Search Results - Bland, Kate~
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A preliminary attempt to understand compatibility of photoplethysmographic pulse rate variability with electrocardiogramic heart rate variability
Published 2008“…We investigated the difference between heart rate variability (HRV) derived from electrocardiogramic (ECG) signals and pulse rate variability (PRV) derived from photoplethysmographic (PPG) signals. …”
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Detection of physiological changes after exercise via a remote optophysiological imaging system
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Non-contact reflection photoplethysmography towards effective human physiological monitoring
Published 2010“…The NRPPG engineering setup with a vertical cavity surface emitting laser (VCSEL) as a light source and a high-speed PiN photodiode as a photodetector was configured based upon the principles of light-tissue interaction and Beer-Lambert’s law. …”
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Assessment of the accuracy of different systems for measuring football velocity and spin rate in the field
Published 2019“…One skilled male university football player performed 70 shots covering a wide range of ball velocities (12–30 m·s-1 ) and spin rates (94– 743 rpm). …”
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A study on the effect of contact pressure during physical activity on photoplethysmographic heart rate measurements
Published 2020“…Results: The results show that the CP of 54 mmHg provides the most accurate outcome with a Pearson correlation coefficient ranging from 0.81 to 0.95 and a mean average percentage error ranging from 3.8% to 2.4%, based on the physical activity rate. Conclusion: Authors found that changes in the CP have greater effects on PPG-HR signal quality than those deriving from the intensity of the physical activity and specifically, the individual best CP for each subject provided reliable HR measurements even for a high intensity of physical exercise with a Bland–Altman plot within ±11 bpm. …”
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A multi-channel opto-electronic sensor to accurately monitor heart rate against motion artefact during exercise
Published 2015“…The aim of this work was to study how to capture the heart rate (HR) efficiently through a well-constructed OEPS and a 3-axis accelerometer with wireless communication. …”
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Dynamic water footprint assessment (WFA) of manufacturing industry by using cyber-physical systems (CPS)
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Criterion validity of a field-based assessment of aerobic capacity in wheelchair rugby athletes
Published 2021“…Purpose: To confirm whether peak aerobic capacity determined during laboratory testing could be replicated during an on-court field-based test in wheelchair rugby (WR) players. Methods: Sixteen WR players performed an incremental speed-based peak oxygen uptake (V̇O2peak) test on a motorised treadmill (TM) and completed a Multi-stage Fitness Test (MFT) on a basketball court in a counter-balanced order while spirometric data were recorded. …”
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2-kV thyristor triggered in impact-ionization wave mode by a solid-state spiral generator
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A comparative study of physiological monitoring with a wearable opto-electronic patch sensor (OEPS) for motion reduction
Published 2015“…Significance of standard deviation and error of mean yield values of 2.27 and 0.65 beats per minute, respectively; and a high correlation (0.97) between the results of the commercial sensor and OEPS. T, Wilcoxon and Bland-Altman with 95% limit of agreement tests were also applied in the comparison of heart rates extracted from these sensors, yielding a mean difference (MD: 0.08). …”
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Enhancement of absorption and resistance of motion utilizing a multi-channel opto-electronic sensor to effectively monitor physiological signs during sport exercise
Published 2015“…The results of sport physiological effects were extracted from the datasets of physical movements, i.e. sitting, standing, waking, running and cycling. t-test, Bland-Altman and correlation analysis were applied to evaluate the performance of the OEPS system against Acti-Graph and Mio-Alpha.There was no difference in heart rate measured using OEPS and both Acti-Graph and Mio-Alpha (both p…”
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Creatine and creatinine quantification in Olympic athletes: dried blood spot analysis pilot study
Published 2021“…Capillary dried blood spot (DBS) samples facilitate field-based collection without venipuncture. This pilot study aims to evaluate the viability of creatine (Cr) and creatinine (Crt) quantification using fresh capillary serum (CrS/CrtS) and DBS samples (CrDBS/CrtDBS), using Flow Injection Analysis Mass Spectrometry (FIA – MS). …”
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Development of a high-throughput UHPLC-MS/MS (SRM) method for the quantitation of endogenous glucagon from human plasma
Published 2014“…Conclusion: Our method is the first peer reviewed LC-MS/MS method for the quantitation of endogenous levels of glucagon, and offers a viable alternative to RIA-based approaches.…”
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Calibration and validation of the ActiGraph GT3X+ in 2-3 year olds
Published 2014“…Agreement with Children's Activity Rating Scale was assessed with Cohen's kappa, Lin's concordance, and Bland-Altman plots. …”
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Contactless hand tremor amplitude measurement using smartphones: development and pilot evaluation
Published 2023“…In routine clinical practice, tremor frequency and amplitude are assessed by expert rating using a 0 to 4 integer scale. Such ratings are subjective and have poor inter-rater reliability. …”
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An improved transmitter system to accurately measure wet-bulb temperature of air
Published 2019“…The simulation results through latent heat–based iteration algorithm were in good agreement (R2 5 0.99) with the reference. …”
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Cross-sectional and longitudinal comparisons of self-reported and device-assessed physical activity and sedentary behaviour
Published 2020“…Future work is needed to enhance the quality of self-reported methods to assess PA and SB (e.g., face and content validity), and consider improvements to the processing of device-based data.…”
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Validation of the ADAMO care watch for step counting in older adults
Published 2018“…Methods Twenty older adults aged ≥ 65 years (mean ± SD, 75±7 years; range, 68–91) and 20 young adults (25±5 years, range 20–40), wore a care watch on each wrist and performed a number of randomly ordered tasks: walking at slow, normal and fast self-paced speeds; a Timed Up and Go test (TUG); a step test and ascending/descending stairs. …”
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The measurement of physical activity and sedentary behaviour in a sample of 2 to 3 year old South Asian and White British children
Published 2013“…The majority of evidence on levels, determinants, and health consequences of SB and PA in young children is, however, based on subjective measures in predominately White children aged three years or older. …”
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The measurement, levels, and correlates of physical activity in a bi-ethnic population of young children
Published 2016“…Validity analysis used all data and data falling with specific proportion boundaries for MVPA (2%-41%) and sedentary time (30%-94%). …”
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