Acute effects of Yo-Yo intermittent recovery test level 1 (Yo-YoIR1) on hemorheological parameters in female volleyball players

作者：Kilic Toprak Emine; Yapici Aysegul; Kilic Erkek Ozgen; Koklu Yusuf; Tekin Volkan; Alemdaroglu Utku; Bor Kucukatay Melek^*

来源：Clinical Hemorheology and Microcirculation, 2015, 60(2): 191-199.

DOI：10.3233/CH-141844

• Yo-Yo intermittent recovery test level 1 (Yo-YoIR1)
• exercise
• erythrocyte deformability
• viscosity

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/m(2)) 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.

• 出版日期2015