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Impact of functional training on geometric indices and fractal correlation property of heart rate variability in postmenopausal women

2017; Wiley; Volume: 23; Issue: 1 Linguagem: Inglês

10.1111/anec.12469

1542-474X

Marianne Penachini da Costa de Rezende Barbosa, Luiz Carlos Marques Vanderlei, Lucas Melo Neves, Carolina Takahashi, Paula R. dos S. Torquato, Ana Cláudia de Souza Fortaleza, Ismael Forte Freitas Júnior, Isabel Cristina Espósito Sorpreso, Luíz Carlos de Abreu, Andrés Ricardo Pérez‐Riera,

Non-Invasive Vital Sign Monitoring

Background To evaluate the influence of functional training on the geometric indices of heart rate variability ( HRV ) and fractal correlation properties of the dynamics of heart rate in menopausal women. Methods Of 39 women who were in the period of menopause for more than a year and who did not practice any regular physical activity were divided into: Functional training group ( FTG = 50 ± 4.5 years; 67.64 ± 11.64 kg; 1.5 ± 0.05 m) that executed the functional training ( FT ) and all proposals by reviews and the Control group (58.45 ± 4.8 years; 66.91 ± 13.24 kg; 1.55 ± 0.05 m) who performed all assessments but not FT . The training consisted of 18 weeks (three times a week) and the volunteers performed three sets of 11 functional exercises followed by a walk in each of the sessions. The autonomic nervous system modulation was evaluated by analysis of HRV and the indices obtained were: RR intervals, RRTRI , TINN , SD 1, SD 2, SD 1/ SD 2, qualitative analysis of Poincaré plot and DFA (alfa‐1, alfa‐2 and alfa‐1/alfa‐2). The Student's t ‐test for unpaired samples (normal data) or Mann‐Whitney test nonnormal data) were used to compare the differences obtained between the final moment and the initial moment of the studied groups ( p < .05). Conclusion Were observed in the FTG : increased SD 1 ( CG 0.13 ± 4.00 vs. 3.60 ± 8.43), beat‐to‐beat global dispersion much greater as an increased in the dispersion of long‐term RR intervals and increased fractal properties of short‐term (α1) ( CG −0.04 ± 0.13 vs. 0.07 ± 0.21). FT promoted a beneficial impact on cardiac autonomic modulation, characterized by increased parasympathetic activity and short‐term fractal properties of the dynamics of the heart rate .