3,649 research outputs found
Heart rate variability and target organ damage in hypertensive patients
No full textBackground:
We evaluated the association between linear standard Heart Rate Variability (HRV) measures and vascular, renal and cardiac target organ damage (TOD).
Methods:
A retrospective analysis was performed including 200 patients registered in the Regione Campania network (aged 62.4 ± 12, male 64%). HRV analysis was performed by 24-h holter ECG. Renal damage was assessed by estimated glomerular filtration rate (eGFR), vascular damage by carotid intima-media thickness (IMT), and cardiac damage by left ventricular mass index.
Results:
Significantly lower values of the ratio of low to high frequency power (LF/HF) were found in the patients with moderate or severe eGFR (p-value < 0.001). Similarly, depressed values of indexes of the overall autonomic modulation on heart were found in patients with plaque compared to those with a normal IMT (p-value <0.05). These associations remained significant after adjustment for other factors known to contribute to the development of target organ damage, such as age. Moreover, depressed LF/HF was found also in patients with left ventricular hypertrophy but this association was not significant after adjustment for other factors.
Conclusions:
Depressed HRV appeared to be associated with vascular and renal TOD, suggesting the involvement of autonomic imbalance in the TOD. However, as the mechanisms by which abnormal autonomic balance may lead to TOD, and, particularly, to renal organ damage are not clearly known, further prospective studies with longitudinal design are needed to determine the association between HRV and the development of TOD
An assessment of the impact of possible CAP reform scenarios on Romanian agriculture
No full textUsing a simplified model, with key-variable the prices of two different possible scenarios of CAP reform after 2013 (moderate and radical), this paper present a comparison between the price effects of implementation of each reform scenario at 2015 horizon on Romanian agriculture. This short analysis shows that, under the presented hypotheses, the net welfare effect, due to the price changes, for the selected products, is positive in both reform scenarios, yet greater in the case of the radical reform. Integrated in the large context of Romanian development, it seems that the influence of CAP reform upon agriculture and rural areas will be most likely a gradual one: an interpenetration between the two scenarios is foreseeable, starting with the moderate reform that will dominate the period around 2013, the reform measures acquiring a more radical character afterwards.CAP reform, Romania, welfare effects, Agricultural and Food Policy,
La Patria Napoletana di Erri De Luca
No full textL’articolo, attraverso l’analisi del racconto La città non rispose (da In alto a sinistra, 1994), mira ad analizzare alcuni aspetti del tema dell’esilio nella poetica di Erri De Luca ed il suo rapporto con la città di Napoli. Tale analisi, in particolare, intende mettere in risalto da un lato le diverse iperdeterminazioni culturali (e innanzitutto letterarie) che agiscono nell’opera di De Luca, e dall’altro ad esaminare schemi e dinamiche strutturali del testo narrativo apparente in relazione ai nuclei significativi ad esso sottesi
La Patria Napoletana di Erri De Luca
No full textL’articolo, attraverso l’analisi del racconto La città non rispose (da In alto a sinistra, 1994), mira ad analizzare alcuni aspetti del tema dell’esilio nella poetica di Erri De Luca ed il suo rapporto con la città di Napoli. Tale analisi, in particolare, intende mettere in risalto da un lato le diverse iperdeterminazioni culturali (e innanzitutto letterarie) che agiscono nell’opera di De Luca, e dall’altro ad esaminare schemi e dinamiche strutturali del testo narrativo apparente in relazione ai nuclei significativi ad esso sottesi
Rich, Sturmian, and trapezoidal words
No full textIn this paper we explore various interconnections between rich words, Sturmian words, and trapezoidal words. Rich words, first introduced by the second and third authors together with J. Justin and S. Widmer, constitute a new class of finite and infinite words characterized by having the maximal number of palindromic factors. Every finite Sturmian word is rich, but not conversely. Trapezoidal words were first introduced by the first author in studying the behavior of the subword complexity of finite Sturmian words. Unfortunately this property does not characterize finite Sturmian words. In this note we show that the only trapezoidal palindromes are Sturmian. More generally we show that Sturmian palindromes can be characterized either in terms of their subword complexity (the trapezoidal property) or in terms of their palindromic complexity. We also obtain a similar characterization of rich palindromes in terms of a relation between palindromic complexity and subword complexity
Fall prediction in hypertensive patients via short-term HRV analysis
No full textFalls are a major problem of later life having severe consequences on quality of life and a significant burden in occidental countries. Many technological solutions have been proposed to assess the risk or to predict falls and the majority is based on accelerometers and gyroscopes. However, very little was done for identifying first time fallers, which are very difficult to recognise. This paper presents a meta-model predicting falls using short term Heart Rate Variability (HRV) analysis acquired at the baseline. 170 hypertensive patients (age: 72 ± 8 years, 56 female) were investigated, of which 34 fell once in the 3 months after the baseline assessment. This study is focused on hypertensive patients, which were considered as convenient pragmatic sample, as they undergo regular outpatient visits, during which short term ECG can be easily recorded without significant increase of healthcare costs. For each subject, 11 consecutive excerpts of 5 minutes each (55 min) were extracted from ECGs recorded between 10:30 and 12:30 and analysed. Linear and nonlinear HRV features were extracted and averaged among the 11 excerpts, which were, then, considered for the statistical and data mining analysis. The best predictive meta-model was based on Multinomial Naïve Bayes, which enabled to predict first-time fallers with sensitivity, specificity and accuracy rates of 72%, 61%, 68% respectively
Analysis of Biomechanical Structure and passing Techniques in Basketball
No full textAbstrct
The job in matter draws some comparative analysis between technique and muscular mechanics of the basketball fundamental of the pass.
In it have been described some data respect to the percentages of use of the varied typologies of passage with the respective incidences of result and error. Besides the technical descriptions are introduced three of the more used and effective pass of basketball as the pass two hands from the breast (2MP), the pass “baseball”, and the pass two hands above the head, this to introduce biomechanical analysis of the more used among them that is the passage two hands from the breast, that is analyzed by the point of view of the muscles that promote it. The purpose is to study either methodic either techniques that didactic as well as methodological fit to the growing up of the same fundamental, in this case a typology of pass, and also the possibility of better eventually taking care of those debit muscular portions that brought to a bad development of the correct executive technique, through exercises more contemplated purpose to thi
Harlequin: Color-driven Generation of Synthetic Data for Referring Expression Comprehension
No full textFatigue: the consequences of a tennis match, determined by 20 Hz GPS
No full textAbstract
The purpose of this study was to analyze the variations in technical-tactical and physical abilities as a result of the fatigue caused by a tennis match. The study was performed on two second-class tennis players (ITA), with a pre-post test protocol. The game was played under the ITF (International Tennis Federation) rules; for a defined total duration of 1 h and 30 min. The pre-post analysis covered the following capabilities: explosive strenght (EF) by Sergeant test, speed (V) was tested by the change of direction test, static equilibrium (SE) was evaluated with the stork test, the accuracy of the strokes (AC) was examined through the Loughborough Tennis Skill East: groundstrokes and finally the joint mobility (JM) was observed with the sit and reach test. The speed test was carried out using 20 Hz GPS (K-Sport Universal, Italy). The use of this instrument in tennis is still very rare; in scientific literature there are few published studies, as opposed to football, and other sports, where there are a considerable number of papers. The use of the GPS and the dedicated K-Fitness software (K-Sport Universal, ITA) allowed an accurate and objective analysis of performance elements, which we consider to be an initial step forward on qualification and quantification on performance parameters in Tennis
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