Heart Rate Variability during 6-Min Walk Test in Adults Aged 40 Years and Older

Heart Rate Variability during 6-Min Walk Test in Adults Aged 40 Years and Older

Author Correa, Fernanda Rocha Autor UNIFESP Google Scholar
Alves, Mariana Agnes da Silva Autor UNIFESP Google Scholar
Bianchim, Mayara Silveira Autor UNIFESP Google Scholar
Aquino, Aline Crispim de Autor UNIFESP Google Scholar
Guerra, Ricardo Luís Fernandes Autor UNIFESP Google Scholar
Dourado, Victor Zuniga Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract We evaluated age-and sex-dependent differences in heart rate variability (HRV) during the 6-min walk test (6MWT) in healthy adults. We also evaluated the intensity of the 6MWT based on HRV. 78 participants aged 40-49, 50-59, 60-69, and >= 70 years (42 females; 36 men) performed the 6MWT. Heart rate and HRV were monitored 1 min at rest and during the last 2-min of the test. the root mean square (RMSSD), instantaneous beat-to-beat variability (SD1), and long-term standard deviation (SD2) of RR intervals were calculated. the SD1 < 3 ms at the end of the 6MWT was defined as high-intensity exercise. Despite the significantly higher peak values of heart rate observed for women, we did not find sex-and age-related differences in HRV during the 6MWT. the ROC curve identified percentage of maximum heart rate > 67 % as the best cut-point for prediction of high-intensity exercise with 94 % of sensitivity and 65 % of specificity (area under the curve = 0.804). We may conclude that autonomic modulation of heart rate during exercise was not dependent of age and sex. the HRV assessment during walking enables a valid estimation of exercise intensity in adults. We may therefore suggest the use of 6MWT for assessing exercise capacity and for prescribing exercises in adults aged 40 yrs and older.
Keywords Heart rate variability
Language English
Date 2013-02-01
Published in International Journal of Sports Medicine. Stuttgart: Georg Thieme Verlag Kg, v. 34, n. 2, p. 111-115, 2013.
ISSN 0172-4622 (Sherpa/Romeo, impact factor)
Publisher Georg Thieme Verlag Kg
Extent 111-115
Origin https://dx.doi.org/10.1055/s-0032-1321888
Access rights Closed access
Type Article
Web of Science ID WOS:000313908300003
URI https://repositorio.unifesp.br/handle/11600/35952

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