1. Effect of Intensity on Changes in Cardiac Autonomic Control of Heart Rate and Arterial Stiffness After Equated Continuous Running Training Programs
- Author
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Mohammad Soltani, Masoud Jokar Baluchi, Daniel Boullosa, Ali Daraei, Patricia K. Doyle-Baker, Ayoub Saeidi, Beat Knechtle, Kambiz Moradi Dehbaghi, Shirin Shirzad Mollabashi, Trisha A. VanDusseldorp, Hassane Zouhal, Shahid Beheshti University, Kharazmi University [Tehran], James Cook University (JCU), Universidade Federal de Mato Grosso do Sul (UFMS), University of British Columbia (UBC), University of Calgary, University of Kurdistan, Universität Zürich [Zürich] = University of Zurich (UZH), West Tehran Islamic Azad University [Tehran] (WTIAU), Atatürk Üniversitesi, Kennesaw State University (KSU), Laboratoire Mouvement Sport Santé (M2S), École normale supérieure - Cachan (ENS Cachan)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Brest (UBO)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), I2S, University of Kurdistan [Sanandaj - Iran] (UOK), École normale supérieure - Cachan (ENS Cachan)-Université de Rennes (UR)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), University of Zurich, VanDusseldorp, Trisha A, and Zouhal, Hassane
- Subjects
11035 Institute of General Practice ,Physiology ,training intensity ,[SDV]Life Sciences [q-bio] ,HRV ,blood pressure ,610 Medicine & health ,1314 Physiology ,030229 sport sciences ,030204 cardiovascular system & hematology ,vascular function ,03 medical and health sciences ,2737 Physiology (medical) ,0302 clinical medicine ,arterial stiffness ,Physiology (medical) ,QP1-981 ,autonomic function ,Original Research - Abstract
Background: It is well known that exercise training has positive effects on both cardiac autonomic function and arterial stiffness (AS). However, it is not clear that which exercise training variables, intensity or volume, or both, play a crucial role in this regard. This study investigates the chronic effects of high-volume moderate-intensity training (HVMIT) and low-volume high-intensity training (LVHIT) on heart rate variability (HRV) and AS in sedentary adult men.Materials and Methods: Notably, 45 males (age: 42 ± 5.7 years) were randomly assigned to a control (n = 15), HVMIT (n = 15), or LVHIT (n = 15). The HVMIT group ran three times per week on a treadmill at 50–60% of VO2max for 45–60 min, while the LVHIT trained at 70–85% of VO2max for 25–40 min. Both training protocols were equated by caloric expenditure. HRV, pulse wave velocity (PWV), hemodynamic variables, and body composition were measured before and after 12 weeks.Results: Both protocols (i.e., HVMIT and LVHIT) significantly increased the SD of normal sinus beat intervals (SDNN) and high-frequency (HF) bands (p < 0.05) after 12 weeks. Whereas the low-frequency (LF)-HF ratio decreased significantly in both training protocols (p < 0.05); however, these changes were significantly greater in the LVHIT protocol (p < 0.05). Furthermore, the root mean square of successive RR interval differences (RMSSD) significantly increased only in the LVHIT (p < 0.05). Moreover, a significant decrease in LF and PWV was only observed following the LVHIT protocol (p < 0.05). Some measures of HRV and PWV were significantly correlated (r = 0.275–0.559; p < 0.05).Conclusion: These results show that the LVHIT protocol was more efficient for improving HRV variables and PWV than the HVMIT protocol after 12 weeks of continuous running training. Interestingly, changes in some HRV parameters were related to changes in PWV. Further studies should elaborate on the link between central and peripheral cardiovascular adaptations after continuous and intermittent training regimens differing in intensity.
- Published
- 2021