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Glomerular Filtration Rate Is Unchanged by Ultramarathon.
Wołyniec W, Ratkowski W, Kasprowicz K, Jastrzębski Z, Małgorzewicz S, Witek K, Grzywacz T, Żmijewski P, Renke M. Wołyniec W, et al. Among authors: witek k. J Strength Cond Res. 2018 Nov;32(11):3207-3215. doi: 10.1519/JSC.0000000000002348. J Strength Cond Res. 2018. PMID: 29283932
Wolyniec, W, Ratkowski, W, Kasprowicz, K, Jastrzebski, Z, Malgorzewicz, S, Witek, K, Grzywacz, T, Zmijewski, P, and Renke, M. ...
Wolyniec, W, Ratkowski, W, Kasprowicz, K, Jastrzebski, Z, Malgorzewicz, S, Witek, K, Grzywacz, T, Zmijewski, P, and Ren …
Myokines in Response to a Tournament Season among Young Tennis Players.
Witek K, Żurek P, Zmijewski P, Jaworska J, Lipińska P, Dzedzej-Gmiat A, Antosiewicz J, Ziemann E. Witek K, et al. Biomed Res Int. 2016;2016:1460892. doi: 10.1155/2016/1460892. Epub 2016 Aug 29. Biomed Res Int. 2016. PMID: 27652258 Free PMC article.
Changes in electrolytes and uric acid excretion during and after a 100 km run.
Wołyniec W, Ratkowski W, Kasprowicz K, Małgorzewicz S, Aleksandrowicz E, Witek K, Grzywacz T, Żmijewski P, Renke M. Wołyniec W, et al. Among authors: witek k. J Biol Regul Homeost Agents. 2018 Sep-Oct;32(5):1205-1210. J Biol Regul Homeost Agents. 2018. PMID: 30334414 Clinical Trial.
Upper Respiratory Tract Infection and Mucosal Immunity in Young Ice Hockey Players During the Pretournament Training Period.
Orysiak J, Witek K, Malczewska-Lenczowska J, Zembron-Lacny A, Pokrywka A, Sitkowski D. Orysiak J, et al. Among authors: witek k. J Strength Cond Res. 2019 Nov;33(11):3129-3135. doi: 10.1519/JSC.0000000000002557. J Strength Cond Res. 2019. PMID: 31644518
Orysiak, J, Witek, K, Malczewska-Lenczowska, J, Zembron-Lacny, A, Pokrywka, A, and Sitkowski, D. ...
Orysiak, J, Witek, K, Malczewska-Lenczowska, J, Zembron-Lacny, A, Pokrywka, A, and Sitkowski, D. ...
The Effect of Vitamin D3 Supplementation on Hepcidin, Iron, and IL-6 Responses after a 100 km Ultra-Marathon.
Kasprowicz K, Ratkowski W, Wołyniec W, Kaczmarczyk M, Witek K, Żmijewski P, Renke M, Jastrzębski Z, Rosemann T, Nikolaidis PT, Knechtle B. Kasprowicz K, et al. Among authors: witek k. Int J Environ Res Public Health. 2020 Apr 24;17(8):2962. doi: 10.3390/ijerph17082962. Int J Environ Res Public Health. 2020. PMID: 32344650 Free PMC article. Clinical Trial.
Total bilirubin in athletes, determination of reference range.
Witek K, Ścisłowska J, Turowski D, Lerczak K, Lewandowska-Pachecka S, Pokrywka A. Witek K, et al. Biol Sport. 2017 Mar;34(1):45-48. doi: 10.5114/biolsport.2017.63732. Epub 2016 Dec 1. Biol Sport. 2017. PMID: 28416897 Free PMC article.
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