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Search Results: 1 - 10 of 1345 matches for " Nikolaos Aggeloussis "
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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.
VALIDITY AND RELIABILITY OF PHYSICAL ACTIVITY MEASURES IN GREEK HIGH SCHOOL AGE CHILDREN
Eugenia C. Argiropoulou,Maria Michalopoulou,Nikolaos Aggeloussis,Andreas Avgerinos
Journal of Sports Science and Medicine , 2004,
Abstract: The aim of this study was to determine the validity and reliability of 3 physical activity questionnaires in Greek high school children. Forty children participated in the study aged M = 13.73 (SD 0.8 years). The validation study was conducted by comparing an accelerometer (MTI/CSA Model 7164) to 3 questionnaires: a) Three-day Physical Activity Record (3DPAR), b) Four by One-Day Recall Physical Activity Questionnaire (4BY1RPAQ) and c) Physical Activity and Life Style Questionnaire (PALQ). Validity of the 3 self-report questionnaires was assessed against the MTI/CSA accelerometer by comparing the scores obtained by each instrument on the first week of measurement. Reliability was assessed with two consecutive measurements performed two weeks apart. The measures of reliability were assessed by Intra Class Correlation, Typical Error and Limits of Agreement. A two-way ANOVA for repeated measures was performed. Repeated measures were week and day; in order to determine differences between the two scores obtained with the two measurements for MTI/CSA, 3DPAR and 4BY1RPAQ. A paired Student's t-test was performed for the two scores obtained with the PALQ. Post-hoc multiple comparisons were performed using the Bonferroni test. Significance for all parts of the analysis was determined at an alpha level of p < 0.05. A paired Student's t-test was performed for the two scores obtained with the PALQ. Results of this study indicated that reliability measured by intra class correlations (ICC) were for MTI/CSA (ICC = 0.52, p < 0.05), 3DPAR (ICC = 0.97, p < 0.01), 4BY1RPAQ (ICC = 0.70, p < 0.01), and PALQ (ICC = 0.52, p < 0.01). Significant Pearson product moment correlation coefficients (r) were observed between MTI/CSA and the other instruments, as a measure of validity: 3DPAR (r = 0.63, p < 0.01), 4BY1RPAQ (r = 0.62, p < 0.01), and PALQ (r = 0.53, p < 0.01). The reliability of the four instruments used in this study was acceptable. Validity correlations were also significant for the three self-report instruments used in this study
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 Mechanics in a Patient with Severe Gait Disorder Due to Chronic Ischaemic Stroke: A Case Study  [PDF]
Stella Fotiadou, Ioannis Kouroumichakis, Thomas Besios, Nikolaos Papanas, Erasmia Giannakou, Vassilis Gourgoulis, Nikolaos Aggeloussis
Neuroscience & Medicine (NM) , 2019, DOI: 10.4236/nm.2019.104023
Abstract: We describe the effects of an exercise programme based on the American Heart Association and American Stroke Association guidelines for stroke patients on gait mechanics in a patient with severe gait disorder due to chronic ischaemic stroke. A 74-year-old female patient, with right hemiparesis as a result of a stroke attack before 18 months followed an 8-week exercise programme, consisting of three hourly sessions per week. Patient’s gait mechanics were evaluated before and after the intervention using a three-dimensional gait analysis system, with six infrared cameras, two force plates, and an electronic timing system. Exercise led to increase of spatial and decrease of temporal gait parameters, increase of joint range of motion and lower limb muscle powers during the entire gait cycle and increase of the moments in the support phase. In conclusion, exercise had a positive effect on this patient’s gait pattern and improved her functionality.
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.
A Computational Comparison of Basis Updating Schemes for the Simplex Algorithm on a CPU-GPU System  [PDF]
Nikolaos Ploskas, Nikolaos Samaras
American Journal of Operations Research (AJOR) , 2013, DOI: 10.4236/ajor.2013.36048
Abstract:

The computation of the basis inverse is the most time-consuming step in simplex type algorithms. This inverse does not have to be computed from scratch at any iteration, but updating schemes can be applied to accelerate this calculation. In this paper, we perform a computational comparison in which the basis inverse is computed with five different updating schemes. Then, we propose a parallel implementation of two updating schemes on a CPU-GPU System using MATLAB and CUDA environment. Finally, a computational study on randomly generated full dense linear programs is preented to establish the practical value of GPU-based implementation.

Letter to the Editor: Postoperative Rhinorrhea without Intraoperative Cerebrospinal Fluid Leak after Endoscopic Transnasal Transphenoidal Surgery for Pituitary Macroadenomas  [PDF]
Nikolaos Gkekas, Panagiotis Primikiris, Nikolaos Georgakoulias
Open Journal of Modern Neurosurgery (OJMN) , 2014, DOI: 10.4236/ojmn.2014.41008
Abstract: Postoperative Rhinorrhea without Intraoperative Cerebrospinal Fluid Leak after Endoscopic Transnasal Transphenoidal Surgery for Pituitary Macroadenomas
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
REPEATABILITY OF ELECTROMYOGRAPHIC WAVEFORMS DURING THE NAERYO CHAGI IN TAEKWONDO
Nickos Aggeloussis,Vassilis Gourgoulis,Maria Sertsou,Erasmia Giannakou
Journal of Sports Science and Medicine , 2007,
Abstract: The purpose of the research was to study the repeatability of electromyographic (EMG) waveforms of major lower limb muscles during the naeryo chagi (axe kick) in taekwondo. Six male and female athletes, aged between 20 and 24 years served as volunteers. All participants were black belt holders and performed the naeryo chagi with their right leg. The electromyographic activity of rectus femoris, biceps femoris, gastrocnemius lateralis and tibialis anterior was recorded during the kick through four preamplified surface electrodes. The participants preformed 10 successive kicks to a fixed target with 1 min inter-trial interval. The electromyograms were recorded during each kick at a sampling frequency of 1000Hz. After the processing of the raw EMG data, myoelectrical activity was normalized on the time and amplitude domain. The coefficient of variation (CV), intra-class correlation coefficient (ICC) and coefficient of multiple correlation (CMC) were computed to test the repeatability of the electromyographic waveforms in each participant. The electromyographic activity during the naeryo chagi demonstrated poor repeatability. More specifically, all CVs were greater than 80%, all CMCs were lower than 0.75 and the majority of the average measure ICCs as well as all single measure ICCs were lower than 0.55. It seemed that only ensemble averages of EMG waveforms obtained from more than ten kicks may be considered as representatives of the muscle function in naeryo chagi and conclusions that have been drawn from a single trial should be reconsidered
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