| The association between iron and vitamin D status in female elite athletes J Malczewska-Lenczowska, D Sitkowski, O Surała, J Orysiak, ... Nutrients 10 (2), 167, 2018 | 69 | 2018 |
| Effects of short-term plyometric training on physical performance in male handball players K Mazurek, P Zmijewski, H Makaruk, A Mróz, A Czajkowska, K Witek, ... Journal of Human Kinetics 63 (1), 137-148, 2018 | 51 | 2018 |
| Cardiovascular magnetic resonance with parametric mapping in long-term ultra-marathon runners ŁA Małek, M Barczuk-Falęcka, K Werys, A Czajkowska, A Mróz, K Witek, ... European Journal of Radiology 117, 89-94, 2019 | 40 | 2019 |
| Total bilirubin in athletes, determination of reference range K Witek, J Ścisłowska, D Turowski, K Lerczak, S Lewandowska-Pachecka, ... Biology of sport 34 (1), 45-48, 2017 | 38 | 2017 |
| Studies on lactate peak in blood following judo match Z Obmiński, K Lerczak, K Witek, M Pintera J Combat Sports Martial Arts 2 (2), 95-99, 2010 | 24 | 2010 |
| Myokines in response to a tournament season among young tennis players K Witek, P Żurek, P Zmijewski, J Jaworska, P Lipińska, A Dzedzej-Gmiat, ... BioMed research international 2016, 2016 | 23 | 2016 |
| Left ventricular hypertrophy in middle-aged endurance athletes: is it blood pressure related? LA Malek, A Czajkowska, A Mroz, K Witek, M Barczuk-Falecka, D Nowicki, ... Blood Pressure Monitoring 24 (3), 110-113, 2019 | 22 | 2019 |
| Glomerular filtration rate is unchanged by ultramarathon W Wolyniec, W Ratkowski, K Kasprowicz, Z Jastrzebski, S Malgorzewicz, ... The Journal of Strength & Conditioning Research 32 (11), 3207-3215, 2018 | 20 | 2018 |
| The Effect of Vitamin D3 Supplementation on Hepcidin, Iron, and IL-6 Responses after a 100 km Ultra-Marathon K Kasprowicz, W Ratkowski, W Wołyniec, M Kaczmarczyk, K Witek, ... International journal of environmental research and public health 17 (8), 2962, 2020 | 19 | 2020 |
| Mucosal immunity and upper respiratory tract infections during a 24-week competitive season in young ice hockey players J Orysiak, K Witek, A Zembron-Lacny, B Morawin, ... Journal of sports sciences 35 (13), 1255-1263, 2017 | 18 | 2017 |
| White blood cells in Polish athletes of various sports disciplines J Orysiak, K Witek, P Żmijewski, J Gajewski Biology of Sport 29 (2), 101-105, 2012 | 13 | 2012 |
| Upper Respiratory Tract Infection and mucosal immunity in young ice hockey players during the pretournament training period J Orysiak, K Witek, J Malczewska-Lenczowska, A Zembron-Lacny, ... The Journal of Strength & Conditioning Research 33 (11), 3129-3135, 2019 | 11 | 2019 |
| Short-Term d-Aspartic Acid Supplementation Does Not Affect Serum Biomarkers Associated With the Hypothalamic–Pituitary–Gonadal Axis in Male Climbers B Crewther, K Witek, P Draga, P Zmijewski, Z Obmiński International journal of sport nutrition and exercise metabolism 29 (3), 259-264, 2019 | 10 | 2019 |
| O płci od nowa: własna tożsamość oczami osób transpłciowych A Kłonkowska, K Bojarska, K Witek Wydawnictwo Uniwersytetu Gdańskiego, 2015 | 10* | 2015 |
| Changes in serum lipid profile of elite volleyball players in the competition period K Witek Biomedical Human Kinetics 1 (2009), 63-66, 2009 | 10 | 2009 |
| Changes in psycho-physiological indices in male valleyball players during 5-day international tournament Z Obminski, K Lerczak, H Mroczkowska, K Witek Polish Journal of Sports Medicine 28 (1), 67-73, 2012 | 9 | 2012 |
| Cholesterol fractions, C-reactive protein and creatine kinase activity in plasma of female athletes E Hübner-Woźniak, M Malara, J Okęcka-Szymańska, K Witek Phys. Educ. Sport 52, 88-91, 2008 | 6 | 2008 |
| The impact of physical training on neutrophil extracellular traps in young male athletes–a pilot study J Orysiak, JK Tripathi, KK Brodaczewska, A Sharma, K Witek, D Sitkowski, ... Biology of Sport 38 (3), 459-464, 2021 | 5 | 2021 |
| Physiological aspects of different roller skiing techniques in field conditions M Starczewski, P Żmijewski, K Witek, A Klusiewicz Journal of Human Kinetics 66 (1), 111-120, 2019 | 5 | 2019 |
| Blood lactate level and perceptual responses (RPE) to an official fight and to a sparing in male taekwondo contestants Z Obmiński, K Lerczak, K Witek, M Pintera, W Błach, E Szczuka Pol. J. Sports Med 27, 283-287, 2011 | 5 | 2011 |
