Post– exercise proteinuria and increased urinary gamma-glutamly
transferase (GGT) levels can be predictive of exercise induced renal damage. In
the literature, there exists numerous studies on exercise induced proteinuria, but
studies investigating the effects of exercise on urinary GGT levels are quite few.
The purpose of this study was to determined that the changes in urinary GGT
activity, urinary creatinine and protein levels, in order to asses any potential
exercise induced tubular damage of rhythmic gymnasts competitors aged 7-10.
The study was performed on 11 rhythmic gymnasts who were in elementary
category as competitors of the same sport club in Istanbul - Turkey. The training
load was 3 hours 30 min for the same loading and same duration for all gymnasts.
Urine samples which were collected before, after and 24 hours after the training
were analyzed for urinary GGT, creatinine and protein levels. Significant
difference was observed between before and after training urinary GGT levels
(U/L and U/g creatinine) of rhythmic gymnasts (p<0.01, p<0.05). No statistically
significant difference was observed between before, after and 24 hours after
training in urinary GGT level (U/L and U/g creatinine), urinary creatinine and
protein levels (p>0.05). As a result, the level of GGT urine increased depending on
the exercises and decrease during resting but the training programme did not give
any damage in kidneys.