Key result
Elderly stroke patients exhibited altered cardiac autonomic modulation during and after aerobic exercise compared to healthy controls, including higher HF (p<0.001) and lower LF/HF ratio (p=0.007).
Why the study?
Aerobic exercise is recommended for stroke rehabilitation and improves heart rate variability, but cardiac autonomic modulation during and after acute aerobic exercise in elderly stroke patients compared with healthy controls required evaluation.
Does an acute bout of aerobic exercise alter cardiac autonomic modulation differently in elderly stroke patients compared to healthy elderly people?
Cross-Sectional (n=60)
Does an acute bout of aerobic exercise alter cardiac autonomic modulation differently in elderly stroke patients compared to healthy elderly people?
Elderly stroke patients exhibit altered cardiac autonomic modulation during and after acute aerobic exercise compared to healthy controls, highlighting the need for tailored rehabilitation monitoring.
Answers are grounded in this paper and cite their sources.
Hypothesis-generating for exercise responses in stroke survivors; leaves open optimal autonomic rehabilitation protocols.
Background and purpose: The development of public policies must be guided by full knowledge of the health–disease process of the population. Aerobic exercises are recommended for rehabilitation in stroke patients, and have been shown to improve heart rate variability (HRV). Our aim was to compare the cardiac autonomic modulation of elderly stroke patients with that of healthy elderly people during and after an acute bout of aerobic exercise. Methods: A total of 60 elderly people participated in the study (30 in the control group, mean age of 67 ± 4 years; 30 in the stroke group, mean age of 69 ± 3 years). HRV was analyzed in rest—10 min of rest in supine position; exercise—the 30 min of peak exercise; and recovery—30 min in supine position post-exercise. Results: Taking rest and exercises together, for SDNN, RMSSD, pNN50, RRTri, and TINN, there was no difference between the stroke and control groups (p = 0.062; p = 0.601; p = 0.166; p = 0.224, and p = 0.059, respectively). The HF (ms2) was higher and the LF/HF ratio was lower for the stroke group than the control group (p < 0.001 and p = 0.007, respectively). The SD2 was lower for the stroke group than for the control group (p = 0.041). Conclusion: Stroke patients present reduced variability at rest, sympathetic predominance during exercise, and do not return to baseline after the 30 min of recovery, with similar responses found in the healthy elderly group.
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Raimundo et al. (2021) conducted a cross-sectional in Stroke (n=60). Prior stroke vs. Healthy elderly controls was evaluated on Heart rate variability (HRV) parameters including HF, LF/HF ratio, and SD2 (p=<0.001). Elderly stroke patients exhibited altered cardiac autonomic modulation during and after aerobic exercise compared to healthy controls, including higher HF (p<0.001) and lower LF/HF ratio (p=0.007).
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