213 research outputs found
Use of chains as a means of intensifying the load in resistance training
No full textWe continually try to develop new training techniques by constantly trying to improve the adaptations of strength and power in vivo. A relatively innovative and interesting method, used as a mechanism to produce variable resistance within the single repetition, concerns the addition of chains to the most common resistance with plates. The logic inherent to the use of chains is that these provide a variable resistance, unlike that provided by the plates alone, which turns out to be of a constant type, thus you could get more benefits in different areas of physical conditioning. After introducing the main biomechanical characteristics associated with this type of resistance material, and having identified a series of solutions on the quantification and standardization of the real resistive load and on the correct setup of the chains, the objective of this review was to highlight and above all to analyze the various deficiencies present in the literature, making sure that the latter could be studied and eliminated through future research. At present, concerning the various components involved in physical conditioning, as a strength, power and rate of force development, a dissimilar result base emerges; while more convincing results emerged for the use of chains in shoulder pain prevention during bench press performance. In conclusion, based on the results of the various investigations to the detriment of the encouraging theories that accompany the use of chains, there is a literature that shows not questionable results, due to multiple variables not yet considered or treated in an approximate way
Metabolic changes in dairy cows at different lactation class during the transition period
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Confronto fra agnelloni 'Pinzirita' e derivati dall'incrocio Bergamascax 'Pinzirita'. II. Caratteristiche mioreologiche.
No full textThe allelochemical trans-cinnamic acid stimulates salicylic acid production and galactose pathway in maize leaves : A potential mechanism of stress tolerance
No full textIn this study, the effects (5 days) of the secondary metabolite trans-cinnamic acid on maize leaves (Zea mays L.), through a physiological and an untargeted metabolomic approach, were evaluated. A reduction in leaf growth and development accompanied by a decrease in protein content was observed in treated seedlings. Besides, trans-cinnamic acid stimulated the photosynthetic machinery with a significant increment in pigment content (chlorophyll a, b and carotenoids), a stimulation of the light adapted PSII efficiency (ɸII) as well as the chlorophyll a fluorescence (YNO), the apparent electron transport rate, and the regulated dissipation of the energy (YNPQ). By contrast, the dark adapted PSII parameter (Fv/Fm) was not affected suggesting that no physical damages to the antenna complex were caused by trans-cinnamic acid. These results suggested that maize seedlings were experiencing a stress but, at the same time, were able to cope with it. This hypothesis was confirmed by both the increment in benzoic and salicylic acids, important molecules involved in stress response, and the metabolomic results, which pointed out that the seedlings are directing their metabolism towards galactose production modulating its pathway, which is pivotal for the production of the antioxidant compound ascorbic acid (ASA). Indeed, in treated plants, a significant increment in total ASA content (28%) was observed. The results suggested that the main strategy adopted by plants to cope with trans-cinnamic-induced stress consisted in the modulation of their metabolism in order to increase the total ASA and carotenoids concentration, radical scavenging species
Neogeography and seismic risk perception. A comparison between two case studies: Calabria, southern italy and malta
No full textGeography of perception aims at clarifying human behaviour by studying the concepts and images of the real world that a person elaborates on by considering the psychological and social aspects of man's behaviour within an environment. In this context, a questionnaire was given to primary and middle school pupils in an area of Calabria (Southern Italy), which has recently been affected by an on-going seismic sequence widely felt by the local population. The same questionnaire was given to students in Malta (Central Mediterranean), an area considered to have a low-to-moderate seismic hazard, and where earthquake awareness is not culturally strong. In this way, the knowledge effectively possessed by the students (relating to age, experience and area of origin) are analysed; their analogous and differing perceptions on earthquakes in different areas are highlighted. The data collected can be used to project and create new informative tools through which students will become "geographic information volunteers" studying natural risks such as earthquakes, and augmenting the territory's level of resilience
Diet implications and oral health status of women in Central Italy
No full textObjective The relationships between oral health habits, dietary practices, and oral health status, as well as general health status, in the population of Italian women, are complex, with many mutual and interrelating factors. The purpose of this study is to investigate oral habits, oral status, and dietary habits of a sample of women in Italy, highlighting the links between nutrition and oral health and discussing how oral health care professionals can integrate nutrition counseling that aimed at improving the oral health of their patients into their practices. Materials and Methods In the period between February 2020 and July 2020, an anonymous questionnaire made up of 20 questions was administered to a randomized sample of 120 Italian women. Results Most of women declare good manual skills in oral hygiene (50%) but just less than half of them brushes their teeth more than three times a day. Statistically significant correlations were found between frequency of dental checkups and dental mobility (p = 0.036), and halitosis (p = 0.006), as well as between frequency of flossing and gum bleeding. Correlation between the type of diet and oral health status showed more halitosis (∼21%), sensitivity (∼26%), and xerostomia (∼53.3%) for vegetarian and vegan women. Conclusion More awareness need to be raised concerning oral hygiene habits, and regarding the importance of regular dental checkups. Brushing at least twice or three times a day needs to be encouraged and the valid support of dental aids has to be in the everyday domestic oral hygiene protocol, as scientific evidence demonstrates. Future clinical studies need to be performed on a more consistent number of vegetarian and vegan patients, to obtain more statistically significant results and support future research that will compare omnivorous, vegetarian, and vegan diets and their influence on oral health status
Demographic, Genealogical and morphological characterization of Pantelleria donkey
No full textA demographic, genetic and morphological evaluation on Pantelleria donkey's population was carried out to give a contribution for the exploitation of this old donkey breed.
Genealogical data were analysed by the software Minbreed v 1.0. Pedigree is composed by 4 generations. The inbreeding of the population (Fwhole population = 0.4 %) resulted very low than the expectations; therefore, the inbreeding coefficients resulted low in the males F male, = 0.9 % and in the females Ffemale = 0.0 %. On the other hand, the mean relationship among the 378 couplings resulted very high a1j = 15,1 %. The morphological study was carried out on 20 subjects. For each animal the most important morphological parameters and bio-metric indices were studied.
Lateral conformation body index, in males was 104.84 vs 97.71 of females, in accordance with the values of dolichomorphic type equides; this tendency to dolichomorphism put in evidence morphological elegance and the high speed of these donkeys. Interesting was also volume index value, used to estimate the skeletal strength
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