Physical activity as a health factor modifying heart rate variability (HRV)

Abstract

Purpose: The aim of the research was the evaluation of the selected HRV factors of the training volleyball players in two training periods and non-training people. Materials and methods: The study involved 8 leading volleyball players aged 20-23 and 13 non-training persons aged 19-26. The study of the training players was conducted twice: in the precompetition and in the competition period. The study for the non-training persons was conducted once. The selected factors of the spectral analysis have been evaluated: TP [ms(2)], share of LF and HF power [n. u], LF/HF indicator and time analysis factors: RR [ms], HR [1/min], RMSSD [ms]. Results: Statistically significant differences appeared only in the selected time analysis factors ( RR, HR), between the group of the training and non-training persons. Other differences in the evaluated parameters were not statistically significant. Conclusions: Physical activity influences on the HRV growth. HRV measurement may serve for the control of the changes taking place in the AUN under the influence of the physical activity.