keyword
MENU ▼
Read by QxMD icon Read
search

Accelerometers

keyword
https://www.readbyqxmd.com/read/29165128/associations-between-accelerometer-measured-physical-activity-and-body-fatness-in-school-aged-children
#1
Aleš Gába, Josef Mitáš, Lukáš Jakubec
BACKGROUND: The main aim of the study was to examine the cross-sectional associations between objectively measured physical activity (PA) and body fatness in 7-12-year-old children. METHODS: We performed an analysis of 365 children (209 girls). Participant recruitment was performed in eight randomly selected elementary schools in cities and towns with various numbers of inhabitants. The body composition analysis was performed according to a multi-frequency bioelectrical impedance analysis; PA was monitored using an accelerometer...
April 28, 2017: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29164446/automated-detection-of-repetitive-motor-behaviors-as-an-outcome-measurement-in-intellectual-and-developmental-disabilities
#2
Kristin H Gilchrist, Meghan Hegarty-Craver, Robert B Christian, Sonia Grego, Ashley C Kies, Anne C Wheeler
Repetitive sensory motor behaviors are a direct target for clinical treatment and a potential treatment endpoint for individuals with intellectual or developmental disabilities. By removing the burden associated with video annotation or direct observation, automated detection of stereotypy would allow for longer term monitoring in ecologic settings. We report automated detection of common stereotypical motor movements using commercially available accelerometers affixed to the body and a generalizable detection algorithm...
November 21, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/29162078/a-tailored-counseling-and-home-based-rehabilitation-program-to-increase-physical-activity-and-improve-mobility-among-community-dwelling-older-people-after-hospitalization-protocol-of-a-randomized-controlled-trial
#3
K Turunen, L Aaltonen, J Kumpumäki, E Portegijs, S Keikkala, M-L Kinnunen, T Finni, S Sipilä, R Nikander
BACKGROUND: Physical activity (PA) decreases during hospitalization. In particular, the amount of PA engaged in by older people who are hospitalized following musculoskeletal injury is likely to be limited for months after discharge home. Given the importance of an active lifestyle for their recovery and the prevention of future adverse outcomes, there is clearly a need for interventions to increase PA. This article describes the protocol of a randomized controlled trial set up to investigate the effects of a physical activity oriented home rehabilitation program (ProPA) on PA and the restoration of mobility in community-dwelling older people...
November 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29161916/smartphone-accelerometers-for-the-detection-of-heart-rate
#4
Federica Landreani, Enrico Gianluca Caiani
Micro-electro-mechanical systems technology, now embedded into smartphones, potentially allows measuring heart mechanical activity by positioning the phone on the body and acquiring vibrational signals, without the need for additional peripherals or interfaces. However, lack of standardization in experimental protocol, processing methodology and validation procedures, together with the wide range of available smartphones on the market, impact on the comparability of results and their general validity. The aim of this review is to provide information on the state-of-the art of research in this field, with current limitations and potentials, thus potentially serving as a basis for the creation of a standard based on current experiences...
November 22, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/29158728/corrigendum-analysis-of-correlation-between-an-accelerometer-based-algorithm-for-detecting-parkinsonian-gait-and-updrs-subscales
#5
Alejandro Rodríguez-Molinero, Albert Samà, Carlos Pérez-López, Daniel Rodríguez-Martín, Sheila Alcaine, Berta Mestre, Paola Quispe, Benedetta Giuliani, Gabriel Vainstein, Patrick Browne, Dean Sweeney, Leo R Quinlan, J Manuel Moreno Arostegui, Àngels Bayes, Hadas Lewy, Alberto Costa, Roberta Annicchiarico, Timothy Counihan, Gearòid Ò Laighin, Joan Cabestany
[This corrects the article on p. 431 in vol. 8, PMID: 28919877.].
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29157150/assessment-of-urinary-protein-composition-in-response-to-consecutive-days-of-wildland-firefighting
#6
Nobuo Yasuda, Brent C Ruby
The purpose of this study was to examine the pattern of urinary protein excretion induced by three consecutive days of wildland firefighting. Eighteen male active duty military personnel were served as the participants. All testing consisting of three consecutive days was conducted at a Northwestern USA fire camp. All participants consumed military-based foods containing 2620-2864 kcal/day. The work activity was evaluated with an accelerometer in association with body weight and hydration markers over the experimental period...
November 20, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/29156587/a-subnano-g-electrostatic-force-rebalanced-flexure-accelerometer-for-gravity-gradient-instruments
#7
Shitao Yan, Yafei Xie, Mengqi Zhang, Zhongguang Deng, Liangcheng Tu
A subnano-g electrostatic force-rebalanced flexure accelerometer is designed for the rotating accelerometer gravity gradient instrument. This accelerometer has a large proof mass, which is supported inversely by two pairs of parallel leaf springs and is centered between two fixed capacitor plates. This novel design enables the proof mass to move exactly along the sensitive direction and exhibits a high rejection ratio at its cross-axis directions. Benefiting from large proof mass, high vacuum packaging, and air-tight sealing, the thermal Brownian noise of the accelerometer is lowered down to less than 0...
November 18, 2017: Sensors
https://www.readbyqxmd.com/read/29155845/effect-of-actigraph-s-low-frequency-extension-for-estimating-steps-and-physical-activity-intensity
#8
Yuri Feito, Lyndsey M Hornbuckle, Lauren A Reid, Scott E Crouter
This study examined the effects of the ActiGraph's (AG) low-frequency extension (LFE) filter on steps and physical activity classification in the free-living environment. Thirty-four African-American women (age, 24.5±5.2 years; BMI, 24.9±4.5 kg/m2) had daily activity measured simultaneously with an AG-GT3X+ accelerometer and a New Lifestyles NL-800 pedometer for seven days. Steps per day (steps/day) and time (minutes/day) spent in sedentary, light, and moderate-to-vigorous physical activity (MVPA) were examined with and without the LFE filter (AG-LFE and AG-N, respectively)...
2017: PloS One
https://www.readbyqxmd.com/read/29155839/performance-of-thigh-mounted-triaxial-accelerometer-algorithms-in-objective-quantification-of-sedentary-behaviour-and-physical-activity-in-older-adults
#9
Jorgen A Wullems, Sabine M P Verschueren, Hans Degens, Christopher I Morse, Gladys L Onambélé
Accurate monitoring of sedentary behaviour and physical activity is key to investigate their exact role in healthy ageing. To date, accelerometers using cut-off point models are most preferred for this, however, machine learning seems a highly promising future alternative. Hence, the current study compared between cut-off point and machine learning algorithms, for optimal quantification of sedentary behaviour and physical activity intensities in the elderly. Thus, in a heterogeneous sample of forty participants (aged ≥60 years, 50% female) energy expenditure during laboratory-based activities (ranging from sedentary behaviour through to moderate-to-vigorous physical activity) was estimated by indirect calorimetry, whilst wearing triaxial thigh-mounted accelerometers...
2017: PloS One
https://www.readbyqxmd.com/read/29154738/validation-of-a-pedometer-algorithm-as-a-tool-for-evaluation-of-locomotor-behaviour-in-dairy-mediterranean-buffalo
#10
Luigi D'Andrea, Jacopo Guccione, Maher Alsaaod, Ramona Deiss, Antonio Di Loria, Adrian Steiner, Paolo Ciaramella
This research communication validates an algorithm to monitor natural occurrence of locomotor behaviours in dairy Mediterranean buffalo based on the output of a 3-dimensional accelerometer (RumiWatch®, pedometer). Several characteristics of the locomotor behaviour were detected with a very high (up-right, lying and standing time) or high degree of correlation (walking time and number of strides) and a low mean difference with the video recording. The proportion of correctly detected events exceeded 99 % for the following variables: stand up and lie down events, as well as number of lying, standing or walking bouts...
November 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/29153539/deviations-in-frequency-and-mode-of-vibration-in-whole-body-vibration-training-devices-with-long-term-and-regular-use
#11
Tobias S Kaeding, Sanam Moghaddamnia, Momme Kück, Lothar Stein
Research regarding whole body vibration training (WBVT) and its practical use may be hindered by the fact that WBVT devices generate frequencies and/or modes of vibration different from their preset adjustments. This research aimed to clarify whether prolonged regular use can generate such deviations in frequency and mode of vibration. Three WBVT devices, each used for approximately 13 months in two research projects, were tested with an accelerometer before start of the 1st study, after four months, and after 13 months (the completion of the 2nd study)...
November 16, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29151810/real-time-subjective-assessment-of-psychological-stress-associations-with-objectively-measured-physical-activity-levels
#12
Malia Jones, Anais Taylor, Yue Liao, Stephen S Intille, Genevieve Fridlund Dunton
Psychosocial stress may be a factor in the link between physical activity and obesity. This study examines how the daily experience of psychosocial stress influences physical activity levels and weight status in adults. This study reports temporally ordered relationships between sedentary, light, and moderate-to-vigorous physical activity levels and real-time reports of subjective psychosocial stress levels. Adults (n=105) wore an accelerometer and participated in an ecological momentary assessment (EMA) of stress by answering prompts on a mobile phone several times per day over 4 days...
July 2017: Psychology of Sport and Exercise
https://www.readbyqxmd.com/read/29149050/combining-a-disturbance-observer-with-triple-loop-control-based-on-mems-accelerometers-for-line-of-sight-stabilization
#13
Yong Luo, Yongmei Huang, Chao Deng, Yao Mao, Wei Ren, Qiongyan Wu
In the CCD-based fine tracking optical system (FTOS), the whole disturbance suppression ability (DSA) is the product of the inner loop and outer position loop. Traditionally, high sampling fiber-optic gyroscopes (FOGs) are added to the platform to stabilize the line-of-sight (LOS). However, because of the FOGs' high cost and relatively big volume relative to the back narrow space of small rotating mirrors, we attempt in this work to utilize a cheaper and smaller micro-electro-mechanical system (MEMS) accelerometer to build the inner loop, replacing the FOG...
November 17, 2017: Sensors
https://www.readbyqxmd.com/read/29148293/quantity-of-movement-as-a-measure-of-engagement-for-dementia-the-influence-of-motivational-disorders
#14
Giulia Perugia, Daniel Rodríguez-Martín, Marta Díaz Boladeras, Andreu Català Mallofré, Emilia Barakova, Matthias Rauterberg
Engagement in activities is crucial to improve quality of life in dementia. Yet, its measurement relies exclusively on behavior observation and the influence that behavioral and psychological symptoms of dementia (BPSD) have on it is overlooked. This study investigated whether quantity of movement, gauged with a wrist-worn accelerometer, could be a sound measure of engagement and whether apathy and depression negatively affected engagement. Fourteen participants with dementia took part in 6 sessions of activities: 3 of cognitive games (eg, jigsaw puzzles) and 3 of robot play (Pleo)...
January 1, 2017: American Journal of Alzheimer's Disease and Other Dementias
https://www.readbyqxmd.com/read/29147670/isokinetic-extension-strength-is-associated-with-single-leg-vertical-jump-height
#15
Felix Fischer, Cornelia Blank, Tobias Dünnwald, Peter Gföller, Elmar Herbst, Christian Hoser, Christian Fink
Background: Isokinetic strength testing is an important tool in the evaluation of the physical capacities of athletes as well as for decision making regarding return to sports after anterior cruciate ligament (ACL) reconstruction in both athletes and the lay population. However, isokinetic testing is time consuming and requires special testing equipment. Hypothesis: A single-jump test, regardless of leg dominance, may provide information regarding knee extension strength through the use of correlation analysis of jump height and peak torque of isokinetic muscle strength...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29146660/changing-physical-activity-behaviour-for-people-with-multiple-sclerosis-protocol-of-a-randomised-controlled-feasibility-trial-istep-ms
#16
Jennifer M Ryan, Jennifer Fortune, Andrea Stennett, Cherry Kilbride, Nana Anokye, Christina Victor, Wendy Hendrie, Mohamed Abdul, Lorraine DeSouza, Grace Lavelle, Debbie Brewin, Lee David, Meriel Norris
INTRODUCTION: Although physical activity may reduce disease burden, fatigue and disability, and improve quality of life among people with multiple sclerosis (MS), many people with MS are physically inactive and spend significant time in sedentary behaviour. Behaviour change interventions may assist people with MS to increase physical activity and reduce sedentary behaviour. However, few studies have investigated their effectiveness using objective measures of physical activity, particularly in the long term...
November 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/29145249/prospective-associations-between-measures-of-gross-and-fine-motor-coordination-in-infants-and-objectively-measured-physical-activity-and-sedentary-behavior-in-childhood
#17
Guillermo F López Sánchez, Genevieve Williams, Daniel Aggio, Domenico Vicinanza, Brendon Stubbs, Catherine Kerr, James Johnstone, Justine Roberts, Lee Smith
One important determinant of childhood physical activity and sedentary behavior may be that of motor development in infancy. The present analyses aimed to investigate whether gross and fine motor delays in infants were associated with objective and self-reported activity in childhood. Data were from the UK Millennium Cohort Study, a prospective cohort study, involving UK children born on or around the millennium (September 2000 and January 2002). When children were 9 months old, parents reported children's fine and gross motor-coordination, and at 7 years, sports club attendance and daily TV viewing time...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29144567/reliable-recognition-of-lying-sitting-and-standing-with-a-hip-worn-accelerometer
#18
Henri Vähä-Ypyä, Pauliina Husu, Jaana Suni, Tommi Vasankari, Harri Sievänen
Hip-worn accelerometers are widely used to estimate physical activity (PA), but the accuracy of acceleration-threshold based analysis is compromised when it comes to identifying stationary and sedentary behaviors, let alone classifying body postures into lying, sitting or standing. The purpose of this study was to devise a novel method for accurate classification of body posture using triaxial data from hip-worn accelerometer and to evaluate its performance in free-living conditions against a thigh-worn accelerometer...
November 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29144409/how-well-can-we-extract-the-permanent-displacement-from-low-cost-mems-accelerometers
#19
Jyh Cherng Jan, Wei-An Chao, Yih-Min Wu, Chien-Chih Chen, Cheng-Horng Lin
Following the recent establishment of a high-density seismic network equipped with low-cost micro-electro-mechanical system (MEMS) P-wave-alert-device (P-Alert) by the earthquake early warning (EEW) research group at the National Taiwan University, a large quantity of strong-motion records from moderate-magnitude earthquakes (ML > 6) around Taiwan has been accumulated. Using a data preprocessing scheme to recover the dynamic average embedded within the P-Alert data, we adopted an automatic baseline correction approach for the P-Alert accelerograms to determine the coseismic deformation (Cd)...
November 16, 2017: Sensors
https://www.readbyqxmd.com/read/29143320/accelerometer-measured-physical-activity-and-mortality-in-women-aged-63-to-99
#20
Michael J LaMonte, David M Buchner, Eileen Rillamas-Sun, Chongzhi Di, Kelley R Evenson, John Bellettiere, Cora E Lewis, I-Min Lee, Lesly F Tinker, Rebecca Seguin, Oleg Zaslovsky, Charles B Eaton, Marcia L Stefanick, Andrea Z LaCroix
OBJECTIVES: To prospectively examine associations between accelerometer-measured physical activity (PA) and mortality in older women, with an emphasis on light-intensity PA. DESIGN: Prospective cohort study with baseline data collection between March 2012 and April 2014. SETTING: Women's Health Initiative cohort in the United States. PARTICIPANTS: Community-dwelling women aged 63 to 99 (N = 6,382). MEASUREMENTS: Minutes per day of usual PA measured using hip-worn triaxial accelerometers, physical functioning measured using the Short Physical Performance Battery, mortality follow-up for a mean 3...
November 16, 2017: Journal of the American Geriatrics Society
keyword
keyword
96881
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"