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Revista Finlay
versão On-line ISSN 2221-2434
Resumo
FUENTES BARRIA, Héctor et al. High-intensity Interval Training does not Improve Autonomic Balance in COVID-19 Quarantines. Rev. Finlay [online]. 2021, vol.11, n.3, pp. 265-271. Epub 30-Set-2021. ISSN 2221-2434.
Background:
the COVID-19 pandemic has forced the establishment of mobility restrictions and confinements, the impact of which has generated a drastic decrease in the time spent practicing physical activity, which favors inactivity, sedentary lifestyle, in addition to the risk of suffering chronic noncommunicable diseases.
Objective:
to analyze the effects of a remotely directed 4-week high-density interval training program on heart rate variability in young adult men confined by COVID-19.
Methods:
a descriptive, cross-sectional and comparative study was carried out in which 8 adult men evaluated according to body mass index, a method for evaluating the intensity of physical activity carried out and the Pittsburgh Sleep Quality Index, previous intervention participated. A 30:30 high-density interval training program was developed for 4 weeks, with a frequency of 2 times a week for a period of 5 min duration. Low-frequency and high-frequency cardiac variability, the relationship between the two, and the standard deviation of the instantaneous variation of the RR intervals (SD1) were recorded.
Results:
significant pre and post evaluation mean changes were reported in low frequency (p = 0.009; d = 0.18), high frequency (p = 0.009; d = 0.18) and SD1 (p = 0.007; d = 0, 18), while no significant changes were reported in their relationship (p = 0.113; d = 0.16).
Conclusion:
4 weeks of completion of a high-density interval training program do not generate acute adaptations on autonomic balance, the mean descriptive values reported being a possible chronic predictor of sedentary lifestyle caused by COVID-19 quarantines.
Palavras-chave : high-intensivity internal training; exercise; social isolation; sedentary behavior.