Key result
Controlled hypertension does not impair post-exercise heart rate variability in active older adults.
Why the study?
Advancing age reduces heart rate variability and baroreceptor function, but autonomic modulation of heart rate during and after aerobic exercise in hypertensive versus non-diseased elderly individuals required analysis.
Does controlled hypertension impair autonomic modulation of heart rate during and after aerobic exercise in physically active older adults?
Cohort (n=84)
Non-randomized
No
Does controlled hypertension impair autonomic modulation of heart rate during and after aerobic exercise in physically active older adults?
Absolute Event Rate: 845% vs 787%
p-value: p=0.021
Active elderly individuals with controlled hypertension exhibit similar heart rate variability and autonomic recovery following aerobic exercise as healthy normotensive controls.
Similar autonomic recovery after aerobic exercise in active older adults with controlled hypertension; leaves open generalizability to sedentary or uncontrolled populations.
Background: High blood pressure is an important public health problem due to its high prevalence, the difficulty to control it, and its high contribution to morbidity. A series of changes may be linked to the aging process, compromising cardiac conduction, and reducing cardiovascular baroreceptor function. Advancing age promotes a decline in heart rate variability and this decrease can increase the probability of cardiovascular disease. The aim of this study was to analyze the autonomic modulation of heart rate in hypertensive elderly individuals during and after a session of aerobic exercise, and to compare it with elderly individuals without cardiovascular or metabolic disease. Our study was a non-randomized controlled study with hypertensive elderly (HBP group) and elderly without cardiovascular and/or metabolic diseases (control group). Data on blood pressure and heart rate variability (HRV) were collected before, during, and after 30 min of aerobic physical exercise on a treadmill. There was a reduction in HF (ms2) and SD1 (ms) in the 5 min of recovery for the elderly in the control group. The elderly in the control group also had greater RMSSD and SD1 30 min post-exercise when compared to the initial mins of recovery. We concluded that there was no difference in autonomic modulation and global heart rate variability between elderly individuals without cardiovascular and metabolic diseases and hypertensive individuals after a bout of aerobic exercise. Elderly individuals without metabolic diseases showed a decrease in parasympathetic modulation and global variability between the time of rest and 5 min of recovery. However, up to 30 min of post-exercise recovery, they restored parasympathetic activity.
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Andrade et al. (2023) conducted a cohort in High blood pressure (n=84). Controlled hypertension vs. No cardiovascular or metabolic diseases was evaluated on Mean RR interval (global heart rate variability) (p=0.021). Controlled hypertension did not significantly impair autonomic modulation and global heart rate variability compared to healthy controls in physically active older adults after a bout of aerobic exercise.
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