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

Ketelhut, Sascha; Kirchenberger, Timo; Ketelhut, Reinhard G. (2020). Hemodynamics in young athletes following high-intensity interval or moderate-intensity continuous training. The journal of sports medicine and physical fitness, 60(9), pp. 1202-1208. Edizioni Minerva Medica 10.23736/s0022-4707.20.10814-4

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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 [HR<inf>max</inf>], 60 s rest) in addition to the regular rowing training (3×/week MICT 70-90 min, ≈70% HR<inf>max</inf>). The CG completed the regular normal rowing training and, instead of the HIIT units, two additional MICT units (70-90 min, ≈70% HR<inf>max</inf>). 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

07 Faculty of Human Sciences > Institute of Sport Science (ISPW)
07 Faculty of Human Sciences > Institute of Sport Science (ISPW) > Health Science

UniBE Contributor:

Ketelhut, Sascha Ingemar

Subjects:

700 Arts > 790 Sports, games & entertainment

ISSN:

0022-4707

Publisher:

Edizioni Minerva Medica

Language:

English

Submitter:

Edith Desideria Imthurn

Date Deposited:

08 Feb 2021 11:50

Last Modified:

07 Apr 2021 08:39

Publisher DOI:

10.23736/s0022-4707.20.10814-4

Uncontrolled Keywords:

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

BORIS DOI:

10.48350/151957

URI:

https://boris.unibe.ch/id/eprint/151957

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