Effects of individualized resistance training prescription with heart rate variability on muscle strength, muscle size and functional performance in older women

Effects of individualized resistance training prescription with heart rate variability on muscle strength, muscle size and functional performance in older women

IntroductionThis study aimed to investigate whether individualizing autonomic recovery periods between resistance training (RT) sessions (IND) using heart rate variability (HRV), measured by the root mean square of successive R-R interval differences (RMSSD), would lead to greater and more consisten...

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Main Authors: Diego Bittencourt, Ramon Martins de Oliveira, Deivid Gomes da Silva, João Guilherme Almeida Bergamasco, Marcelo de Castro Cesar, Daniela Godoi Jacomassi, Júlio Benvenutti Bueno de Camargo, J. Derek Kingsley, Cleiton Augusto Libardi
Format: Article
Language:English
Published: Frontiers Media S.A. 2024-12-01
Series:Frontiers in Physiology
Subjects:
autonomic nervous system
elderly
functionality
muscle hypertrophy
recovery
Online Access:https://www.frontiersin.org/articles/10.3389/fphys.2024.1472702/full
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Summary:IntroductionThis study aimed to investigate whether individualizing autonomic recovery periods between resistance training (RT) sessions (IND) using heart rate variability (HRV), measured by the root mean square of successive R-R interval differences (RMSSD), would lead to greater and more consistent improvements in muscle strength, muscle mass, and functional performance in older women compared to a fixed recovery protocol (FIX).MethodsTwenty-one older women (age 66.0 ± 5.0 years old) were randomized into two different protocols (IND: n = 11; FIX: n = 10) and completed 7 weeks of RT. Measurements of RMSSD were performed within a five-day period to establish baseline values. The RMSSD values determined whether participants were recovered from the previous session. The assessments included muscle cross-sectional area (CSA), one-repetition maximum (1RM), peak torque (PT), rate of force development (RFD), chair stand (CS), timed up and go (TUG), 6-minutes walking (6MW), and maximum gait speed (MGS).ResultsThere were no significant (P > 0.05) group vs. time interactions. There were significant main effects of time (P < 0.05) for CSA, 1RM, PT, TUG, CS, 6MW, and MGS, while no significant changes were observed for RFD (P > 0.05).ConclusionIND does not seem to enhance responses in muscle mass, strength, and functional performance compared FIX in healthy older women.
ISSN:1664-042X

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