scholarly journals Effect of Acute Heart Rate Variability Biofeedback on H-reflex Modulation: A Pilot Study

2021 ◽  
Vol 76 (1) ◽  
pp. 83-88
Author(s):  
Jeffrey Cayaban Pagaduan ◽  
Sam Shi Xuan Wu ◽  
James William Fell ◽  
Yung-Sheng Chen
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Motor Neurons ◽  
H Reflex ◽  
Reflex Modulation ◽  
Single Session ◽  
Heart Rate Variability Biofeedback ◽  
Normal Breathing ◽  
Afferent Activation ◽  
Hoffman Reflex

Abstract Heart rate variability biofeedback (HRV BFB) is paced breathing scheme that stimulates resonance in the cardiovascular system. This study aimed to investigate the effect of a single-session HRV BFB on Hoffman reflex (H-reflex) of the soleus muscle. Twelve healthy males (height: 173.7 ± 7.18 cm; weight: 72.7 ± 17.7 kg; age: 24.0 ± 5.02 yrs) completed a randomized-crossover intervention involving a 10-minute HRV BFB and normal breathing (CON) separated by 48 hours. Results revealed significantly lower 1a afferent activation after HRV BFB. Similarly, the HRV BFB also demonstrated lower proportion of activated motor neurons from 1a afferents. In conclusion, an acute HRV BFB influenced the reduction in motoneuron excitability at resting condition.

scholarly journals Acute Effects of Heart Rate Variability Biofeedback on H-reflex and Maximal Voluntary Isometric Strength

2020 ◽  
Author(s):  
Jeffrey Pagaduan ◽  
Sam SX Wu ◽  
James W. Fell ◽  
Yung-Sheng Chen
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Soleus Muscle ◽  
Repeated Measures ◽  
H Reflex ◽  
Visually Guided ◽  
Plantar Flexors ◽  
Maximal Voluntary Isometric Contraction ◽  
Heart Rate Variability Biofeedback ◽  
Significant Difference

Abstract Background Heart rate variability biofeedback (HRV BFB) is a visually-guided paced breathing scheme that stimulates resonance in the cardiovascular system. Up to date, the influence of HRV BFB on neuromuscular function remains unknown. The purpose of this study was to investigate the effects of a single-session HRV BFB on Hoffman reflex (H-reflex) of the soleus muscle and maximal voluntary isometric contraction (MVC) of plantar flexors. Methods Eleven male healthy participants (height: 173.6 ± 7.5 cm; weight: 74.5 ± 17.3 kg; age: 24.6 ± 4.8 yrs) volunteered to undergo a randomized-crossover intervention involving a 10-minute HRV BFB and normal breathing (CON), separated by 48-hours. Pre and post indices for H-reflex, and post-only MVC in HRV BFB were evaluated using two-way repeated measures ANOVA and independent T-test respectively. Results No significant differences in H-reflex markers between HRV BFB and CON were found. Both groups posted non-significant difference in MVC. Conclusion An acute HRV BFB was not sufficient in eliciting significant changes in motoneuron excitability of the soleus muscle and maximal muscle strength of plantar flexors.

A preliminary systematic review and meta-analysis on the effects of heart rate variability biofeedback on heart rate variability and respiration of athletes

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jeffrey Cayaban Pagaduan ◽  
Yung-Sheng Chen ◽  
James William Fell ◽  
Sam Shi Xuan Wu
Keyword(s):  
Systematic Review ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Web Of Science ◽  
Meta Analysis ◽  
Academic Research ◽  
Experimental Studies ◽  
Quantitative Review ◽  
Heart Rate Variability Biofeedback ◽  
Randomized Control

Abstract To date, there is no quantitative review examining the influence of heart rate variability biofeedback (HRV BFB) on the athlete population. Such an undertaking may provide valuable information on the autonomic and respiration responses of athletes when performing HRV BFB. Thus, purpose of this preliminary systematic review and meta-analysis on the effects of HRV BFB on HRV and respiration of athletes. Searches of Springerlink, SportDiscus, Web of Science, PROQUEST Academic Research Library, Google Scholar, and ScienceDirect were conducted for studies that met the following criteria: (1) experimental studies involving athletes that underwent randomized control trial; (2) availability of HRV BFB as a treatment compared with a control (CON)/placebo (PLA); (3) any pre and post HRV variable and/or breathing frequency as dependent variable/s; and, (4) peer-reviewed articles written in English. Four out of 660 studies involving 115 athletes (25 females and 90 males) ages 16–30 years old were assessed in this review. Preliminary findings suggest the promising ability of HRV BFB to improve respiratory mechanics in athlete population. More work is needed to determine the autonomic modulatory effect of HRV BFB in athletes.

Heart Rate Variability Biofeedback in Grandmothers Raising Grandchildren: Effects on Stress, Emotions, and Cognitions

Biofeedback ◽  
2013 ◽  
Vol 41 (3) ◽  
pp. 144-149 ◽  
Author(s):  
Jaclene A. Zauszniewski ◽  
Tsay-Yi Au ◽  
Carol M. Musil
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Perceived Stress ◽  
Repeated Measures ◽  
Negative Emotions ◽  
Pilot Trial ◽  
Heart Rate Variability Biofeedback ◽  
Grandmothers Raising Grandchildren ◽  
Depressive Cognitions ◽  
Reducing Stress

Over one million American grandmothers raise grandchildren, and many experience stress that may be alleviated by biofeedback. This pilot trial of 20 grandmothers used a pretest-posttest design with repeated measures to test the effects of heart rate variability (HRV) biofeedback on perceived stress, negative emotions, and depressive cognitions. Significant decreases in stress, negative emotions, and depressive cognitions were found. Biofeedback is thus potentially effective for reducing stress and depressive thoughts and feelings in grandmothers raising grandchildren, and the intervention warrants further testing.

HRV Biofeedback and Addiction: Rehabbing Body, Mind and Spirit

Biofeedback ◽  
2021 ◽  
Vol 49 (1) ◽  
pp. 10-17
Author(s):  
Amy Hudson
Keyword(s):  
Heart Rate ◽  
Chronic Pain ◽  
Heart Rate Variability ◽  
The Body ◽  
Heart Rate Variability Biofeedback ◽  
The Mind

Addiction is a devastating disease of the body, the mind, and even the personality. Recent research shows that heart rate variability biofeedback can help the alcoholic/addict recover in three crucial ways, namely (1) treating the associated comorbidities (depression, anxiety, chronic pain), (2) treating the physiology around craving, and (3) returning to a loving and nurturing relationship with one's own body instead of an abusive and exploitive one.

Comparative study on effect of neutral spinal bath and neutral spinal spray on blood pressure, heart rate and heart rate variability in healthy volunteers

2018 ◽  
Vol 16 (2) ◽  
Author(s):  
Arundhati Goley ◽  
A. Mooventhan ◽  
NK. Manjunath
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Volunteers ◽  
Group Analysis ◽  
Low Frequency ◽  
Single Session ◽  
Arterial Blood ◽  
Before And After ◽  
Instantaneous Heart Rate

Abstract Background Hydrotherapeutic applications to the head and spine have shown to improve cardiovascular and autonomic functions. There is lack of study reporting the effect of either neutral spinal bath (NSB) or neutral spinal spray (NSS). Hence, the present study was conducted to evaluate and compare the effects of both NSB and NSS in healthy volunteers. Methods Thirty healthy subjects were recruited and randomized into either neutral spinal bath group (NSBG) or neutral spinal spray group (NSSG). A single session of NSB, NSS was given for 15 min to the NSBG and NSSG, respectively. Assessments were taken before and after the interventions. Results Results of this study showed a significant reduction in low-frequency (LF) to high-frequency (HF) (LF/HF) ratio of heart rate variability (HRV) spectrum in NSBG compared with NSSG (p=0.026). Within-group analysis of both NSBG and NSSG showed a significant increase in the mean of the intervals between adjacent QRS complexes or the instantaneous heart rate (HR) (RRI) (p=0.002; p=0.009, respectively), along with a significant reduction in HR (p=0.002; p=0.004, respectively). But, a significant reduction in systolic blood pressure (SBP) (p=0.037) and pulse pressure (PP) (p=0.017) was observed in NSSG, while a significant reduction in diastolic blood pressure (DBP) (p=0.008), mean arterial blood pressure (MAP) (p=0.008) and LF/HF ratio (p=0.041) was observed in NSBG. Conclusion Results of the study suggest that 15 min of both NSB and NSS might be effective in reducing HR and improving HRV. However, NSS is particularly effective in reducing SBP and PP, while NSB is particularly effective in reducing DBP and MAP along with improving sympathovagal balance in healthy volunteers.

The Promise of Heart Rate Variability Biofeedback: Evidence-Based Applications

Biofeedback ◽  
2013 ◽  
Vol 41 (3) ◽  
pp. 110-120 ◽  
Author(s):  
Richard Gevirtz
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Empirical Evidence ◽  
Point Of View ◽  
Evidence Based ◽  
Multiple Sources ◽  
Heart Rate Variability Biofeedback

Heart rate variability biofeedback has enjoyed increased popularity in recent years. In this review, empirical evidence from multiple sources is presented from the point of view of possible mechanisms of effect. While more research is clearly needed, the data thus far are certainly promising.

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