scholarly journals Influence of Age and Moderate-Intensity Exercise Training on Heart Rate Variability in Young and Mature Adults

2003 ◽  
Vol 28 (3) ◽  
pp. 446-461 ◽  
Author(s):  
Anthony S. Leicht ◽  
Graham D. Allen ◽  
Andrew J. Hoey
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Low Frequency ◽  
Aerobic Exercise Training ◽  
Moderate Intensity ◽  
Moderate Intensity Exercise ◽  
Mature Adults ◽  
Vagal Modulation

The purpose of this study was to examine the influence of age and moderate-intensity exercise training on heart rate variability (HRV), and to elucidate further the mechanism of training-induced bradycardia and cardioprotection. Electrocardiograms were recorded from 12 young (18-24 yrs) and 12 mature (29-43 yrs) individuals during supine rest and submaximal moderate exercise. Recordings were obtained prior to, midway, and following 16 weeks of aerobic exercise training designed to improve cardiorespiratory fitness and health. Training resulted in augmented estimated [Formula: see text] and bradycardia during rest and submaximal exercise. Total and low frequency components of HRV during exercise were significantly increased for the mature subjects following training whereas other measures of HRV were not significantly changed for either group. It was concluded that training of moderate intensity was insufficient to induce changes in the autonomic control of heart rate for young to mature subjects. The lack of significant HRV changes may suggest the existence of a vagal critical point, below which training-induced increases in vagal modulation may be forthcoming, and above which changes in vagal modulation may be negligible. Training-induced bradycardia and the cardioprotective effect of regular aerobic exercise may result from factors other than an increased vagal modulation. Key words: physical activity, ageing, autonomic nervous system, bradycardia, spectral analysis

Eight weeks of moderate-intensity exercise training increases heart rate variability in sedentary postmenopausal women

2004 ◽  
Vol 147 (5) ◽  
pp. e8-e15 ◽  
Author(s):  
Radim Jurca ◽  
Timothy S Church ◽  
Gina M Morss ◽  
Alexander N Jordan ◽  
Conrad P Earnest
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Exercise Training ◽  
Postmenopausal Women ◽  
Moderate Intensity ◽  
Moderate Intensity Exercise

Aerobic Exercise Training and Cardiorespiratory Fitness in Older Adults: A Randomized Control Trial

1999 ◽  
Vol 7 (4) ◽  
pp. 374-383 ◽  
Author(s):  
Richard A. Boileau ◽  
Edward McAuley ◽  
Demetra Demetriou ◽  
Naveen K. Devabhaktuni ◽  
Gregory L. Dykstra ◽  
...  
Keyword(s):  
Heart Rate ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Exercise Program ◽  
The Elderly ◽  
Aerobic Exercise Training ◽  
Moderate Intensity ◽  
Control Group ◽  
Before And After

A trial was conducted to examine the effect of moderate aerobic exercise training (AET) on cardiorespiratory (CR) fitness. Previously sedentary participants, age 60-75 years, were randomly assigned to either AET treatment or a control group for 6 months. The AET consisted of walking for 40 min three times/week at an intensity that elevated heart rate to 65% of maximum heart rate reserve. The control group performed a supervised stretching program for 40 min three times/week. CR fitness was assessed before and after the treatments during a grade-incremented treadmill walking test. Both absolute and relative peak V̇O2 significantly increased (p < .01) in the AET group, whereas they decreased modestly in the control group. Maximum treadmill time increased significantly (p < .01) in the AET group relative to the control group. These results indicate that CR fitness as measured by peak V̇O2 modestly improves in the elderly with a moderate-intensity, relatively long-term aerobic exercise program.

Impact of Moderate Exercise Training on Heart Rate Variability in Obese Adults

2021 ◽  
Vol 10 (1) ◽  
pp. 12-19
Author(s):  
Breanna L. Davidson ◽  
Kristen A. Byrne ◽  
Brittany L. Rood ◽  
Elizabeth S. Edwards ◽  
Jeremy D. Akers ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Exercise Training ◽  
High Frequency ◽  
Acute Exercise ◽  
Frequency Component ◽  
Aerobic Exercise Training ◽  
Moderate Intensity ◽  
Obese Adults ◽  
Postexercise Recovery

ABSTRACT Background: Exercise has been shown to improve heart rate variability (HRV) at rest in healthy subjects. HRV response during and immediately after acute exercise in obese individuals following aerobic exercise training has not been evaluated. The purpose of this study was to examine the effect of 12 weeks of moderate intensity aerobic exercise training on HRV during acute exercise and active postexercise recovery in obese individuals. Methods: Eleven obese individuals (5 men, 6 women; body mass index = 39.2 ± 6.3 kg·m−2] underwent 12 weeks of exercise training at 60% of predicted VO2max, determined via a submaximal treadmill test. Body composition was assessed with dual-energy x-ray absorptiometry. HRV was measured during the final minute in each exercise stage and in recovery and analyzed with Kubios HRV software. Results: Predicted VO2max (baseline: 28.2 ± 3.5 mL·kg−1·min−1 and posttraining: 27.4 mL·kg−1·min−1, P &gt; 0.05) was unchanged and body fat % decreased (46.2% ± 2.2 vs 45.5% ± 7.2, respectively). Initial stage heart rate and postexercise recovery heart rate was lower after training. The high frequency component was greater during the initial exercise stage after training. The low frequency component and the standard deviation of instantaneous beat-to-beat variability were greater during the final exercise stage after training. During cooldown, the root-mean-square of differences between adjacent RR intervals and high frequency normalized units were greater after training. Conclusion: HRV markers were improved during acute exercise stage and active recovery in obese individuals following 12 weeks of moderate intensity exercise training. These results suggest improvements in autonomic function can be seen with reductions in adiposity, independent of cardiorespiratory fitness changes in obese adults.

Impact of Aerobic Exercise Training on Heart Rate Variability and Functional Capacity in Obese Women After Gastric Bypass Surgery

2010 ◽  
Vol 21 (11) ◽  
pp. 1739-1749 ◽  
Author(s):  
Viviane Castello ◽  
Rodrigo Polaquini Simões ◽  
Daniela Bassi ◽  
Aparecida Maria Catai ◽  
Ross Arena ◽  
...  
Keyword(s):  
Heart Rate ◽  
Gastric Bypass ◽  
Heart Rate Variability ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Functional Capacity ◽  
Bypass Surgery ◽  
Gastric Bypass Surgery ◽  
Aerobic Exercise Training ◽  
Obese Women

Effects of high-intensity intervals and moderate-intensity exercise on baroreceptor sensitivity and heart rate variability during recovery

2020 ◽  
Vol 45 (10) ◽  
pp. 1156-1164
Author(s):  
Joel S. Burma ◽  
Paige V. Copeland ◽  
Alannah Macaulay ◽  
Omeet Khatra ◽  
Jonathan D. Smirl
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
High Intensity ◽  
Low Frequency ◽  
Moderate Intensity ◽  
Heart Rate Reserve ◽  
Baroreceptor Sensitivity ◽  
Moderate Intensity Exercise ◽  
The Time Domain ◽  
And Control

Numerous studies have examined heart rate variability (HRV) and cardiac baroreceptor sensitivity (BRS) variables during recovery both acutely (under 3 h) and long-term (24, 48, and 72 h) postexercise. However, there is little literature examining HRV and BRS measures between these timepoints. Spontaneous short-term HRV and cardiac BRS measures were collected in 9 participants before and at zero, 1, 2, 4, 6, and 8 h after 3 separate conditions: moderate-intensity continuous exercise (MICE; 45 min at 50% heart rate reserve), high-intensity interval exercise (HIIE; 25 min including ten 1-min intervals at 85% heart rate reserve), and control (30 min quiet rest). HRV measures in the time domain were only affected immediately following HIIE and MICE at hour zero (all p < 0.043), whereas frequency-domain metrics were unaltered (all p > 0.102). These measures were highly consistent across the control day (all p > 0.420). Cardiac BRS was assessed via low-frequency (LF) gain, and revealed reductions following HIIE at hour zero (p < 0.012). Cardiac BRS LF gain remained consistent following MICE and control interventions (all p > 0.280). The common practice of waiting 12 to 24 h is overly conservative as the current findings demonstrate measures return to baseline at ∼60 min after exercise. Moreover, these metrics demonstrated high levels of within- and between-day reliability. Novelty Previously a 12-h minimum restriction from exercise was required before participation in HRV/BRS studies. Recovery from moderate-intensity exercise for HRV and BRS metrics was <60 min; whereas, high-intensity intervals led to alterations for approximately 60 min. Spontaneous HRV and cardiac BRS demonstrated high levels of within-day reproducibility.

Influence of Intensive Cycling Training on Heart Rate Variability During Rest and Exercise

2003 ◽  
Vol 28 (6) ◽  
pp. 898-909 ◽  
Author(s):  
Anthony S. Leicht ◽  
Graham D. Allen ◽  
Andrew J. Hoey
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Exercise Training ◽  
Low Frequency ◽  
Total Power ◽  
Vagal Modulation ◽  
Relative Exercise Intensity ◽  
Before And After ◽  
Cycling Training ◽  
Key Words Exercise Training

The current study examined whether changes in heart rate variability (HRV) following intensive cycling training contribute to the mechanism of training-induced bradycardia. Thirteen healthy untrained subjects, ages 18-27 years, underwent recordings of heart rate (HR) and [Formula: see text] before and after 8 weeks of cycling, 25-60 min/day, 5 days/week at > 80% maximum HR (HRmax). Heart rate recordings were obtained during supine rest and submaximal exercise and were analysed for the following components of HRV: low frequency (LF, 0.041-0.15 Hz); high frequency (HF, 0.15-0.40 Hz); LF/HF ratio and total power (TP, 0-0.40 Hz). At posttraining, VO2max was significantly increased while HR was significantly reduced at rest and all absolute exercise work rates. Training-induced lower HR was accompanied by significantly greater HF and TP during rest as well as LF, HF, and TP during all absolute exercise work rates. Posttraining HR and the majority of HRV measures were similar to pretraining values at the same relative exercise intensity (% HRmax). These results indicated that 8 weeks of intensive cycling training increased HRV and cardiac vagal modulation during rest and absolute exercise work rates but had little effect during relative exercise work rates. Increased vagal modulation resulting from intensive exercise training may contribute to the mechanism of training-induced bradycardia. Key words: exercise training, autonomic nervous system, bradycardia, vagal modulation

Sign in / Sign up

Export Citation Format

Share Document