Effect of banana leaf bath (a type of heliotherapy) on short-term heart rate variability changes in healthy individuals: A pilot study

2019 ◽  
Author(s):  
M. Fathima-Jebin ◽  
A. Mooventhan ◽  
K. Maheshkumar ◽  
N. Manavalan
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Healthy Individuals ◽  
Short Term ◽  
Banana Leaf

scholarly journals Validity and reliability properties of canine short-term heart rate variability measures—a pilot study

2015 ◽  
Vol 10 (5) ◽  
pp. 384-390 ◽  
Author(s):  
Ann Essner ◽  
Rita Sjöström ◽  
Pia Gustås ◽  
Laurie Edge-Hughes ◽  
Lena Zetterberg ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Validity And Reliability ◽  
Short Term

scholarly journals Daily Food Insecurity and Heart Rate Variability Among Healthy Low-Income Adults: A Longitudinal Pilot Study Over Two Seasonal Months

2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 118-118
Author(s):  
Nan Dou ◽  
Muzi Na
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Food Insecurity ◽  
Frequency Domain ◽  
Low Income ◽  
Time Domain ◽  
Time Varying ◽  
Short Term ◽  
Stress Vulnerability

Abstract Objectives Food insecurity (FI) is prevalent among low-income adults and is related to increased stress. Heart rate variability (HRV) is associated with adverse health and a known indicator for stress vulnerability. However, the relationship between FI and HRV is unclear. Our study aims to study the associations between FI and ultra-short-term HRV (5 minutes) at daily basis. Methods A total of 22 healthy low-income adults were recruited in fall 2019 and 18 were followed up in winter 2020. Data on FI and HRV were collected over a 3-week-long wave in each surveyed month (2nd – 4th week). Daily FI was assessed using the adapted USDA adult module on the provided smartphones. Each day, a 5-minute heart rate was recorded using the Polar H7 sensor, yielding a number of HRV metrics in two domains. SDNN, Rmssd, and pNN50 are time-domain metrics quantifying the amount of variability in interbeat interval (the higher the ‘better’). LF/HF Ratio is a frequency-domain metrics estimating the distribution of power into frequency bands (the lower the ‘better’). The Time Varying Effect Models were used to estimate the association between daily FI and ultra-short-term HRV metrics as a function of study day. Results A total of 606 person-days (response rate = 72.1%) of data in FI and HRV was collected. In fall, higher FI score was significantly associated with lower lnRmssd at day 19 (b = −0.13) and 20 (b = −0.12), lower Pnn50 at day 20 (b = −0.13), and higher LF/HF ratio from day 1 to 5 (b ranges 0.29–0.88). In winter, higher FI score was related to lower lnRmssd at day 18 (b = −0.24) and 19 (b = −0.27), lower Pnn50 from day 17 to 19 (b ranges −10.99 to −7.79), and higher LF/HF ratio from day 9 to 11 (b ranges 0.78–1.22) and day 18 to 20 (b ranges 1.17–2.40). Conclusions Across the 2 months spanning two seasons, our pilot study found that daily FI was significantly and consistently associated with suboptimal time-domain HRV metrics in the last few days of the study months. Results for the frequency-domain also support a time-varying impact of FI on HRV. The preliminary results support a potential more profound impact of FI on stress vulnerability, particularly by the end of the months. Funding Sources The National Center for Advancing Translational Sciences, National Institutes of Health (UL1TR002014) and the Broadhurst Career Development Professorship for the Study of Health Promotion and Disease Prevention.

Short-term aerobic training improves heart rate variability in men living with HIV: a pre-post pilot study

2020 ◽  
Vol 21 (4) ◽  
pp. 99-104
Author(s):  
Candissa Silva da Silva ◽  
Luís Fernando Deresz ◽  
Giovana de Marchi Castelli ◽  
Gilson Pires Dorneles ◽  
Letícia Mignoni ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Aerobic Training ◽  
Short Term ◽  
Living With Hiv

scholarly journals Impaired circadian heart rate variability in Parkinson’s disease: a time-domain analysis in ambulatory setting

2020 ◽  
Author(s):  
Valentina Arnao ◽  
Antonio Cinturino ◽  
Sergio Mastrilli ◽  
Carmelo Buttà ◽  
Carlo Maida ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Heart Rate ◽  
Parkinson's Disease ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Healthy Individuals

Abstract Background Heart rate variability (HRV) decreases in Parkinson’s disease (PD) and it can be considered a marker for cardiovascular dysautonomia. The purpose of this pilot study is to evaluate long-term time-domain analysis of HRV of PD patients and compare the results with those of matched healthy individuals. Methods Idiopathic PD patients without comorbidity impairing HRV, and age-matched healthy individuals were recruited in a pilot study. A long-term time domain analysis of HRV using 24-hour ambulatory ECG was performed. Results Overall, 18 PD patients fulfilling inclusion criteria completed the evaluation (mean age was 55.6±8.8, disease duration: 5.0±4.7). Mean SCOPA-AUT score was 10.1±7.3. Patients were on Hoehn & Yahr stage 1-2 and mean Levodopa Equivalent Dose (LED) was 311±239.9. Mean of the 5-minute standard deviation (SD) of R-R intervals distribution (SDNN) for all 5 min segments of the entire recording (ISDNN) was significantly lower in patients compared to controls. ISDNN was significantly different between Parkinson’s disease patients and healthy controls. Conclusions In our population characterized by mild to moderate disease severity, time-domain assessment of HRV seemed to be a potential tool to characterize cardiovascular dysautonomia. Decrease of ISDNN in PD may reflect an autonomic derangement extending all day and night long.

scholarly journals Squeeze the beat: Enhancing cardiac vagal activation during resonance breathing via coherent pelvic floor recruitment. A Pilot Study.

2022 ◽  
Author(s):  
Josef Martin Tatschl ◽  
Andreas Schwerdtfeger
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Pelvic Floor ◽  
Treatment Outcomes ◽  
Clinical Effectiveness ◽  
Healthy Individuals ◽  
Concomitant Increase ◽  
Psychophysiological Assessment ◽  
And Performance

Resonance breathing (RB) has been shown to improve psychophysiological health and performance within clinical and non-clinical populations. This is attributed to its baroreflex stimulating effects and the concomitant increase in cardiac vagal activation (CVA). Hence, developing methods that strengthen the CVA boosting effect of RB could improve its clinical effectiveness. Therefore, we assessed whether supplementing RB with coherent pelvic floor activation (PRB), which has been shown to entrain the baroreflex, yields stronger CVA than standard RB. N = 32 participants performed 5-minutes of RB and PRB, which requires to recruit the pelvic floor during inhalation and release it at the initiation of the expiration. CVA was indexed via heart rate variability using RMSSD and LF-HRV. PRB induced significantly larger RMSSD (d = 1.04) and LF-HRV (d = 0.75, ps < .001) compared to RB. Our results indicate that coherent pelvic floor recruitment during RB enhances its CVA boosting effects in healthy individuals. However, subsequent studies are warranted to evaluate whether these first findings can be replicated in individuals with compromised health, including a more comprehensive psychophysiological assessment to potentially elucidate the origin of the promising effects. Importantly, longitudinal studies need to address whether the additional CVA during PRB translates to better treatment outcomes.

Short-term overtraining: effects on performance, circulatory responses, and heart rate variability

2000 ◽  
Vol 32 (8) ◽  
pp. 1480-1484 ◽  
Author(s):  
RIKARD HEDELIN ◽  
G??RAN KENTT?? ◽  
URBAN WIKLUND ◽  
PER BJERLE ◽  
KARIN HENRIKSSON-LARS??N
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Short Term
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