The elevation training mask induces modest hypoxaemia but does not affect heart rate variability during cycling in healthy adults

2019 ◽  
Vol 36 (2) ◽  
pp. 105-112 ◽  
Author(s):  
Hyun Chul Jung ◽  
Nun Hee Lee ◽  
Smith D. John ◽  
Sukho Lee
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Adults ◽  
Affect Heart Rate

scholarly journals Musical Rhythms Affect Heart Rate Variability: Algorithm and Models

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Hui-Min Wang ◽  
Sheng-Chieh Huang
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
High Frequency ◽  
Physiological Model ◽  
Psychological Model ◽  
Two Measures ◽  
Electrocardiogram Ecg ◽  
Musical Rhythms ◽  
Increased Valence ◽  
Affect Heart Rate

There were a lot of psychological music experiments and models but there were few psychological rhythm experiments and models. There were a lot of physiological music experiments but there were few physiological music models. There were few physiological rhythm experiments but there was no physiological rhythm model. We proposed a physiological rhythm model to fill this gap. Twenty-two participants, 4 drum loops as stimuli, and electrocardiogram (ECG) were employed in this work. We designed an algorithm to map tempo, complexity, and energy into two heart rate variability (HRV) measures, the standard deviation of normal-to-normal heartbeats (SDNN) and the ratio of low- and high-frequency powers (LF/HF); these two measures form the physiological valence/arousal plane. There were four major findings. Initially, simple and loud rhythms enhanced arousal. Secondly, the removal of fast and loud rhythms decreased arousal. Thirdly, fast rhythms increased valence. Finally, the removal of fast and quiet rhythms increased valence. Our work extended the psychological model to the physiological model and deepened the musical model into the rhythmic model. Moreover, this model could be the rules of automatic music generating systems.

The impact of noise on the short-term effects of traffic-related air pollution on heart rate variability in young healthy adults

2013 ◽  
Vol 2013 (1) ◽  
pp. 4244
Author(s):  
Jing Huang ◽  
Furong Deng ◽  
Shaowei Wu ◽  
Henry Lu ◽  
Yu Hao ◽  
...  
Keyword(s):  
Heart Rate ◽  
Air Pollution ◽  
Heart Rate Variability ◽  
Healthy Adults ◽  
Short Term ◽  
The Impact ◽  
Short Term Effects

TRAFFIC-RELATED AIR POLLUTION AND HEART RATE VARIABILITY IN A PANEL OF HEALTHY ADULTS

2011 ◽  
Vol 2011 (1) ◽  
Author(s):  
Shaowei Wu ◽  
Furong Deng ◽  
Jie Niu ◽  
Qinsheng Huang ◽  
Youcheng Liu ◽  
...  
Keyword(s):  
Heart Rate ◽  
Air Pollution ◽  
Heart Rate Variability ◽  
Healthy Adults

Single Vs. Multiple Bouts of Exercise Similarly Affect Heart Rate Variability

2005 ◽  
Vol 37 (Supplement) ◽  
pp. S5
Author(s):  
Jill Kanaley ◽  
Tracy Baynard ◽  
Ruth Franklin ◽  
Robert Carhart ◽  
Arturo Figueroa ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Affect Heart Rate

scholarly journals Distal Traditional Acupuncture Points of the Large Intestinal Meridian and the Stomach Meridian Differently Affect Heart Rate Variability and Oxygenation of the Trapezius Muscle

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Yukiko Shiro ◽  
Young-Chang P. Arai ◽  
Tatsunori Ikemoto ◽  
Takashi Kawai ◽  
Masahiko Ikeuchi ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Acupuncture Point ◽  
Trapezius Muscle ◽  
The Body ◽  
Control Group ◽  
Acupuncture Points ◽  
Stomach Meridian ◽  
Frequency Components ◽  
Affect Heart Rate

Physicians in traditional Chinese medicine have found that acupoints and meridians have effects on specific parts of the body. The aim of this study was to see how acupressure at distal acupuncture points of a specific meridian affects heart rate variability (HRV) and oxygenation of the trapezius muscle. Forty-one female participants were randomly allocated to three groups. Subjects in the Stomach Meridian acupuncture point (ST) group received acupressure at ST 34, ST 36, and ST 41, subjects in the Large Intestinal Meridian acupuncture point (LI) group received acupressure at LI 4, LI 10, and LI 11, and subjects in the control group did not receive any stimuli. HRV and oxygenation of the trapezius muscles were measured. The high frequency components of HRV in the control and LI groups tended to be higher than those in the ST group. Total hemoglobin in the control and LI groups eventually reached significantly higher levels than in the ST group. While oxyhemoglobin (ΔO2Hb) in the control and LI groups did not change, ΔO2Hb in the ST significantly decreased temporarily.

scholarly journals Perceived Pain Responses to Foam Rolling Associate with Basal Heart Rate Variability

2021 ◽  
Vol 14 (2) ◽  
pp. 14-21
Author(s):  
Marvette Wilkerson, MS ◽  
Christopher Anderson, BS ◽  
Gregory J. Grosicki, PhD ◽  
Andrew A. Flatt, PhD
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pain Scale ◽  
Healthy Adults ◽  
Foam Rolling ◽  
Rr Interval ◽  
Natural Logarithm ◽  
Perceived Pain ◽  
Pain Ratings ◽  
Total Body

Background: Foam rolling (FR) is a self-myofascial release technique with unclear effects on autonomic functioning, indexed by heart rate variability (HRV). FR can be perceived as painful or relaxing, which may explain interindividual HRV responses. Purpose: To determine if acute FR alters resting HRV. A secondary aim was to determine if perceived pain during FR would predict HRV responses. Setting: Academic institution. Methods: In a randomized, crossover design, healthy adults (50% female) performed total body FR or control on separate days. Perceived pain ratings were obtained following FR of each muscle group and summed to generate an overall perceived pain rating. Seated measures of the mean RR interval and the natural logarithm of the root-mean square of successive RR interval differences (LnRMSSD, a parasympathetic HRV index) were obtained at 5-10 min pre-, 5-10 min post-, and 25-30 min post-FR. Results: No effects were observed for RR interval (p = .105–.561) or LnRMSSD (p = .110–.129). All effect sizes ranged from trivial–small (0.00–0.26). Changes in RR interval (r = 0.220–0.228, p = .433–.488) and LnRMSSD (r = 0.013–0.256, p = .376–.964) were not associated with pain scale sum. Baseline LnRMSSD was associated with pain scale sum (r = -0.663; p = .001). Conclusion: FR did not systematically alter HRV, nor did perceived pain ratings predict HRV responses. Those with lower pre-FR HRV reported higher perceived pain during FR. Basal cardiac autonomic activity may, therefore, influence pain sensitivity to FR in healthy adults.

scholarly journals The influence of low-intensity resistance training combined with neuromuscular electrical stimulation on autonomic activity in healthy adults: A randomized controlled cross-over trial

2020 ◽  
pp. 1-9
Author(s):  
Toshiki Kutsuna ◽  
Hitoshi Sugawara ◽  
Hideaki Kurita ◽  
Satomi Kusaka ◽  
Tetsuya Takahashi
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Electrical Stimulation ◽  
Neuromuscular Electrical Stimulation ◽  
Cardiovascular Responses ◽  
Healthy Adults ◽  
Autonomic Activity ◽  
Low Intensity ◽  
Randomized Controlled

Background: Low-intensity resistance training (RT) combined with neuromuscular electrical stimulation (NMES) is one method of exercise to improve the deterioration of physical function. However, it is unclear whether low-intensity RT combined with NMES (RT + NMES) can be safely implemented. Objective: This study aimed to examine the influence of low-intensity RT + NMES on autonomic activity and cardiovascular responses in healthy adults. Methods: This study was an open-label, randomized controlled cross-over trial. The exercise intensity of isometric knee extension RT was set to 40% of the maximum voluntary contraction (peak torque). NMES was adjusted to a biphasic asymmetrical waveform with the frequency maintained at 50 Hz and a phase duration of 300 [Formula: see text]s. The difference in the change in autonomic activity and cardiovascular responses was compared by assessing heart rate variability, blood pressure, and heart rate during RT and [Formula: see text]. Results: Twenty healthy male college students (mean age [Formula: see text] years) participated in this study. The ratio of low- and high-frequency components of heart rate variability, systolic blood pressure, and heart rate increased during exercise in the RT and [Formula: see text] sessions ([Formula: see text]). There were no significant differences in autonomic activity and cardiovascular responses throughout the sessions during RT and [Formula: see text]. Conclusion: In conclusion, our results demonstrated that low-intensity [Formula: see text] was safe and did not induce excessive autonomic and cardiovascular responses in healthy adults.

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