Heart rate variability (HRV) is a physiological phenomenon denoting inconstancy of the interval between heart beats. Power spectrum analysis of heart rate variability (HRV-PSA) is as a non-invasive tool, which is currently used for a variety of purposes, such as quantification of autonomic modulation during exercise and recovery, assessment of autonomic changes associated with the short-term an...

OBJECTIVE To examine different hormonal responses to heavy endurance training and overtraining in female athletes. DESIGN Submaximal and maximal treadmill tests, self-report mood measures, and stress hormone analyses were repeated at baseline, after 4 weeks and at the end of 6 to 9 weeks of experimental intensive training and after 4 to 6 weeks of recovery. SUBJECTS Fifteen healthy female e...

A statistical theory for overtraining is proposed. The analysis treats general realizable stochastic neural networks, trained with Kullback-Leibler divergence in the asymptotic case of a large number of training examples. It is shown that the asymptotic gain in the generalization error is small if we perform early stopping, even if we have access to the optimal stopping time. Based on the cross...

and concrete schizophrenics. Journal ofAbnormal Psychology, 1968, 73, 330-335.OHLRICH, E. S., & Ross, L. E. Reversal and non-reversal shift learning in retardates as a functionof overtraining. Journal of Experimental Psy-chology, 1966, 72, 622-624.SLAMECKA, N. J. A methodological analysis of shiftparadigms in human discrimination learning. Psy-chological Bulletin...

We discuss the importance of finding the correct model complexity, or regularization level, in the self-organizing map (SOM) algorithm. The complexity of the SOM is determined mainly by the width of the final neighborhood, which is usually chosen ad hoc or set to zero for optimal quantization error. However, if the SOM is used for visualizing the joint probability distribution of the data, then...

The overtraining extinction effect (OEE), a phenomenon in which extended training facilitates extinction, has been found in mammals and reptiles. However, fish have never shown OEE. No study has yet investigated OEE in newts, a representative amphibian species. We tested whether newts, Cynops pyrrhogaster, show OEE in a straight-array task. All animals received five trials per day and were give...

OBJECTIVE In this work, whether a two-bout exercise protocol can be used to make an objective, immediately available distinction between non-functional over reaching (NFO) and overtraining syndrome (OTS) was studied. DESIGN Underperforming athletes who were diagnosed with the suspicion of NFO or OTS were included in the study. Recovery of the athletes was monitored by a sports physician to re...