EFFECTS OF MULTIBUFFER SUPPLEMENTATION ON ACID-BASE-BALANCE AND 2,3-DIPHOSPHOGLYCERATE FOLLOWING REPETITIVE ANAEROBIC EXERCISE

The purpose of this investigation was to determine the effects of a 3. 5-day dietary multibuffer supplement (containing predominantly inorgan ic phosphate, or P-i, along with bicarbonate and carnosine, i.e,, Phos Fuel(TM)) on repetitive (four trials separated by 2 min rest) Wingate test (WT) performances and whole blood 2,3-diphosphoglycerate (2,3-DPG ) concentrations in 10 recreationally trained road cyclists (T) and 10 normally active but untrained (UT) men. A 2-week washout period was u tilized between experimental sessions. Venous blood samples were obtai ned via cannula once before exercise (baseline), immediately post each WT, and 3 min after the final WT (recovery). The data indicate that t his supplement does not affect acid-base status with following intense anaerobic exercise and does not improve repetitive WT performance. Ho wever, the supplement does enhance postexercise levels of 2,3-DPG and the 2,3-DPG/Hb ratio in recreationally trained cyclists while improvin g acute recovery of peak power in these men.