1,721,137 research outputs found
Righetti, L, NX19555
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/413372Surname: RIGHETTI. Given Name(s) or Initials: L. Military Service Number or Last Known Location: NX19555. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 21962.232082
Item: [2016.0049.45633] "Righetti, L, NX19555
Modelli di prestazione della ginnastica aerobica
Full text linkDefinire in modo sempre più approfondito i modelli di prestazione della ginnastica aerobica è presupposto fondamentale per fornire indicazioni utili per ottimizzarne l’allenamento. Non essendo ancora incluso tra le discipline olimpiche, questo sport tecnico-combinatorio, subisce continue modifiche del Codice dei Punteggi che provocano evoluzioni del modello di prestazione. Partendo da studi precedenti sono state confrontate caratteristiche morfologiche e meccanico-muscolari degli atleti di elite. Sono state effettuate valutazioni posturali globali ed analitiche, è stato valutato l’equilibrio ed alcuni salti tecnici nelle loro espressioni di forza e di controllo. Dieci atleti italiani della squadra nazionale senior di ginnastica aerobica (cinque maschi e cinque femmine) e nove atleti della squadra nazionale junior (tutti di sesso femminile) con sei atleti senior (tre maschi e tre femmine) e due atleti junior (di sesso femminile) utilizzati come campione di controllo, hanno preso parte allo studio. Dopo aver firmato il consenso informato è stato chiesto loro di sottoporsi ad una valutazione posturale globale utilizzando lo Squat Test e ad una valutazione posturale analitica utilizzando il Sit & Reach Test ed altre manovre di allungamento guidato per la flessibilità di alcuni distretti muscolari. L’equilibrio statico e le caratteristiche meccaniche di due salti tecnici sono stati valutati con la Force Platform del Muscle-Lab Bosco System, l’equilibrio dinamico con il Delos Postural System e la forza esplosiva è stata indagata utilizzando lo Squat Jump bipodalico e monopodalico, il Counter Mouvement Jump sia a braccia libere che a braccia bloccate utilizzando la Pedana quattro jump. L’analisi dei dati mostra che le caratteristiche morfologiche così come i valori di forza esplosiva e di riuso di energia elastica degli atleti di elite sono rimasti invariati negli anni. La valutazione posturale globale ha evidenziato problemi di varismo/valgismo, pronazione dei piedi e iperlordosi soprattutto nei gruppi di alto livello. La valutazione posturale analitica ha mostrato un’ottima flessibilità in tutti i gruppi esaminati. Dai test di equilibrio è emerso che gli atleti di alto livello hanno una migliore capacità di recuperare la condizione di stabilità e in particolare i maschi lo fanno utilizzando di preferenza il sistema vestibolare mentre le femmine prediligono il sistema propriocettivo. Gli atleti di alto livello imprimono nei salti tecnici una forza che va dal 60% al 80% della loro forza max mentre il campione di controllo arriva fino al 97% dimostrando che la tecnica e la coordinazione incidono sul costo muscolare. Confrontando i dati di forza esplosiva di questa ricerca con gli studi precedenti viene confermato che i cambiamenti nei regolamenti di questa disciplina sportiva poco incidono sugli aspetti muscolari mentre incidono prevalentemente sugli aspetti metabolici della prestazione.Ever more detailed definitions of aerobic gymnastics performance models are fundamental for providing useful information in order to optimise training programmes. As it not yet an Olympic discipline, this technical-combinatory sport undergoes continuous changes to its Scoring System, causing changes to the performance model. Taking previous studies as a starting point, the morphological and mechanical-muscular properties of elite gymnasts were compared. Global and analytical postural evaluations were carried out, and the testing of equilibrium and some technical jumps, measuring force and control, was performed. Ten Italian gymnasts from the senior aerobic gymnastics national team (five males and five females) and nine gymnasts from the junior national team (all female), with six senior gymnasts (three males and three females) and two junior gymnasts (female) used as a control sample, took part in the study. After signing an informed consent form, gymnasts were asked to undergo a global postural appraisal using the Squat Test and an analytical postural test using the Sit & Reach Test and other guided stretching movements for the flexibility of some muscular districts. Static equilibrium and the mechanical properties of two technical jumps were evaluated using the Muscle-Lab Bosco System Force Platform, dynamic equilibrium was tested with the Delos Postural System and explosiveness was tested using the bipodalic and monopodalic Squat Jump, the Counter Movement Jump with free arms and hands on hips using the quattro jump force plate. The analysis of acquired data shows that morphological properties as well as values for explosiveness and the reuse of elastic energy for elite gymnasts have remained unchanged over the years. The global postural appraisal highlighted the problems of varus/valgus, pronation of the feet and hyperlordosis, especially among elite groups. The analytical postural evaluation showed excellent flexibility in all the groups examined. Equilibrium tests showed that elite gymnasts have a greater capacity to regain stability, in particular males regain stability using more the vestibular system, while females favour the proprioceptor system. Elite gymnasts use a force for technical jumps that ranges from 60 to 80% of their max. force, while the percentage for the control sample was 97%, demonstrating that technique and coordination impact on muscular cost. Comparing data on explosiveness from this research with previous studies, it is confirmed that changes to the rules of this sporting discipline have little bearing on muscular aspects, while they chiefly impact metabolic aspects of performance
From Humans to Robots and Back: Role of Arm Movement in Medio-lateral Balance Control
No full textHuber M, Chiovetto E, Righetti L, Schaal S, Giese MA, Stenard D. From Humans to Robots and Back: Role of Arm Movement in Medio-lateral Balance Control. In: Annual Meeting of Neural Control of Movement. 2015
Primary chemoherms in the Mt. Cervarola Formation (Bologna Apennines): a tool in understanding the evolution of the Northern Apennines during the Miocene.
No full textIn the upper portion of the Mt. Cervarola Formation in the Bologna Apennines, between the Silla and Setta streams, a decametric level made up of marls and mudstones intertongued with numerous carbonate bodies crops out. Based on preliminary biostratigraphic data, the age of these deposits is Langhian. A number of distinctive geometrical, sedimentological and compositional characteristcs allow the carbonate bodies to be interpreted as primary chemoherms, related to methane venting. They consist of micritic, marly calcareous to calcarenitic lenses, strongly brecciated and very rich in densely packed lucinid bivalves. The dimensions vary from a few decimeters to several meters and the thickness ranges from 20-30 cm to 4-5 m. Carbonate lenses are horizontally and vertically scattered and grade into the surrounding pelitic sediments with transitional lithologies in between. The methanogenic carbonates consist of authigenic micrite associated with neoformed pyrite; the micritic groundmass is commonly accompanied by abundant bioclastic debris and scarse fine-grained detritus. Brecciated structures are common, represented by monomictic and polymictic breccias, dense networks of non systematic carbonate-filled veins and fractures, and extensive vuggy fabrics. Other features, such as micritic doughnuts, nodular and cylindrical to encircling concretions and pipe-like structures, are interpreted as fluid-flow conduits. Chaotic structures are rare, consisting of small slumps involving marly and carbonate deposits.The recognition of primary chemoherms in the Mt. Cervarola Formation indicates that synsedimentary mobilization (cannibalism) was frequent not only in slope pelites but also in foredeep deposits. In fact, lucinid-bearing deposits occur in the Mt. Cervarola turbidites in various areas, such as Bobbio and Segavecchia, and in minor basin successions (Porretta, Suviana). They are not chemosynthetic and are reworked, consisting of lucinid clasts occurring at the base of resedimented arenite beds. A minor reworking is evident in the problematic Barigazzo outcrop, made up of limestone blocks with biogenic debris and disarticulated bivalve shells. Lucinid clasts and blocks come from different sources, such as the Mt. Cervarola primary chemoherms, intraformational argillaceous levels including chemoherms but no more preserved, and adjacent slope pelites (Vicchio Marls). The primary chemoherms in the Mt. Cervarola Fm from the Bologna Apennines are remarkably similar to the time-equivalent (Langhian) deposits of the inner Marnoso-arenacea Fm cropping out on the right side of the Sillaro line. In both cases chemosynthetic carbonates are enclosed in argillaceous lithofacies, probably draping over folds and thrust top. They may indicate interruption of normal turbidite deposition and could be used as indicators of tectonic activity, as confirmed by the associated chaotic structures and slumps. These observations are crucial to more accurate paleogeographic reconstructions of foredeep and minor basins (Porretta-Suviana) during the middle Miocene.Finally, the relationships among methane-derived authigenic carbonates, venting of methane rich fluids and tectonic activity are testified by the peculiar position of the Mt. Cervarola primary chemoherms. They are located in proximity of the tectonic contact separating the Mt. Cervarola Fm from the Sestola-Vidiciatico Unit, and are aligned along the overturned limb of an anticline. In this context, the expulsion of fluids was probably induced by tectonic compression and the chemoherms could be considered as syntectonic deposits. This has broad implications for constraining the age and the evolution of the structural setting
Risk Assessment of RYR Food Supplements: Perception vs. Reality
Full text linkThirty-seven red yeast rice (RYR) food supplements were screened for their mycotoxin and natural statin content. Products included pure RYR capsules and multi-ingredient formulations with standardized amounts of monacolin K (MK), marketed both online and retail in the European Union. In terms of mycotoxins, citrinin (CIT) was found in all the monitored products. As CIT content ranged from 100 to 25100 μg/kg, only four products were compliant with maximum EU levels in force until April 2020, while a single product was compliant with the limit of 100 μg/kg introduced after that date. Four contaminated products were labeled as “citrinin free”. In terms of natural statins, nine products had a lower content vs. label statements (from −30 to −83%), while for 24 a larger MK amount (from 10 to 266%) was noticed. Three products had a negligible MK content and only 19 offered a daily dosage exceeding 10 mg as dictated by the health claim granted by EFSA in the EU. No sample had label values compliant with pharmaceutical Good Manufacturing Practices requirements (95–105% content of active constituent). Variable, but small amounts of simvastatin (0.1–7.5 μg per daily dose) were found in 30 samples. These results suggest that limited efficacy and reported safety issues may stem from an under-regulated and undercontrolled market, weakening both effectiveness and risk assessment evaluations
New Analytical Frontiers in Mycotoxin Research
No full textTo deal with the increasing number of mycotoxins to be monitored and restrictions of the European Union about maximum levels, innovative analytical approaches continue to be developed. Appropriate analytical tools for food analysis require fast and reliable screening method as well as highly selective and high-throughput confirmatory methods, both capable of determining low concentrations of these toxins in foodstuff. Over recent years the mycotoxin method development polarized between two approaches on opposite sides of the analytical spectrum. The first has been the development of rapid screening methods for a variety of analytes based on immunochemical techniques, such as ELISA or lateral flow devices. The second is the development of highly sophisticated multianalyte methods based on liquid chromatography coupled with high-resolution mass spectrometry and ion mobility spectrometry for identification and simultaneous quantification of a wide range of contaminants. This chapter reviews the new developments in mycotoxin analysis in food, their advantages, and drawbacks drawing the future research directions in the field
Polyamine content in plant derived food: a comparison between soybean and Jerusalem artichoke
Full text linkThis paper aims to compare the dietary polyamine intake coming from foods derived from two different
plants: soybean (Glycine max L.) well known and universally utilised both fresh and processed, and Jerusalem
artichoke (Helianthus tuberosus L.) tuber, not yet well known and scarcely utilised in the everyday
diet. Free, soluble and insoluble conjugated polyamines were determined in different soy-derived foodstuffs
such as milk, tofu and fermented soy sauce, and in soybeans coming from two different organic
experimental fields (Imola and Altedo, Bologna, Italy). Results show that free polyamines (in particular
putrescine and spermidine) were present in relevant amounts especially in tofu and soy sauce. Conversely,
the Helianthus parenchymatous medulla tissue, which is the only edible part of the tuber, contains
very low levels of polyamines, which are instead preferentially accumulated in the buds. These
data could suggest a preferential utilisation of Helianthus tuber in the diet of people with special needs,
such as patients treated by chemotherapy and patients with diabetes
Whole-body motor strategies for balancing on a beam when changing the number of available degrees of freedom
Full text linkChiovetto E, Huber M, Righetti L, Schaal S, Stenard D, Giese MA. Whole-body motor strategies for balancing on a beam when changing the number of available degrees of freedom. In: Annual meeting of the Progress on Motor Control Society. 2015
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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