Home > Journals > The Journal of Sports Medicine and Physical Fitness > Past Issues > The Journal of Sports Medicine and Physical Fitness 2020 September;60(9) > The Journal of Sports Medicine and Physical Fitness 2020 September;60(9):1202-8

CURRENT ISSUE
 

JOURNAL TOOLS

eTOC
To subscribe PROMO
Submit an article
Recommend to your librarian
 

ARTICLE TOOLS

Publication history
Reprints
Permissions
Cite this article as

 

ORIGINAL ARTICLE  EXERCISE PHYSIOLOGY AND BIOMECHANICS 

The Journal of Sports Medicine and Physical Fitness 2020 September;60(9):1202-8

DOI: 10.23736/S0022-4707.20.10814-4

Copyright © 2020 EDIZIONI MINERVA MEDICA

language: English

Hemodynamics in young athletes following high-intensity interval or moderate-intensity continuous training

Sascha KETELHUT 1, 2 , Timo KIRCHENBERGER 2, 3, Reinhard G. KETELHUT 2, 3

1 Institute of Sports Science, Martin-Luther-University Halle-Wittenberg, Halle, Germany; 2 Medical Center Berlin, Berlin, Germany; 3 Charité-University Berlin, Berlin, Germany



BACKGROUND: The present study aimed to investigate the effects of high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) on blood pressure (BP) and parameters of arterial stiffness in young athletes.
METHODS: Seventeen rowers (aged 15±1.3 years) were randomized into an intervention group (IG, N.=10) and the control group (CG, N.=7). During an 8-week intervention period, the IG completed a HIIT on the rowing ergometer twice-weekly (2×4×2 min at ≈95% of maximum heart rate [HRmax], 60 s rest) in addition to the regular rowing training (3×/week MICT 70-90 min, ≈70% HRmax). The CG completed the regular normal rowing training and, instead of the HIIT units, two additional MICT units (70-90 min, ≈70% HRmax). Before and after the intervention period, hemodynamic parameters were recorded non-invasively in both groups.
RESULTS: After the intervention period, there was a significant decrease in peripheral systolic (P=0.01) and diastolic (P=0.05) BP, as well as in central systolic (P=0.05) and diastolic BP (P=0.03) in the IG. Furthermore, pulse wave velocity (PWV) (P=0.05) was significantly reduced. Analysis of intervention effects revealed significant between-group differences in central diastolic BP (P=0.05), in augmentation pressure (P=0.02), and in augmentation index (P=0.006) favoring IG. The CG showed no significant changes in the respected parameters throughout the intervention.
CONCLUSIONS: Already in adolescent athletes, a HIIT intervention has beneficial effects on peripheral and central BP as well as on PWV, augmentation pressure, and augmentation index.


KEY WORDS: High-intensity interval training; Water sports; Anaerobic threshold; Athletes; Hemodynamics

top of page