Acute effects of Yo-Yo intermittent recovery test level 1 (Yo-YoIR1) on hemorheological parameters in female volleyball players.
In the present study, we investigated possible alterations in red blood cell (RBC) deformability, plasma and whole blood viscosities (WBV) and hematological parameters in response to Yo-Yo intermittent recovery test level 1 (Yo-YoIR1) which is currently used to assess endurance performance, in female volleyball players. Eight volleyball player volunteers from Pamukkale University (mean age19,9 ± 2,2 years; mean body height 177.5 ± 1.99 cm; mean body mass index 21.66 ± 0.64 kg/m2) participated to the study. Blood samples were collected before and immediately after test. Red blood cell (RBC) deformability was determined by ektacytometer, plasma and whole blood viscosities (WBV) by a cone-plate rotational viscometer. Hematological parameters were determined using an electronic hematology analyzer. The Yo-YoIR1 applied, induced acute increments in WBV at native hematocrit (Hct) measured at a shear rate of 150 s-1 and 375 s-1, RBC deformability and WBC count. The results of the current study indicate that, the Yo-Yo IR1 test used to determine physical capacity of the player, by resulting in increments in RBC deformability contributes blood flow and thus, athletic performance of the individual.
Pamukkale University, Faculty of Medicine, Department of Physiology, Kinikli, Denizli, Turkey.
Emine
E
Kilic-Toprak
Pamukkale University, School of Sport Science and Technology, Kinikli, Denizli, Turkey.
Ayşegül
A
Yapici
Pamukkale University, Faculty of Medicine, Department of Physiology, Kinikli, Denizli, Turkey.
Ozgen
O
Kilic-Erkek
Pamukkale University, School of Sport Science and Technology, Kinikli, Denizli, Turkey.
Yusuf
Y
Koklu
Pamukkale University, Faculty of Medicine, Department of Physiology, Kinikli, Denizli, Turkey.
Volkan
V
Tekin
Pamukkale University, School of Sport Science and Technology, Kinikli, Denizli, Turkey.
Utku
U
Alemdaroglu
Pamukkale University, Faculty of Medicine, Department of Physiology, Kinikli, Denizli, Turkey.
Melek
M
Bor-Kucukatay
D000328:Adult; D056352:Athletes; D054874:Athletic Performance / Q000502:physiology*; D004907:Erythrocyte Deformability / Q000502:physiology*; D004912:Erythrocytes / Q000502:physiology*; D005080:Exercise Test / Q000379:methods*; D005260:Female; D018056:Hemorheology; D006801:Humans; D054798:Volleyball; D055815:Young Adult
Yo-Yo intermittent recovery test level 1 (Yo-YoIR1); erythrocyte deformability; exercise; viscosity