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134 results on '"Dritsas, Athanasios"'

7. Combined aerobic/inspiratory muscle training vs. aerobic training in patients with chronic heart failure: The Vent-HeFT trial: a European prospective multicentre randomized trial

Author

Adamopoulos, Stamatis, Schmid, Jean-Paul, Dendale, Paul, Poerschke, Daniel, Hansen, Dominique, Dritsas, Athanasios, Kouloubinis, Alexandros, Alders, Toon, Gkouziouta, Aggeliki, Reyckers, Ilse, Vartela, Vasiliki, Plessas, Nikos, Doulaptsis, Costas, Saner, Hugo, and Laoutaris, Ioannis D.

Published
2014
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14. Deep visual genre-aware descriptors for movie recommendation

Author

Dritsas, Athanasios (author) and Dritsas, Athanasios (author)

Abstract

In the last years, the popularity of video-on-demand services has been constantly increasing, especially for the young audiences who are more adept at using new technologies. Through those platforms, the viewers have access to a huge volume of movies at any moment that makes the viewing decision for most of them a very challenging task. Recommender systems are employed by video-on-demand providers to address the former challenge. We propose a novel movie recommender system that filters movies based on the genre-related visual elements of their trailers. The proposed system utilizes a 3D pre-trained deep ConvNet to extract spatio-temporal deep features from the trailers which then are combined, through a Deep Bag of Segments (DBoS) pooling network, with the genre information of the movie to provide a single movie representation. The 3D deep visual genre-aware representation is exploited by a pure content-based filtering system to provide personalized recommendations to users. We conduct offline experiments with two datasets to evaluate the performance of our approach with respect to accuracy and beyond accuracy metrics. We also conduct an online experiment in a real-world streaming platform to evaluate the user perceived utility of the recommendations produced by a pure content-based recommender system using our proposed genre-aware movie descriptor against the same system using genre and visual 3D deep features. We conclude that a continuous genre representation, which reflects genre specific visual elements of the movie, provides interesting results in the content-based movie recommendation task. Exploring further its potential could bring important benefits to various tasks in the movie domain., Computer Science

Published
2019

21. EXERCISE TRAINING UP-REGULATES PHYSIOLOGICAL GROWTH SIGNALLING IN THE MYOCARDIUM OF PATIENTS WTH MECHANICAL CIRCULATORY SUPPORT: RELEVANCE TO FUNCTIONAL RECOVERY

Author

Adamopoulos, Stamatios, primary, Gouziouta, Aggeliki, additional, Mantzouratou, Polixeni, additional, Kostakou, Erietta, additional, Laoutaris, Ioannis D., additional, Dritsas, Athanasios, additional, Cokkinos, Dennis V., additional, Mourouzis, Iordanis, additional, Sfyrakis, Petros, additional, Iervasi, Giorgio, additional, and Pantos, Constantinos, additional

Published
2013
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26. High plasma adiponectin is related to low functional capacity in patients with chronic heart failure

Author

Laoutaris, Ioannis D., primary, Vasiliadis, Ioannis K., additional, Dritsas, Athanasios, additional, Mavrogeni, Sophie, additional, Kallistratos, Manolis S., additional, Manginas, Athanassios, additional, Chaidaroglou, Antigoni, additional, Degiannis, Dimitrios, additional, Panagiotakos, Demosthenes B., additional, and Cokkinos, Dennis V., additional

Published
2010
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28. Benefits of physical training on exercise capacity, inspiratory muscle function, and quality of life in patients with ventricular assist devices long-term postimplantation

Author

Laoutaris, Ioannis D, primary, Dritsas, Athanasios, additional, Adamopoulos, Stamatis, additional, Manginas, Athanassios, additional, Gouziouta, Aggeliki, additional, Kallistratos, Manolis S, additional, Koulopoulou, Maria, additional, Voudris, Vasilis, additional, Cokkinos, Dennis V, additional, and Sfirakis, Petros, additional

Published
2010
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36. Effects of Inspiratory Muscle Training on Autonomic Activity, Endothelial Vasodilator Function, and N-Terminal Pro-brain Natriuretic Peptide Levels in Chronic Heart Failure

Author

Laoutaris, Ioannis D., primary, Dritsas, Athanasios, additional, Brown, Margaret D., additional, Manginas, Athanassios, additional, Kallistratos, Manolis S., additional, Chaidaroglou, Antigoni, additional, Degiannis, Dimitrios, additional, Alivizatos, Peter A., additional, and Cokkinos, Dennis V., additional

Published
2008
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41. QT interval in cardiac amyloidosis

Author

Parthenakis, Frangiskos I., primary, Vardas, Panos E., additional, Ralidis, Loukianos, additional, Dritsas, Athanasios, additional, and Nihoyannopoulos, Petros, additional

Published
1996
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43. Benefits of physical training on exercise capacity, inspiratory muscle function, and quality of life in patients with ventricular assist devices long-term postimplantation

Author

Laoutaris, Ioannis D, Dritsas, Athanasios, Adamopoulos, Stamatis, Manginas, Athanassios, Gouziouta, Aggeliki, Kallistratos, Manolis S, Koulopoulou, Maria, Voudris, Vasilis, Cokkinos, Dennis V, and Sfirakis, Petros

Abstract

Background:Capacity to exercise may not be fully restored in patients with heart failure even in the long term after ventricular assist device (VAD) implantation. The benefits of exercise training in patients with VAD are unknown.

Published
2011
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44. Explanation of the variance in quality of life and activity capacity of patients with heart failure by laboratory data

Author

Athanasopoulos, Leonidas, Dritsas, Athanasios, Doll, Helen, and Cokkinos, Dennis

Abstract

Background This study was conducted to explain the variance in quality of life (QoL) and activity capacity of patients with congestive heart failure from pathophysiological changes as estimated by laboratory data.Methods Peak oxygen consumption (peak VO2) and ventilation (VE)/carbon dioxide output (VCO2) slope derived from cardiopulmonary exercise testing, plasma N-terminal prohormone of B-type natriuretic peptide (NT-proBNP), and echocardiographic markers [left atrium (LA), left ventricular ejection fraction (LVEF)] were measured in 62 patients with congestive heart failure, who also completed the Minnesota Living with Heart Failure Questionnaire and the Specific Activity Questionnaire. All regression models were adjusted for age and sex.Results On linear regression analysis, peak VO2 with P value less than 0.001, VE/VCO2 slope with P value less than 0.01, LVEF with P value less than 0.001, LA with P = 0.001, and logNT-proBNP with P value less than 0.01 were found to be associated with QoL. On stepwise multiple linear regression, peak VO2 and LVEF continued to be predictive, accounting for 40% of the variability in Minnesota Living with Heart Failure Questionnaire score. On linear regression analysis, peak VO2 with P value less than 0.001, VE/VCO2 slope with P value less than 0.001, LVEF with P value less than 0.05, LA with P value less than 0.001, and logNT-proBNP with P value less than 0.001 were found to be associated with activity capacity. On stepwise multiple linear regression, peak VO2 and LA continued to be predictive, accounting for 53% of the variability in Specific Activity Questionnaire score.Conclusion Peak VO2 is independently associated both with QoL and activity capacity. In addition to peak VO2, LVEF is independently associated with QoL, and LA with activity capacity.

Published
2010
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45. Comparative Value of NYHA Functional Class and QualityofLife Questionnaire Scores in Assessing Heart Failure

Author

Athanasopoulos, Leonidas V., Dritsas, Athanasios, Doll, Helen A., and Cokkinos, Dennis V.

Abstract

To assess the relationships between New York Heart Association (NYHA) functional class, quality of life, aerobic capacity (peak oxygen uptake, O2), ventilatory efficiency (minute ventilation/carbon dioxide production slope, VE/CO2slope), and brain natriuretic peptide (BNP) in creating a model for predicting peak O2.

Published
2010
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46. Effects of Inspiratory Muscle Training on Autonomic Activity Endothelial Vasodilator Function and NTerminal Probrain Natriuretic Peptide Levels in Chronic Heart Failure

Author

Laoutaris, Ioannis D., Dritsas, Athanasios, Brown, Margaret D., Manginas, Athanassios, Kallistratos, Manolis S., Chaidaroglou, Antigoni, Degiannis, Dimitrios, Alivizatos, Peter A., and Cokkinos, Dennis V.

Abstract

To assess the effects of inspiratory muscle training (IMT) on autonomic activity, endothelial function, and N-terminal pro-brain natriuretic peptide (NT-proBNP) levels in patients with chronic heart failure.

Published
2008
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48. Music Interventions as a Complementary Form of Treatment in ICU Patients.

Author

Dritsas, Athanasios

Subjects
*RELAXATION therapy, *CRITICALLY ill, *INTENSIVE care units, *ANXIETY treatment
Abstract

The article explores the role of music to promote relaxation in patients in intensive care units (ICUs). A study by P. Mangoulia and A. Ouzounidou examined the effectiveness of music intervention as a method to reduce anxiety among ICU patients. The researchers noted patient preference as an important factor in choosing music for a therapeutic intervention.

Published
2013

50. Benefits of physical training on exercise capacity, inspiratory muscle function, and quality of life in patients with ventricular assist devices long-term postimplantation.

Author

Laoutaris ID, Dritsas A, Adamopoulos S, Manginas A, Gouziouta A, Kallistratos MS, Koulopoulou M, Voudris V, Cokkinos DV, and Sfirakis P

Subjects
Adult, Bicycling, Breathing Exercises, Exercise Test, Female, Greece, Heart Failure physiopathology, Heart Failure psychology, Humans, Linear Models, Lung physiopathology, Male, Manometry, Middle Aged, Muscle Strength, Oxygen Consumption, Physical Endurance, Recovery of Function, Spirometry, Surveys and Questionnaires, Time Factors, Treatment Outcome, Ventricular Function, Left, Ventricular Function, Right, Walking, Young Adult, Exercise Therapy, Exercise Tolerance, Heart Failure therapy, Heart-Assist Devices, Inhalation, Quality of Life, Respiratory Muscles physiopathology
Abstract

Background: Capacity to exercise may not be fully restored in patients with heart failure even in the long term after ventricular assist device (VAD) implantation. The benefits of exercise training in patients with VAD are unknown., Design and Methods: Fifteen patients, aged 38.3 ± 15.9 years, bridged to heart transplantation with left ventricular assist device or biventricular assist device were randomized at a ratio of 2 : 1 to a training group (TG, n = 10) or a control group (n = 5), 6.3 ± 4 months after implantation. Both the groups were advised to walk 30–45 min/day. TG also underwent moderate-intensity aerobic exercise using a bike or treadmill for 45 min, three to five times a week, combined with high-intensity inspiratory muscle training using a computer-designed software to respiratory exhaustion, two to three times a week for 10 weeks. The patients were tested using cardiopulmonary exercise testing, 6-min walk test, spirometry and electronic pressure manometer for inspiratory muscle strength (Pimax) and endurance (sustained Pimax) measurement. Quality of life was assessed with the Minnesota Living with Heart Failure questionnaire., Results: TG improved peak oxygen consumption (19.3 ± 4.5 vs. 16.8 ± 3.7 ml/kg per min, P = 0.008) and VO2 at ventilatory threshold (15.1 ± 4.2 vs. 12 ± 5.6 ml/kg per min, P = 0.01), whereas the ventilation/carbon dioxide slope decreased (35.9 ± 5.6 vs. 40 ± 6.5, P = 0.009). The 6-min walk test distance increased (527 ± 76 vs. 462 ± 88 m, P = 0.005) and quality of life was improved (38.2 ± 11.6 vs. 48.9 ± 12.8, P = 0.005), as well as Pimax (131.8 ± 33 vs. 95.5 ± 28cmH2O, P = 0.005), sustained Pimax (484 ± 195 vs. 340 ± 193cmH2O/s/103, P = 0.005), and inspiratory lung capacity (2.4 ± 0.9 vs. 1.7 ± 0.7 L, P = 0.008) were improved. No significant changes were noted in the control group., Conclusion: Our findings indicate that exercise training may improve the functional status of VAD recipients even at a later period after implantation and thus, may have additional importance in cases of destination therapy.

Published
2011
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