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https://www.readbyqxmd.com/read/29124455/measuring-and-understanding-adherence-in-a-home-based-exercise-intervention-during-chemotherapy-for-early-breast-cancer
#1
K A Nyrop, A M Deal, S K Choi, C W Wagoner, J T Lee, A Wood, C Anders, L A Carey, E C Dees, T A Jolly, K E Reeder-Hayes, H B Muss
PURPOSE: Ensuring and measuring adherence to prescribed exercise regimens are fundamental challenges in intervention studies to promote exercise in adults with cancer. This study reports exercise adherence in women who were asked to walk 150 min/week throughout chemotherapy treatment for early breast cancer. Participants were asked to wear a Fitbit(TM) throughout their waking hours, and Fitbit steps were uploaded directly into study computers. METHODS: Descriptive statistics are reported, and both unadjusted and multivariable linear regression models were used to assess associations between participant characteristics, breast cancer diagnosis, treatment, chemotherapy toxicities, and patient-reported symptoms with average Fitbit steps/week...
November 9, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29121833/fitbit-activity-trackers-interrupt-workplace-sedentary-behavior-a-new-application
#2
N A Guitar, A MacDougall, D M Connelly, E Knight
This study investigated whether Fitbit devices can reduce sedentary behavior among employees in the workplace. Participants were asked to wear Fitbits during 8-hour work shifts, 5 days per week, for 8 weeks. They were instructed to stand at least once every 30 minutes throughout the workday. The goal of the study was to determine whether standing once every 30 minutes was a feasible strategy for reducing sedentary workplace behavior. On average, participants completed 36 of 40 workdays using Fitbits. The number of times participants stood during an 8-hour workday averaged 12 stands per day (maximum 16 stands per day)...
November 1, 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/29117912/measurement-of-physical-activity-in-the-pre-and-early-post-operative-period-after-total-knee-arthroplasty-for-osteoarthritis-using-a-fitbit-flex-device
#3
Joshua Twiggs, Lucy Salmon, Elizabeth Kolos, Emily Bogue, Brad Miles, Justin Roe
Total knee arthroplasty (TKA) is a standard treatment for patients with end stage knee Osteoarthritis (OA) to reduce pain and restore function. The aim of this study was to assess pre- and early post-operative physical activity (PA) with Fitbit Flex devices for patients with OA undergoing TKA and determine any benchmarks for expected post-operative activity. Significant correlations of pre-operative step count, post-operative step count, Body Mass Index (BMI) and Short Form 12 Physical Component Summaries (SF-12 PCS) were found...
November 6, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29101092/development-and-validation-of-a-taxonomy-for-characterizing-measurements-in-health-self-quantification
#4
Manal Almalki, Kathleen Gray, Fernando Martin-Sanchez
BACKGROUND: The use of wearable tools for health self-quantification (SQ) introduces new ways of thinking about one's body and about how to achieve desired health outcomes. Measurements from individuals, such as heart rate, respiratory volume, skin temperature, sleep, mood, blood pressure, food consumed, and quality of surrounding air can be acquired, quantified, and aggregated in a holistic way that has never been possible before. However, health SQ still lacks a formal common language or taxonomy for describing these kinds of measurements...
November 3, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29081984/validity-and-reliability-of-the-fitbit-zip-as-a-measure-of-preschool-children-s-step-count
#5
Catherine A Sharp, Kelly A Mackintosh, Mihela Erjavec, Duncan M Pascoe, Pauline J Horne
OBJECTIVES: Validation of physical activity measurement tools is essential to determine the relationship between physical activity and health in preschool children, but research to date has not focused on this priority. The aims of this study were to ascertain inter-rater reliability of observer step count, and interdevice reliability and validity of Fitbit Zip accelerometer step counts in preschool children. METHODS: Fifty-six children aged 3-4 years (29 girls) recruited from 10 nurseries in North Wales, UK, wore two Fitbit Zip accelerometers while performing a timed walking task in their childcare settings...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29056608/acceptability-of-the-fitbit-in-behavioural-activation-therapy-for-depression-a-qualitative-study
#6
Jenny Chum, Min Suk Kim, Laura Zielinski, Meha Bhatt, Douglas Chung, Sharon Yeung, Kathryn Litke, Kathleen McCabe, Jeff Whattam, Laura Garrick, Laura O'Neill, Stefanie Goyert, Colleen Merrifield, Yogita Patel, Zainab Samaan
INTRODUCTION: Major depressive disorder is characterised by low mood and poor motivation. Literature suggests that increased physical activity has positive effects on alleviating depression. Fitness-tracking devices may complement behavioural activation (BA) therapy to improve physical activity and mental health in patients with depression. OBJECTIVES: To understand patients' perceived benefit from the Fitbit and explore themes associated with patient experiences...
November 2017: Evidence-based Mental Health
https://www.readbyqxmd.com/read/29055881/fitbit-charge-hr-wireless-heart-rate-monitor-validation-study-conducted-under-free-living-conditions
#7
Alexander Wilhelm Gorny, Seaw Jia Liew, Chuen Seng Tan, Falk Müller-Riemenschneider
BACKGROUND: Many modern smart watches and activity trackers feature an optical sensor that estimates the wearer's heart rate. Recent studies have evaluated the performance of these consumer devices in the laboratory. OBJECTIVE: The objective of our study was to examine the accuracy and sensitivity of a common wrist-worn tracker device in measuring heart rates and detecting 1-min bouts of moderate to vigorous physical activity (MVPA) under free-living conditions...
October 20, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/29049964/the-bit-doesn-t-fit-evaluation-of-a-commercial-activity-tracker-at-slower-walking-speeds
#8
Christopher K Wong, Helena M Mentis, Ravi Kuber
Accelerometer-based commercial activity trackers are a low-cost and convenient method for monitoring and assessing health measures such as gait. However, the accuracy of these activity trackers in slow walking conditions on a minute-by-minute basis is largely unknown. In this study, the accuracy of a hip-worn commercial activity tracker (FitBit Ultra) was examined through step counts. Accuracy was evaluated through four minute trials of treadmill walking at speeds representative of older adults (0.9, 1.1, and 1...
October 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29018543/validity-of-fitbit-s-active-minutes-as-compared-with-a-research-grade-accelerometer-and-self-reported-measures
#9
Wayne Brewer, Brian T Swanson, Alexis Ortiz
OBJECTIVES: The main purpose of the study was to assess the validity between the Fitbit and ActiGraph GT3X+ accelerometer. The specific aims were to determine the: (1) concurrent validity between the various models of the Fitbit and the GTX3+ accelerometer as the criterion measure for: number of steps and active minutes averaged over a single-day and 7-day period; (2) validity of the two devices with the International Physical Activity Questionnaire (IPAQ) for the number of daily active minutes performed...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29018355/criterion-validity-of-commercially-available-physical-activity-tracker-to-estimate-step-count-covered-distance-and-energy-expenditure-during-sports-conditions
#10
Yvonne Wahl, Peter Düking, Anna Droszez, Patrick Wahl, Joachim Mester
Background: In the past years, there was an increasing development of physical activity tracker (Wearables). For recreational people, testing of these devices under walking or light jogging conditions might be sufficient. For (elite) athletes, however, scientific trustworthiness needs to be given for a broad spectrum of velocities or even fast changes in velocities reflecting the demands of the sport. Therefore, the aim was to evaluate the validity of eleven Wearables for monitoring step count, covered distance and energy expenditure (EE) under laboratory conditions with different constant and varying velocities...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28968241/pilot-validation-of-ambulatory-activity-monitors-for-sleep-measurement-in-huntington-s-disease-gene-carriers
#11
Svetlana Maskevich, Ria Jumabhoy, Pierre D M Dao, Julie C Stout, Sean P A Drummond
Sleep disturbance occurs early in Huntington's disease (HD). Consumer- and research-grade activity monitors may enable routine assessment of sleep disturbances in HD. We compared Actiwatch Spectrum Pro, Jawbone UP2 and Fitbit One to the gold standard, polysomnography, in four late presymptomatic and three early HD participants. Compared to polysomnography, all ambulatory monitors overestimated total sleep time by >60 minutes and sleep efficiency by ∼15%. Thus, for assessment of specific sleep parameters in HD, none of the activity monitors are sufficiently accurate to replace polysomnography, although they may be sufficient for estimating overall sleep-wake patterns...
2017: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/28954563/applicability-of-consumer-activity-monitor-data-in-marathon-events-an-exploratory-study
#12
Valentino Constantinou, Ashley E Felber, Jennifer L Chan
Emerging opportunities to measure individual and population-level health data with activity monitors during recreational running activities may set the stage for new research possibilities in mass participation running events and marathon medicine. This study explores the applicability of consumer activity monitor data in a preliminary study for future marathon health research with a cohort of 12 (n = 12) participants completing a 3.379 km walking or running course. This study explored the feasibility of collecting pace and distance data from Fitbit brand consumer activity monitors, from access to user data to reporting of data characteristics and data analysis...
September 28, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28953257/analyzing-sensor-based-time-series-data-to-track-changes-in-physical-activity-during-inpatient-rehabilitation
#13
Gina Sprint, Diane Cook, Douglas Weeks, Jordana Dahmen, Alyssa La Fleur
Time series data collected from sensors can be analyzed to monitor changes in physical activity as an individual makes a substantial lifestyle change, such as recovering from an injury or illness. In an inpatient rehabilitation setting, approaches to detect and explain changes in longitudinal physical activity data collected from wearable sensors can provide value as a monitoring, research, and motivating tool. We adapt and expand our Physical Activity Change Detection (PACD) approach to analyze changes in patient activity in such a setting...
September 27, 2017: Sensors
https://www.readbyqxmd.com/read/28918547/adaptive-step-goals-and-rewards-a-longitudinal-growth-model-of-daily-steps-for-a-smartphone-based-walking-intervention
#14
Elizabeth V Korinek, Sayali S Phatak, Cesar A Martin, Mohammad T Freigoun, Daniel E Rivera, Marc A Adams, Pedja Klasnja, Matthew P Buman, Eric B Hekler
Adaptive interventions are an emerging class of behavioral interventions that allow for individualized tailoring of intervention components over time to a person's evolving needs. The purpose of this study was to evaluate an adaptive step goal + reward intervention, grounded in Social Cognitive Theory delivered via a smartphone application (Just Walk), using a mixed modeling approach. Participants (N = 20) were overweight (mean BMI = 33.8 ± 6.82 kg/m(2)), sedentary adults (90% female) interested in participating in a 14-week walking intervention...
September 16, 2017: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28895585/habitual-sleep-duration-and-sleep-duration-variation-are-independently-associated-with-body-mass-index
#15
X Xu, M P Conomos, O Manor, J E Rohwer, A T Magis, J C Lovejoy
BACKGROUND: Sleep plays a vital role in maintaining homeostasis and promoting health. Previous studies show that shorter sleep duration is associated with elevated body mass index (BMI) and other cardiovascular risk factors. The goal of this study was to investigate the effects of habitual sleep duration and nightly sleep duration variation based on daily device-recorded data on BMI and obesity-related biomarkers. METHOD: 748 individuals (50.6% females, 85.4% European-Americans, average age: 49...
September 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28807889/activity-trackers-implement-different-behavior-change-techniques-for-activity-sleep-and-sedentary-behaviors
#16
Mitch Duncan, Beatrice Murawski, Camille E Short, Amanda L Rebar, Stephanie Schoeppe, Stephanie Alley, Corneel Vandelanotte, Morwenna Kirwan
BACKGROUND: Several studies have examined how the implementation of behavior change techniques (BCTs) varies between different activity trackers. However, activity trackers frequently allow tracking of activity, sleep, and sedentary behaviors; yet, it is unknown how the implementation of BCTs differs between these behaviors. OBJECTIVE: The aim of this study was to assess the number and type of BCTs that are implemented by wearable activity trackers (self-monitoring systems) in relation to activity, sleep, and sedentary behaviors and to determine whether the number and type of BCTs differ between behaviors...
August 14, 2017: Interactive Journal of Medical Research
https://www.readbyqxmd.com/read/28801304/how-accurate-is-your-activity-tracker-a-comparative-study-of-step-counts-in-low-intensity-physical-activities
#17
Parastoo Alinia, Chris Cain, Ramin Fallahzadeh, Armin Shahrokni, Diane Cook, Hassan Ghasemzadeh
BACKGROUND: As commercially available activity trackers are being utilized in clinical trials, the research community remains uncertain about reliability of the trackers, particularly in studies that involve walking aids and low-intensity activities. While these trackers have been tested for reliability during walking and running activities, there has been limited research on validating them during low-intensity activities and walking with assistive tools. OBJECTIVE: The aim of this study was to (1) determine the accuracy of 3 Fitbit devices (ie, Zip, One, and Flex) at different wearing positions (ie, pants pocket, chest, and wrist) during walking at 3 different speeds, 2...
August 11, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28794802/healthy-lifestyle-intervention-for-adult-clinic-patients-with-type-2-diabetes-mellitus
#18
Steven S Coughlin, Christos Hatzigeorgiou, Judith Anglin, Ding Xie, Gina M Besenyi, Gianluca De Leo, Jessica Stewart, Thad Wilkins
BACKGROUND: Diet and exercise therapy have been reported to be effective in improving blood glucose control and are an important part of treatment of type 2 diabetes mellitus. OBJECTIVE: The goal of this study is to examine the efficacy of a healthy lifestyle intervention for adult clinic patients with type 2 diabetes mellitus, as measured by Hgb-A1c, cardiovascular indicators, physical activity, weight, and BMI. Also of interest are optimal strategies for subject recruitment, the number of intervention sessions attended, and participant use of the Fitbit watch to monitor their physical activity and track food and beverage consumption...
2017: Diabetes Management
https://www.readbyqxmd.com/read/28777710/step-count-accuracy-and-reliability-of-two-activity-tracking-devices-in-people-after-stroke
#19
Samuel D Schaffer, Simon D Holzapfel, George Fulk, Pamela Rogers Bosch
BACKGROUND/PURPOSE: The increasing popularity of activity tracking devices presents an opportunity to monitor physical activity in patients after stroke. We sought to determine the reliability and accuracy of the Garmin Vivofit and Fitbit Zip for adults after stroke. METHODS: Twenty-four participants with stroke-induced hemiparesis wore a Fitbit Zip on the nonparetic hip and Garmin Vivofits on both wrists during a 6-minute walk test to determine the accuracy of the devices against video-determined step counts...
August 4, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28768612/short-term-efficacy-of-an-innovative-mobile-phone-technology-based-intervention-for-weight-management-for-overweight-and-obese-adolescents-pilot-study
#20
Jyu-Lin Chen, Claudia M Guedes, Bruce A Cooper, Audrey E Lung
BACKGROUND: In the United States, approximately one-third of adolescents are now overweight or obese, and one in six is obese. This financial cost and the larger nonfinancial costs of obesity make obesity prevention and management for adolescents imperative for the health of the nation. However, primary care visits are typically brief, and primary care providers may lack adequate resources to help overweight or obese adolescents to manage weight issues. To augment the efficacy of primary care visits for adolescent weight management, mobile phone technology can be used as an adjunct treatment that provides additional opportunities for encouraging improvement in lifestyle, attainment, and maintenance of healthy weight...
August 2, 2017: Interactive Journal of Medical Research
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