Low-intensity resistance exercise training increases lower limb force in healthy retirees

INTRODUCTION: Aging is associated with decreasing muscle strength. Older people who have never done resistance work in a gym require gradual training programs to help them increasing confidence on this type of training. The use of low intensity resistance exercise with slow movements and tonic force improvement has been proposed as an effective method to increase muscular strength. There is little literature on the effect of intensity training on 30% of one repetition maximum (RM). PURPOSE: To establish the changes in the strength of upper and lower limb force after participating in a 10 week low-intensity resistance exercise for a group of healthy retirees aged between 50 and 70 years. METHODS: Quasi-experimental design, with two measurements. Fifty-eight participants were separated into two groups according to their available schedule. The experimental group received low-intensity resistance training for ten weeks, three times a week, with an intensity of 30 to 60% RM. The control group received no training. Physical tests applied to both groups were: handgrip strength with digital dynamometer, Short Physical Performance Battery (SPPB) and 8-Foot up and go test (FUGT).RESULTS: Forty nine participants completed the study (total dropout rate was 16%) from which 57% were women. Participants in the experimental group (n = 31) had improvements in SPPB and FUGT tests (p \u3c.05). Without changes in handgrip strength. On the other hand, any changes were observed in the control group. CONCLUSION: The results indicate that a low-intensity resistance training (30% 1RM) is a useful method to increase muscle strength of lower limbs in healthy older adults. Due to the interference effect of training, more time is required to observe changes in the dynamic strength of the upper limbs. This type of training program is useful for promoting functionality in older adults reluctant to resistance training

Effects of smoking on vital capacity in healthy students

INTRODUCTION: Although the tobacco consumption has been reported to obstruct the effects of physical culture in young adults, there are few reports that include physical and laboratory evidence of this. Health education appears not to prevent impairment of the vital capacity associated with tobacco consumption. PURPOSE: The purpose of this study was estimate the effect of tobacco consumption on vital capacity after four months of participation in a theoretical-practical program on movement fundamentals.METHODS: Preexperimental design of two measurements. Lung function and a physical test were performed on seventeen healthy students. Course-Navette test was carried out to estimate vital capacity (heart rate at rest, maximum heart rate, physical level, VO2 max, distance and average speed). Forced expiratory volume in one second (FEV1) was measured by Welch Allyn Schiller spirometer. The sample was divided on the consumption of cigarettes (12 consumers vs. 5 abstainers). T-tests were used to evaluate the differences between groups. RESULTS: Participants were men of 20.94 years (SD = 2.69, 18-19 years) with normal body complexion (Body mass index = 24.51 kg/m 2 (SD = 1.69). There were no baseline differences between groups regarding age or body composition (p \u3e .05). Differences in all parameters related to vital capacity were observed in the abstainers group (p \u3c .01), except for maximal heart rate and resting heart rate (p \u3e .05). The smokers group decreased their results in both tests but without significant differences. CONCLUSION: Tobacco consumption affected the vital capacity of young adults despite the participation in theoretical-practical program of fundamentals of the movement. Tobacco abstinence coupled with participation in an educational program increased vital capacity measured with a physical and a laboratory test

Imprints of clustering in multiplicity fluctuations

In this paper, we investigate the multiplicity fluctuations of charged particles observed in high-energy nuclear collisions and relate them to the size of hadronizing systems which happen during such processes. We use the average multiplicities $\langle N\rangle$ and variances $Var\left(N\right)$ of multiplicity distributions of charged particles produced in centrality selected collisions of relativistic heavy-ion nuclei to evaluate the dynamic variable $\Omega$ and study its dependence on the size of colliding nuclei. We connect the observed system-size dependence of multiplicity fluctuations with the clustering phenomena and the finiteness of the hadronizing sources and the thermal bath

Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina

During 1994–96, an experimental longline fishery for tope shark (Galeorhinus galeus) was carried out in the Nuevo Gulf of northern Patagonia and, in the summers of 2000–2001 and 2002, three boats conducted an exploratory commercial fishery for this species, accompanied by a scientific monitoring program. This paper summarizes the results of these fishing trials, and provides information on the biology of tope shark. Catches were highest from February to April, when tope shark represented 36% of the total fish caught, and elephant fish (Callorhynchus callorhynchus) and argentine hake (Merluccius hubbsi) accounted for 33% and 23%, respectively. Tope shark arriving in northern Patagonian waters during the summer are primarily mature males, immature and maturing females in their first and second non-gravid year. No gravid females were caught. These fish are part of the South-western Atlantic stock, which shows signs of over-exploitation, so we suggest that any longline fishery in Patagonia should remain on a small scale. We also recommend that an effective management plan is needed for the whole tope stock, establishing agreements on effort control and co-ordinated research between Brazil, Uruguay and Argentina.Fil: Elias, Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Rodriguez, A. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Hasan, E.. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Reyna, M. V.. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Amoroso, Ricardo Oscar. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentin

Analytic and geometric properties of photoinduced effects in noncentrosymmetric crystals: photovoltaic current and optical rectification

An original dispersion relation between the stationary coherent nonlinear optical responses by current and polarisation is obtained. The dispersion relation provides a new complimentary tool that can be employed to study light-induced charge transport models and facilitate experimental data analysis. It is shown that the origin of the coherent current and the dc-polarisation induced in a noncentrosymmetric crystal under illumination is related to the theory of the Berry phase and can be represented in terms of the renormalised geometric potentials. This renormalisation originates from the extra phase difference acquired by a carrier in the light field on the quantum transition between the electronic bands. The gauge invariance of the corresponding expressions for the current and the polarisation is demonstrated.Comment: 7 page

La Familia con un Miembro Enfermo de Alzheimer

La presente ponencia tiene su origen en una serie de investigaciones de carácter cualitativo que viene realizando el equipo de cátedra de la materia Entrevista Psicológica desde el año 2012 hasta la actualidad. En un primer momento, la propuesta fue indagar sobre las modalidades teórico-técnicas de la primera entrevista psicoterapéutica que implementan los profesionales en los servicios de salud mental de las instituciones polivalentes primero de la ciudad de Córdoba. Posteriormente se extendió a los hospitales polivalentes del interior de la provincia. Objetivos. Actualmente estamos investigando fundamentalmente la modalidad teórico-técnica de la entrevista de admisión que se implementa en los servicios de salud mental, y la propuesta para este trabajo, es extender la investigación hacia las modalidades de admisión en las instituciones con población infantil. Metodología. En este primer avance definiremos qué se entiende por entrevista de Admisión con niños, sus características técnicas y propuestas de abordaje teórico, sus particularidades en el trabajo con niños, el lugar asignado a los padres y el lugar del niño en el dispositivo. Para ello tomaremos en consideración los Hospitales de la Ciudad de Córdoba, haciendo foco en los profesionales de los equipos de salud mental de los mismos, que puedan informarnos acerca de la modalidad de admisión con niños