OBJECTIVE:
To verify the effect of training load in biochemical, psychological, physiological and hematological variables during a pre-season in professional soccer players.
METHODS:
Eight male professional soccer players were monitored for 21 days during a pre-season and submitted to four evaluations (T1, T2, T3 and T4). The variables analysed were: hemoglobin, creatine kinase, POMS questionnaire and heart rate variability in time and frequency domains. The load of each training session was quantified using the TRIMP method.
RESULTS:
Creatina kinase increased significantly (p<0.05) in T2 and T3 with respect to T1, following the behaviour of the training load. The other variables showed no significant difference (p>0.05) and no correlations between variables were found.
CONCLUSION:
It seems that creatina kinase is the most sensitive variable to training load compared to the other variables. Heart rate variability values in frequency domain presented a trend in response to changes in training load.
sports; athletic performance; creatine kinase; fatigue
