Francisco Javier Grijota Pérez

Influence of killer strains of Saccharomyces cerevisiae on wine fermentation.

The effect of killer strains of Saccharomyces cerevisiae on the growth of sensitive strains during must fermentation was studied by using a new method to monitor yeast populations. The capability of killer yeast strains to eliminate sensitive strains depends on the initial proportion of killer yeasts, the susceptibility of sensitive strains, and the treatment of the must. In sterile filtered must, an initial proportion of 2-6% of killer yeasts was responsible for protracted fermentation and suppression of isogenic sensitive strains. A more variable initial proportion was needed to get the same effect with non-isogenic strains. The suspended solids that remain in the must after cold-settling decreased killer toxin effect. The addition of bentonite to the must avoided protracted fermentation and the suppression of sensitive strains; however, the addition of yeast dietary nutrients with yeast cell walls did not, although it decreased fermentation lag.

Motivos de género para la práctica de pádel

espanolEl objetivo de este estudio fue detectar los motivos de practica en jugadores regulares de padel. Se accedio a un total de 77 participantes (43 hombres y 34 mujeres) de la Comunidad Autonoma de Extremadura (Espana). Se utilizo la version validada al espanol de la escala de medida de los motivos para la actividad fisica, revisada (MPAM-R). Se realizaron calculos de comparacion de medias a traves del anova de un factor para estudiar las diferencias dentro de cada genero, y la t-Student para conocer las diferencias entre hombres y mujeres. Los resultados revelan diferencias en los motivos de practica dentro del genero femenino en relacion con el rango de edad, tiempo de practica, dias de practica y nivel de juego. Destacan las elevadas puntuaciones otorgadas a la competencia (F = 8.677; R 2adj = 0.48) y al aspecto social (F = 4.253; R 2adj = 0.28) en mujeres de mas de 40 anos, y al fitness/salud en jugadoras con una practica regular de 6 meses a 3 anos (F = 23.553; R 2adj = 0.73). Se observaron tambien diferencias entre hombres y mujeres, siendo relevantes las controversias en los motivos que mueven a practicantes con menos de 6 meses de experiencia. Dichos resultados ofrecen informacion relevante sobre los motivos de practica del padel, siendo de utilidad para el desarrollo de planes de actuacion que potencien la adherencia al deporte, la mejora de la salud y calidad de vida de las personas, evitando el abandono de la practica de actividad fisica y el sedentarismo, especialmente en adultos de mas de 35 anos EnglishThe purpose of this study was to detect the reasons why regular players practice paddle tennis. A total of 77 participants (43 men and 34 women) from the Autonomous Community of Extremadura (Spain) were surveyed. The validated Spanish version of the revised Motives for Physical Activity Measure (MPAM-R) was used. Calculations were performed to compare means through a one-factor ANOVA to study differences within each gender, and the Student t-test was used to ascertain the differences between men and women. The results reveal differences in the reasons for practicing paddle tennis within females in relation to the age range, practice time, days of practice and level of play. What stand out are the high scores given to competition (F = 8.677; R 2 adj = 0.48) and the social aspect (F = 4.253; R 2 adj = 0.28) in women over the age of 40, and to fitness/health in players who have been practicing between 6 months and three years (F = 23.553; R 2 adj = 0.73). Differences were also found between men and women, and the differences in the reasons why practitioners with less than 6 months of experience play are particularly prominent. These results provide relevant information on the reasons why people practice paddle tennis and can be useful when developing action plans that encourage adherence to the sport, improved health and quality of life, preventing the abandonment of physical activity and sedentarism, particularly in adults over the age of 35.

Effect of N3-Poliunsaturated Fatty Acids as Coadjuvant in the Antihypertensive Treatment in Spanish Postmenopausal Women

Objective: The purpose of this study is to evaluate the effects of taking low doses of omega-3 (1,5 g/day) in hypertensive women. Method: Longitudinal clinical trial Health Center of San Fernando de Badajoz. Primary care. 55 postmenopausal hypertensive women. For the study, participants were divided into two groups, group supplementation (GS) (n=28) and one control group (CG) (n=27). Supplementation with n-3 PUFA to the experimental group for 6 months (1.5 g/day). The control group was given nothing. The variables of the study have been blood pressure, n-3 fatty acid supplementation and it was tried to control nutritional intake. Results: In SG, systolic blood pressure decreased significantly at the third (p<0.001) and sixth (p<0.001) month after starting the study, and three months (p<0.01) since the end of supplementation. With regards to diastolic blood pressure levels in the same group, also produced a decrease that became significant (p<0.01) after six months of supplementation and maintained at three months of concluding the supplementation, even without acquire statistically signification. We have shown increases in the plasma percentages of fatty acids C20:5n3 and C22:6n3, after three months of initiating supplementation (p<0.05), after 6 months of it (p<0.001) and in three months of leaving supplementation (p<0.001). Arachidonic acid decreases throughout the supplementation period and this reached a statistically significant difference after 6 months within supplementation. Conclusions: The intake of 1.5 g/day of fish oil as coadjuvant in the treatment of all kinds of arterial hypertension improves blood presure and other cardiovascular diseases.