Multicomponent exercise training in cardiovascular complexity in prefrail older adults: a randomized blinded clinical pilot study

Multicomponent exercise training in cardiovascular complexity in prefrail older adults: a randomized blinded clinical pilot study

The aim of this study was to investigate the effects of multicomponent training on baroreflex sensitivity (BRS) and heart rate (HR) complexity of prefrail older adults. Twenty-one prefrail community-dwelling older adults were randomized and divided into multicomponent training intervention group (Mu...

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Bibliographic Details
Published in:Brazilian journal of medical and biological research Vol. 54; no. 6; p. e10794
Main Authors: Buto, M S S, Vassimon-Barroso, V, Fiogbé, E, Farche, A C S, Carnavale, B F, Rossi, P G, Sakaguchi, C A, Catai, A M, Takahashi, A C M
Format: Journal Article
Language:English
Published: Brazil Associacao Brasileira de Divulgacao Cientifica (ABDC) 01-01-2021
Revista Brasileira de Pesquisas Medicas
Associação Brasileira de Divulgação Científica
Subjects:
Aged
Aging
Baroreceptors
Baroreflex
BIOLOGY
Blood Pressure
Cardiovascular system
Complexity
Entropy
Exercise
Fitness training programs
Frailty
Heart beat
Heart Rate
Humans
MEDICINE, RESEARCH & EXPERIMENTAL
Older people
Physical exercise
Physical training
Pilot Projects
Posture
Reflexes
Physical exercise
Aging
Frailty
Baroreflex
Complexity
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Summary:The aim of this study was to investigate the effects of multicomponent training on baroreflex sensitivity (BRS) and heart rate (HR) complexity of prefrail older adults. Twenty-one prefrail community-dwelling older adults were randomized and divided into multicomponent training intervention group (MulTI) and control group (CG). MulTI performed multicomponent exercise training over 16 weeks and CG was oriented to follow their own daily activities. The RR interval (RRi) and blood pressure (BP) series were recorded for 15 min in supine and 15 min in orthostatic positions, and calculation of BRS (phase, coherence, and gain) and HR complexity (sample entropy) were performed. A linear mixed model was applied for group, assessments, and their interaction effects in supine position. The same test was used to assess the active postural maneuver and it was applied separately to each group considering assessments (baseline and post-intervention) and positions (supine and orthostatic). The significance level established was 5%. Cardiovascular control was impaired in prefrail older adults in supine position. Significant interactions were not observed between groups or assessments in terms of cardiovascular parameters. A 16-week multicomponent exercise training did not improve HR complexity or BRS in supine rest or in active postural maneuver in prefrail older adults.
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ISSN:0100-879X
1414-431X
1414-431X
1678-4510
DOI:10.1590/1414-431X202010794