Search results for "Motor"

Le variazioni di forza applicate da giovani canoisti in funzione delle variazioni dell'angolo di lordosi lombare

2010

INTRODUZIONE E’ stato dimostrato che l’appiattimento dell’angolo di lordosi lombare unitamente a tensioni muscolari statiche sono cause principali di rischio nella degenerazione dei dischi intervertebrali e nell’insorgenza di dolore lombare. Nessuno studio in letteratura ha studiato i canoisti kayaker. In particolare abbiamo chiesto di applicare la tecnica e il movimento utilizzato da canoisti di elevata qualificazione a giovani atleti con un movimento abituale diverso, registrando le forze applicate alla pagaia. SCOPO DEL LAVORO Analisi delle variazioni di forza applicate dai canoisti kayaker alla pagaia in funzione delle variazioni dell’angolo di lordosi lombare. MATERIALI E METODI Abbiam…

Anodal Transcranial Direct Current Stimulation Over Prefrontal Cortex Slows Sequence Learning in Older Adults

2022

Aging is associated with declines in sensorimotor function. Several studies have demonstrated that transcranial direct current stimulation (tDCS), a form of non-invasive brain stimulation, can be combined with training to mitigate age-related cognitive and motor declines. However, in some cases, the application of tDCS disrupts performance and learning. Here, we applied anodal tDCS either over the left prefrontal cortex (PFC), right PFC, supplementary motor complex (SMC), the left M1, or in a sham condition while older adults (n = 63) practiced a Discrete Sequence Production (DSP), an explicit motor sequence, task across 3 days. We hypothesized that stimulation to either the right or left P…

Reaprendizaje motor orientado a la tarea

2022

Este vídeo forma parte de una serie de vídeos que muestran diversas estrategias de intervención fisioterápica en personas con secuelas tras ictus. En él se exponen técnicas basadas en el enfoque de rehabilitación de Reaprendizaje motor orientado a la tarea, descrito por las fisioterapeutas australianas Janet Carr y Roberta Shepherd. Se muestra, a modo de ejemplo, una sesión de intervención para un caso clínico. Se trata de una mujer de 27 años, que a los 24 sufrió un ictus hemorrágico por cavernoma bulboprotuberencial. En la actualidad presenta secuelas de hemiparesia izquierda.

Plasma redox response of Sicilian Opuntia Ficus Indica juice in young physically active women.

2017

It is known amateur female athletes show an altered redox status [1] and the consumption of Opuntia Ficus Indica (OFI) decreases oxidative stress (OS) in healthy humans [2]. Therefore, the aim of this study was to investigate whether the supplementation with Sicilian OFI juice affected plasma redox balance following a maximal effort test in young physically active women
 . This study was randomized, double blind, placebo controlled and crossover design. Eight women (23.25±2.95 years old, weight of 54.13±9.05 kg, height of 157.75±0.66 cm and BMI of 21.69±0.66 kg/m2) were randomly divided into 2 groups and each group was supplied with either 50 ml OFI, diluted to 170 ml with water, or 170 ml …

Active disturbance rejection control of linear induction motor

2017

This paper proposes the theoretical framework and the experimental application of the active disturbance rejection control to linear induction motors. Such a nonlinear control (ADRC) technique can be viewed as a particular kind of input-output linearization control, where the nonlinear transformation of the state is not computed by means of the model, but it is estimated online. Such an approach permits to cope with unmodelling dynamics, as well as uncertainty in the knowledge of the model parameters and exogenous disturbances. The effectiveness of the proposed ADRC control law has been verified both by numerical simulations and experimentally on a suitably developed test setup. Moreover, t…

Fault diagnosis of induction motors broken rotor bars by pattern recognition based on noise cancelation

2014

Current signal monitoring (CSM) can be used as an effective tool for diagnosing broken rotor bars fault in induction motors. In this paper, fault diagnosis and classification based on artificial neural networks (ANNs) is done in two stages. In the first stage, a filter is designed to remove irrelevant fault components (such as noise) of current signals. The coefficients of the filter are obtained by least square (LS) algorithm. Then by extracting suitable time domain features from filter's output, a neural network is trained for fault classification. The output vector of this network is represented in one of four categories that includes healthy mode, a 5 mm crack on a bar, one broken bar, …

The influence of the tecnique of rowing in the management of the rib stress injury in the rowers

2010

Sīkās motorikas attīstīšana 4-5 gadus veciem bērniem, vizuālās mākslas nodarbībās

2019

Kvalifikācijas darbs: Sīkās motorikas attīstīšana 4-5 gadus veciem bērniem, vizuālās mākslas nodarbībās. Darba autore: Nataļja Sudņika Darba vadītāja: Ilze Briška Darba apjoms: 40 lpp., 5 attēli, 7 tabulas, 19 literatūras avoti. Atslēgas vārdi: sīka motorika, zīmēšana, trīs pirkstu satvēriens, roku koordinācija. Pētījuma mērķis: darbs tik izstrādāts lai noskaidrot sīkas motorikas attīstību 4-5 gadus veciem bērniem ar vizuālas mākslas tehnikas paņēmieniem. Teorētiski analizēt un praktiski pārbaudīt ka daudzveidība zīmēšanas tehnikas sekmē sīkas motorikas attīstību 4-5 gadus veciem bērniem. Darbs sastāv no: •psiholoģisko un pedagoģisko literatūru analīzi par šo tēmu; •nosākt sīkas motoriku at…

Predicting the 2000‐m Rowing Ergometer Performance from Anthropometric, Maximal Oxygen Uptake and 60‐s Mean Power Variables in National Level Young R…

2020

Abstract Many studies reported various relationships between 2000-m rowing performance and anthropometric as well as metabolic variables, however, little is known about 60-s mean power in elite youth athletes. The aim of this study was to develop different regression models to predict 2000-m rowing indoor performance time (t2000) using anthropometric variables, maximal oxygen uptake (VO2max) and mean power established during a 60-s all-out test (W60) in national elite youth rowers. Fifteen youth male Italian rowers (age: 15.7 ± 2.0 years; body height: 176.0 ± 8.0 cm; body mass: 71.2 ± 10.0 kg) performed an incremental maximal test, a 60-s all-out test and a 2000-m race simulation using a Co…

Modificazioni posturali indotte dal canottaggio in giovani atleti ben allenati

2005

This research brings evidence that rowing represents a valid sports model for helping both healthy and paramorphic people in changing unhealthy back positions. In particular, this study analyzed the changes induced to the back of twenty well trained athletes. Furthermore, it was taken into consideration a case of an athlete who presented a case of kyphosis and lordosys. This study was carried on for a period of two years during which it was observed that both kyphosis and lordosys had disappeared in the subject observed for this study. The quantitative and qualitative variables taken into account here, demonstrate that the positive results for correcting and self-correcting the position of …