Specific features of athletes’ recovery after sub-maximal physical loads

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Corresponding member of RAS, Professor N.A. Fudin1
PhD S.Ya. Klassina1
1Anokhin Scientific Research Institute of Normal Physiology RAS, Moscow

Objective of the study was to identify the specific features of recovery of the functional status of a person under rest conditions and using the local rhythmic thermal effects after performing sub-maximal physical loads to failure.
Methods and structure of the study. The study involved 19 male amateur athletes aged 18-20 years. Each testee was examined twice, when they were to do physical exercise to failure on a cycle ergometer. During the first examination, the athletes recovered after the exercise in a state of rest (passive recovery), and during the second – against the local rhythmic thermal effects synchronized with the respiratory rhythm. The athletes’ functional status was evaluated based on the ECG and pneumogram data, external respiration rates, and level of subjective well-being. Before and after the examination, we measured the subjects’ arterial blood pressure and hemodynamic indices.
Results and conclusions. The local rhythmic thermal effects synchronized with the respiratory rhythm activated the vasomotor center in the medulla oblongata and shifted the autonomic balance towards the parasympathetic nervous system. As a result, the vessel lumen increased, which led to a decrease in the cardiac output and contributed to the normalization of hemodynamics. With the increase in the parasympathetic effects, there occurred a bronchial narrowing, which led to a downward trend in lung ventilation. As a result, there were fewer shifts in the vegetative values relative to the baseline, which suggested an almost complete recovery of the functional status of the testees. This clearly proves the effectiveness of recovery based on the local rhythmic thermal effects.

Keywords: sub-maximal physical load to failure, recovery, local rhythmic thermal effects.

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