The effect of acute creatinine monohydrate loading on wingate test results in 18-21 years old male soccer players

Ünal, M. and Sahinkaya, T. and Namarasli, D. and Akkaya, V. (2005) The effect of acute creatinine monohydrate loading on wingate test results in 18-21 years old male soccer players. Acta Physiologica Hungarica, 92 (3-4). pp. 221-230. ISSN 0231-424X

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Abstract

Studies indicate that ingested creatinine monohydrate (CrM) preparations may boost the supply of creatinine phosphate in muscle and enhance recovery after exercise. However there is still controversy on the effect of CrM replenishment on ergonomically measured anaerobic exercise tolerance. The purpose of this study is to examine the effect of acute high dose CrM loading on anaerobic exercises like standing long jump (SLJ), stan ding vertical skip (SVS) and anaerobic wingate test (AWT). The study is a prospective, double blind, placebo controlled study. The study included 30 young male soccer players randomized to receive either 0.25 gr/kg/day CrM for 4 days (Group 1, 15 athletes, mean age 18.64±0.92 years, height 1.76±0.05 meter, weight 71±5 kg) or same dosage of maltodextrin as matching placebo (Group 2, 15 athletes, mean age 18.47±1.23 years, height 1.78±0.06 meter, weight 73±5 kg). Anaerobic exercise tolerance was measured befo re and after intervention.In Group 1 (CrM group) treatment had no effect on SLJ, SVS parameters. It also had no effect on peak power and fatigue index of AWT. However CrM treatment significantly but slightly increased mean power (+4%), minimum power (+7%) and total work (+4%) parameters of AWT. Placebo treatment had no effect on any of these parameters. Lactic acid levels increased in both groups in response to exercise though post intervention lactic acid increase in Group 1 seemed slightly blunted.The CrM supplements caused a significant but slight increase in anaerobic wingate test parameters of mean power, minimum power and total power.

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