Authors: Alexandru Maftei1, Roxana Maria Hadmaş2, Ștefan Adrian Martin3
Affiliation: 1Licensed dietician, H2O Team, Tîrgu Mureș, Romania
2Pediatrics I Department, University of Medicine and Pharmacy Tîrgu Mureș, Romania
3Department of Physiology, University of Medicine and Pharmacy Tîrgu Mureș, Romania
Background. Urinary parameters analysis in water polo players can be influenced by specific training evolution.
Aim. The aim of the study was to evaluate the main urinary parameters that can determine physical activity changes in a group of male athletes.
Methods. A cross sectional study was conducted in Tîrgu Mureș, Romania between 6th of November and 8th of January 2018, on a group consisting of 14 male water polo players, aged 13 years old, enrolled in national competitions. In order to determine urine density and urinary pH values, urinary sample collection was required, both at the beginning and at the end of the training session. Urine density and urinary pH were assessed using urinary Cybow strips.
Results. Statistically significant differences regarding urinary parameters and water polo training periodization were recorded. Thus, both urinary pH values, determined both before (p=0.0001, r=-0.7451, 95%CI =-0.8416 to -0.6023) and at the end (p=0.0467, r=-0.2557, 95%CI =-0.4827 to 0.003541) of the training session indicated low values when high urinary density was associated. Also, a decrease in urinary pH values was associated with a high urinary density determined at the end of the physical effort (p=0.0231, r=-0.2906, 95%CI =-0.5111 to -0.03418).
Conclusions. The main urinary parameters, urine density and urinary pH, recorded significant statistical changes related to the performed physical effort. An elevated urinary density value indicated a specific dehydration state, also evidenced by a low urinary pH value.
Keywords: pH, density, water polo