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Search Results: 1 - 10 of 226 matches for " Gourgoulis Vassilios "
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Effects of the Neurodevelopmental Treatment (NDT) on the Mobility of Children with Cerebral Palsy  [PDF]
Thomas Besios, Aggeloussis Nikolaos, Gourgoulis Vassilios, Mauromatis Giorgos, Yannis Tzioumakis, Nikos Comoutos
Open Journal of Therapy and Rehabilitation (OJTR) , 2018, DOI: 10.4236/ojtr.2018.64009
Abstract: The purpose of the present study was to examine the effectiveness of the NDT method (Bobath) in children with CP. Twenty children with cerebral palsy (7 with quadriplegia, 6 with diplegia and 7 with right hemiplegia), with mean age of 4. 85 ± 2. 49 years, took part in the study. Materials-Method: The children participated in an intervention that consisted of an 8-week Bobath program. GMFM-88, PEDI and TUG scores were measured across three time points during the intervention (a baseline measurement, a second at the end of the intervention and a post-intervention measurement one month after the end of the intervention). Results: The results of the NDT intervention showed that the participant children significantly improved their GMFM-88 and TUG scores between initial and final measurement and maintained this one month later (F2,36 = 69,778, p < 0.001), while in PEDI the intervention program had no statistically significant effect (F2,36 = 0.844, p = 0.438). In conclusion, there is strong evidence of the effectiveness of the NDT (Bobath) method in improving the mobility of children regardless of the frequency of its application.
STEP COUNTS AND BODY MASS INDEX AMONG 9-14 YEARS OLD GREEK SCHOOLCHILDREN
Maria Michalopoulou,Vassilios Gourgoulis,Thomas Kourtessis,Antonios Kambas
Journal of Sports Science and Medicine , 2011,
Abstract: The main purpose of this study was the identification of the current pedometer determined physical activity levels of a large sample of 9 -14 years old Greek schoolchildren and the determination of the association between daily step counts and body mass index through the comparison of step counts among overweight, obese and normal-weight children. A total of 532 children (263 boys and 269 girls) were measured for height and weight. Their activity levels were analyzed using pedometers to measure mean steps for 7 consecutive days. Overweight and obese status was determined using the international reference standard (Cole et al., 2000). According to data analysis mean step counts ranged from 15371 to10539 for boys and from 11536 to 7893 for girls. Steps per day were significantly more for boys compared to girls. Children with normal weight performed significantly more steps per day compared to their overweight and obese classmates. Daily step counts reported in this study for 9 -14 year old schoolchildren were relatively low when compared to step counts from other European countries. Only 33.9% of the participants satisfied the body mass index referenced standards for recommended steps per day. Finally, the results of this study provide baseline information on youth pedometer determined physical activity and on youth body mass index levels. High prevalence of low daily step counts and BMI determined obesity was revealed prompting for further exploration of the relationship between objectively measured physical activity and adiposity in particular for children and adolescents that experience both health risk factors.
UNDERWATER STROKE KINEMATICS DURING BREATHING AND BREATH-HOLDING FRONT CRAWL SWIMMING
Nickos Vezos,Vassilios Gourgoulis,Nickos Aggeloussis,Panagiotis Kasimatis
Journal of Sports Science and Medicine , 2007,
Abstract: The aim of the present study was to determine the effects of breathing on the three - dimensional underwater stroke kinematics of front crawl swimming. Ten female competitive freestyle swimmers participated in the study. Each subject swam a number of front crawl trials of 25 m at a constant speed under breathing and breath-holding conditions. The underwater motion of each subject's right arm was filmed using two S-VHS cameras, operating at 60 Hz, which were positioned behind two underwater viewing windows. The spatial coordinates of selected points were calculated using the DLT procedure with 30 control points and after the digital filtering of the raw data with a cut-off frequency of 6 Hz, the hand's linear displacements and velocities were calculated. The results revealed that breathing caused significantly increases in the stroke duration (t9 = 2.764; p < 0.05), the backward hand displacement relative to the water (t9 = 2.471; p<0.05) and the lateral displacement of the hand in the X - axis during the downsweep (t9 = 2.638; p < 0.05). On the contrary, the peak backward hand velocity during the insweep (t9 = 2.368; p < 0.05) and the displacement of the hand during the push phase (t9 = -2.297; p < 0.05) were greatly reduced when breathing was involved. From the above, it was concluded that breathing action in front crawl swimming caused significant modifications in both the basic stroke parameters and the overall motor pattern were, possibly due to body roll during breathing
Effects of the Neurodevelopmental Treatment (NDT-Bobath) in the Mobility of Adults with Neurological Disorders  [PDF]
Thomas Besios, Aggeloussis Nikolaos, Gourgoulis Vassilios, Mauromatis Giorgos
Open Journal of Therapy and Rehabilitation (OJTR) , 2019, DOI: 10.4236/ojtr.2019.73008
Abstract: Background: Bobath method was initially applied in adults and then in children with cerebral palsy. Studies conducted in recent years have shown that the NDT-Bobath method improves function and mobility among persons with Multiple Sclerosis (MS) and Hemiplegia. Purpose: The purpose of the present study was to investigate the effect of NDT-Bobath method in the mobility of patients with neurological disorders (hemiplegia, multiple sclerosis), as evaluated using the TUG, BBS, TMT, and MAS tests. Methods: The study included 20 persons with neurological disorders (11 persons with multiple sclerosis and 9 persons with hemiplegia). The mean age of the participants was 38.7 ± 13.9 years and mean body mass was 65.1 ± 13.1 kg. The participants in the two groups Low Frequency (LF) and High Frequency (HF) followed two different intervention Bobath-NDT programs in terms of frequency. For the statistical analysis a two-way repeated measures analysis of variance (ANOVA) was performed. Results: Bobath-NDT method improves both mobility and functionality of patients with neurological disorders (BBS, p = 0.095 and Tinetti test, p = 0.099) but did not improve spasticity according to the results of MAS scale, p = 0.095. Conclusions: Overall, the results of the present investigation provided considerable evidence suggesting that Bobath-NDT method improves mobility according to the tests (BBS, TMT), but did not improve spasticity according to the results of MAS scale. Therefore, it was concluded that Bobath-NDT method improves both mobility and functionality of patients with neurological disorders. More researches will have to be done in the future.
Comparative Reliability of Berg Balance Scale and MAS Tests in People with Neurological Disorders  [PDF]
Thomas Besios, Aggeloussis Nikolaos, Gourgoulis Vassilios, Mauromatis Giorgos
Neuroscience & Medicine (NM) , 2019, DOI: 10.4236/nm.2019.103017
Abstract: Background: In recent years, many tests have been developed to evaluate the mobility and functional capacity of people with neurological disorders (Hemiplegia, MS). The purpose of this study was to test the reliability and additionally to determine the measurement error of Modified Ashworth Scale and BBS in adults with neurological disorders (hemiplegia, MS). Methods: In the study of tests 20 adults (11 with multiple sclerosis and 9 with hemiplegia) who were retrospectively registered, participated. The average age of adults was 38.7 ± 13.9 years old and their average body mass was 65.1 ± 13.1 kgr. The Greek version of the tests and a Nikon 5300 digital camera for video recording were used for data collection. ICC was calculated, by means of a two-way ANOVA model. Results: The results showed that there were no statistically significant differences between the two independent evaluators and that the BBS (ICC > 0.989) had strong reliability. The reliability of Modified Ashworth Scale has been found to be average: K = 0.502, (p < 0.001). Conclusions: Overall, the results of the present investigation provided considerable evidence suggesting that the test BBS and MAS are reliable and can be used to evaluate kinetic and balance disorders. Therefore, it was concluded that the tests should be applied in order to reliably estimate the mobility and functional ability of adults with neurological disorders. More research shall be carried out in the future on other patients in order to evaluate the reliability of the above tests.
Effect of Exercise on Gait Kinematics and Kinetics in Patients with Chronic Ischaemic Stroke  [PDF]
Styliani Fotiadou, Ioannis Kouroumichakis, Thomas Besios, Nikolaos Papanas, Erasmia Giannakou, Vassilios Gourgoulis, Nikolaos Aggeloussis
Open Journal of Therapy and Rehabilitation (OJTR) , 2019, DOI: 10.4236/ojtr.2019.74010
Abstract: Introduction :?In 2014, American Heart Association and American Stroke Association (AHA/ASA) issued exercise guidelines for stroke patients. Aim of the Study: To study the effects of an exercise programme based on AHA/ ASA guidelines, on gait kinematics and kinetics in patients with chronic ischemic stroke. Materials and Methods: Twelve stroke patients, 67.33 ± 9.14 years old, followed an 8-week exercise programme, with 3 hourly sessions per week, consisting of strength, endurance and flexibility training, as well as neuromuscular activities. Patients’ gait kinematics and kinetics were evaluated before and after the intervention using a 3-dimensional gait analysis system. Results: In most cases, patients in the intervention group showed significant increase or no change in gait kinematics, significant increase in joint moments at the anterior-posterior plane during support phase, and non-signi- ficant change in the frontal and transverse planes kinetics. Conclusions: Exercise prevented further deterioration and/or led to improved walking pattern.
The descriptive set-theoretic complexity of the set of points of continuity of a multi-valued function (Extended Abstract)
Vassilios Gregoriades
Electronic Proceedings in Theoretical Computer Science , 2010, DOI: 10.4204/eptcs.24.13
Abstract: In this article we treat a notion of continuity for a multi-valued function F and we compute the descriptive set-theoretic complexity of the set of all x for which F is continuous at x. We give conditions under which the latter set is either a G_delta set or the countable union of G_delta sets. Also we provide a counterexample which shows that the latter result is optimum under the same conditions. Moreover we prove that those conditions are necessary in order to obtain that the set of points of continuity of F is Borel i.e., we show that if we drop some of the previous conditions then there is a multi-valued function F whose graph is a Borel set and the set of points of continuity of F is not a Borel set. Finally we give some analogue results regarding a stronger notion of continuity for a multi-valued function. This article is motivated by a question of M. Ziegler in "Real Computation with Least Discrete Advice: A Complexity Theory of Nonuniform Computability with Applications to Linear Algebra", (submitted).
New Light on Early Christianity in Nubia: The Martyrium of Saint Athanasios of Clysma
Vassilios CHRISTIDES
Byzantina Symmeikta , 1994,
Abstract: No abstract
Atomism versus Holism in Science and Philosophy
Vassilios Karakostas
Physics , 2009,
Abstract: The pros and cons of various forms of atomism and holism that are applicable both in physical science and today's philosophy of nature are evaluated. To this end, Lewis' thesis of Humean supervenience is presented as an important case study of an atomistic doctrine in philosophical thought. According to the thesis of Humean supervenience, the world is fragmented into local matters of particular fact and everything else supervenes upon them in conjunction with the spatiotemporal relations among them. It is explicitly shown that Lewis' ontological doctrine of Humean supervenience incorporates at its foundation the so-called separability principle of classical physics. In view of the systematic violation of the latter within quantum mechanics, it is argued that contemporary physical science posits non-supervenient relations over and above the spatiotemporal ones. It is demonstrated that the relation of quantum entanglement constitutes the prototypical example of a holistic, irreducible physical relation that does not supervene upon a spatiotemporal arrangement of Humean qualities, undermining, thereby, the thesis of Humean supervenience. It is concluded, in this respect, that the assumption of ontological reductionism, as expressed in Lewis' Humean doctrine, cannot be regarded as a reliable code of the nature of the physical world and its contents. It is proposed instead that - due to the undeniable existence of generic non-supervenient relations - a metaphysic of relations of a moderate kind ought to be acknowledged as an indispensable part of our understanding of the natural world at a fundamental level.
Humean Supervenience in the Light of Contemporary Science
Vassilios Karakostas
Physics , 2009,
Abstract: It is shown that Lewis' ontological doctrine of Humean supervenience incorporates at its foundation the so-called separability principle of classical physics. In view of the systematic violation of the latter within quantum mechanics, the claim that contemporary physical science may posit non-supervenient relations beyond the spatiotemporal ones is reinforced on a foundational basis concerning constraints on the state-representation of physical systems. Depending on the mode of assignment of states to physical systems, unit state vectors versus statistical density operators, we distinguish between strongly and weakly non-Humean, non-supervenient relations. It is demonstrated that in either case the relations of quantum entanglement constitute prototypical examples of irreducible physical relations that do not supervene upon a spatiotemporal arrangement of Humean qualities, weakening, thereby, the thesis of Humean supervenience. It is examined, in this respect, the status of Lewis' recombination principle, whereas his conception of lawhood is critically investigated. It is concluded that the assumption of ontological reductionism, as expressed in Lewis' Humean doctrine, cannot be regarded as a reliable code of the nature of the physical world and its contents. It is proposed instead that, due to the undeniable existence of non-supervenient relations, a metaphysic of relations of a moderate kind ought to be acknowledged as an indispensable part of our understanding of the natural world at a fundamental level.
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