Is post-exercise hypotension a method-dependent phenomenon in chronic stroke? A crossover randomized controlled trial.

Autor: Fonseca GF; Laboratory of Physical Activity and Health Promotion, Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil., Michalski AC; Laboratory of Physical Activity and Health Promotion, Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil., Ferreira AS; Graduate Program in Rehabilitation Sciences, Augusto Motta University Center, Rio de Janeiro, Brazil., Costa VAB; Laboratory of Physical Activity and Health Promotion, Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil., Massaferri R; Graduate Program in Operational Human Performance, Air Force University, Rio de Janeiro, Brazil., Farinatti P; Laboratory of Physical Activity and Health Promotion, Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil., Cunha FA; Laboratory of Physical Activity and Health Promotion, Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil.
Jazyk: angličtina
Zdroj: Clinical physiology and functional imaging [Clin Physiol Funct Imaging] 2023 Jan 16. Date of Electronic Publication: 2023 Jan 16.
DOI: 10.1111/cpf.12812
Abstrakt: Background: This study assessed the reproducibility of post-exercise hypotension (PEH) detection after two bouts of mixed circuit training (MCT) using three approaches that accounts the pre-exercise values and/or a control session (CTL) to calculate PEH [i.e. ( A 1 = post - exercise - pre - exercise ); ( A 2 = post - exercise - post - CTL ) ; A 3 = ( post - exercise - pre - exercise ) - ( post - CTL - pre - CTL ) ] in chronic stroke (i.e., ≥ 6 months post-stroke). The proportion of PEH responders determined using different cut-off values for PEH was also compared (4 mmHg vs. minimal detectable difference).
Methods: Seven participants (age: 56 ± 12 years; time post-stroke: 91 ± 55 months) performed two bouts of MCT and a CTL. The MCT involved 10 exercises with 3 sets of 15-repetition maximum, with each set interspersed with 45s of walking. The systolic (SBP) and diastolic (DBP) blood pressures were assessed 10-min before and every 10-min along 40-min after CTL and MCT.
Results: The two-way random intraclass correlation coefficient for single measurements (ICC 2,1 ) ranges for SBP were: A 1 : 0.580-0.829, A 2 : 0.937-0.994, A 3 : 0.278-0.774; for DBP: A 1 : 0.497-0.916, A 2 : 0.133-0.969, A 3 : 0.175-0.930. The proportion of PEH responders detected using 4 mmHg or the minimal detectable difference as cut-off values was not different in 97% of analyses (P>0.05), and higher when using 4 mmHg in 3% of analyses (P = 0.031). The standard error of measurement was ≥ 4 mmHg in 47% of analyses for SBP, and 40% for DBP.
Conclusions: The most reliable approach for determining PEH in chronic stroke was to subtract the post-exercise from the post-CTL values. The proportion of PEH responders was not affected by the cut-off values applied. This article is protected by copyright. All rights reserved.
(This article is protected by copyright. All rights reserved.)
Databáze: MEDLINE
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