Can Heart Rate Variability Determine Recovery Following Distinct Strength Loadings? A Randomized Cross-Over Trial

Antonia Thamm, Nils Freitag, Pedro Figueiredo, Kenji Doma, Christoph Rottensteiner, Wilhelm Bloch and Moritz Schumann
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Antonia Thamm: Department of Molecular and Cellular Sports Medicine, German Sport University, 50933 Cologne, Germany
Nils Freitag: Department of Molecular and Cellular Sports Medicine, German Sport University, 50933 Cologne, Germany
Pedro Figueiredo: Portugal Football School, Portuguese Football Federation, 1495-433 Oeiras, Portugal
Kenji Doma: College of Healthcare Sciences, James Cook University, Townsville 4811, Australia
Christoph Rottensteiner: Firstbeat Technologies, 40100 Jyväskylä, Finland
Wilhelm Bloch: Department of Molecular and Cellular Sports Medicine, German Sport University, 50933 Cologne, Germany
Moritz Schumann: Department of Molecular and Cellular Sports Medicine, German Sport University, 50933 Cologne, Germany

IJERPH, 2019, vol. 16, issue 22, 1-11

Abstract: This study aimed to compare the acute effects of hypertrophic (HYP) and maximum strength (MAX) loadings on heart rate variability (HRV) and to compare possible loading-specific alterations with other markers of recovery. Ten young men with strength training experience performed two leg press loadings (HYP: five times 10 repetitions at 70% of one repetition maximum (1RM) with 2 minutes inter-set rest; MAX: 15 times one repetition at 100% of 1RM with 3 minutes inter-set rest) in a randomized order. The root mean square of successive differences statistically decreased after both protocols (HYP: 65.7 ± 26.6 ms to 23.9 ± 18.7 ms, p = 0.026; MAX: 77.7 ± 37.0 ms to 55.3 ± 22.3 ms, p = 0.049), while the frequency domains of HRV remained statistically unaltered. The low frequency (LF) band statistically increased at 48h post-MAX only ( p = 0.033). Maximal isometric voluntary contraction (MVC) statistically decreased after HYP ( p = 0.026) and returned to baseline after 24h of recovery. Creatine kinase (CK) statistically increased above baseline at 1h post-loadings (HYP p = 0.028; MAX p = 0.020), returning to baseline at 24h post. Our findings indicate no distinct associations between changes in HRV and MVC or CK.

Keywords: fatigue; recovery; MVC; HRV; RMSSD; strength performance (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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