Effects of high-intensity interval training on the vascular and autonomic components of the baroreflex at rest in adolescents
Oliveira, RS; Barker, AR; Kranen, SH; et al.Debras, F; Williams, CA
Date: 26 July 2021
Journal
Pediatric Exercise Science
Publisher
Human Kinetics
Publisher DOI
Abstract
Purpose: In a sample of healthy adolescents, we aimed to investigate the effects of high intensity
interval exercise (HIIE) training and detraining on baroreflex sensitivity (BRS) and its vascular and
autonomic components at rest Methods: Nineteen volunteers were randomly allocated to: 1) four weeks
HIIE training performed three ...
Purpose: In a sample of healthy adolescents, we aimed to investigate the effects of high intensity
interval exercise (HIIE) training and detraining on baroreflex sensitivity (BRS) and its vascular and
autonomic components at rest Methods: Nineteen volunteers were randomly allocated to: 1) four weeks
HIIE training performed three times per week; or 2) a control (CON) condition with no intervention for
the same duration as HIIE training. PRE, POST and following two weeks of detraining (DET) resting
supine heart rate and blood pressure were measured and a cross-spectral method (LFgain) was used to
determine BRS gain. Arterial compliance (AC) was assessed as the BRS vascular component. LFgain
divided by AC (LFgain/AC) was used as the autonomic determinant of BRS. Results: HIIE training
was completed with 100% compliance. HIIE did not change resting LFgain (P=0.66; effect size
(ES)=0.21), AC (P=0.44; ES=0.36) or LFgain/AC (P=0.68; ES=0.19) compared to CON. Conclusion:
Four weeks of HIIE training does not change BRS and its autonomic and vascular determinant in a
sample of healthy adolescents at rest.
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