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Vera Schellewald, Jens Kleinert, Rolf Ellegast
OBJECTIVE: The aim of this study was to investigate the use of two types of dynamic workstations (Deskbike, activeLife Trainer) and their effects on physiological activation in an occupational setting. METHODS: 30 employees were given access to the devices for 28 days. Frequency and duration of borrowing and use was recorded by a Chipcard-system. Physiological activation (energy expenditure, heart rate) while working in a seated position and using the workstations was measured with the activity tracker Fitbit Charge HR...
September 2018: Applied Ergonomics
Wonwoo Byun, Youngwon Kim, Timothy A Brusseau
OBJECTIVE: To determine the accuracy of the Fitbit Flex (FF) activity monitor for assessing preschoolers' physical activity (PA) and sedentary behavior (SED) in free-living conditions. STUDY DESIGN: This is a cross-sectional study of 27 preschoolers (41% girls; age, 4.9 years) who each wore the FF and ActiGraph GT3X+ (AG) simultaneously for 24 hours. Raw data from each device were temporally matched and summarized into estimates of SED, moderate-to-vigorous PA, and total PA after removing sleep and nonwear time periods...
May 10, 2018: Journal of Pediatrics
Luke G Silverman-Lloyd, Sina Kianoush, Michael J Blaha, Alyse B Sabina, Garth N Graham, Seth S Martin
BACKGROUND: Evidence that physical activity can curb smoking urges is limited in scope to acute effects and largely reliant on retrospective self-reported measures. Mobile health technologies offer novel mechanisms for capturing real-time data of behaviors in the natural environment. OBJECTIVE: This study aimed to explore this in a real-world longitudinal setting by leveraging mobile health tools to assess the association between objectively measured physical activity and concurrent smoking urges in a 12-week prospective observational study...
May 11, 2018: JMIR MHealth and UHealth
Charli Sargent, Michele Lastella, Georgia Romyn, Nathan Versey, Dean J Miller, Gregory D Roach
The validity of a commercially available wearable device for measuring total sleep time was examined in a sample of well-trained young athletes during night-time sleep periods and daytime naps. Participants wore a FitBit HR Charge on their non-dominant wrist and had electrodes attached to their face and scalp to enable polysomnographic recordings of sleep in the laboratory. The FitBit automatically detected 24/30 night-time sleep periods but only 6/20 daytime naps. Compared with polysomnography, the FitBit overestimated total sleep time by an average of 52 ± 152 min for night-time sleep periods, and by 4 ± 8 min for daytime naps...
May 11, 2018: Chronobiology International
Amy Cochran, Livia Belman-Wells, Melvin McInnis
BACKGROUND: Monitoring signs and symptoms in bipolar disorder (BP) is typically based on regular assessments from patient-clinician interactions. Mobile and wearable technology promises to make monitoring symptoms in BP easier, but little is known about how best to engage individuals with BP in monitoring symptoms. OBJECTIVE: The objective of this study was to provide the rationale and protocol for a randomized controlled trial that investigates engagement strategies for monitoring symptoms of BP, including the strategies of using activity trackers compared with self-reports and reviewing recorded symptoms weekly with an interviewer...
May 10, 2018: JMIR Research Protocols
Thea J M Kooiman, Martijn de Groot, Klaas Hoogenberg, Wim P Krijnen, Cees P van der Schans, Adriaan Kooy
The purpose of this study was to determine the efficacy of an online self-tracking program on physical activity, glycated hemoglobin, and other health measures in patients with type 2 diabetes. Seventy-two patients with type 2 diabetes were randomly assigned to an intervention or control group. All participants received usual care. The intervention group received an activity tracker (Fitbit Zip) connected to an online lifestyle program. Physical activity was analyzed in average steps per day from week 0 until 12...
May 4, 2018: Computers, Informatics, Nursing: CIN
Stephen Katz, Barbara L Marshall
This paper explores the technical turn to new ways of quantifying and standardizing measurements of age as these intersect with discourses of anti-aging and speculative futures of 'smart' quantified aging bodies. Often couched in a metaphorical language of 'smart', 'fit', 'boosting' and 'optimizing', the aging body is emerging as a node for data collection, monitoring, and surveillance. The research is located in the current literature that links aging, bodies and technologies, with specific extended examples of wearable devices such as fitness trackers and digital exercises such as brain games designed for memory performance...
June 2018: Journal of Aging Studies
Robyn M Lamont, Hannah L Daniel, Caitlyn L Payne, Sandra G Brauer
INTRODUCTION: The purpose of this study was to determine the accuracy of the Fitbit Charge HR™ and Garmin vívosmart® HR in measuring steps and reflecting intensity of activity in people with Parkinson's disease (PD). METHODS: Thirty-three people with mild-moderate PD performed six, two-minute indoor walks at their self-selected walking pace, and at target cadences of 60, 80, 100, 120 and 140 beats/min. A 500 m outdoor walk with terrain challenges was also performed...
April 24, 2018: Gait & Posture
Ryan S Bode, Richard J Brilli
No abstract text is available yet for this article.
May 2018: Pediatric Critical Care Medicine
Elissa Burton, Keith D Hill, Nicola T Lautenschlager, Cecilie Thøgersen-Ntoumani, Gill Lewin, Eileen Boyle, Erin Howie
BACKGROUND: Two-thirds of older Australians are sedentary. Fitness trackers have been popular with younger people and may encourage older adults to become more active. Older adults may have different gait patterns and as such it is important to establish whether fitness trackers are valid and reliable for this population. The aim of the study was to test the reliability and validity of two fitness trackers (Fitbit Flex and ChargeHR) by step count when worn by older adults. Reliability and validity were tested in two conditions: 1) in the laboratory using a two-minute-walk-test (2MWT) and 2) in a free-living environment...
May 3, 2018: BMC Geriatrics
Linnea A Polgreen, Christopher Anthony, Lucas Carr, Jacob E Simmering, Nicholas J Evans, Eric D Foster, Alberto M Segre, James F Cremer, Philip M Polgreen
INTRODUCTION: Activity-monitoring devices may increase activity, but their effectiveness in sedentary, diseased, and less-motivated populations is unknown. METHODS: Subjects with diabetes or pre-diabetes were given a Fitbit and randomized into three groups: Fitbit only, Fitbit with reminders, and Fitbit with both reminders and goal setting. Subjects in the reminders group were sent text-message reminders to wear their Fitbit. The goal-setting group was sent a daily text message asking for a step goal...
2018: PloS One
Nicholas Wendel, Chelsea E Macpherson, Karoline Webber, Kathryn Hendron, DeAngelis Tamara, Colon-Semenza Cristina, Terry Ellis
Background: Wearable, consumer-grade activity trackers have become widely available as a means of monitoring physical activity in the form of step counts. However, step counts may not be accurate in persons with Parkinson disease (PD) due to atypical gait characteristics. Objective: This study aimed to investigate the accuracy of 4 consumer-grade activity trackers in individuals with PD while ambulating during continuous and discontinuous walking tasks. Design: This study used a cross-sectional design...
April 30, 2018: Physical Therapy
Linda C Li, Eric C Sayre, Hui Xie, Ryan S Falck, John R Best, Teresa Liu-Ambrose, Navi Grewal, Alison M Hoens, Greg Noonan, Lynne M Feehan
BACKGROUND: Current practice guidelines emphasize the use of physical activity as the first-line treatment of knee osteoarthritis; however, up to 90% of people with osteoarthritis are inactive. OBJECTIVE: We aimed to assess the efficacy of a technology-enabled counseling intervention for improving physical activity in people with either a physician-confirmed diagnosis of knee osteoarthritis or having passed two validated criteria for early osteoarthritis. METHODS: We conducted a proof-of-concept randomized controlled trial...
April 30, 2018: Journal of Medical Internet Research
Nicola Straiton, Muaddi Alharbi, Adrian Bauman, Lis Neubeck, Janice Gullick, Ravinay Bhindi, Robyn Gallagher
OBJECTIVE: To understand the validity and reliability of consumer-grade activity trackers (consumer wearables) in older, community-dwelling adults. METHODS: A systematic review of studies involving adults aged over 65 years who underwent physical activity monitoring with consumer wearables. A total of 7 observational studies qualified, identified from electronic databases: MEDLINE, EMBASE, Cochrane Library and others (2014-2018). Validity was interpreted using correlation coefficients (CC) and percentage error for agreement between reference devices or gold-standard validation methods Reliability was compared using mean differences or ranges (under- or overestimation) of step count and activity time...
June 2018: Maturitas
Amerigo Rossi, Laena Frechette, Devin Miller, Eirwen Miller, Ciaran Friel, Anne Van Arsdale, Juan Lin, Viswanathan Shankar, Dennis Y S Kuo, Nicole S Nevadunsky
OBJECTIVE: Endometrial cancer survivors are the least physically active of all cancer survivor groups and exhibit up to 70% obesity. While studies suggest lifestyle interventions result in improved health outcomes, recruitment and availability of these programs are limited. The purpose was to evaluate the acceptability and validity of the Fitbit Alta™ physical activity monitor (Fitbit) for socioculturally diverse endometrial cancer survivors. METHODS: Thirty endometrial cancer survivors were given wrist-worn Fitbits to wear for 30 days...
April 21, 2018: Gynecologic Oncology
Junqing Xie, Dong Wen, Lizhong Liang, Yuxi Jia, Li Gao, Jianbo Lei
BACKGROUND: Wearable devices have attracted much attention from the market in recent years for their fitness monitoring and other health-related metrics; however, the accuracy of fitness tracking results still plays a major role in health promotion. OBJECTIVE: The aim of this study was to evaluate the accuracy of a host of latest wearable devices in measuring fitness-related indicators under various seminatural activities. METHODS: A total of 44 healthy subjects were recruited, and each subject was asked to simultaneously wear 6 devices (Apple Watch 2, Samsung Gear S3, Jawbone Up3, Fitbit Surge, Huawei Talk Band B3, and Xiaomi Mi Band 2) and 2 smartphone apps (Dongdong and Ledongli) to measure five major health indicators (heart rate, number of steps, distance, energy consumption, and sleep duration) under various activity states (resting, walking, running, cycling, and sleeping), which were then compared with the gold standard (manual measurements of the heart rate, number of steps, distance, and sleep, and energy consumption through oxygen consumption) and calculated to determine their respective mean absolute percentage errors (MAPEs)...
April 12, 2018: JMIR MHealth and UHealth
Nicola D Ridgers, Anna Timperio, Helen Brown, Kylie Ball, Susie Macfarlane, Samuel K Lai, Kara Richards, Kelly A Mackintosh, Melitta A McNarry, Megan Foster, Jo Salmon
BACKGROUND: Wearable activity trackers have the potential to be integrated into physical activity interventions, yet little is known about how adolescents use these devices or perceive their acceptability. OBJECTIVE: The aim of this study was to examine the usability and acceptability of a wearable activity tracker among adolescents. A secondary aim was to determine adolescents' awareness and use of the different functions and features in the wearable activity tracker and accompanying app...
April 11, 2018: JMIR MHealth and UHealth
Elisa S Arch, Jaclyn M Sions, John Horne, Barry A Bodt
BACKGROUND: Step counts, obtained via activity monitors, provide insight into activity level in the free-living environment. Accuracy assessments of activity monitors are limited among individuals with lower-limb amputations. OBJECTIVES: (1) To evaluate the step count accuracy of both monitors during forward-linear and complex walking and (2) compare monitor step counts in the free-living environment. STUDY DESIGN: Cross-sectional study. METHODS: Adult prosthetic users with a unilateral transtibial amputation were equipped with StepWatch and FitBit One™...
April 1, 2018: Prosthetics and Orthotics International
Gabrielle Turner-McGrievy, Danielle E Jake-Schoffman, Camelia Singletary, Marquivieus Wright, Anthony Crimarco, Michael D Wirth, Nitin Shivappa, Trisha Mandes, Delia Smith West, Sara Wilcox, Clemens Drenowatz, Andrew Hester, Matthew J McGrievy
BACKGROUND: Wearable physical activity (PA) trackers are becoming increasingly popular for intervention and assessment in health promotion research and practice. The purpose of this article is to present lessons learned from four studies that used commercial PA tracking devices for PA intervention or assessment, present issues encountered with their use, and provide guidelines for determining which tools to use. METHOD: Four case studies are presented that used PA tracking devices (iBitz, Zamzee, FitBit Flex and Zip, Omron Digital Pedometer, Sensewear Armband, and MisFit Flash) in the field-two used the tools for intervention and two used the tools as assessment methods...
April 1, 2018: Health Promotion Practice
Darcy Ummels, Emmylou Beekman, Kyra Theunissen, Susy Braun, Anna J Beurskens
BACKGROUND: Measuring physical activity with commercially available activity trackers is gaining popularity. People with a chronic disease can especially benefit from knowledge about their physical activity pattern in everyday life since sufficient physical activity can contribute to wellbeing and quality of life. However, no validity data are available for this population during activities of daily living. OBJECTIVE: The aim of this study was to investigate the validity of 9 commercially available activity trackers for measuring step count during activities of daily living in people with a chronic disease receiving physiotherapy...
April 2, 2018: JMIR MHealth and UHealth
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