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Validation of accelerometers

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https://www.readbyqxmd.com/read/28818819/quantifying-human-movement-using-the-movn-smartphone-app-validation-and-field-study
#1
Ralph Maddison, Luke Gemming, Javier Monedero, Linda Bolger, Sarahjane Belton, Johann Issartel, Samantha Marsh, Artur Direito, Madeleine Solenhill, Jinfeng Zhao, Daniel John Exeter, Harshvardhan Vathsangam, Jonathan Charles Rawstorn
BACKGROUND: The use of embedded smartphone sensors offers opportunities to measure physical activity (PA) and human movement. Big data-which includes billions of digital traces-offers scientists a new lens to examine PA in fine-grained detail and allows us to track people's geocoded movement patterns to determine their interaction with the environment. OBJECTIVE: The objective of this study was to examine the validity of the Movn smartphone app (Moving Analytics) for collecting PA and human movement data...
August 17, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28815146/quantifying-the-relative-change-in-physical-activity-after-total-knee-arthroplasty-using-accelerometer-based-measurements
#2
Vibhu Agarwal, Mathew Smuck, Nigam H Shah
Osteoarthritis is amongst the top five most disabling conditions affecting Americans over 65 years of age and imposes an annual economic burden estimated at $ 89.1 billion. Nearly half of the cost of care of Osteoarthritis is attributable to hospitalizations for total knee arthroplasties (TKA) and total hip arthroplasties (THA). The current clinical practice relies predominantly on subjective assessment of physical function and pain via patient reported outcome measures (PROM) that have proven inadequate for providing a validated, reliable and responsive measure of TKA outcomes...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28811317/sleep-duration-and-risk-of-type-2-diabetes
#3
Alicja R Rudnicka, Claire M Nightingale, Angela S Donin, Naveed Sattar, Derek G Cook, Peter H Whincup, Christopher G Owen
BACKGROUND: Associations between sleep duration and type 2 diabetes (T2D) risk markers in childhood have been little studied. We examined associations between self-reported sleep duration and T2D risk markers in children. METHODS: Cross-sectional study of 4525 multiethnic UK children aged 9 to 10 years. Sleep time was calculated from self-reported usual time of going to bed and getting up on a school day, validated in a subset using accelerometers. Fasting blood samples provided levels of serum lipids and insulin, plasma glucose, and HbA1c...
August 15, 2017: Pediatrics
https://www.readbyqxmd.com/read/28809669/muscle-activation-and-inertial-motion-data-for-non-invasive-classification-of-activities-of-daily-living
#4
Michael S Totty, Eric Wade
OBJECTIVE: Remote monitoring of physical activity using body-worn sensors provides an objective alternative to current functional assessment tools. The purpose of this study was to assess the feasibility of classifying categories of activities of daily living from the Functional Arm Activity Behavioral Observation System (FAABOS) using muscle activation and motion data. METHODS: Ten non-disabled, healthy adults were fitted with a Myo armband on the upper forearm...
August 10, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28805751/characterization-of-quadratic-nonlinearity-between-motion-artifact-and-acceleration-data-and-its-application-to-heartbeat-rate-estimation
#5
Sunho Kim, Sungbin Im, Taehyung Park
Accelerometers are applied to various applications to collect information about movements of other sensors deployed at diverse fields ranging from underwater area to human body. In this study, we try to characterize the nonlinear relationship between motion artifact and acceleration data. The cross bicoherence test and the Volterra filter are used as the approaches to detection and modeling. We use the cross bicoherence test to directly detect in the frequency domain and we indirectly identify the nonlinear relationship by improving the performance of eliminating motion artifact in heartbeat rate estimation using a nonlinear filter, the second-order Volterra filter...
August 14, 2017: Sensors
https://www.readbyqxmd.com/read/28805075/validity-and-reliability-of-accelerometry-in-identification-of-lying-sitting-standing-or-purposeful-activity-in-adult-hospital-inpatients-recovering-from-acute-or-critical-illness-a-systematic-review
#6
Jayne L Anderson, Angela J Green, L Samantha Yoward, Howard K Hall
OBJECTIVE: To investigate the validity and reliability of accelerometers to detect lying, sitting and standing postures or purposeful activity in hospitalized adults recovering from acute or critical illness. DATA SOURCES: CINAHL, MEDLINE, EMBASE, AMED, Cochrane Library, PEDro, PsycINFO and SPORTDiscuss were searched from inception to June 2017. Professional networks and reference lists of relevant articles were also searched. The main selection criteria were hospitalized adults with acute or critical illness and studies investigating the validity or reliability of accelerometers to identify body position or purposeful activity...
August 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28798198/wearable-ballistocardiogram-and-seismocardiogram-systems-for-health-and-performance
#7
Mozziyar Etemadi, Omer T Inan
Cardiovascular diseases (CVDs) are prevalent in the US and many forms of CVDs primarily affect the mechanical aspects of heart function. Wearable technologies for monitoring the mechanical health of the heart and vasculature could enable proactive management of CVDs through titration of care based on physiological status, as well as preventative wellness monitoring to help promote lifestyle choices that reduce the overall risk of developing CVDs. Additionally, such wearable technologies could be used to optimize human performance in austere environments...
August 10, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28798149/on-the-utility-of-accelerometers-to-predict-stroke-rate-using-captive-fur-seals-and-sea-lions
#8
Monique A Ladds, David A Rosen, David J Slip, Robert G Harcourt
Energy expenditure of free-living fur seals and sea lions is difficult to measure directly, but may be indirectly derived from flipper stroke rate. We filmed 10 captive otariids swimming with accelerometers either attached to a harness (Daily Diary: sampling frequency 32Hz, N=4) or taped to the fur (G6a+: 25Hz, N=6). We used down sampling to derive four recording rates from each accelerometer (Daily Diary: 32, 16, 8, 4Hz; G6a+: 25, 20, 10, 5Hz). For each of these sampling frequencies we derived 20 combinations of two parameters (RMW - the window size used to calculate the running mean, and m - the minimum number of points smaller than the local maxima used to detect a peak), from the dynamic acceleration of x, z and x+z, to estimate stroke rate from the accelerometers...
August 10, 2017: Biology Open
https://www.readbyqxmd.com/read/28797831/validity-of-the-actigraph-gt3x-and-bodymedia-sensewear-armband-to-estimate-energy-expenditure-during-physical-activity-and-sport
#9
Paul B Gastin, Cassy Cayzer, Dan Dwyer, Sam Robertson
OBJECTIVES: The purpose of this study was to assess the validity of the ActiGraph GT3X+ (GT3X+) and the BodyMedia SenseWear Armband (SWA) to estimate energy expenditure (EE) during physical activity and field sport movements. DESIGN: Criterion validity. METHODS: Twenty-six active adults completed a single 90min session involving alternating intervals of exercise (5min) and recovery (10min). Exercise involved walking (4km/h), jogging (8km/h), running (12km/h) or a sport-simulated circuit (three intervals)...
July 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28797237/validity-of-the-global-physical-activity-questionnaire-gpaq-in-bangladesh
#10
Shirin Jahan Mumu, Liaquat Ali, Anthony Barnett, Dafna Merom
BACKGROUND: Feasible and cost-effective as well as population specific instruments for monitoring physical activity (PA) levels are needed for the management and prevention of non-communicable diseases. The WHO-endorsed Global Physical Activity Questionnaire (GPAQ) has been widely used in developing countries, but the evidence base for its validity, particularly for rural populations, is still limited. The aim of the study was to validate GPAQ among rural and urban residents in Bangladesh...
August 10, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28793982/validation-of-a-smartphone-app-for-the-assessment-of-sedentary-and-active-behaviors
#11
Meynard John Toledo, Eric Hekler, Kevin Hollingshead, Dana Epstein, Matthew Buman
BACKGROUND: Although current technological advancements have allowed for objective measurements of sedentary behavior via accelerometers, these devices do not provide the contextual information needed to identify targets for behavioral interventions and generate public health guidelines to reduce sedentary behavior. Thus, self-reports still remain an important method of measurement for physical activity and sedentary behaviors. OBJECTIVE: This study evaluated the reliability, validity, and sensitivity to change of a smartphone app in assessing sitting, light-intensity physical activity (LPA), and moderate-vigorous physical activity (MVPA)...
August 9, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28765103/key-components-in-ehealth-interventions-combining-self-tracking-and-persuasive-ecoaching-to-promote-a-healthier-lifestyle-a-scoping-review
#12
Aniek J Lentferink, Hilbrand Ke Oldenhuis, Martijn de Groot, Louis Polstra, Hugo Velthuijsen, Julia Ewc van Gemert-Pijnen
BACKGROUND: The combination of self-tracking and persuasive eCoaching in automated interventions is a new and promising approach for healthy lifestyle management. OBJECTIVE: The aim of this study was to identify key components of self-tracking and persuasive eCoaching in automated healthy lifestyle interventions that contribute to their effectiveness on health outcomes, usability, and adherence. A secondary aim was to identify the way in which these key components should be designed to contribute to improved health outcomes, usability, and adherence...
August 1, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28761711/comparison-of-two-accelerometers-for-measuring-physical-activity-and-sedentary-behaviour
#13
Ted Pfister, Charles E Matthews, Qinggang Wang, Karen A Kopciuk, Kerry Courneya, Christine Friedenreich
PURPOSE: A central aspect of physical activity and sedentary behaviour research is accurate exposure assessment in the context of disease outcomes. The primary objectives of this study were to evaluate the convergent validity and test-retest reliability of the ActiGraph GT3X+ and activPAL3 accelerometers. METHODS: Participants from the Breast Cancer and Exercise Trial in Alberta (n=266) wore both devices concurrently during waking hours for 7 days. Summary measures of time (hours/day) for physical activity and sedentary behaviour were compared between devices using Student's t-tests...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28761703/validation-of-the-global-physical-activity-questionnaire-for-self-administration-in-a-european-context
#14
Miriam Wanner, Christina Hartmann, Giulia Pestoni, Brian Winfried Martin, Michael Siegrist, Eva Martin-Diener
BACKGROUND/AIM: Little is known about the measurement properties of the self-administered Global Physical Activity Questionnaire (GPAQ) in Europe. The aim was to validate the self-administered GPAQ against accelerometry in Switzerland in German, French and Italian. METHODS: Participants of this cross-sectional study were recruited among members of the Swiss Food Panel (German-speaking and French-speaking samples) and as a convenience sample (Italian-speaking sample)...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28758772/validation-of-the-godin-leisure-time-exercise-questionnaire-classification-coding-system-using-accelerometry-in-multiple-sclerosis
#15
Robert W Motl, Rachel E Bollaert, Brian M Sandroff
OBJECTIVE: There have been recent efforts toward creating a health contribution score (HCS) from the Godin Leisure-Time Exercise Questionnaire (GLTEQ) that reflects public-health guidelines for levels of moderate-to-vigorous physical activity (MVPA). The HCS yields categories of insufficiently active (less substantial or low benefits), moderately active (some benefits), and active (substantial benefits). The present study examined the validity of the GLTEQ HCS and its categories as reflecting levels of MVPA in multiple sclerosis (MS)...
July 31, 2017: Rehabilitation Psychology
https://www.readbyqxmd.com/read/28745334/evaluation-of-the-wrist-worn-actigraph-wgt3x-bt-for-estimating-activity-energy-expenditure-in-preschool-children
#16
C Delisle Nyström, J Pomeroy, P Henriksson, E Forsum, F B Ortega, R Maddison, J H Migueles, M Löf
BACKGROUND/OBJECTIVES: Easy-to-use and accurate methods to assess free-living activity energy expenditure (AEE) in preschool children are required. The aims of this study in healthy preschool children were to (a) evaluate the ability of the wrist-worn ActiGraph wGT3x-BT to predict free-living AEE and (b) assess wear compliance using a 7-day, 24-h protocol. SUBJECTS/METHODS: Participants were 40 Swedish children (5.5±0.2 years) in the Mobile-based intervention intended to stop obesity in preschoolers (MINISTOP) obesity prevention trial...
July 26, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28729320/construction-of-a-web-based-questionnaire-for-longitudinal-investigation-of-work-exposure-musculoskeletal-pain-and-performance-impairments-in-high-performance-marine-craft-populations
#17
Riccardo Lo Martire, Manudul Pahansen de Alwis, Björn Olov Äng, Karl Garme
OBJECTIVE: High-performance marine craft personnel (HPMCP) are regularly exposed to vibration and repeated shock (VRS) levels exceeding maximum limitations stated by international legislation. Whereas such exposure reportedly is detrimental to health and performance, the epidemiological data necessary to link these adverse effects causally to VRS are not available in the scientific literature, and no suitable tools for acquiring such data exist. This study therefore constructed a questionnaire for longitudinal investigations in HPMCP...
July 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/28724509/youth-oriented-activity-trackers-comprehensive-laboratory-and-field-based-validation
#18
John R Sirard, Brittany Masteller, Patty S Freedson, Albert Mendoza, Amanda Hickey
BACKGROUND: Commercial activity trackers are growing in popularity among adults and some are beginning to be marketed to children. There is, however, a paucity of independent research examining the validity of these devices to detect physical activity of different intensity levels. OBJECTIVES: The purpose of this study was to determine the validity of the output from 3 commercial youth-oriented activity trackers in 3 phases: (1) orbital shaker, (2) structured indoor activities, and (3) 4 days of free-living activity...
July 19, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28720556/ecological-momentary-assessment-of-physical-activity-validation-study
#19
Gregory Knell, Kelley Pettee Gabriel, Michael S Businelle, Kerem Shuval, David W Wetter, Darla E Kendzor
BACKGROUND: Ecological momentary assessment (EMA) may elicit physical activity (PA) estimates that are less prone to bias than traditional self-report measures while providing context. OBJECTIVES: The objective of this study was to examine the convergent validity of EMA-assessed PA compared with accelerometry. METHODS: The participants self-reported their PA using International Physical Activity Questionnaire (IPAQ) and Behavioral Risk Factor Surveillance System (BRFSS) and wore an accelerometer while completing daily EMAs (delivered through the mobile phone) for 7 days...
July 18, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28719225/association-between-social-support-and-self-care-behaviors-in-adults-with-chronic-obstructive-pulmonary-disease
#20
Zijing Chen, Vincent S Fan, Basia Belza, Kenneth Pike, Huong Q Nguyen
RATIONALE: Higher social support is associated with a better quality of life and functioning in adults with chronic obstructive pulmonary disease (COPD). OBJECTIVES: To determine the association between structural and functional social support and self-care behaviors in adults with COPD. METHODS: This was a longitudinal study using data from the CASCADE (COPD Activity: Serotonin Transporter, Cytokines, and Depression) study which was focused on depression and functioning in COPD...
July 18, 2017: Annals of the American Thoracic Society
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