746 research outputs found
Comercio exterior y mediación lingüística en el sector vitivinícola de Castilla y León
Comercio exterior y mediación lingüística en el sector vitivinícola de Castilla y Leó
Impact of Probiotics on the Performance of Endurance Athletes: A Systematic Review
Background: Probiotic supplements contain different strains of living microorganisms that
promote the health of the host. These dietary supplements are increasingly being used by athletes to
improve different aspects such as athletic performance, upper respiratory tract infections (URTIs),
the immune system, oxidative stress, gastrointestinal (GI) problems, etc. This study aimed to identify
the current evidence on the management of probiotics in endurance athletes and their relationship
with sports performance. Methods: A systematic review of the last five years was carried out in
PubMed, Scopus, Web of science, Sportdiscus and Embase databases. Results: Nine articles met
the quality criteria. Of these, three reported direct benefits on sports performance. The remaining
six articles found improvements in the reduction of oxidative stress, increased immune response
and decreased incidence of URTIs. There is little scientific evidence on the direct relationship
between the administration of probiotics in endurance athletes and sports performance. Conclusions:
Benefits were found that probiotics could indirectly influence sports performance by improving other
parameters such as the immune system, response to URTIs and decreased oxidative stress, as well as
the monitoring of scheduled workouts
Enhanced refrigerant capacity in two-phase nanocrystalline/amorphous NdPrFe17 melt-spun ribbons
"he magnetocaloric properties of NdPrFe17 melt-spun ribbons composed of nanocrystallites surrounded by an intergranular amorphous phase have been studied. The nanocomposite shows two successive second-order magnetic phase transitions (303 and 332 K), thus giving rise to a remarkable broadening (approximate to 84 K) of the full-width at the half-maximum of the magnetic entropy change curve, Delta S-M(T), with a consequent enhancement of the refrigerant capacity RC. For a magnetic field change of 2 T, vertical bar Delta S-M(peak)vertical bar = 2.1 J kg(-1) K-1 and RC = 175 J kg(-1). Therefore, the reversible magnetocaloric response together with the one-step preparation process makes these nanostructured Fe-rich alloy ribbons particularly attractive for room temperature magnetic refrigeration.
WSPH and ISPH Calculations of a Counter-Rotating Vortex Dipole
Viscosity and vorticity are magnitudes playing an important role in many engineering physical phenomena such as: boundary layer separation, transition flows, shear flows, etc., demonstrating the importance of the vortical viscous flows commonly used among the SPH community. The simulation presented here, describes the physics of a pair of counter-rotating vortices in which the strain field felt by each vortex is due to the other one. Different from the evolution of a single isolated vortex, in this case each vortex is subjected to an external stationary strain field generated by the other, making the streamlines deform elliptically. To avoid the boundary influence, a large computational domain has been used ensuring insignificant effect of the boundary conditions on the solution. The performance of the most commonly used viscous models in simulating laminar flows, Takeda’s (TVT), Morris’ (MVT) and Monaghan-Cleary’s (MCGVT) has been discussed comparing their results. These viscous models have been used under two different compressibility hypotheses. Two cases have been numerically analyzed in this presentation. In the first case, a 2D system of two counter-rotating Lamb O seen vortices is considered. At first, the system goes through a rapid relaxation process in which both vortices equilibrate each other. This quasi-steady state is obtained after the relaxation phase is advected at a constant speed and slowly evolves owing to viscous diffusion. The results of the different Lamb-O seen numerical solutions have been validated with good agreement by comparison with the numerical results of a finite element code (ADFC) solution. A second case, somewhat more complex than the previous one, is a 3D Batchelor vortex dipole obtained by adding an axial flow to the system of the first case. The Batchelor vortex model considered here is a classical option normally used to model the structure of trailing vortices in the far-wake of an aircraft
Consumption of over-the-Counter Drugs: Prevalence and Type of Drugs
Recently, there has been an increase in the use of over-the-counter (OTC) drugs. The
consumption of these medicines can be unsafe, as incorrect self-diagnosis or the ingestion of inappropriate
doses can lead to side effects and the occurrence of adverse reactions and drug–drug
interactions. A cross-sectional descriptive observational study was carried out, targeting the entire
Spanish population by using an online questionnaire. The results showed that 78.9% of the subjects
had previously taken or were currently taking OTC drugs. This consumption decreased as the age of
the subjects increased, with a prevalence of 36.4% of subjects aged 71 taking OTC drugs. Analgesics
were the most consumed OTC drugs (49.1%) especially in women, youngsters with non-formal
educational qualifications, and individuals of a low–medium socioeconomic level residing in urban
areas. Measures should be implemented to optimize the safe use of OTC drugs in order to avoid the
occurrence of secondary events associated with the lack of knowledge related to their the usage
Perceived Stress and Increased Food Consumption during the ‘Third Wave’ of the COVID-19 Pandemic in Spain
The COVID-19 pandemic has impacted the mental health of people worldwide. An increase in perceived stress can lead to unhealthy behaviors such as increased food consumption. The aim of this study was to find the level of perceived stress and its relationship with increased food consumption during the "third wave" of the COVID-19 pandemic in Spain. This was a cross-sectional study that employed anonline self-reported frequency of consumption questionnaire and the Perceived Stress Scale-10. A total of 637 subjects participated and 83.6% of respondents had moderate or high stress-more prevalent in the female and young respondents. Moreover, 36.1% of respondents reported that they had increased the frequency of consumption of some foods, mainly nuts, snacks, and jellybeans, along with coffee, tea, cocoa, and soft drinks. Eating between meals was more pronounced in those with high stress (65.1%) than in those with moderate stress (40.4%) and low stress (20.2%). Furthermore, the respondents with high stress reported greater weight gain. Thus, the results show that the level of perceived stress during the 'third wave' of this pandemic increased food consumption
Fracturas de las espinas tibiales en el niño y en el adulto
Presentamos una serie de 29 fracturas de las espinas tibiales en 27 pacientes,
11 niños y 16 adultos. Para su estudio hemos seguido la clasificación de Meyers y McKeever, siendo
las fracturas tipo II las más frecuentes. Se registraron las lesiones asociadas de la rodilla, y la
más frecuente fue la del ligamento lateral interno; encontramos 2 fracturas de Segond en niños.
El tratamiento fue conservador en 7 casos y quirúrgico en los 22 restantes. Para evaluar el resultado
final estudiamos el desplazamiento de la fractura, movilidad y laxitudes residuales de la rodilla
y fuerza muscular. Usamos las escalas de Lysholm y de Tegner para la valoración funcional. Un estudio
radiológico con 3 proyecciones se llevó a cabo en todos los pacientes. El tiempo medio de seguimiento
fue de 9,7 años para el grupo de niños y de 8,2 para los adultos. Los resultados globales,
de acuerdo con la escala de Lysholm, fueron excelentes, pero se registraron 11 laxitudes anteroposteriores
y 4 laterales, aunque 11 de estos 15 pacientes permanecen asintomáticos. Muchas de
estas laxitudes aparecen en fracturas anatómicamente reducidas. Sugerimos que debe realizarse estudio
artroscópico en estos pacientes para detectar lesiones asociadas que empeoran el resultado.A series of 29 fractures of the tibial spine in 27 patients, 11 children and 16
adults. We followed Meyers and McKeever to classify the fractures, tipe II being the most frecuent.
Associated injuries of the knee were registered, being medial collateal ligament the most frecuent.
We found 2 Segond fractures in young patients. The treatment was conservative in 7 cases
and surgical in the remaining 22. To evaluate the final result we studied the displacement of the
fracture, mobility of the knee, anteroposterior and lateral inestabilities, muscle strength. We used
the Lysholm and the Tegner rating systems to evaluate the functional result. A complete radiological
evaluation (three views) was made in all the patients. The average follow-up times was 9.7 years
for the children group, and 8.2 years for the adult group. The overall results according to the Lysholm
rating scale were excellent, but 11 anteroposterior and 4 lateral laxities were registered,
though 11 of the 15 cases remains asymptomatic. Many of theese laxities appeared in anatomically
reduced fractures. We suggest that an arthroscopic study of the patients must be done to detect
associated injuries that produces a worse final result
Reconstrucción ósea acetabular con cotilos no cementados y aporte de aloinjerto en la artroplastia total de cadera : estudio de 35 casos
Se han revisado 35 arlroplastias realizadas en 29 pacientes portadores de algún tipo
de defecto óseo en el cotilo por fallo de prótesis total de cadera. En el presente estudio incluimos
sólo las reconstrucciones acetabulares efectuadas con implantes no cementados. La edad
media fue de 60 años (29/79), siendo 19 mujeres y 10 varones. Clasificamos los defectos óseos siguiendo
a D'Antonio en segmentarios, cavitarios y mixtos, y para la reparación de dichos defectos
utilizamos aloinjerto criopreservado en todos los casos excepto uno, tratado con injerto liofilizado.
Valoramos los resultados desde un punto de vista clínico, subjetivo y objetivo (escala de Harris).
Desde un punto de vista radiológico se analizaron las migraciones del implante acetabular,
la existencia de zonas de radiolucencia, las osificaciones periarticulares y la incorporación o no
del injerto óseo utilizado. Desde el punto de vista clínico obtuvimos un 60% de resultados excelentes
y buenos, frente a un 40% de regulares y malos. Desde cualquier punto de vista el índice
de aflojamiento del componente acetabular fue mucho mayor que el que puede obtenerse con cotilos
no defectuososThirty five revision hip arthroplasties performed in 29 patients with acetabular bone
defects were reviewed. In this series we only include the acetabular reconstruction performed
using non cemented acetabular implants. The mean age of the patients was 60 years (29-79), 19 were
female and 10 male. We classified the acetabular bone defects according to D'Antonio, in segmentary,
cavitary and combined. To repair these defects, we used criopreserved allograft, except
one case in which a liofilized allograft was used. The results were evaluated clinically (modified Harris
hip score) and radiographically, looking for acetabular migrations, radiolucent lines, periarticular
ossifications and bone graft incorporation. We obtained 60% of excellent and good results.
There was 40% of poor and fair results. The acetabular loosening rate was higher than in revision
hip arthroplasty without acetabular bone defects
Artrodesis de rodilla por fracaso de la artroplatsia total
Veintiuna artrodesis de rodilla fueron realizadas en nuestro Servicio en los últimos 20 años. Se realiza un estudio retrospectivo con un seguimiento medio de 10 años. Las razones para la artrodesis fueron en 12 ocasiones (57%) infección de la artroplastia total, y en los 9 casos restantes (43%) aflojamiento aséptico. La artrodesis se realizó mediante fijación externa en un solo plano en 11 casos (52%), en biplano se colocó en 7 (33%), 2 casos con placas a compresión (9,5%) y el caso restante mediante un clavo intramedular (5%). La fusión después del procedimiento inicial se obtuvo solamente en 12 pacientes (57%) y añadiendo procedimientos adicionales totalizamos 19 rodillas fusionadas (90%). Las complicaciones encontradas fueron: 9 pseudoartrosis, 2 infecciones en el trayecto de las fichas, 2 roturas del material de fijación, una infección persistente que llevó a la amputación, y una parálisis del nervio ciático poplíteo externo.A total of 21 knee arthrodesis performed in the last 20 years was reviewed with an average follow-up of 10 years. Arthrodesis was performed following deep infection in 12 cases (57%) and aseptic loosening of the prostheses in the remaining 9 cases. TH artrodesis were performed using one-plane external fixation in 11 cases, two-planes external fixation in 7, compression plates in 2, intramedular nailing in only 12 patients. Using additional procedures we obtained 19 fused knees (90 %). The complications in this series were: Psuedarthrosis (9 cases), infection of the fixator pins (2 cases), infection of the fixator pins (2 cases), and broken osteosybrtesis components (2 cases), severe deep infection with final amputation of the limb (1 case), and CPE injury (1 case)
Resultados a largo plazo de la patelectomía total
Desde el año 1981 hemos realizado 19 patelectomías totales, 9 por artrosis femoropatelar,
8 por dolor anterior de rodilla y 2 por fracturas conminutas. La edad media en el momento
de la intervención era de 48 años (25-80); todos los pacientes con dolor anterior habían sido
operados previamente. Con una evolución media de 7,8 años (3-14), hemos realizado una revisión
clínica y radiológica. Según la escala de la Sociedad Internacional de Rodilla obtuvimos un
58% de resultados excelentes y buenos, resaltando que continúan con dolor todos los pacientes
operados por artrosis y el 50% de los intervenidos por dolor anterior. La patelectomía total es una
técnica cada vez menos utilizada, limitándose sus indicaciones a fracturas muy conminutas, artrosis
femoropatelar en pacientes en los que estaría contraindicada la artroplastia total y en cuadros
de dolor anterior de rodilla rebeldes a otros tratamientosNineteen total patelectomies were performed since 1981. The indication was femoropatellar
osteoarthritis in nine cases, anterior knee pain syndrome in eight, and conminute
fractures in two. The mean age of the group at the time of operation was 48 years (25-80). A1l the
patients with anterior knee pain syndrome had been operated previously. With an average followup
time of 7.8 years (3-14), vve reviewed our patients clinically and radiographically. We used the
International Knee Society rating scale and found 58% of excellent and good results; 100% of the
patients operated because of osteoarthritis and 50% of those operated because an anterior knee
pain syndrome have pain at review. Total patellectomy is not a frequent technique. Today, the sole
indications are very conminute fractures of the patella, femoropatellar osteoarthritis in those patients
in which total knee arthroplasty is not indicated and in the anterior knee pain syndrome
not improved with other treatments
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