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Mixed circuit training acutely reduces arterial stiffness in patients with chronic stroke: a crossover randomized controlled trial

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Abstract

Purpose

Investigate whether a single bout of mixed circuit training (MCT) can elicit changes in arterial stiffness in patients with chronic stroke. Second, to assess the between-day reproducibility of post-MCT arterial stiffness measurements.

Methods

Seven participants (58 ± 12 years) performed a non-exercise control session (CTL) and two bouts of MCT on separate days in a randomized counterbalanced order. The MCT involved 3 sets of 15 repetition maximum for 10 exercises, with each set separated by 45-s of walking. Brachial-radial pulse wave velocity (br-PWV), radial artery compliance (AC) and reflection index (RI1,2) were assessed 10 min before and 60 min after CTL and MCT. Ambulatory arterial stiffness index (AASI) was calculated from 24-h recovery ambulatory blood pressure monitoring.

Results

Compared to CTL, after 60 min of recovery from the 1st and 2nd bouts of MCT, lower values were observed for br-PWV (mean diff = − 3.9 and − 3.7 m/s, respectively, P < 0.01; ICC2,1 = 0.75) and RI1,2 (mean diff = − 16.1 and − 16.0%, respectively, P < 0.05; ICC2,1 = 0.83) concomitant with higher AC (mean diff = 1.2 and 1.0 × 10–6 cm5/dyna, respectively, P < 0.01; ICC2,1 = 0.40). The 24-h AASI was reduced after bouts of MCT vs. CTL (1st and 2nd bouts of MCT vs. CTL: mean diff = − 0.32 and − 0.29 units, respectively, P < 0.001; ICC2,1 = 0.64).

Conclusion

A single bout of MCT reduces arterial stiffness during laboratory (60 min) and ambulatory (24 h) recovery phases in patients with chronic stroke with moderate-to-high reproducibility.

Trial registration: Ensaiosclinicos.gov.br identifier RBR-5dn5zd.

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Abbreviations

AASI:

Ambulatory arterial stiffness index

AC:

Arterial compliance

AIx:

Augmentation index

AIx@75:

Heart rate-corrected augmentation index

BMI:

Body mass index

br-PWV:

Brachial-radial pulse wave velocity

CTL:

Non-exercise control session

DBP:

Diastolic blood pressure

ICC:

Intraclass correlation coefficient

MCT:

Mixed circuit training

RI1,2 :

Reflection index

RPE:

Rating of perceived exertion

SBP:

Systolic blood pressure

VO2 :

Oxygen uptake

VO2max :

Maximal oxygen uptake

%VO2R:

Percentage of oxygen uptake reserve

WRmax :

Maximal work rate

References

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Acknowledgements

We thank all our volunteers for their efforts in participating in this study. We also thank Paulo Couto for his excellent technical assistance with experiment procedures.

Funding

The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the Carlos Chagas Filho Foundation for the Research Support in Rio de Janeiro (FAPERJ, E-26/202.705/2019 and E-26/211.210/2021 [271104], recipient FAC; E-26/110.450/2012 recipient ASF), by the Brazilian Council for Technological and Scientific Development (CNPq, 403206/2021–9, recipient FAC), and by the Coordination for the Improvement of Higher Education Personnel (CAPES, Finance Code 001, recipient ASF).

Author information

Authors and Affiliations

Authors

Contributions

ACM and FAC were involved in the study conception, design and management, data interpretation and analysis, literature search, and drafting of the manuscript. ACM, GFF and VABC were involved in the recruitment of participants, data collection, and manuscript preparation. ASF, AWM, NSLS, JB, and SB provided considerable intellectual input in the writing of the manuscript. FAC was the principal investigator supervising all the experimental procedures and the manuscript preparation, as well as lab resources and financial support for the project. All authors read and approved the final version of this manuscript.

Corresponding author

Correspondence to Felipe A. Cunha.

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Conflict of interest

The authors have no conflict of interest that relates to the content of this article.

Additional information

Communicated by Fabio Fischetti.

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Michalski, A.C., Ferreira, A.S., Midgley, A.W. et al. Mixed circuit training acutely reduces arterial stiffness in patients with chronic stroke: a crossover randomized controlled trial. Eur J Appl Physiol 123, 121–134 (2023). https://doi.org/10.1007/s00421-022-05061-8

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  • DOI: https://doi.org/10.1007/s00421-022-05061-8

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