scholarly journals HapticPulse – Reveal Your Heart Rate in Physical Activities

2012 ◽  
pp. 51-60 ◽  
Author(s):  
Janko Timmermann ◽  
Benjamin Poppinga ◽  
Susanne Boll ◽  
Wilko Heuten
Keyword(s):  
Heart Rate ◽  
Physical Activities

The Influence of Physical Activity on Arterial Pressure during Ambulatory Recordings in Man

1980 ◽  
Vol 58 (1) ◽  
pp. 115-117 ◽  
Author(s):  
D. B. Rowlands ◽  
T. J. Stallard ◽  
R. D. S. Watson ◽  
W. A. Littler
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Heart Rate ◽  
Arterial Pressure ◽  
Ambulatory Blood Pressure ◽  
Physical Activities ◽  
Hypertensive Patients ◽  
Arterial Blood ◽  
Significant Difference ◽  
Hypotensive Therapy

1. Ambulatory blood pressure recordings were made over a 48 h period on six hypertensive patients. The conditions of study were standardized, particularly with regard to physical activity, and during one period of each day the patients were randomly allocated to be active or inactive. 2. Results show that blood pressure was highest during physical activity and lowest during sleep. There was no significant difference between the arterial pressures measured during the same physical activities carried out at the same time each day. However, during the same time on consecutive days when activity was randomized, there was a significant difference between the pressure recordings during physical activity compared with those during inactivity. Heart rate changes showed a similar trend during the randomized period. 3. Physical activity and sleep have a profound effect on continuous arterial blood pressure recordings and these are independent of time alone. These observations should be taken into account when using this ambulatory system to assess hypotensive therapy.

Measuring Fatigue through Heart Rate Variability and Activity Recognition: A Scoping Literature Review of Machine Learning Techniques

2017 ◽  
Vol 61 (1) ◽  
pp. 1748-1752 ◽  
Author(s):  
Karla Gonzalez ◽  
Farzan Sasangohar ◽  
Ranjana K. Mehta ◽  
Mark Lawley ◽  
Madhav Erraguntla
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Literature Review ◽  
Activity Recognition ◽  
Physical Activities ◽  
Research Trends ◽  
Machine Learning Techniques ◽  
Accelerometer Data ◽  
Learning Techniques ◽  
Scoping Literature Review

A scoping literature review was conducted to summarize the current research trends in fatigue identification with applications to human activity recognition through the use of diverse commercially available accelerometers. This paper also provides a brief overview of heart rate variability and its effect on fatigue. The linkage between recognizing an individual’s unique physical activities, and its possible feedback to manage fatigue levels were explored. Overall, triangulation of heart rate variability and accelerometer data show promise in identify chronic cognitive and physical fatigue levels.

scholarly journals Pregnant Supports on Hemodynamics Responses during Postural Changes and Daily Physical Activities: a randomized control trial

2021 ◽  
Author(s):  
Kunanya Masodsai ◽  
Sasipa Buranapuntulug ◽  
Parunchaya Jamkrajang ◽  
Pei-Ni Chen ◽  
Rungchai Chaunchaiyakul
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Pregnant Women ◽  
Blood Perfusion ◽  
Physical Activities ◽  
Lower Limbs ◽  
Blood Flows ◽  
Postural Changes ◽  
Significant Difference ◽  
Daily Physical Activities

Abstract BackgroundPregnant supports have been designed to prevent structural deviations but may impair blood circulation of the lower limbs, in particular during the last trimester. In this study, we evaluate the effect of different pregnant supports on hemodynamics responses during postural changes and daily physical activities.MethodsTwelve last-trimester healthy pregnant women participated in this study. With randomized supports of casual wear (CW), pelvic band (PB), and pregnant pants (PP), subjects performed postural changes (standing and side lying using sitting as control), daily physical activities (climbing up and down stairs, lifting, sit-to-stand, and 10 min walking), and routine pregnant exercises. Hemodynamic responses including heart rate, blood pressure, stroke volume, cardiac output, local blood flow, and perfusion around the ankle were measured at the end of the 1st and 3rd minute after wearing pregnant supports.ResultsStanding position in CW group showed hemodynamic compensations via increasing diastolic blood pressure (DBP, 1st minute) and heart rate (HR, 3rd minute), whereas there were no significant changes in the PB and PP groups. Side lying position lowered cardiac responses in all groups, with higher blood perfusion in CW and PB, but not in PP. Cardiac variables, blood flows, and perfusions showed no significant difference among pregnant supports during daily physical activities, and routine pregnant exercises. The satisfaction evaluation on daily activities and routine exercises showed no difference among pregnant supports but the preferential pregnant support is PB.ConclusionIt can be concluded that PB offers similar hemodynamic adjustments during postural changes as casual wear. PB support is recommended for pregnant women for daily physical activities, as well as routine exercises. Trial registration: The trial is retrospectively registered in http://www.clinicaltrials.in.th (01/02/2021) with trial no: TCTR20210201003.

scholarly journals Validation of Polar OH1 optical heart rate sensor for moderate and high intensity physical activities

PLoS ONE ◽  
2019 ◽  
Vol 14 (5) ◽  
pp. e0217288 ◽  
Author(s):  
Imali T. Hettiarachchi ◽  
Samer Hanoun ◽  
Darius Nahavandi ◽  
Saeid Nahavandi
Keyword(s):  
Heart Rate ◽  
High Intensity ◽  
Physical Activities ◽  
Rate Sensor

EFFECT OF PHYSICAL ACTIVITIES ON HEART RATE VARIABILITY AND SKIN CONDUCTANCE

2021 ◽  
pp. 2150038
Author(s):  
Ankita Soni ◽  
Kirti Rawal
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domain ◽  
Skin Conductance ◽  
Time Domain ◽  
Low Frequency ◽  
Physical Activities ◽  
Rr Intervals ◽  
Warm Up ◽  
Frequency Domain Methods

The sympathetic and parasympathetic function of the Autonomic Nervous System[Formula: see text]ANS[Formula: see text] is the primary cause of the variations in Heart Rate and Skin Conductance[Formula: see text]SC[Formula: see text] during different physical activities. This paper aims to analyze the effect of different physical activities i.e. (a) Supine (b) Standing and (c) Warm-up, on Heart Rate Variability (HRV) and SC. The standard dataset of 18 subjects has been used to analyze the effect of physical activities on the HRV and SC. In the used dataset, the subjects are in supine, standing, and warm-up positions. The linear methods (time domain & frequency domain) of HRV are implemented on the standard dataset for analyzing the effect of physical activities. It has been observed with the analysis of the HRV that the mean value of time domain methods i.e. the NN interval’s standard deviation (SDNN), the successive RR interval’s root mean square (RMSSD), RR intervals with more than 50 ms differences in between them (NN50), percentage of successive RR intervals that have the difference of more than 50 ms (pNN50) are decreased and the value of Heart rate (HR) increased when the activity has been changed from supine to standing and standing to the warm-up positions. The value of frequency domain methods, such as low frequency (LF) and the ratio of low and high frequency (LF/HF) increased, while the value of HF decreases as activity changes from supine to standing and from supine to warm-up position. Further, the increment is also observed in the value of SC when activity is switched from supine to standing and from standing to the warm-up position. It is concluded from the results that there is a significant decrement that is observed in the value of HRV, while the increment is observed in the value of SC and HR. Decrement of HRV reflects that the sympathetic activity is increased as activity changed from supine to standing and further from standing to warm-up positions.

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