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https://www.readbyqxmd.com/read/29049964/the-bit-doesn-t-fit-evaluation-of-a-commercial-activity-tracker-at-slower-walking-speeds
#1
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/29048553/are-preschoolers-meeting-the-mark-comparing-the-dietary-activity-and-sleep-behaviors-of-preschoolers-with-obesity-to-national-recommendations
#2
Cathleen Odar Stough, Mary Beth McCullough, Shannon L Robson, Christopher Bolling, Stephanie Spear Filigno, Jessica C Kichler, Cynthia Zion, Lisa M Clifford, Stacey L Simon, Richard F Ittenbach, Lori J Stark
Objective: National health organizations and expert committees have issued recommendations for health behaviors related to obesity risk. Behavioral and family-based weight management interventions for preschoolers often target improving adherence to these recommendations, but it is unknown how the health behaviors of preschoolers with obesity enrolled in weight control treatments (WCTs) compare with these guidelines. In this study, the dietary intake, activity, and sleep behaviors of preschoolers with obesity enrolled in a family-based behavioral WCT are described and compared with national health behavior recommendations...
October 17, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29046890/a-comparison-of-passive-and-active-estimates-of-sleep-in-a-cohort-with-schizophrenia
#3
Patrick Staples, John Torous, Ian Barnett, Kenzie Carlson, Luis Sandoval, Matcheri Keshavan, Jukka-Pekka Onnela
Sleep abnormalities are considered an important feature of schizophrenia, yet convenient and reliable sleep monitoring remains a challenge. Smartphones offer a novel solution to capture both self-reported and objective measures of sleep in schizophrenia. In this three-month observational study, 17 subjects with a diagnosis of schizophrenia currently in treatment downloaded Beiwe, a platform for digital phenotyping, on their personal Apple or Android smartphones. Subjects were given tri-weekly ecological momentary assessments (EMAs) on their own smartphones, and passive data including accelerometer, GPS, screen use, and anonymized call and text message logs was continuously collected...
2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/29045323/effects-of-a-long-term-physical-activity-program-on-activity-patterns-in-older-adults
#4
Amal A Wanigatunga, Catrine Tudor-Locke, Robert S Axtell, Nancy W Glynn, Abby C King, Mary M McDermott, Roger A Fielding, Xiaomin Lu, Marco Pahor, Todd M Manini
PURPOSE: To examine the effect of a long-term structured physical activity (PA) intervention on accelerometer-derived metrics of activity pattern changes in mobility-impaired older adults. METHODS: Participants were randomized to either a PA or health education (HE) program. The PA intervention included a walking regimen with strength, flexibility, and balance training. The HE program featured health-related discussions and a brief upper body stretching routine...
November 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29045051/minimum-performance-on-clinical-tests-of-physical-function-to-predict-walking-6000-steps-day-in-knee-osteoarthritis-an-observational-study
#5
Hiral Master, Louise M Thoma, Meredith B Christiansen, Emily Polakowski, Laura A Schmitt, Daniel K White
OBJECTIVE: Evidence of physical function difficulties, such as difficulty rising from a chair, may limit daily walking for people with knee osteoarthritis (OA). The purpose of this study was to identify minimum performance thresholds on clinical tests of physical function predictive to walk ≥6000 steps/day. This benchmark is known to discriminate people with knee OA who develop functional limitation over time from those who do not. METHODS: Using data from the Osteoarthritis Initiative, we quantified daily walking as average steps/day from an accelerometer (Actigraph GTM1) worn for >10 hours/day over one week...
October 17, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29044441/physical-activity-of-canadian-children-and-youth-2007-to-2015
#6
Rachel C Colley, Valerie Carson, Didier Garriguet, Ian Janssen, Karen C Roberts, Mark S Tremblay
BACKGROUND: This study describes and compares the percentages of Canadian children and youth who adhere to different operational definitions of the moderate-to-vigorous physical activity (MVPA) recommendation of 60 minutes per day. DATA AND METHODS: Data for 6- to 17-year-olds (n = 5,608) were collected from 2007 through 2015 as part of the Canadian Health Measures Survey. MVPA was measured using the Actical accelerometer. The MVPA recommendation was operationalized as accumulating 60 minutes of MVPA every day, on most days, and on average...
October 18, 2017: Health Reports
https://www.readbyqxmd.com/read/29042429/both-light-intensity-and-moderate-to-vigorous-physical-activity-measured-by-accelerometry-are-favorably-associated-with-cardiometabolic-risk-factors-in-older-women-the-objective-physical-activity-and-cardiovascular-health-opach-study
#7
Michael J LaMonte, Cora E Lewis, David M Buchner, Kelly R Evenson, Eileen Rillamas-Sun, Chongzhi Di, I-Min Lee, John Bellettiere, Marcia L Stefanick, Charles B Eaton, Barbara V Howard, Chloe Bird, Andrea Z LaCroix
BACKGROUND: The relationship between light intensity physical activity (PA), which is common in older adults, and cardiovascular disease (CVD) risk factors is unclear. This study examined associations of accelerometer-measured PA intensity with CVD risk factors in older women of different race-ethnicities. METHODS AND RESULTS: Cross-sectional analyses were conducted in 4832 women (mean age 78.9 years; 52.5% white, 30.5% black, 17.1% Hispanic) who were without known CVD and wore triaxial accelerometers a minimum of 4 of 7 days with ≥10 hours/d awake wear-time...
October 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29040315/individual-and-environmental-correlates-of-objectively-measured-sedentary-time-in-dutch-and-belgian-adults
#8
Femke van Nassau, Joreintje D Mackenbach, Sofie Compernolle, Ilse de Bourdeaudhuij, Jeroen Lakerveld, Hidde P van der Ploeg
As the detrimental health effects of sedentary behaviour are well established, insight into the individual and environmental factors that influence adults' sedentary behaviour is needed. Most studies to date rely on self-reported measures of sedentary time. Therefore, the aim of the current study was to examine individual and environmental correlates of objectively measured sedentary time in Dutch and Belgian adults. Between March and August 2014, Belgian (n = 133) and Dutch (n = 223) adults, recruited as sub-sample of the SPOTLIGHT survey, wore an ActiGraph accelerometer to provide objectively measured sedentary and moderate to vigorous physical activity time...
2017: PloS One
https://www.readbyqxmd.com/read/29040225/validation-of-a-novel-device-to-measure-and-provide-feedback-on-sedentary-behavior
#9
Jason M R Gill, Nabeha S A Hawari, Douglas J Maxwell, David Louden, Nikos Mourselas, Christopher Bunn, Cindy M Gray, Hidde P van der Ploeg, Kate Hunt, Anne Martin, Sally Wyke, Nanette Mutrie
PURPOSE: Pedometers, which enable self-monitoring of step counts, are effective in facilitating increases in physical activity. Similar devices which provide real-time feedback on sedentary (sitting) behavior are limited. This study aimed to develop and validate a novel device - the SitFIT - which could accurately measure and provide feedback on sedentary behavior and physical activity. METHODS: The SitFIT is a tri-axial accelerometer, developed by PAL Technologies, which is worn in the front trouser pocket...
October 16, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29039246/regular-practice-of-competitive-sports-does-not-impair-sleep-in-adolescents-dados-study
#10
María Reyes Beltran-Valls, Enrique García Artero, Ana Capdevila-Seder, Alejandro Legaz-Arrese, Mireia Adelantado-Renau, Diego Moliner-Urdiales
PURPOSE: To analyze differences in sleep quality and duration by athletic status and sex, and to examine the association between physical activity (PA) recommendation and sleep in adolescents. METHODS: A total of 267 adolescents [13.9 (0.3) y] from Deporte, ADOlescencia y Salud (DADOS) study (129 girls) were included in this cross-sectional analysis. Athletes competed regularly in organized sport events and trained ≥3 days per week, but nonathletes did not compete...
October 17, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29038553/a-comparison-of-passive-and-active-estimates-of-sleep-in-a-cohort-with-schizophrenia
#11
Patrick Staples, John Torous, Ian Barnett, Kenzie Carlson, Luis Sandoval, Matcheri Keshavan, Jukka-Pekka Onnela
Sleep abnormalities are considered an important feature of schizophrenia, yet convenient and reliable sleep monitoring remains a challenge. Smartphones offer a novel solution to capture both self-reported and objective measures of sleep in schizophrenia. In this three-month observational study, 17 subjects with a diagnosis of schizophrenia currently in treatment downloaded Beiwe, a platform for digital phenotyping, on their personal Apple or Android smartphones. Subjects were given tri-weekly ecological momentary assessments (EMAs) on their own smartphones, and passive data including accelerometer, GPS, screen use, and anonymized call and text message logs was continuously collected...
October 16, 2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/29037247/the-effect-of-a-weight-gain-prevention-intervention-on-moderate-vigorous-physical-activity-among-black-women-the-shape-program
#12
Mary L Greaney, Sandy Askew, Sherrie F Wallington, Perry B Foley, Lisa M Quintiliani, Gary G Bennett
BACKGROUND: Rates of physical inactivity are high among Black women living in the United States with overweight or obesity, especially those living in the rural South. This study was conducted to determine if an efficacious weight gain prevention intervention increased moderate-vigorous physical activity (MVPA). METHODS: The Shape Program, a weight gain prevention intervention implemented in community health centers in rural North Carolina, was designed for socioeconomically disadvantaged Black women with overweight or obesity...
October 16, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/29037111/head-and-neck-size-and-neck-strength-predict-linear-and-rotational-acceleration-during-purposeful-soccer-heading
#13
Jaclyn B Caccese, Thomas A Buckley, Ryan T Tierney, Kristy B Arbogast, William C Rose, Joseph J Glutting, Thomas W Kaminski
There is increasing societal concern about the long-term effects of repeated impacts from soccer heading, but there is little information about ways to reduce head impact severity. The purpose of this study was to identify factors that contribute to head acceleration during soccer heading. One-hundred soccer players completed 12 controlled soccer headers. Peak linear (PLA) and rotational (PRA) accelerations were measured using a triaxial accelerometer and gyroscope. Head acceleration contributing factors were grouped into 3 categories: size (head mass, neck girth), strength (sternocleidomastoid, upper trapezius) and technique [kinematics (trunk, head-to-trunk range-of-motion), sternocleidomastoid and upper trapezius activity]...
October 16, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29037104/high-magnitude-head-impact-exposure-in-youth-football
#14
Eamon T Campolettano, Ryan A Gellner, Steven Rowson
OBJECTIVE Even in the absence of a clinically diagnosed concussion, research suggests that neurocognitive changes may develop in football players as a result of frequent head impacts that occur during football games and practices. The objectives of this study were to determine the specific situations in which high-magnitude impacts (accelerations exceeding 40 g) occur in youth football games and practices and to assess how representative practice activities are of games with regard to high-magnitude head impact exposure...
October 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29036332/sensitivity-to-physical-activity-predicts-daily-activity-among-pain-free-older-adults
#15
Leah Miller, Thomas Ohlman, Kelly Marie Naugle
Objective: Prior research indicates that older adults with knee osteoarthritis have increased sensitivity to physical activity (SPA) and respond to physical activities of stable intensity with increases in pain. Whether SPA is present in healthy older adults without chronic pain and predicts functional outcomes remains relatively unexplored. The purpose of this study was to determine the degree of SPA in healthy older adults in response to a standardized walking task, and whether SPA was associated with temporal summation of pain, pain-related fear of movement, and functional outcomes...
October 4, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29034147/elementary-physical-education-a-focus-on-fitness-activities-and-smaller-class-sizes-are-associated-with-higher-levels-of-physical-activity
#16
Mandy Kirkham-King, Timothy A Brusseau, James C Hannon, Darla M Castelli, Kristy Hilton, Ryan D Burns
Optimizing physical activity during physical education is necessary for children to achieve daily physical activity recommendations. The purpose of this study was to examine the relationship among various contextual factors with accelerometer measured physical activity during elementary physical education. Data were collected during 2015-2016 from 281 students (1st-5th grade, 137 males, 144 females) from a private school located in a metropolitan area of Utah in the U.S. Students wore accelerometers for 12 consecutive weeks at an accelerometer wear frequency of 3 days per week during physical education...
December 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/29032856/sedentary-time-physical-activity-and-adiposity-cross-sectional-and-longitudinal-associations-in-cardia
#17
Bethany Barone Gibbs, Kelley Pettee Gabriel, Mercedes R Carnethon, Tiffany Gary-Webb, John M Jakicic, Jamal S Rana, Jared P Reis, Juned Siddique, Barbara Sternfeld, Cora E Lewis
INTRODUCTION: Higher sedentary time (ST) and lower moderate- to vigorous-intensity physical activity (MVPA) have each been associated with greater adiposity, but most studies are cross-sectional and measure ST and MVPA by self-report. This study evaluated associations between objective ST and MVPA with current and 5-year changes in BMI and waist circumference. METHODS: The Coronary Artery and Risk Development in Young Adults longitudinal cohort study recruited black or white young adults from four U...
September 26, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29030647/the-diagnostic-reliability-of-the-quantitative-pivot-shift-evaluation-using-an-electromagnetic-measurement-system-for-anterior-cruciate-ligament-deficiency-was-superior-to-those-of-the-accelerometer-and-ipad-image-analysis
#18
Toshikazu Tanaka, Yuichi Hoshino, Nobuaki Miyaji, Kazuyuki Ibaragi, Kyohei Nishida, Yuichiro Nishizawa, Daisuke Araki, Noriyuki Kanzaki, Takehiko Matsushita, Ryosuke Kuroda
PURPOSE: Several non-invasive devices have been developed to obtain quantitative assessment of the pivot-shift test in clinical setting using similar but diverse measurement parameters. However, the clinical usability of those measurements has yet to be closely investigated and compared. The purpose of this study was to compare the diagnostic accuracy of three non-invasive measurement devices for the pivot-shift test. METHODS: Thirty patients with unilateral anterior cruciate ligament (ACL) injury were enrolled...
October 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29029873/prediction-of-calving-time-in-dairy-cattle
#19
Fadul Mahmoud, Bogdahn Christopher, Alsaaod Maher, Hüsler Jürg, Starke Alexander, Steiner Adrian, Hirsbrunner Gaby
This prospective study was carried out to predict the calving time in primiparous (n=11) and multiparous (n=22) Holstein-Friesian cows using the combination of data obtained from the RumiWatch noseband-sensor and 3D-accelerometer. The animals included in the study were fitted with the RumiWatch noseband-sensor and 3D-accelerometer at least 10days before the expected calving day. The calving event was defined as the time of the first appearance of the calves' feet outside the vulva, and this moment was determined by farm staff and/or confirmed by video monitor...
October 5, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29028920/perceived-fatigability-and-objective-physical-activity-in-mid-to-late-life
#20
Amal A Wanigatunga, Eleanor M Simonsick, Vadim Zipunnikov, Adam P Spira, Stephanie Studenski, Luigi Ferrucci, Jennifer A Schrack
Background: Fatigability, defined as fatigue in relation to a standardized task, predicts functional decline in older adults independent of reported tiredness or energy level. Although the sensation of fatigue, tiredness, and energy level adversely affect physical activity (PA), the association between fatigability and objectively measured PA is unknown. Methods: Participants in the Baltimore Longitudinal Study of Aging (n=557, 50% women, aged 50-97) were instructed to wear an Actiheart accelerometer for 7 consecutive days in the free-living environment...
September 19, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
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