2.9. Blood Lactate and Blood Gas Measurements
BLOOD
For each participant, venous blood samples were collected at study visits before and after the completion of the supplementation protocol to evaluate changes in blood lactate and blood gas parameters prior to, immediately after, and 5 min and 10 min after the completion of the sprint cycling protocol. For all blood samples, a small amount of blood (<1 mL) was collected from an IV catheter via a syringe and inserted into a 100 µL capillary tube. Participants were instructed to lie prone immediately following the sprint cycling protocol while blood was collected and until the final 10 min post sample was collected. All collected samples were analyzed using a portable blood gas analyzer (epoc Blood Analysis System, Epocal, Inc., Ottawa, ON, Canada) for sodium, potassium, chloride, anion gap, calcium, glucose, urea, creatinine, lactate, hematocrit, hemoglobin, pH, pCO