Heart rate variability and exercise in aging women

Reference:

Earnest, C. P., Blair, S. N. and Church, T. S., 2012. Heart rate variability and exercise in aging women. Journal of Women's Health, 21 (3), pp. 334-339.

Related documents:

Official URL:

http://dx.doi.org/10.1089/jwh.2011.2932

Related URLs:

• http://www.ncbi.nlm.nih.gov/pubmed/21967166 http://online.liebertpub.com/doi/pdfplus/10.1089/jwh.2011.2932

Abstract

Abstract Background: Our group has shown a positive dose-response in maximal cardiorespiratory exercise capacity (VO(2max)) and heart rate variability (HRV) to 6 months of exercise training but no improvement in VO(2max) for women >/=60 years. Here, we examine the HRV response to exercise training in postmenopausal women younger and older than 60 years. Methods: We examined 365 sedentary, overweight, hypertensive, postmenopausal women randomly assigned to sedentary control or exercise groups exercising at 50% (4 kcal/kg/week, [KKW]), 100% (8 KKW) and 150% (12 KKW) of the National Institutes of Health (NIH) Consensus Development Panel physical activity guidelines. Primary outcomes included time and frequency domain indices of HRV. Results: Overall, our analysis demonstrated a significant improvement in parasympathetic tone (rMSSD and high frequency power) for both age strata at 8 KKW and 12 KKW. For rMSSD, the age-stratified responses were: control,

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