Heart rate recovery as an assessment of cardiorespiratory fitness in young adults.

Autor: Thomas JM; Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky, USA.; Center for Clinical and Translational Science, University of Kentucky, Lexington, Kentucky, USA., Black WS; Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky, USA.; Department of Clinical Sciences, University of Kentucky, Lexington, Kentucky, USA., Kern PA; Center for Clinical and Translational Science, University of Kentucky, Lexington, Kentucky, USA.; The Department of Internal Medicine, Division of Endocrinology, University of Kentucky, Lexington, Kentucky, USA.; Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, Kentucky, USA., Pendergast JS; Center for Clinical and Translational Science, University of Kentucky, Lexington, Kentucky, USA.; Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, Kentucky, USA.; Saha Cardiovascular Center, University of Kentucky, Lexington, Kentucky, USA.; Department of Biology, University of Kentucky, Lexington, Kentucky, USA., Clasey JL; Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky, USA.; Center for Clinical and Translational Science, University of Kentucky, Lexington, Kentucky, USA.; Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, Kentucky, USA.
Jazyk: angličtina
Zdroj: Journal of clinical exercise physiology [J Clin Exerc Physiol] 2022 Jun; Vol. 11 (2), pp. 44-53. Date of Electronic Publication: 2022 May 19.
DOI: 10.31189/2165-6193-11.2.44
Abstrakt: Background: Cardiorespiratory fitness, typically measured as peak oxygen uptake (VO 2peak ) during maximal graded exercise testing (GXT max ), is a predictor of morbidity, mortality, and cardiovascular disease. However, measuring VO 2peak is costly and inconvenient and thus not widely used in clinical settings. Alternatively, postexercise heart rate recovery (HRRec), which is an index of vagal reactivation, is a valuable assessment of VO 2peak in older adults and athletes. However, the validity of HRRec as a clinical indicator of cardiorespiratory fitness in young, sedentary adults, who are a rapidly growing population at risk for developing obesity and cardiovascular disease, has not been fully elucidated.
Methods: We investigated the association between cardiorespiratory fitness, measured by VO 2peak (mL·kg -1 ·min -1 ), and HRRec measures after a GXT max in 61 young (25.2 ± 6.1 years), sedentary adults (40 females) using 3 methods. We examined the relationship between VO 2peak and absolute (b·min -1 ) and relative (%) HRRec measures at 1, 2, and 3 min post GXT max , as well as a measure of the slow component HRRec (HRRec 1 min minus HRR 2 min), using Pearson's correlation analysis.
Results: VO 2peak (36.5 ± 7.9 mL·kg -1 ·min -1 ) was not significantly correlated with absolute HRRec at 1 min ( r = 0.18), 2 min ( r = 0.04) or 3 min ( r = 0.01). We also found no significant correlations between VO 2peak and relative HRRec at 1 min ( r = 0.09), 2 min ( r = -0.06) or 3 min ( r = -0.10). Lastly, we found no correlation between the measure of the slow component HRRec and VO 2peak ( r = -0.14).
Conclusions: Our results indicate that HRRec measures are not a valid indicator of cardiorespiratory fitness in young, sedentary adults.
Competing Interests: No conflicts of interest
Databáze: MEDLINE
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