| Airways obstruction, chronic expectoration, and rapid decline of FEV1 in smokers are associated with increased levels of sputum neutrophils. D Stănescu, A Sanna, C Veriter, S Kostianev, PG Calcagni, LM Fabbri, ... Thorax 51 (3), 267-271, 1996 | 645 | 1996 |
| Ventilatory efficiency and rate of perceived exertion in obese and non‐obese children performing standardized exercise B Marinov, S Kostianev, T Turnovska Clinical physiology and functional imaging 22 (4), 254-260, 2002 | 142 | 2002 |
| Heart rate variability as a method for assessment of the autonomic nervous system and the adaptations to different physiological and pathological conditions ZZ Taralov, KV Terziyski, SS Kostianev Folia medica 57 (3/4), 173, 2015 | 87 | 2015 |
| Altered resting state effective connectivity of anterior insula in depression S Kandilarova, D Stoyanov, S Kostianev, K Specht Frontiers in psychiatry 9, 365603, 2018 | 82 | 2018 |
| Exercise performance and oxygen uptake efficiency slope in obese children performing standardized exercise. B Marinov, S Kostianev Acta physiologica et pharmacologica Bulgarica 27 (2-3), 59-64, 2003 | 74 | 2003 |
| Oxygen-uptake efficiency slope in healthy 7-to 18-year-old children B Marinov, S Mandadzhieva, S Kostianev Pediatric exercise science 19 (2), 159-170, 2007 | 60 | 2007 |
| Pictorial and verbal category‐ratio scales for effort estimation in children B Marinov, S Mandadjieva, S Kostianev Child: care, health and development 34 (1), 35-43, 2008 | 56 | 2008 |
| Striving for better medical education: the simulation approach BE Sakakushev, BI Marinov, PP Stefanova, SS Kostianev, EK Georgiou Folia Med (Plovdiv) 59 (2), 123-131, 2017 | 50 | 2017 |
| Modified treadmill protocol for evaluation of physical fitness in pediatric age group--comparison with Bruce and Balke protocols. B Marinov, S Kostianev, T Turnovska Acta physiologica et pharmacologica Bulgarica 27 (2-3), 47-51, 2003 | 47 | 2003 |
| Psychopathology assessment methods revisited: on translational cross-validation of clinical self-evaluation scale and fMRI D Stoyanov, S Kandilarova, S Borgwardt, RD Stieglitz, K Hugdahl, ... Frontiers in Psychiatry 9, 21, 2018 | 37 | 2018 |
| Expiratory flow limitation during sleep in heavy snorers and obstructive sleep apnoea patients D Stanescu, S Kostianev, A Sanna, G Liistro, C Veriter European Respiratory Journal 9 (10), 2116-2121, 1996 | 37 | 1996 |
| Exercise performance and ventilatory efficiency in patients with mild and moderate liver cirrhosis K Terziyski, V Andonov, B Marinov, S Kostianev Clinical and Experimental Pharmacology and Physiology 35 (2), 135-140, 2008 | 32 | 2008 |
| University of Cincinnati Dyspnea Questionnaire for Evaluation of Dyspnoea during physical and speech activities in patients with chronic obstructive pulmonary disease: a … V Hodgev, S Kostianev, B Marinov Clinical physiology and functional imaging 23 (5), 269-274, 2003 | 32 | 2003 |
| Diagnostic task specific activations in functional MRI and aberrant connectivity of insula with middle frontal gyrus can inform the differential diagnosis of psychosis D Stoyanov, K Aryutova, S Kandilarova, R Paunova, Z Arabadzhiev, ... Diagnostics 11 (1), 95, 2021 | 29 | 2021 |
| Multidimensional system for assessment of COPD patients. Comparison with BODE index SS Kostianev, VA Hodgev, DH Iluchev Folia médica 50 (4), 29, 2008 | 25 | 2008 |
| Anthropometric and cardiopulmonary parameters in Bulgarian and Romany children: cross-sectional study S Mandadzhieva, B Marinov, S Kostianev, T Turnovska Croat Med J 46 (2), 294-301, 2005 | 25 | 2005 |
| Effects of short-term exercise training in patients with heart failure. M Tokmakova, B Dobreva, S Kostianev Folia Medica 41 (1), 68-71, 1999 | 24 | 1999 |
| Long-term changes in dyspnea, lung function, and exercise capacity in COPD patients. VA Hodgev, SS Kostianev, AA Torosian, IB Yanev, PB Mandoulova Folia Medica 46 (3), 12-17, 2004 | 23 | 2004 |
| Assessment of the acute impact of normobaric hypoxia as a part of an intermittent hypoxic training on heart rate variability Z Taralov, K Terziyski, P Dimov, B Marinov, MP Tarvainen, R Perini, ... Cor et Vasa 57 (4), e251-e256, 2015 | 18 | 2015 |
| Towards translational cross-validation of clinical psychological tests and fMRI: experimental implementation D Stoyanov, S Kandilarova, N Sirakov, M Stoeva, KG Velkova, ... Compt Rend Acad Bulg Sci 70, 879-84, 2017 | 17 | 2017 |
