Biomechanics and Medicine in Swimming XI

that the sudden increase of the volume of training causes significant
alterations in several markers, namely the increase in the concentration
of the stress hormone cortisol, the autonomic imbalance through the
reinforcement of sympathetic regulation. As previously found (Rietjens
et al. 2005), the mood proves to be a sensitive marker of the impact of
training and its deterioration seems to indicate problems in the adaptation
to the training process.
These changes could correspond to the normal overload, but they
should be considered carefully by coaches in order to optimize performance
development. More precisely, monitoring psychological adaptation
to training seems to be a good approach to prevent failure in the
tolerance of individuals to workload. Our results seem to agree with
those of Norris & Smith, (2002) who advocate an adequate planning
of recovery strategies, that could contribute to avoiding the negative
impact of the sudden increase of training load especially at the initial
preparation phase.
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AcKnoWledGeMents
This project was financed by the Portuguese foundation for Science and
Technology (FCT PTDC/ DES/ 68647/ 2006).
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