Abstract
This study aims at assessing the modifications of renal parameters with 13 female players of the same Benin team-amateur Division 1, during two consecutive handball games played 26 hours apart. The players are divided into two groups: starters (ST: N = 7) and nonstarters (NS: N = 6). The estimated glomerular filtration rate (eGFR) with Cockcroft-Gault and MDRD formulae, the fractional excretion of sodium (FeNa), the plasma haemoglobin (Hb) and albumin (Alb) were assayed at rest and at the end of each game. At the end of the first game, only eGFR decreased significantly by at least 16.30% (p 0.05). FeNa varied in no group, neither after the first game, nor after the second (p > 0.05). But a cumulative reduction is observed between the values before the first and those recorded at the end of the second game in both ST and NS groups. The status of the players (ST or NS) did not influence the results. Two games of handball played 26 hours apart in the sub-Saharan environment of Cotonou caused in girls, a transitory decrease in eGFR without a cumulative effect. FeNa decreased too, but with a cumulative effect which indicates large sodium retention.
Highlights
The transition from resting to physical exercise may cause benign or pathological modifications in different organs in the kidneys, because of the redistribution of the cardiac output to active muscles (Goffin & Nielsens, 2006)
This study aims at comparing in starters and nonstarters of the same team, the modifications of the renal parameters during a series of two handball games, played in the sub-Saharan environment of the Republic of Benin
Three girls out of 13, among whom one ST were in menstrual phase, four players out of 13 among whom three ST were in follicular phase
Summary
The transition from resting to physical exercise may cause benign or pathological modifications in different organs in the kidneys, because of the redistribution of the cardiac output to active muscles (Goffin & Nielsens, 2006). This induces a decrease in renal blood flow, in accordance with the exercise intensity, and a transitory deterioration in the renal hemodynamic as well as a stimulation of the electrolytes and proteins excretion (Poortmans, 1995). That is more especially needed in game sports, in the field of African handball, in which the competitions are organized as grouped tournaments, with short resting periods between games
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