Association between cardiac autonomic modulation and sedentary behavior in breast cancer survivors: a 12-month cohort study

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Data

2022-02-01

Autores

Palma, Mariana R. [UNESP]
Tebar, William R.
Vanderlei, Luiz Carlos M. [UNESP]
Fregonesi, Cristina E. P. T. [UNESP]
Ribeiro, Fernanda E. [UNESP]
Caldeira, Daniela T. [UNESP]
Ritti-Dias, Raphael M.
Christofaro, Diego G. D. [UNESP]

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Purpose: This study aimed to analyze the longitudinal influence of sitting time (ST) on cardiac autonomic modulation (CAM) and resting heart rate (RHR) in a 12-month cohort of 67 breast cancer survivors. Methods: CAM was assessed by heart rate variability with heart monitor which also assessed RHR, and ST was self-reported. The relationship between the variables was analyzed by the Pearson correlation and its magnitude by linear regression. Results: At baseline, no associations were found between ST and CAM or RHR. In the delta analyses, a decrease in RMSSD, SD1, and HF(ms2) was associated with sitting time. At 12-month follow-up, there was an increase in the ST and a decrease in RHR. ST was negatively related with CAM (RMSSD, PNN50, and SD1), but no association was observed between ST and RHR. Conclusion: The increase in ST was associated with worsening of CAM after 12-month follow-up. Promoting reduction in ST will be an important strategy against cardiovascular impairment in breast cancer survivors.

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Autonomic nervous system, Breast neoplasms, Heart rate, Sedentary lifestyle

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Supportive Care in Cancer, v. 30, n. 2, p. 1873-1878, 2022.