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https://www.readbyqxmd.com/read/29792560/acceleration-profile-of-an-acrobatic-act-during-training-and-shows-using-wearable-technology
#1
Leland Barker, Bryan Burnstein, John Mercer
The purpose of this study was to describe the mechanical characteristics of a trampoline circus act and its individual tracks performed in training and shows using a tri-axial accelerometer. A track is an artist's specific role within a choreographed act. Seven male acrobats performed their trampoline act during training and shows while wearing a triaxial accelerometer and reported ratings of perceived exertion (RPE) after each trial. Average acceleration (AVG), root mean square (RMS), root mean to the fourth (RM4), time spent in specific acceleration ranges and RPE were measured/recorded from training and show acts...
May 24, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29791812/automated-oestrus-detection-using-multimetric-behaviour-recognition-in-seasonal-calving-dairy-cattle-on-pasture
#2
J Brassel, F Rohrssen, K Failing, A Wehrend
AIM: To evaluate the performance of a novel accelerometer-based oestrus detection system (ODS) for dairy cows on pasture, in comparison with measurement of concentrations of progesterone in milk, ultrasonographic examination of ovaries and farmer observations. METHODS: Mixed-breed lactating dairy cows (n=109) in a commercial, seasonal-calving herd managed at pasture under typical farming conditions in Ireland, were fitted with oestrus detection collars 3 weeks prior to mating start date...
May 23, 2018: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/29790293/the-relationship-between-self-reported-restless-sleep-and-objectively-measured-physical-activity-in-adults-with-knee-osteoarthritis
#3
Abigail L Gilbert, Jungwha Lee, Jing Song, Pamela A Semanik, Linda S Ehrlich-Jones, C Kent Kwoh, Dorothy D Dunlop, Rowland W Chang
OBJECTIVE: Despite many health benefits of physical activity, inactivity is endemic among adults with knee osteoarthritis (KOA). Because sleep quality may be a target to improve physical activity behavior, we investigated the cross-sectional relationship between restless sleep and physical activity in participants with or at risk for KOA. METHODS: We analyzed accelerometer-measured physical activity and clinical data from Osteoarthritis Initiative (OAI) participants...
May 22, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29789809/development-of-step-count-cut-points-for-school-day-vigorous-physical-activity
#4
Ryan D Burns, Timothy A Brusseau, You Fu, Peng Zhang
Background: No study has established step-count cut points for varying amounts of accelerometer-assessed vigorous physical activity (VPA) accrued during the school day in children. The purpose of this study was to establish step-count cut points for discriminating children meeting VPA in 5 minutes, 10 minutes, 15 minutes, and 20 minutes per 7-hour school day. Methods: Participants were a convenience sample of 1,053 children (mean age = 8.4 (1.8) years) recruited from 5 schools from the Mountain West region of the USA...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29789150/compensation-for-inertial-and-gravity-effects-in-a-moving-force-platform
#5
Sandra K Hnat, Ben J H van Basten, Antonie J van den Bogert
Force plates for human movement analysis provide accurate measurements when mounted rigidly on an inertial reference frame. Large measurement errors occur, however, when the force plate is accelerated, or tilted relative to gravity. This prohibits the use of force plates in human perturbation studies with controlled surface movements, or in conditions where the foundation is moving or not sufficiently rigid. Here we present a linear model to predict the inertial and gravitational artifacts using accelerometer signals...
May 19, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29788858/capacity-of-objective-measures-of-physical-activity-to-predict-brazilian-children-s-low-motor-proficiency
#6
Manoella O Santos, Diego G Barbosa, Geraldo J F Junior, Raísa C Silva, Andreia Pelegrini, Érico P G Felden
This study analyzed the associations between physical activity (PA) and motor proficiency (MP) so as to determine what level of moderate PA might help avoid low MP in 8-10-year-old Brazilian children. We assessed MP of 98 children using the Bruininks-Oseretsky Motor Proficiency, Second Edition Short Form (BOT-2 SF), and we assessed PA using the GT3X + accelerometer. We analyzed data using means, standard deviations, frequency distribution, spearman coefficient correlation test, Mann-Whitney U test, and receiver operating characteristics curve...
January 1, 2018: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29787701/the-effect-of-sleep-quality-on-academic-performance-is-mediated-by-internet-use-time-dados-study
#7
Mireia Adelantado-Renau, Ana Diez-Fernandez, Maria Reyes Beltran-Valls, Alberto Soriano-Maldonado, Diego Moliner-Urdiales
OBJECTIVE: The aims of the present study were to analyze the association of sleep patterns with academic and cognitive performance in adolescents, and to test the potential mediating effect of different activities of screen media usage on this association. METHODS: A sample of 269 adolescents (140 boys) aged 14 years from the baseline data of the DADOS (Deporte, ADOlescencia y Salud). Study completed questionnaires about sleep quality, cognitive performance, and leisure-time sedentary behaviors...
May 19, 2018: Jornal de Pediatria
https://www.readbyqxmd.com/read/29786659/deep-learning-to-predict-falls-in-older-adults-based-on-daily-life-trunk-accelerometry
#8
REVIEW
Ahmed Nait Aicha, Gwenn Englebienne, Kimberley S van Schooten, Mirjam Pijnappels, Ben Kröse
Early detection of high fall risk is an essential component of fall prevention in older adults. Wearable sensors can provide valuable insight into daily-life activities; biomechanical features extracted from such inertial data have been shown to be of added value for the assessment of fall risk. Body-worn sensors such as accelerometers can provide valuable insight into fall risk. Currently, biomechanical features derived from accelerometer data are used for the assessment of fall risk. Here, we studied whether deep learning methods from machine learning are suited to automatically derive features from raw accelerometer data that assess fall risk...
May 22, 2018: Sensors
https://www.readbyqxmd.com/read/29785450/light-intensity-physical-activity-increases-and-sedentary-behavior-decreases-following-total-knee-arthroplasty-in-patients-with-osteoarthritis
#9
Emmanuel Frimpong, Joanne A McVeigh, Dick van der Jagt, Lipalo Mokete, Yusuf S Kaoje, Mohammed Tikly, Rebecca M Meiring
PURPOSE: To describe objectively measured changes in the volume and pattern of physical activity and sedentary behavior in patients undergoing total knee arthroplasty for osteoarthritis. METHODS: Physical activity and sedentary behavior were measured in patients (13 males, 76 females) with a mean age of 64 years (range 55-80) and end-stage osteoarthritis of the knee, using an accelerometer (ActiGraph GT3X+) for seven consecutive days (24 h/day) prior to, 6 weeks and 6 months after total knee arthroplasty...
May 21, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29781938/physical-demands-of-amateur-domestic-and-representative-netball-in-one-season-in-new-zealand-assessed-using-heart-rate-and-movement-analysis
#10
Doug A King, Cloe Cummins, Patria A Hume, Trevor N Clark
King, DA, Cummins, C, Hume, PA, and Clark, TN. Physical demands of amateur domestic and representative netball in one season in New Zealand assessed using heart rate and movement analysis. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this descriptive cohort study was to describe physical demands of netball for positions and between playing levels using microtechnology. Data were collected from 34 female netball players across 3 teams at different levels (over 19 years representative [O19], under 19 years representative [U19], and open-age amateur club domestic) for 20 games using heart rate and microtechnology data...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29776782/an-intervention-to-increase-students-physical-activity-a-2-year-pilot-study
#11
R Glenn Weaver, Collin A Webster, Michael W Beets, Keith Brazendale, Lauren Schisler, Mazen Aziz
INTRODUCTION: Schools are called upon to provide children with 30 minutes/day of moderate to vigorous physical activity (MVPA). Most school-based physical activity interventions have not targeted schools that serve children from low-income families. This study evaluated the effects of a pilot, competency-building professional development program on the school day MVPA and total activity (light- to vigorous-intensity activity) of students from schools that serve low-income families. STUDY DESIGN: Single group intervention with multiple follow-up repeated cross-sectional measures...
May 15, 2018: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29776774/association-of-disrupted-circadian-rhythmicity-with-mood-disorders-subjective-wellbeing-and-cognitive-function-a-cross-sectional-study-of-91-105-participants-from-the-uk-biobank
#12
Laura M Lyall, Cathy A Wyse, Nicholas Graham, Amy Ferguson, Donald M Lyall, Breda Cullen, Carlos A Celis Morales, Stephany M Biello, Daniel Mackay, Joey Ward, Rona J Strawbridge, Jason M R Gill, Mark E S Bailey, Jill P Pell, Daniel J Smith
BACKGROUND: Disruption of sleep and circadian rhythmicity is a core feature of mood disorders and might be associated with increased susceptibility to such disorders. Previous studies in this area have used subjective reports of activity and sleep patterns, but the availability of accelerometer-based data from UK Biobank participants permits the derivation and analysis of new, objectively ascertained circadian rhythmicity parameters. We examined associations between objectively assessed circadian rhythmicity and mental health and wellbeing phenotypes, including lifetime history of mood disorder...
May 15, 2018: Lancet Psychiatry
https://www.readbyqxmd.com/read/29776014/association-of-objectively-measured-physical-activity-with-brain-structure-uk-biobank-study
#13
Mark Hamer, Nikhil Sharma, G David Batty
BACKGROUND: Physical activity may be beneficial for cognition but mechanisms are unclear. We examined the association between objectively assessed physical activity and brain volume, with a focus on the hippocampus region. METHODS: We used data from UK Biobank (n=5,272; aged 55.4±7.5 yrs; 45.6% men) collected through 2013-2016. Participants wore the Axivity AX3 wrist-worn triaxial accelerometer for seven days to assess habitual physical activity. Structural magnetic resonance imaging was performed using a standard Siemens Skyra 3T running VD13A SP4 to obtain images of the brain...
May 18, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29775549/growth-trajectories-of-young-children-s-objectively-determined-physical-activity-sedentary-behavior-and-body-mass-index
#14
Zan Gao
PURPOSE: This study examined trajectories in children's physical activity (PA), sedentary behavior, and body mass index (BMI) for both genders, and relationships among these trajectories, from childhood through early adolescence. METHODS: A total of 261 seconds and third-grade children (135 girls; Meanage  = 7.81; 73% White) from two U.S. elementary schools participated in this study. Their objective PA, sedentary behavior, and BMI were measured yearly from 2012 to 2015...
May 18, 2018: Childhood Obesity
https://www.readbyqxmd.com/read/29773575/measuring-physical-activity-with-implanted-cardiac-devices-a-systematic-review
#15
Lindsey Rosman, Rachel Lampert, Samuel F Sears, Matthew M Burg
BACKGROUND: Physical activity is predictive of cardiovascular outcomes in patients with cardiovascular implantable electronic devices, yet it is not regularly assessed in routine care. Current-generation cardiovascular implantable electronic devices, however, continuously monitor patient activity through a built-in accelerometer, which provides new opportunities to remotely assess patient activity, detect changes in clinical status, and incorporate these data in risk stratification models...
May 17, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29772819/do-young-people-ever-sit-still-variations-in-accelerometer-counts-muscle-activity-and-heart-rate-across-various-sedentary-activities-in-youth
#16
Evi van Ekris, Mai J M Chinapaw, Joost Rotteveel, Teatske M Altenburg
Evidence of adverse health effects of TV viewing is stronger than for overall sedentary behaviour in youth. One explanation may be that TV viewing involves less body movement than other sedentary activities. Variations in body movement across sedentary activities are currently unknown, as are age differences in such variations. This study examined body movement differences across various sedentary activities in children and adolescents, assessed by hip-, thigh- and wrist-worn accelerometers, muscle activity and heart rate...
May 17, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29772803/the-impact-of-activity-based-working-abw-on-workplace-activity-eating-behaviours-productivity-and-satisfaction
#17
Lauren Arundell, Bronwyn Sudholz, Megan Teychenne, Jo Salmon, Brooke Hayward, Genevieve N Healy, Anna Timperio
The redesign of the physical workplace according to activity-based working (ABW) principles has potential to influence employee health and workplace outcomes. This natural experiment examined changes in accelerometer-derived workplace activity, self-reported eating behaviours, productivity, workplace satisfaction before (March to November 2014) and six to nine months after moving to an ABW workplace compared to a comparison workplace ( n = 146 at baseline (56% ABW, aged 40.1 ± 8.5 years, 72% female). Interviews were also conducted with 21 ABW participants...
May 17, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29772608/activity-behaviours-in-lean-and-morbidly-obese-pregnant-women
#18
Caterina Fazzi, Nor Mohd-Shukri, Fiona C Denison, David H Saunders, Jane E Norman, Rebecca M Reynolds
Interventions to increase physical activity in pregnancy are challenging for morbidly obese women. Targeting sedentary behaviours may be a suitable alternative to increase energy expenditure. We aimed to determine total energy expenditure, and energy expended in sedentary activities in morbidly obese and lean pregnant women. We administered the Pregnancy Physical Activity Questionnaire PPAQ (non-objective) and the Actical accelerometer (objective) to morbidly obese (BMI≥40kg/m²) and lean (BMI≤25Kg/M²) pregnant women recruited in early (<24 weeks), and late (≥24 weeks) gestation...
May 17, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29772291/watching-television-or-listening-to-music-while-exercising-failed-to-affect-post-exercise-food-intake-or-energy-expenditure-in-male-adolescents
#19
Holly Livock, Joel D Barnes, Catherine Pouliot, Allana G LeBlanc, Travis J Saunders, Mark S Tremblay, Denis Prud'homme, Jean-Philippe Chaput
Watching television or listening to music while exercising can serve as motivating factors, making it more pleasant to exercise for some people. However, it is unknown whether these stimuli influence food intake and/or physical activity energy expenditure (PAEE) for the remainder of the day, potentially impacting energy balance and weight control. We examined the effects of watching television or listening to music while exercising on post-exercise energy intake and expenditure. Our study was a randomized crossover design, in which 24 male adolescents (mean age: 14...
May 14, 2018: Appetite
https://www.readbyqxmd.com/read/29771620/self-reported-functional-mobility-balance-confidence-and-prosthetic-use-are-associated-with-daily-step-counts-among-individuals-with-a-unilateral-transtibial-amputation
#20
Jaclyn Megan Sions, Elisa Sarah Arch, John Robert Horne
BACKGROUND: Adults postamputation are not meeting physical activity recommendations. Physical activity is an important consideration in prosthetic prescription. The objective of this study was to determine if functional mobility, balance confidence, and prosthetic use are associated with physical activity among adults with a lower-limb amputation. METHODS: This study recruited patients aged 18-85 years with unilateral transtibial amputations. The Cumulative Illness Rating Scale was used to determine comorbidity burden...
June 1, 2018: Journal of Physical Activity & Health
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