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Search Results: 1 - 10 of 11841 matches for " Laura Guidetti "
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Physical exercise intensity prescription to improve health and fitness in overweight and obese subjects: A review of the literature  [PDF]
Gian Pietro Emerenziani, Silvia Migliaccio, Maria Chiara Gallotta, Andrea Lenzi, Carlo Baldari, Laura Guidetti
Health (Health) , 2013, DOI: 10.4236/health.2013.56A2017
Abstract:

Obesity is one of the greatest public health challenges of the 21st century. Overweight and obesity drastically increase a person’s risk of developing chronic non-communicable diseases (NCDs), including cardiovascular disease, cancer and diabetes. Furthermore, obesity is already responsible for 2% -8% of health costs and 10% -13% of deaths in several industrialized countries. Lifestyle modifications involving changes in exercise, diet and psychological support are effective in reducing the incidence of overweight. Moreover, positive effects of physical activity (PA) for weight loss and prevention of weight regain are well documented. It was recognized that health benefits regarding both psychological and physiological aspects, such as improving cardiorespiratory and muscular fitness and/or decreasing depression symptoms, can be obtained from numerous activities. Public health institutions (American College of Sports Medicine, World Health Organization) provide recommendations for PA (volume, frequency, intensity and type of exercise) to achieve positive effects, at all ages and for many diseases and disorders situations. Although exercise under guidelines can be safely performed by obese subjects, several questions still need to be fully answered. In facts, the exercise program should be tailored according to an individual’s habitual physical activity, physical function, health status, exercise responses, and stated goals. Thus, this review analyzes the intensity of PA parameters. In the last years, research has been focused on the individualization of the right intensity in which different types of subjects’ condition must undergo to achieve the health goals. Aerobic exercise has been commonly used to reach weight loss goal. Prescription of aerobic exercise in clinical practice is frequently based on the percentage of maximum heart rate (%HRmax), heart rate reserve (%HRreserve), rating of perceived exertion (RPE), maximal oxygen consumption (%VO2max

POSTURAL CONTROL AFTER A PROLONGED TREADMILL RUN AT INDIVIDUAL VENTILATORY AND ANAEROBIC THRESHOLD
Laura Guidetti,Emanuele Franciosi,Maria Chiara Gallotta,Gian Pietro Emerenziani
Journal of Sports Science and Medicine , 2011,
Abstract: The objective of the study was to verify whether young males' balance was affected by 30min prolonged treadmill running (TR) at individual ventilatory (IVT) and anaerobic (IAT) thresholds in recovery time. The VO2max, IAT and IVT during an incremental TR were determined. Mean displacement amplitude (Acp) and velocity (Vcp) of center of pressure were recorded before (pre) and after (0min post; 5min post; and 10min post) prolonged TR at IAT and IVT, through posturographic trials performed with eyes open (EO) and closed (EC). Significant differences between IVT and IAT for Vcp, between EO and EC for Acp and Vcp, were observed. The IAT induced higher destabilizing effect when postural trials were performed with EC. The IVT intensity produced also a destabilizing effect on postural control immediately after exercise. An impairment of postural control after prolonged treadmill running exercise at IVT and IAT intensity was showed. However, destabilizing effect on postural control disappeared within 10min after IAT intensity and within 5min after IVT intensity
Intercultural education for citizenship in complex societies. Summary of the International Conference on Intercultural Education for citizenship. Educazione interculturale alla cittadinanza nella società complessa. Sintesi dei risultati del Convegno di studi internazionale: Educazione interculturale alla cittadinanza
Barbara Guidetti
Ricerche di Pedagogia e Didattica , 2009,
Abstract: Summary of the International Conference held on 15 and May 16, 2009 in Verona. An event planned at the end of a Research Project of National Interest (PRIN) designed to detect and promote the practices of education for democratic citizenship in Italian schools, following the guidelines of the Council of Europe on Education for Democratic Citizenship (EDC) and using the methodologies proposed in the "Tool for Quality Assurance of EDC in schools". Sintesi dei risultati del Convegno di studi internazionale svoltosi il 15 e il 16 maggio 2009 a Verona. Un evento ideato al termine di un Progetto di Ricerca di Interesse Nazionale (PRIN) finalizzato a rilevare e promuovere le pratiche di educazione alla cittadinanza democratica nelle scuole italiane, seguendo le linee guida del Consiglio d’Europa sull’Education for Democratic Citizenship (EDC) e utilizzando le metodologie proposte nel “Tool for quality assurance of EDC in schools”.
Parabolic problems with general Wentzell boundary conditions and diffusion on the boundary
Davide Guidetti
Mathematics , 2015,
Abstract: We show a result of maximal regularity in spaces of H\"older continuous function, concerning linear parabolic systems, with dynamic or Wentzell boundary conditions, with an elliptic diffusion term on the boundary.
Classical solutions to quasilinear parabolic problems with dynamic boundary conditions
Davide Guidetti
Mathematics , 2015,
Abstract: We study linear nonautonomous parabolic systems with dynamic boundary conditions. Next, we apply these results to show a theorem of local existence and uniqueness of a classical solution to a second order quasilinear system with nonlinear dynamic boundary conditions.
Compara??o das respostas fisiológicas, perceptuais e afetivas durante caminhada em ritmo autosselecionado por mulheres adultas de três diferentes faixas etárias
Buzzachera, Cosme Franklim;Baldari, Carlo;Elsangedy, Hassan Mohamed;Krinski, Kleverton;Santos, Bruno Vinicius;Campos, Wagner de;Guidetti, Laura;Silva, Sergio Gregorio da;
Revista Brasileira de Medicina do Esporte , 2010, DOI: 10.1590/S1517-86922010000500002
Abstract: to compare the physiological, perception and affective responses during treadmill walking at a self-selected pace by previously sedentary women from three age groups. methods: sixty-six healthy women were assigned into three groups according to their age: gi (20.0-25.0 yr, n = 22), gii (30.0-35.0 yr, n = 22) and giii (40.0-45.0 yr, n = 22). each participant performed (i) an initial medical screening, anthropometric assessment and familiarization; (ii) an incremental treadmill test to determine o2max; and (iii) a 20-min treadmill walking bout at a self-selected pace. during the 20-min of treadmill walking at a self-selected pace, the physiological (oxygen uptake, o2 and heart rate, hr) responses were continuously recorded. the perception (borg-rpe for the overall body, 6-20) and affective (feeling scale) responses were measured every 5 min throughout the test. one-way anova was used for statistical analysis (p < 0.05). results: one-way anova demonstrated that there were not significant differences in o2 and hr during a 20-min treadmill walking bout at a self-selected pace among the three age groups. however, the % o2max, % o2lv, %fcmax, and %fclv were significantly higher in giii compared with gi and gii (p < 0.05). finally, the perception and affective responses during a 20-min treadmill walking bout at a self-selected pace were similar among the three age groups. conclusion: these findings demonstrated that the physiological but not the perception and affective responses to treadmill walking at a self-selected pace by sedentary women, did differ according to their age group.
Compara??o das respostas fisiológicas e perceptuais obtidas durante caminhada na esteira em ritmo autosselecionado entre os sexos
Krinski, Kleverton;Elsangedy, Hassan M.;Buzzachera, Cosme F.;Colombo, Heriberto;Alves, Ragami Chaves;Santos, Bruno V.;Krause, Maressa Priscila;Guidetti, Laura;Baldari, Carlo;Dasilva, Sergio G.;
Revista Brasileira de Medicina do Esporte , 2010, DOI: 10.1590/S1517-86922010000400012
Abstract: the aim of this study was to compare physiological and perception responses between genders during treadmill walking at self-selected pace. 17 men and 17 women aged 23.32 ± 3.06 yr were investigated: (i) anthropometric assessment and incremental exhaustion test, (ii) a 20-minute walking bout on treadmill at their self-selected pace. the independent t test was utilized to verify any gender differences, with a level of p < 0.05. the self-selected walking pace was significantly greater in men than women (1.65 ± 0.18 and 1.50 ± 0.12 m·sec-1, respectively), and consequently resulted in higher absolute o2 for men compared to women (21.2 ± 5.5 and 18.3 ± 2.7, respectively). however, both genders self-selected a similar relative exercise intensity %o2max (37.5 ± 10.7 and 40.3 ± 7.2 for men and women, respectively). the subjective perceived exertion (spe) did not differ between genders (10.2 ± 1.0 and 9.8 ± 1.2 for men and women, respectively). the results of the present study demonstrated that regardless of gender, physically active young adults self-selected a similar relative exercise intensity that reflected in similar spe. furthermore, gait at self-selected intensity was insufficient to improve cardiorespiratory fitness in this sample.
Respostas fisiológicas e perceptuais obtidas durante a caminhada em ritmo autosselecionado por mulheres com diferentes índices de massa corporal
Elsangedy, Hassan M.;Krinski, Kleverton;Buzzachera, Cosme F.;Nunes, Renan F. H.;Almeida, Flavia A. M.;Baldari, Carlo;Guidetti, Laura;Campos, Wagner de;Silva, Sergio G. da;
Revista Brasileira de Medicina do Esporte , 2009, DOI: 10.1590/S1517-86922009000500011
Abstract: physiological and perceived responses verified during gait have been widely studied; however, few investigations have tried to compare these responses in groups of different body mass indices during gait in self-selected rhythm. the aim of the present study was to compare the physiological and perceived responses among normative (n), overweighed (ow) and obese (ob) women during gait in self-selected rhythm. sixty-six sedentary women, aged between 20 and 45 years and divided in three groups according to their body mass indices participated in the study: (i) n (18.5 - 24.9kg·m-2, n = 22); (ii) ow (25.0 - 29.9kg·m-2, n = 22) and (iii) ob (> 30.0kg·m-2, n = 22). each participant performed a familiarization session and two experimental sessions (maximal incremental test and 20m-walking test in self-selected rhythm) to determine the physiological (heart rate - hr and oxygen consumption - o2) and perceived responses (perceived exertion - pe) of each session. one-way anova was applied to compare the physiological and perceived responses obtained during gait in self-selected rhythm among the three experimental protocols, applying the tukey's post hoc test with p < 0.05. although the obese subjects have registered lower walking velocity (1.30 ± 0.13m·s-1) compared with the normative and overweighed ones (1.69 ± 0.11 and 1.58 ± 0.22m·s-1, respectively) (p < 0.05), they presented similar physiological response ((58.7 ± 8.6; 63.1 ± 12.6; 64.8 ± 11.1 %o2 and 75.1 ± 7.8; 78.8 ± 8.5; 78.7 ± 7.2 %hrmax, for the normative, overweighed and obese groups, respectively). moreover, the perceived responses did not differ between experimental groups (11.6 ± 1.6; 11.7 ± 1.6; 12.2 ± 1.8, respectively). therefore, it can be concluded that regardless of the bmi, adult women present similar physiological and perceived responses during gait in self-selected rhythm even when walking in different velocities.
On real interpolation, finite differences, and estimates depending on a parameter for discretizations of elliptic boundary value problems
Davide Guidetti,Sergei Piskarev
Abstract and Applied Analysis , 2003, DOI: 10.1155/s1085337503306359
Abstract: We give some results concerning the real-interpolation method andfinite differences. Next, we apply them to estimate theresolvents of finite-difference discretizations of Dirichletboundary value problems for elliptic equations in spacedimensions one and two in analogs of spaces of continuous andHölder continuous functions. Such results were employed tostudy finite-difference discretizations of parabolic equations.
Identification of a convolution kernel in a control problem for the heat equation with a boundary memory term
Cecilia Cavaterra,Davide Guidetti
Mathematics , 2013, DOI: 10.1007/s10231-012-0301-y
Abstract: We consider the evolution of the temperature $u$ in a material with thermal memory characterized by a time-dependent convolution kernel $h$. The material occupies a bounded region $\Omega$ with a feedback device controlling the external temperature located on the boundary $\Gamma$. Assuming both $u$ and $h$ unknown, we formulate an inverse control problem for an integrodifferential equation with a nonlinear and nonlocal boundary condition. Existence and uniqueness results of a solution to the inverse problem are proved.
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