Validity of Caloric Expenditure Measured from a Wheelchair User Smartwatch

2020 ◽  
Vol 41 (08) ◽  
pp. 505-511
Author(s):  
Daniel Moreno ◽  
Evan Glasheen ◽  
Antoinette Domingo ◽  
Van Brian Panaligan ◽  
Taylor Penaflor ◽  
...  
Keyword(s):  
Cycle Ergometry ◽  
Caloric Expenditure ◽  
Limits Of Agreement ◽  
Metabolic System ◽  
Wheelchair User ◽  
Wheelchair Users ◽  
Multiple Tasks ◽  
Mean Differences ◽  
Or Task

AbstractThe objective of this study was to investigate the validity of measured caloric expenditure from a fitness smartwatch designed to measured values in wheelchair users against criterion values from a portable metabolic system. 15 wheelchair users and 15 able-bodied participants completed multiple tasks; wheelchair treadmill routine at 30, 45, and 60 strokes per minute, arm cycle ergometry at 45, 60, and 80 revolutions per minute, and arm cycle ergometry VO2Peak test. There were no interactions for device or task and group (wheelchair users vs. able bodied, p=0.375-0.944) therefore results were pooled across groups for all measures. The smartwatch exhibited poor to moderate caloric expenditure association during wheelchair treadmill routine (ICC<0.39) and arm cycle ergometry (ICC<0.541). Smartwatch underestimated caloric expenditure during the wheelchair treadmill task (Mean differences (Limits of Agreement)) (−2.11 (−8.19–3.96), −3.68 (−12.64–5.28), and −4.51 (−15.05–6.02)) and overestimated during the arm cycle ergometry task (0.89 (−3.10–4.88), 3.40 (−0.31–7.12), and 2.81 (−1.71–7.32)). The smartwatch is currently not well suited to calculate caloric expenditure when performing exercise tasks on a wheelchair treadmill and arm cycle ergometry.

Fibrinogen measurement in cardiac surgery with cardiopulmonary bypass: Analysis of repeatability and agreement of Clauss method within and between six different laboratories

2014 ◽  
Vol 112 (07) ◽  
pp. 109-117 ◽  
Author(s):  
Ekaterina Baryshnikova ◽  
Armando Tripodi ◽  
Christoph J. Schlimp ◽  
Herbert Schöchl ◽  
Janne Cadamuro ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Cardiopulmonary Bypass ◽  
Plasma Fibrinogen ◽  
Detection Methods ◽  
Fibrinogen Concentration ◽  
Plasma Samples ◽  
Limits Of Agreement ◽  
Study Objective ◽  
Standard Operating ◽  
Mean Differences

SummaryPlasma fibrinogen concentration is important for coagulopathy assessment, and is most commonly measured using the Clauss method. Several factors, including device type and reagent, have been shown to affect results. The study objective was to evaluate performance and repeatability of the Clauss method and to assess differences between measurements performed during and after cardiopulmonary bypass (CPB), by testing plasma samples from patients undergoing cardiac surgery with CPB. Samples were collected from 30 patients before surgery, approximately 20 minutes before weaning from CPB, and 5 minutes after CPB and protamine. Fibrinogen concentration was determined using the Clauss method at six quality-controlled specialised laboratories, according to accredited standard operating procedures. Regarding within-centre agreement for Clauss measurement, mean differences between duplicate measurements were between 0.00 g/l and 0.15 g/l, with intervals for 95% limits of agreement for mean Bland-Altman differences up to 1.3 g/l. Regarding between-centre agreement, some mean differences between pairs of centres were above 0.5 g/l. Differences of up to ∼2 g/l were observed with individual samples. Increased variability was observed between centres, with inter-class correlation values below 0.5 suggesting only fair agreement. There were no significant differences in fibrinogen concentration before weaning from CPB and after CPB for most centres and methods. In conclusion, considerable differences exist between Clauss-based plasma fibrinogen measured using different detection methods. Nevertheless, the similarity between measurements shortly before weaning from CPB and after CPB within centres suggests that on-pump measurements could provide an early estimation of fibrinogen deficit after CPB and thus guidance for haemostatic therapy.

scholarly journals Analysis of Agreement between Expired-Air Carbon Monoxide Monitors

2016 ◽  
Vol 12 (2) ◽  
pp. 105-112 ◽  
Author(s):  
Joshua L. Karelitz ◽  
Valerie C. Michael ◽  
Kenneth A. Perkins
Keyword(s):  
Carbon Monoxide ◽  
Paired Data ◽  
Limits Of Agreement ◽  
Bland Altman Method ◽  
Dsm Iv ◽  
Cigarette Dependence ◽  
Mean Differences ◽  
Level Of Agreement ◽  
Expired Air

Introduction: The current study examined the level of agreement in expired-air carbon monoxide (CO) values, focusing especially on those confirming abstinence, between the two most commonly used CO monitors, the Vitalograph BreathCO and the Bedfont piCO+ Smokerlyzer.Methods: Expired-air samples were collected via both monitors from adult dependent smokers (44 M, 34 F) participating in studies using CO values to confirm abstinence durations of: 24 hours, 12 hours, or no abstinence. All met DSM-IV nicotine dependence criteria and had a mean (SD) Fagerström Test of Cigarette Dependence score of 5.1 (1.8). Paired data collected across multiple visits were analyzed by regression-based Bland–Altman method of Limits of Agreement (LoA).Findings: Analysis indicated a lack of agreement in CO measurement between monitors. Overall, the Bedfont monitor gave mean (±SEM) readings 3.83 (±0.23) ppm higher than the Vitalograph monitor. Mean differences between monitors were larger for those ad lib smoking (5.65 ± 0.38 ppm) than those abstaining 12–24 hours (1.71 ± 0.13 ppm). Yet, there also was not consistent agreement in classification of 24-hour abstinence between monitors.Conclusions: Systematic differences in CO readings demonstrate these two very common monitors may not result in interchangeable values, and reported outcomes in smoking research based on CO values may depend on the monitor used.

scholarly journals Advancing Digital Workflows for Refractive Error Measurements

2020 ◽  
Vol 9 (7) ◽  
pp. 2205
Author(s):  
Arne Ohlendorf ◽  
Alexander Leube ◽  
Siegfried Wahl
Keyword(s):  
Refractive Error ◽  
T Test ◽  
Refractive Errors ◽  
Altman Analysis ◽  
Limits Of Agreement ◽  
Clinical Measurement ◽  
Different Types ◽  
Method Of Measurement ◽  
Mean Differences ◽  
The Right

Advancements in clinical measurement of refractive errors should lead to faster and more reliable measurements of such errors. The study investigated different aspects of advancements and the agreement of the spherocylindrical prescriptions obtained with an objective method of measurement (“Aberrometry” (AR)) and two methods of subjective refinements (“Wavefront Refraction” (WR) and “Standard Refraction” (StdR)). One hundred adults aged 20–78 years participated in the course of the study. Bland–Altman analysis of the right eye measurement of the spherocylindrical refractive error (M) identified mean differences (±95% limits of agreement) between the different types of measurements of +0.36 D (±0.76 D) for WR vs. AR (t-test: p < 0.001), +0.35 D (± 0.84 D) for StdR vs. AR (t-test: p < 0.001), and 0.0 D (± 0.65 D) for StdR vs. WR (t-test: p < 0.001). Monocular visual acuity was 0.0 logMAR in 96% of the tested eyes, when refractive errors were corrected with measurements from AR, indicating that only small differences between the different types of prescriptions are present.

Student Attitudes Toward Intimacy with Persons Who are Wheelchair Users

2011 ◽  
Vol 25 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Irmo Marini ◽  
Roy Chan ◽  
Amber Feist ◽  
Lelia Flores-Torres
Keyword(s):  
Undergraduate Students ◽  
Student Attitudes ◽  
Role Play ◽  
Personal Characteristics ◽  
Intimate Relationship ◽  
Wheelchair User ◽  
Wheelchair Users ◽  
Short Biography ◽  
Work Interaction ◽  
Gender Type

The present study explored whether students would be attracted to having an intimate relationship with a wheelchair user if participants were able to first see a head shot photo and later read a short biography of the person. Four hundred and eight undergraduate students were surveyed regarding their interest in potentially being friends, dating or marrying a wheelchair user. Sixty-six percent indicated they would have no problem dating and/or marrying a wheelchair user. A MANOVA revealed significant differences between gender, type of relationship, and experience with a prior disability relationship. Personal characteristics of intelligence, humor and appearance rated most highly. Those unwilling to date and/or marry their selection cited that the partner would be too much work, interaction would be awkward, and the partner would be sick often. Educators may benefit from training counselors about misconceptions regarding sexuality, whereas counselors can role play and provide clients with insights regarding societal beliefs.

Acute effects of an arginine-based supplement on neuromuscular, ventilatory, and metabolic fatigue thresholds during cycle ergometry

2015 ◽  
Vol 40 (4) ◽  
pp. 379-385 ◽  
Author(s):  
Roksana B. Zak ◽  
Clayton L. Camic ◽  
Ethan C. Hill ◽  
Molly M. Monaghan ◽  
Attila J. Kovacs ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Ventilatory Threshold ◽  
Grape Seed ◽  
Peak Oxygen Uptake ◽  
Cycle Ergometer ◽  
Cycle Ergometry ◽  
Fatigue Threshold ◽  
Incremental Test ◽  
Paired Samples ◽  
Mean Differences

The purpose of the present study was to examine the effects of an acute dose of an arginine-based supplement on the physical working capacity at the fatigue threshold (PWCFT), lactate threshold (LT), ventilatory threshold (VT), and peak oxygen uptake during incremental cycle ergometry. This study used a double-blinded, placebo-controlled, within-subjects crossover design. Nineteen untrained men (mean age ± SD = 22.0 ± 1.7 years) were randomly assigned to ingest either the supplement (3.0 g of arginine, 300 mg of grape seed extract, and 300 mg of polyethylene glycol) or placebo (microcrystalline cellulose) and performed an incremental test on a cycle ergometer for determination of PWCFT, LT, VT, and peak oxygen uptake. Following a 1-week period, the subjects returned to the laboratory and ingested the opposite substance (either supplement or placebo) prior to completing another incremental test to be reassessed for PWCFT, LT, VT, and peak oxygen uptake. The paired-samples t tests indicated there were significant (P < 0.05) mean differences between the arginine and placebo conditions for the PWCFT (192 ± 42 vs. 168 ± 53 W, respectively) and VT (2546 ± 313 vs. 2452 ± 342 mL·min−1), but not the LT (135 ± 26 vs. 138 ± 22 W), absolute peak oxygen uptake (3663 ± 445 vs. 3645 ± 438 mL·min−1), or relative peak oxygen uptake (46.5 ± 6.0 vs. 46.2 ± 5.0 mL·kg−1·min−1). These findings suggested that the arginine-based supplement may be used on an acute basis for delaying the onset of neuromuscular fatigue (i.e., PWCFT) and improving the VT in untrained individuals.

scholarly journals Wheelchair accessibility to public buildings in the Kumasi metropolis, Ghana

2017 ◽  
Vol 6 ◽  
Author(s):  
Cosmos Yarfi ◽  
Evans Y.K. Ashigbi ◽  
Emmanuel K. Nakua
Keyword(s):  
Daily Living ◽  
Religious Groups ◽  
Public Buildings ◽  
Public Places ◽  
Wheelchair User ◽  
Wheelchair Users ◽  
The Public ◽  
Automated Teller Machines ◽  
Disability Law ◽  
Different Levels

Background: Accessibility implies making public places accessible to every individual, irrespective of his or her disability or special need, ensuring the integration of the wheelchair user into the society and thereby granting them the capability of participating in activities of daily living and ensuring equality in daily life.Objective: This study was carried out to assess the accessibility of the physical infrastructures (public buildings) in the Kumasi metropolis to wheelchairs after the passage of the Ghanaian Disability Law (Act 716, 2006).Methods: Eighty-four public buildings housing education facilities, health facilities, ministries, departments and agencies, sports and recreation, religious groups and banks were assessed. The routes, entrances, height of steps, grade of ramps, sinks, entrance to washrooms, toilets, urinals, automated teller machines and tellers’ counters were measured and computed.Results: Out of a total of 84 buildings assessed, only 34 (40.5%) of the buildings, 52.3% of the entrances and 87.4% of the routes of the buildings were accessible to wheelchair users. A total of 25% (13 out of 52) of the public buildings with more than one floor were fitted with elevators to connect the different levels of floors.Conclusion: The results of this study show that public buildings in the Kumasi metropolis are not wheelchair accessible. An important observation made during this study was that there is an intention to improve accessibility when buildings are being constructed or renovated, but there are no laid down guidelines as how to make the buildings accessible for wheelchair users.

scholarly journals AUTOMATION OF FULL-SIZE WHEELCHAIR USER BODY 3D-SCAN DIMENSIONAL SIGNS REGISTRATION

2021 ◽  
Vol XLIV-2/W1-2021 ◽  
pp. 189-193
Author(s):  
K. K. Shcherbina ◽  
E. V. Fogt ◽  
M. A. Golovin ◽  
M. V. Chernikova ◽  
A. D. Kuzicheva
Keyword(s):  
Cervical Vertebra ◽  
3D Scanning ◽  
Anatomical Landmarks ◽  
Wheelchair User ◽  
Wheelchair Users ◽  
Clothing Design ◽  
Technical Issues ◽  
Developing Area ◽  
3D Scans ◽  
Design And Manufacture

Abstract. Distance clothing technology is an actively developing area. For its implementation in the highly specialized area of manufacturing technical means of rehabilitation, and, in particular, in the manufacture of special functional and aesthetic clothing for disabled people, it is necessary to solve organizational and technical issues. An example of a technical issue is remote acquisition of dimensional features. The dimensional characteristics of the human body are an integral part of the technological process of manufacturing individual clothing. The use of 3D scanning makes it possible to implement remote technology for individual design and manufacture of clothing. The production of clothing for wheelchair users involves the adaptation of standard clothing design techniques to the specific properties of the posture. A case of a patient with a C5-C6 cervical vertebra fracture who has been using a wheelchair for more than 25 years is considered. The study used 3D human models obtained with a 3D scanner. The technique of scanning and an example of processing the obtained data are presented. The main features of dimensional features have been determined and an algorithm for their determination by anatomical landmarks has been developed. Recommendations are given for processing 3D scans and combining them into one 3D model. It is shown that the use of 3D scanning for the remote production of a set of functional and aesthetic clothing for a wheelchair user is a way to produce comfortable individual clothing.

scholarly journals ABLUTION WORKSTATIONS DESIGN FOR PERSON WITH PHYSICAL DISABILITIES IN MALAYSIA

2020 ◽  
Vol 20 (Special1) ◽  
pp. 101-107
Author(s):  
Siti Zawiah MD Dawal ◽  
Mirta W ◽  
Nur Syahirah A ◽  
Muhammad Suhairi A
Keyword(s):  
Lower Limb ◽  
Physical Disabilities ◽  
People With Disabilities ◽  
Body Parts ◽  
Wheelchair User ◽  
Wheelchair Users ◽  
Normal People ◽  
Facilities Design ◽  
Social Contributions

An investigation on ablution workstations design for person with disabilities has been carried out in this study. The focused were on wheelchair user or person with lower-limb impairment in Malaysia. The objective of this research is to determine the most suitable ablution workstation for person with disabilities. One hundred wheelchair users which include 74 males and 26 females participated in the study.  The findings highlighted that the most suitable and preferred ablution workstation for person with disabilities is a separate design for washing hands and legs. The results also indicated that the noteworthy body parts that should be enhanced are arms, neck, trunk, and legs.  Therefore, it can be concluded that it is important to design an ablution workstation with correct anthropometric dimensions referring to the population under investigation taking into account their preferences and disabilities limitation. Thus, the innovation will bring equality between people with disabilities and physically normal people in future facilities design. The workstation will become one of the worthy social contributions to the population of Muslim disabilities especially in Malaysia.

scholarly journals Alarm System and Emergency Message from Wheelchair User Emergency Condition

2021 ◽  
Vol 3 (2) ◽  
pp. 171-184
Author(s):  
Yavez E. Loho ◽  
◽  
Diana Lestariningsih ◽  
Peter R. Angka
Keyword(s):  
Ultrasonic Sensor ◽  
Alarm System ◽  
Test Results ◽  
Wheelchair User ◽  
Proximity Sensor ◽  
Wheelchair Users ◽  
Internet Connection ◽  
Emergency Condition

When someone uses a wheelchair, there is still the possibility of an accident to the user, such as when the user suddenly falls down from the wheelchair or the user falls down along with the wheelchair. For notification of emergency conditions for wheelchair users, an alarm system is designed that can send messages to the intended mobile number. The system is designed using Wemos D1 mini, Ultrasonic, MPU-6050 and Proximity E18-D80NK sensors. The conclusion from the measurement and test results are: the value read by the MPU-6050 sensor is taken one axis for each direction when the wheelchair was falling down, Y≤180o for left falling down, X≤50o for right falling down, Z≤65o for forward falling and Z≥140o for backwards falling down. The Ultrasonic sensor works well for detecting the presence of user’s legs and the E18-D80NK proximity sensor works well for detecting the position of the user who is sitting in a wheelchair. Receiving notifications through the BLYNK server works well, not affected by distance provided there is an internet connection connected to the device.

General Uncertainty Analysis for Manual Wheelchair Propulsion Dynamics and Development of an Instrumented Wheel

2006 ◽  
Vol 1 (2) ◽  
pp. 140-150
Author(s):  
M. Mallakzadeh ◽  
F. Sassani
Keyword(s):  
Uncertainty Analysis ◽  
Angular Position ◽  
Three Dimensional ◽  
Published Data ◽  
Wheelchair Propulsion ◽  
Wheelchair User ◽  
Wheelchair Users ◽  
Manual Wheelchair ◽  
Taylor Series Expansions ◽  
Propulsion Phase

Manual wheelchair propulsion (MWP) is an inefficient and physically straining process. A reliably fabricated and instrumented wheel can help researchers to accurately calculate the forces and moments exerted by the wheelchair users and propose strategies to improve MWP. In this study, an instrumented wheel is designed, fabricated, and validated by using general uncertainty analysis. A six-component transducer is used to measure three-dimensional forces and moments applied by the wheelchair user on the handrim. The output of the transducer are forces and moments, which are directly transmitted to a PC using a USB port. By developing the transformation equations, the actual forces and moments on the hand of the wheelchair user are calculated. The angular position of the hand on the handrim is calculated from the kinetic data obtained through the instrumented wheel, and the derived equations. The general uncertainty analysis method is used to calculate the uncertainty values for the variables of interest with the Taylor series expansions. An analysis of the results shows that it is possible to obtain reliable information for MWP by using the instrumented wheel. Most of the data have uncertainties under 5% during much of the propulsion phase, and the patterns and overall behavior of the results are comparable to published data.

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