Chronotropic Response and Heart Rate Variability before and after a 160 m Walking Test in Young, Middle-Aged, Frail, and Non-Frail Older Adults

The frailty syndrome is characterized by a decreased capacity to adequately respond to stressors. One of the most impaired physiological systems is the autonomous nervous system, which can be assessed through heart rate (HR) variability (HRV) analysis. In this article, we studied the chronotropic response (HR and HRV) to a walking test. We also analyzed HRV indices in rest as potential biomarkers of frailty. For this, a 160 m-walking test and two standing rest tests (before and after the walking) were performed by young (19−29 years old, n = 21, 57% women), middle-aged (30−59 years old, n = 16, 62% women), and frail older adults (>60 years old, n = 28, 40% women) and non-frail older adults (>60 years old, n = 15, 71% women), classified with the FRAIL scale and the Clinical Frailty Scale (CFS). Frequency domain parameters better allowed to distinguish between frail and non-frail older adults (low-frequency power LF, high-frequency power HF (nu), LF/HF ratio, and ECG-derived respiration rate EDR). Frail older adults showed an increased HF (nu) and EDR and a reduced LF (nu) and LF/HF compared to non-frail older adults. The increase in HF (nu) could be due to a higher breathing effort. Our results showed that a walk of 160 m is a sufficient cardiovascular stressor to exhibit an attenuated autonomic response in frail older adults. Several HRV indices showed to be potential biomarkers of frailty, being LF (nu) and the time required to reach the maximum HR the best candidates.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:19

Enthalten in:

International journal of environmental research and public health - 19(2022), 14 vom: 09. Juli

Sprache:

Englisch

Beteiligte Personen:

Álvarez-Millán, Lesli [VerfasserIn]
Lerma, Claudia [VerfasserIn]
Castillo-Castillo, Daniel [VerfasserIn]
Quispe-Siccha, Rosa M [VerfasserIn]
Pérez-Pacheco, Argelia [VerfasserIn]
Rivera-Sánchez, Jesús [VerfasserIn]
Fossion, Ruben [VerfasserIn]

Links:

Volltext

Themen:

Autonomic response
Early biomarkers
Heart rate dynamics
Journal Article
Orthostatic stressor
Research Support, Non-U.S. Gov't
Stimulus-response paradigm

Anmerkungen:

Date Completed 28.07.2022

Date Revised 08.03.2023

published: Electronic

Citation Status MEDLINE

doi:

10.3390/ijerph19148413

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM34406056X