Effects of a single power strength training session on heart rate variability when performed at different simulated altitudes
(Auswirkungen einer einzelnen Schnellkraft-Trainingseinheit auf die Herzfrequenzvariabilität, wenn diese in unterschiedlichen simulierten Höhen absolviert wird)
Background: This study assessed heart rate variability (HRV) after a single power strength training session performed at different hypoxic levels.
Materials and Methods: Eight physically active subjects (31.1 ± 4.3 years; 177.6 ± 3.0 cm; 70.1 ± 5.2 kg) performed 6 bouts of 15-second continuous maximal jump exercises interspersed by 3 minutes of rest at different altitude levels (total volume of each session: 20 minutes). The normoxic hypoxia levels were FiO2 low altitude: 20.9%; moderate altitude: 16.5%; and high altitude: 13.5%.
Results: Average power output during the jumps was similar for all conditions (?3150 W). Twenty-four hours before (PRE) and 24 hours after (POST) each training session, HRV parameters (R-R, square root of the mean of the sum of differences between intervals [RMSSD], pNN50, and very low frequency, low frequency, and high frequency) were determined without resulting in significant statistical differences, neither from PRE to POST nor between conditions (p > 0.05).
Conclusions: This study showed a negligible perturbation of HRV parameters 24 hours after a single power strength session up to a hypoxic level equivalent to 4000?m. Further studies are needed to determine the hypoxia-dependent threshold and intensities of training loads affecting HRV.
© Copyright 2020 High Altitude Medicine & Biology. Mary Ann Liebert. Alle Rechte vorbehalten.
Schlagworte: | Training Trainingseinheit Kraft Schnellkraft Herzfrequenz Herz Frequenz Variabilität Höhentraining Hypoxie Simulation anaerob Belastung Herzfrequenzvariabilität |
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Notationen: | Kraft-Schnellkraft-Sportarten Trainingswissenschaft Biowissenschaften und Sportmedizin |
DOI: | 10.1089/ham.2020.0014 |
Veröffentlicht in: | High Altitude Medicine & Biology |
Veröffentlicht: |
2020
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Jahrgang: | 21 |
Heft: | 3 |
Seiten: | 292-296 |
Dokumentenarten: | Artikel |
Sprache: | Englisch |
Level: | hoch |