rats that received pentobarbital sodium after 60 min of reperfusion. Quantitative analysis of structural damage using the Chiu scale showed significantly less injury in rats that received ketamine than in rats that did not (2.35 ± 1.14 vs 4.58 ± 0.50, P < 0.0001). The distance traveled by a marker, expressed as percentage of total intestinal length, in rats that received pentobarbital sodium was 20% ± 2% in comparison with 25.9% ± 1.64% in rats that received ketamine (P = 0.017). BER was not statistically different between groups.CONCLUSION: Our results show that ketamine anesthesia is associated with diminished intestinal injury and abolishes the intestinal transit delay induced by ischemia/reperfusion.
Concordancia entre los porcentajes de grasa corporal estimados mediante el área adiposa del brazo, el pliegue del tríceps y por impedanciometría brazo-brazo
Martín Moreno,Vicente; Gómez Gandoy,Juan Benito; Antoranz González,María Jesús; Gómez de la Cámara,Agustín;
Revista Espa?ola de Salud Pública , 2003, DOI: 10.1590/S1135-57272003000300005
Abstract: background: assessing nutritional status based on the upper limbs is useful at the clinical level. the aim of this study is to evaluate the agreement degree of the body fat percentages (%bf) estimated by the mid-arm adipose area (%bfarm), the siri triceps skinfold equation (%bftriceps) and the arm-to-arm segmental bioimpedance analysis (%bfbia), as well as the siri four-skinfold equation (%bfsiri), assessing their interchangeability. methods: a cross-sectional study. body fat assessments were made on a total of 145 subjects (83 males, 62 females) anthropometrically and by bioelectrical impedance analysis (omron bf 300ó). the agreement between methods were analyzed using the interclass correlation coefficient (icc) and the bland-altman method. results: the icc between %bfarm and %bftríceps was 0.8322 (ci 95% 0.7672-0.8791); between %bfarm-%bfbia 0.7337 (0.6305-0.8080) and between %bftriceps-%bfbia 0.9290 (0.9015; 0.9488). for the bland-altman method, the agreement interval between %bfarm-%bftríceps (-11.2; 16.96) and between %bfarm-%bfbia (-13.04; 21.76) exceeded the cutoff point (±10%), but not between %bftriceps-%bfbia (-6.64; 9.6), %bfsiri-%bftríceps (-5.27; 4.52) and %bfsiri-%bfbia (-6.31; 8.52). the bmi has no bearing on the results. conclusions: the method utilized influences the nutritional assessment made based on the upper limbs. the mid-arm adipose area method overestimated the %bf with relationship to the siri triceps skinfold or four-skinfold equation and to the bioelectrical impedance analysis, and although this result suggests that mid-arm adipose area may not be a good indicator of global adiposity, this must be confirmed against a gold standard.
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