PhD Scientific Days 2023

Budapest, 22-23 June 2023

Clinical Medicine - Posters I

Relationship between Short-term Heart Rate Variability and Fitness Parameters among Youth National Water Polo Players

Máté Babity 12, Márk Zámodics 12, Éva Kovács 1, Ágnes Bucskó-Varga 1, Panka Kulcsár 1, Alexandra Fábián 1, Kinga Grebur 1, Dóra Boroncsok 1, Regina Benkő 1, Marcell László 1, Bálint Lakatos 12, Hajnalka Vágó 12, Attila Kovács 1, Béla Merkely 12, Orsolya Kiss 12
1 Heart and Vascular Center, Semmelweis University, Budapest
2 Department of Scports Medicine, Semmelweis University, Budapest

Text of the abstract

Introduction: Physical fitness is a complex outcome of long- and short term cardiovascular-, respiratory-, metabolic- and neurohormonal adaptation to exercise.
Aim: We aimed to correlate short-term heart rate variability (HRV) variables characterizing autonomic regulation, with various fitness parameters among youth elite athletes.
Method: Time (AVRR, SDRR, RMSSD pNN50) and frequency domain (LFpow, HFpow, LF/HF ratio) parameters of HRV were examined during 5-minute supine, resting position, followed by maximal intensity cardiopulmonary exercise testing (CPET). Data analysis was carried out with Kubios and SPSS softwares.
Result: 200 youth national water polo players (age: 16.3±1.8y; training: 15.6±4.9h/w, m: 100) were examined. Average resting heart rate was 66.6±10.7 BPM. Average HRV data were: AVNN: 924.0±146.4ms; SDNN:69.0±34.8ms; RMSSD:77.6±49.3ms; pNN50:39.2±23.7%; LFpow:2029.1±2039.7ms2; HFpow:2862.7±3908.3ms2; LF/HF:1.4±1.3. Weak correlations were found between the HRV parameters, training hours and anthropometric data. No significant differences could be observed in the examined HRV parameters by sexes, only in HFpow (m:2235.9±2649.0ms2, f:3489.4±4779.8ms2, p=0.012) and LF/HF (m:1.7±1.5, f:1.2±1.1, p=0.003). Regarding the CPET, correlations were found in female athletes between AVNN, SDNN, RMSSD, pNN50, HFpow and the oxygen uptake (VO2) measured at the anaerobic threshold; and pNN50 and maximal VO2. Among male athletes, significant interactions were only found between LFpow and VO2 at the anaerobic threshold; and AVNN and maximal VO2. Maximal heart rate showed significant correlation with resting AVNN in both sexes (m: r=-0.359, p<0.001; f: r=-0.265, p=0.008). Heart rate reserve showed strong correlations with all HRV parameters. The HRV parameters not or only weakly correlated with heart rates at anaerobic threshold, 1-minute heart rate recovery, maximal lactate levels and maximal ventilation.
Conclusion: By our results, short-term some HRV measurements show correlations with some CPET results. However, weak correlations were found between HRV, age and resting parameters of physical fitness. Individual follow-up of resting HRV parameters beside CPET results could be a promising method in the follow-up of personal changes in physical fitness.
Funding: RRF-2.3.1-21-2022-00004; K135076; TKP2021-NKTA-46; EFOP-3.6.3-VEKOP-16-2017-00009; ÚNKP-22-3-II-SE-47