Real-time Judgment of Workload using Heart Rate and Physical Activity

In this chapter, the authors discuss derivation, implementation, and testing of a robust real-time algorithm for the estimation of heart rate (HR) from electrocardiograms recorded on subjects performing vigorous physical activity. They formulate the problem of HR estimation as a problem of inference in a Bayesian network, which utilizes prior information about the probability distribution of HR changes. From this formulation they derive an inference procedure, which can be implemented as a grid filter. The resulting algorithm can then follow even a rapidly changing HR, whilst withstanding a series of missed or false QRS detections. Also, the HR estimate is complete with confidence intervals to allow the identification of the moments, where the precision of HR estimation is lowered. Additionally, the computational complexity of this algorithm is acceptable for battery powered portable devices.

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Personalized Tracking of Physical Activity in Children Using a Wearable Heart Rate Monitor

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17165895 ◽

2020 ◽

Vol 17 (16) ◽

pp. 5895

Author(s):

Santiago A. Pérez ◽

Ana M. Díaz ◽

Diego M. López

Keyword(s):

Physical Activity ◽

Heart Rate ◽

Real Time ◽

Computer Games ◽

Serious Games ◽

Significant Risk ◽

Computer Game ◽

Significant Risk Factor ◽

Interactive System ◽

User Characteristics

Serious games are video games that are intended to support learning while entertaining. They are considered valuable tools to improve user-specific skills or facilitate educational or therapeutic processes, especially in children. One of the disadvantages of computer games, in general, is their promotion of sedentary habits, considered as a significant risk factor for developing diseases such as obesity and hypertension. Exergames are serious games created to overcome the disadvantages of traditional computer games by promoting physical activity while playing. This study describes the development and evaluation of an adaptive component to monitor physical activity in children while using an exergame. The system is based on wearable technology to measure heart rate and perform real-time customizations in the exergame. To evaluate the adaptive component, an experiment was conducted with 30 children between 5 and 7 years of age, where the adaptive system was contrasted with a conventional interactive system (an exergame without adaptive component). It was demonstrated that the computer game, using the adaptive component, was able to change in real-time some of its functionalities based on the user characteristics. Increased levels of heart rate and caloric expenditure were significant in some of the game scenarios using the adaptive component. Although a formal user experience evaluation was not performed, excellent game playability and adherence by users were observed.

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Physical Activity in Aging Population

European Journal of Interdisciplinary Studies ◽

10.26417/ejis.v5i3.p74-80 ◽

2019 ◽

Vol 5 (3) ◽

pp. 74

Author(s):

Rezarta Stena ◽

Klara Hysenaj ◽

Mitilda Gugu Karoli ◽

Armelda Teta ◽

Gjergji Doka

Keyword(s):

Physical Activity ◽

Older Adults ◽

Heart Rate ◽

Pain Intensity ◽

Range Of Motion ◽

Training Program ◽

Grip Strength ◽

Upper Limb ◽

Hand Grip ◽

Trunk Flexibility

It is known that worldwide populations are aging, and also that physical activity can play an important role in minimizing impairments characteristic of old age. Adopting a more active lifestyle and doing regular physical activity, including aerobic and resistance exercises, daily walking etc. have been demonstrated to improve cardiovascular, respiratory, and musculoskeletal parameters in older adults. We assessed a potential participant from Elbasan (Albania), 67 years, for eligibility to participate in a 5 month training program. The subject gave written informed consent before inclusion.The following parameters were measured at the beginning (baseline) and end of the training period: BMI, body fat percentage, hand grip strength, lower/upper limb and trunk flexibility and range of motion, heart rate, balance, pain intensity, as well as VO2 max, directly and/or an estimate using the Rockport fitness test estimate. An initial evaluation was carried out just before starting the training (baseline). A second evaluation was made 5 months after starting the program of physical exercise (post training). Each evaluation included the recording of health related events, such as any changes in previous symptoms, as well as measurements of balance, flexibility, body composition, coordination, muscle strength, and aerobic capacity, to detect any changes that might have been induced specifically by physical activity. The subject’s attendance and participation in the program was also recorded. Range of motion for each part evaluated (trunk, hip, cervical region and shoulder) is improved about 15-20° degree. BMI, hand grip strength, lower/upper limb and trunk flexibility, heart rate, balance, pain intensity, VO2 max are also improved after training program. Following a training program or a regular physical activity in older adults minimise impairments characteristics in this age and cardiovascular, respiratory, and musculoskeletal parameters. According to the low importance shown in my country for the physical activity in older adults, I want to emphasize the importance of state structures involvement and the sensibilization of this group of age to stimulate an actively participation in physical training programs followed by professionals for bests life parameters. A higher investment for this age group, building as many facilities as possible for activation and spending quality free time, hiring more physiotherapists in nursing homes will increase life motivation and improve the quality and the parameters of living.

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An Examination of Real-Time Heart Rate Variability During Laparoscopic Cholecystectomies and Radical Surgeries

10.21236/ada389114 ◽

2000 ◽

Cited By ~ 1

Author(s):

K. Zaglaniczny ◽

W. Shoemaker ◽

D. S. Gorguze ◽

C. Woo ◽

J. Colombo

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Real Time

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Characterizing Blood Pressure, Heart Rate, Physical Activity, Circadian Rhythm and their Response to NOS Inhibitor and Substrate in CHF Rats with Telemetry

Vascular Disease Prevention ◽

10.2174/1567270000401010019 ◽

2008 ◽

Vol 1 (1) ◽

pp. 159-166

Author(s):

Weimin Zhang ◽

Zhongyun Wang ◽

Weiguo Zhang

Keyword(s):

Physical Activity ◽

Blood Pressure ◽

Heart Rate ◽

Circadian Rhythm ◽

Nos Inhibitor

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Characterizing Blood Pressure, Heart Rate, Physical Activity, Circadian Rhythm and their Response to NOS Inhibitor and Substrate in CHF Rats with Telemetry

Vascular Disease Prevention ◽

10.2174/1567270043405222 ◽

2004 ◽

Vol 1 (2) ◽

pp. 159-166 ◽

Cited By ~ 3

Author(s):

Weimin Zhang ◽

Zhongyun Wang ◽

Weiguo Zhang

Keyword(s):

Physical Activity ◽

Blood Pressure ◽

Heart Rate ◽

Circadian Rhythm ◽

Nos Inhibitor

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Association between Objectively Measured Physical Activity and Arterial Stiffness in Children with Congenital Heart Disease

Journal of Clinical Medicine ◽

10.3390/jcm10153266 ◽

2021 ◽

Vol 10 (15) ◽

pp. 3266

Author(s):

Laura Willinger ◽

Leon Brudy ◽

Renate Oberhoffer-Fritz ◽

Peter Ewert ◽

Jan Müller

Keyword(s):

Physical Activity ◽

Blood Pressure ◽

Heart Rate ◽

Congenital Heart Disease ◽

Heart Disease ◽

Arterial Stiffness ◽

Systolic Blood Pressure ◽

Congenital Heart ◽

Z Score ◽

Objectively Measured

Background: The association between physical activity (PA) and arterial stiffness is particularly important in children with congenital heart disease (CHD) who are at risk for arterial stiffening. The aim of this study was to examine the association between objectively measured PA and arterial stiffness in children and adolescents with CHD. Methods: In 387 children and adolescents with various CHD (12.2 ± 3.3 years; 162 girls) moderate-to-vigorous PA (MVPA) was assessed with the “Garmin vivofit jr.” for 7 consecutive days. Arterial stiffness parameters including pulse wave velocity (PWV) and central systolic blood pressure (cSBP) were non-invasively assessed by oscillometric measurement via Mobil-O-Graph®. Results: MVPA was not associated with PWV (ß = −0.025, p = 0.446) and cSBP (ß = −0.020, p = 0.552) in children with CHD after adjusting for age, sex, BMI z-score, peripheral systolic blood pressure, heart rate and hypertensive agents. Children with CHD were remarkably active with 80% of the study population reaching the WHO recommendation of average 60 min of MVPA per day. Arterial stiffness did not differ between low-active and high-active CHD group after adjusting for age, sex, BMI z-score, peripheral systolic blood pressure, heart rate and hypertensive agents (PWV: F = 0.530, p = 0.467; cSBP: F = 0.843, p = 0.359). Conclusion: In this active cohort, no association between PA and arterial stiffness was found. Longer exposure to the respective risk factors of physical inactivity might be necessary to determine an impact of PA on the vascular system.

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