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Validation of accelerometers

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https://www.readbyqxmd.com/read/28524725/a-sport-education-fitness-season-s-impact-on-students-fitness-levels-knowledge-and-in-class-physical-activity
#1
Jeffery Kurt Ward, Peter A Hastie, Danielle D Wadsworth, Shelby Foote, Sheri J Brock, Nikki Hollett
PURPOSE: The purpose of this study was to determine the extent to which a sport education season of fitness could provide students with recommended levels of in-class moderate-to-vigorous physical activity (MVPA) while also increasing students' fitness knowledge and fitness achievement. METHOD: One hundred and sixty-six 5th-grade students (76 boys, 90 girls) participated in a 20-lesson season called "CrossFit Challenge" during a 4-week period. The Progressive Aerobic Cardiovascular Endurance Run, push-ups, and curl-ups tests of the FITNESSGRAM® were used to assess fitness at pretest and posttest, while fitness knowledge was assessed through a validated, grade-appropriate test of health-related fitness knowledge (HRF)...
May 19, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28516967/body-worn-triaxial-accelerometer-coherence-and-reliability-related-to-static-posturography-in-unilateral-vestibular-failure
#2
M Alessandrini, A Micarelli, A Viziano, I Pavone, G Costantini, D Casali, F Paolizzo, G Saggio
Since changes in vestibular function may be one cause of disequilibrium, major advances in measuring postural control and sensory integration in vestibular impairments have been achieved by using posturography. However, in order to overcome problems related to this type of technology, body-worn accelerometers (ACC) have been proposed as a portable, low-cost alternative to posturography for measurements of postural sway in a friendly and ecologic environment. Due to the fact that no study to date has shown the experimental validity of ACC-based measures of body sway with respect to posturography for subjects with vestibular deficits, the aim of the present study was: i) to develop and validate a practical tool that can allow clinicians to measure postural sway derangements in an otoneurological setting by ACC, and ii) to provide reliable, sensitive and accurate automatic analysis of sway that could help in discriminating unilateral vestibular failure (UVF) patients...
June 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28511695/absolute-and-relative-accelerometer-thresholds-for-determining-the-association-between-physical-activity-and-metabolic-syndrome-in-the-older-adults-the-generation-100-study
#3
Nina Zisko, Javaid Nauman, Silvana Bucher Sandbakk, Nils Petter Aspvik, Øyvind Salvesen, Trude Carlsen, Hallgeir Viken, Jan Erik Ingebrigtsen, Ulrik Wisløff, Dorthe Stensvold
BACKGROUND: When assessing population adherence to physical activity (PA) recommendation using accelerometers, absolute intensity threshold definition is applied despite having limited validity in those with low cardiorespiratory fitness (CRF), who are unable to reach them (e.g older adults). Thus, PA thresholds relative to CRF may be an alternative approach. We compared the proportion of the older adults meeting the PA recommendation when PA is assessed using absolute versus sex-and-CRF-adjusted (relative) accelerometer thresholds and determined the association between relative versus absolute moderate PA (MPA), vigorous PA (VPA) and moderate-to-vigorous PA (MVPA) and metabolic syndrome (MetS)...
May 16, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28511193/a-validation-study-of-the-fitbit-one-in-daily-life-using-different-time-intervals
#4
Anouk Middelweerd, Hidde P VAN DER Ploeg, Aart VAN Halteren, Jos W R Twisk, Johannes Brug, Saskia J Te Velde
PURPOSE: Accelerometer-based wearables can provide the user with real-time feedback through the device's interface and the mobile platforms. Few studies have focused on the minute-by-minute validity of wearables, which is essential for high-quality real-time feedback. This study aims to assess the validity of the Fitbit One compared with the ActiGraph GT3x + for assessing physical activity (i.e., steps, time spent in moderate, vigorous, and moderate-vigorous physical activity) in young adults using traditional time intervals (i...
June 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28504054/exploring-the-challenges-in-obtaining-physical-activity-data-from-women-using-hip-worn-accelerometers
#5
Wendy J O'Brien, Sarah P Shultz, Ridvan T Firestone, Lily George, Bernhard H Breier, Rozanne Kruger
Quality objective physical activity data are required to inform physical activity-based health improvement initiatives, however, various challenges undermine acquisition of such data. We examined the efficacy and challenges of a hip-worn accelerometry protocol in women. Specific objectives included determining accelerometer-wear-compliance rates and understanding the barriers and acceptability of wearing accelerometers. Healthy New Zealand women (n = 406) of three ethnicities (Māori (indigenous New Zealander), Pacific, European) aged 16-45 years (30...
May 15, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28503535/validity-and-reliability-evidence-of-the-physical-activity-level-screening-for-preschoolers-with-developmental-delays-and-or-disabilities
#6
Changwoong Park, So-Yeun Kim, Lauriece L Zittel, Marilyn Looney
Psychometric properties of the physical activity level screening (PALS) for preschoolers with a developmental delay and/or a disability were examined in this study. The mean age of participants (16 boys and 14 girls) was 54.9 months (standard deviation, 10.4). Each participant wore one Actical accelerometer and was filmed for 20 min during the active play time. Intrarater and interrater reliability, and validity of the PALS data were examined. The proportion of agreement for intrarater was 87.5% and 85.6% for interrater reliability...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28501418/comparability-and-feasibility-of-wrist-and-hip-worn-accelerometers-in-free-living-adolescents
#7
Joseph J Scott, Alex V Rowlands, Dylan P Cliff, Philip J Morgan, Ronald C Plotnikoff, David R Lubans
OBJECTIVE: To determine the comparability and feasibility of wrist- and hip-worn accelerometers among free-living adolescents. DESIGN: 89 adolescents (age=13-14years old) from eight secondary schools in New South Wales (NSW), Australia wore wrist-worn GENEActiv and hip-worn ActiGraph (GT3X+) accelerometers simultaneously for seven days and completed an accelerometry behavior questionnaire. METHODS: Bivariate correlations between the wrist- and hip-worn out-put were used to determine concurrent validity...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28490620/physical-activity-evaluation-in-children-with-congenital-heart-disease
#8
REVIEW
Christine Voss, Kevin C Harris
Significant advances in the management of children with congenital heart disease (CHD) have resulted in marked improvements in survival and life expectancy. Thus, there is an increased emphasis on promoting physical activity to optimise healthy development and long-term cardiovascular health. Evaluation of physical activity levels as part of ongoing clinical care is recommended to facilitate physical activity counselling and/or exercise prescription. Physical activity is a complex health behaviour that is challenging to evaluate...
May 10, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28483930/comparison-of-four-fitbit-and-jawbone-activity-monitors-with-a-research-grade-actigraph-accelerometer-for-estimating-physical-activity-and-energy-expenditure
#9
Mary T Imboden, Michael B Nelson, Leonard A Kaminsky, Alexander Hk Montoye
BACKGROUND/AIM: Consumer-based physical activity (PA) monitors have become popular tools to track PA behaviours. Currently, little is known about the validity of the measurements provided by consumer monitors. We aimed to compare measures of steps, energy expenditure (EE) and active minutes of four consumer monitors with one research-grade accelerometer within a semistructured protocol. METHODS: Thirty men and women (18-80 years old) wore Fitbit One (worn at the waist), Fitbit Zip (waist), Fitbit Flex (wrist), Jawbone UP24 (wrist) and one waist-worn research-grade accelerometer (ActiGraph) while participating in an 80 min protocol...
May 8, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28483558/evaluation-of-the-activpal-accelerometer-for-physical-activity-and-energy-expenditure-estimation-in-a-semi-structured-setting
#10
Alexander H K Montoye, James M Pivarnik, Lanay M Mudd, Subir Biswas, Karin A Pfeiffer
OBJECTIVES: Evaluate accuracy of the activPAL and its proprietary software for prediction of time spent in physical activity (PA) intensities (sedentary, light, and moderate-to-vigorous) and energy expenditure (EE) and compare its accuracy to that of a machine learning model (ANN) developed from raw activPAL data. DESIGN: Semi-structured accelerometer validation in a laboratory setting. METHODS: Participants (n=41 [20 male]; age=22.0±4.2) completed a 90-min protocol performing 13 activities for 3-10min each and choosing activity order, duration, and intensity...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28481750/lab-based-validation-of-different-data-processing-methods-for-wrist-worn-actigraph-accelerometers-in-young-adults
#11
Laura D Ellingson, Paul R Hibbing, Youngwon Kim, Laura A Frey-Law, Pedro F Saint-Maurice, Gregory J Welk
The wrist is increasingly being used as the preferred site for objectively assessing physical activity but the relative accuracy of processing methods for wrist data has not been determined. OBJECTIVE: This study evaluates the validity of four processing methods for wrist-worn ActiGraph (AG) data against energy expenditure (EE) measured using a portable metabolic analyzer (OM; Oxycon mobile) and the Compendium of physical activity. APPROACH: Fifty-one adults (ages 18-40) completed 15 activities ranging from sedentary to vigorous in a laboratory setting while wearing an AG and the OM...
May 8, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28464833/light-and-sporadic-physical-activity-overlooked-by-current-guidelines-makes-older-women-more-active-than-older-men
#12
Shiho Amagasa, Noritoshi Fukushima, Hiroyuki Kikuchi, Tomoko Takamiya, Koichiro Oka, Shigeru Inoue
BACKGROUND: Men are generally believed to be more physically active than women when evaluated using current physical activity (PA) guidelines, which count only moderate-to-vigorous physical activity (MVPA) in bouts lasting at least 10 min. However, it remains unclear men are truly more physically active provided that all-intensity PA are evaluated. This population based cross-sectional study aimed to examine gender differences in patterns of objectively-assessed PA in older adults. METHODS: One thousand two hundred ten community-dwelling Japanese older adults who were originally randomly selected from residential registry of three municipalities were asked to respond a questionnaire and wear an accelerometer (HJA-350IT, Omron Healthcare)...
May 2, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28455548/feasibility-of-objectively-measured-physical-activity-and-sedentary-behavior-in-patients-with-malignant-pleural-effusion
#13
Emily Jeffery, Yc Gary Lee, Joanne McVeigh, Leon Straker, Troy Wooding, Robert U Newton, Carolyn Peddle-McIntyre
PURPOSE: Malignant pleural effusion (MPE) affects 1 million people worldwide annually and can significantly impair physical activity. Accelerometry is a validated method of objectively assessing physical activity. The purpose of this study was to determine the compliance in patients with MPE to accelerometry and describe their activity. METHODS: Patients with MPE wore an Actigraph GT3X accelerometer over a 7-day continuous wear protocol. Compliance was measured as the percent of patients who had ≥4 valid days (i...
April 28, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28448531/application-of-the-transtheoretical-model-to-sedentary-behaviors-and-its-association-with-physical-activity-status
#14
Ho Han, Kelley Pettee Gabriel, Harold Willis Kohl
BACKGROUND: The Transtheoretical Model (TTM) is a successful framework for guiding behavior change programs for several health behaviors, yet its application to reduce of sedentary behavior has been neglected. In addition, no data exist regarding the association between determinants of sedentary behaviors based on the TTM and physical activity behavior. The purpose of this study was to investigate college students' stages of motivational readiness to avoid sedentary behaviors and relevant psychological determinants using newly developed TTM questionnaires and to identify the association between current physical activity and sedentary behaviors based on TTM constructs...
2017: PloS One
https://www.readbyqxmd.com/read/28445485/validity-and-reliability-of-the-physical-activity-questionnaire-for-children-paq-c-and-adolescents-paq-a-in-individuals-with-congenital-heart-disease
#15
Christine Voss, Paige H Dean, Ross F Gardner, Stephanie L Duncombe, Kevin C Harris
OBJECTIVE: To assess the criterion validity, internal consistency, reliability and cut-point for the Physical Activity Questionnaire for Children (PAQ-C) and Adolescents (PAQ-A) in children and adolescents with congenital heart disease-a special population at high cardiovascular risk in whom physical activity has not been extensively evaluated. METHODS: We included 84 participants (13.6±2.9 yrs, 50% female) with simple (37%), moderate (31%), or severe congenital heart disease (27%), as well as cardiac transplant recipients (6%), from BC Children's Hospital, Canada...
2017: PloS One
https://www.readbyqxmd.com/read/28445227/a-review-of-player-monitoring-approaches-in-basketball-current-trends-and-future-directions
#16
Jordan L Fox, Aaron T Scanlan, Robert Stanton
Effective monitoring of players in team-sports such as basketball requires an understanding of the external demands and internal responses as they relate to training phases and competition. Monitoring of external demands and internal responses allows coaching staff to determine the dose-response associated with the imposed training load, and subsequently, if players are adequately prepared for competition. This review discusses measures reported in the literature for monitoring the external demands and internal responses of basketball players during training and competition...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28443059/algorithm-for-turning-detection-and-analysis-validated-under-home-like-conditions-in-patients-with-parkinson-s-disease-and-older-adults-using-a-6-degree-of-freedom-inertial-measurement-unit-at-the-lower-back
#17
Minh H Pham, Morad Elshehabi, Linda Haertner, Tanja Heger, Markus A Hobert, Gert S Faber, Dina Salkovic, Joaquim J Ferreira, Daniela Berg, Álvaro Sanchez-Ferro, Jaap H van Dieën, Walter Maetzler
INTRODUCTION: Aging and age-associated disorders such as Parkinson's disease (PD) are often associated with turning difficulties, which can lead to falls and fractures. Valid assessment of turning and turning deficits specifically in non-standardized environments may foster specific treatment and prevention of consequences. METHODS: Relative orientation, obtained from 3D-accelerometer and 3D-gyroscope data of a sensor worn at the lower back, was used to develop an algorithm for turning detection and qualitative analysis in PD patients and controls in non-standardized environments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28441748/convergent-validity-of-a-wearable-sensor-system-for-measuring-sub-task-performance-during-the-timed-up-and-go-test
#18
James Beyea, Chris A McGibbon, Andrew Sexton, Jeremy Noble, Colleen O'Connell
BACKGROUND: The timed-up-and-go test (TUG) is one of the most commonly used tests of physical function in clinical practice and for research outcomes. Inertial sensors have been used to parse the TUG test into its composite phases (rising, walking, turning, etc.), but have not validated this approach against an optoelectronic gold-standard, and to our knowledge no studies have published the minimal detectable change of these measurements. METHODS: Eleven adults performed the TUG three times each under normal and slow walking conditions, and 3 m and 5 m walking distances, in a 12-camera motion analysis laboratory...
April 23, 2017: Sensors
https://www.readbyqxmd.com/read/28436909/pulse-transit-time-measurement-using-seismocardiogram-photoplethysmogram-and-acoustic-recordings-evaluation-and-comparison
#19
Chenxi Yang, Negar Tavassolian
This work proposes a novel method of pulse transit time measurement. The proximal arterial location data is collected from seismocardiogram (SCG) recordings by placing a MEMS accelerometer on the chest wall. The distal arterial location data is recorded using an acoustic sensor placed inside the ear. The performance of distal location recordings is evaluated by comparing SCG-acoustic and SCG-Photoplethysmogram (PPG) measurements. PPG and acoustic performances under motion noise are also compared. Experimental results suggest comparable performances for the acoustic-based and PPG-based devices...
April 24, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28432935/accelerometry-based-assessment-and-detection-of-early-signs-of-balance-deficits
#20
Heidi Similä, Milla Immonen, Miikka Ermes
Falls are the cause for more than half of the injury-related hospitalizations among older people. Accurate assessment of individuals' fall risk could enable targeted interventions to reduce the risk. This paper presents a novel method for using wearable accelerometers to detect early signs of deficits in balance from gait. Gait acceleration data were analyzed from 35 healthy female participants (73.86±5.40 years). The data were collected with waist-mounted accelerometer and the participants performed three supervised balance tests: Berg Balance Scale (BBS), Timed-Up-and-Go (TUG) and 4m walk...
April 13, 2017: Computers in Biology and Medicine
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