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Kimberly Hannam, Kevin Deere, Sue Worrall, April Hartley and Jon H. Tobias

The purpose of this study was to establish the feasibility of using an aerobics class to produce potentially bone protective vertical impacts of ≥ 4g in older adults and to determine whether impacts can be predicted by physical function. Participants recruited from older adult exercise classes completed an SF-12 questionnaire, short physical performance battery, and an aerobics class with seven different components, performed at low and high intensity. Maximum g and jerk values were identified for each activity. Forty-one participants (mean 69 years) were included. Mean maximal values approached or exceeded the 4g threshold for four of the seven exercises. In multivariate analyses, age (−0.53; −0.77, −0.28) (standardized beta coefficient; 95% CI) and 4-m walk time (−0.39; −0.63, −0.16) were inversely related to maximum g. Aerobics classes can be used to produce relatively high vertical accelerations in older individuals, although the outcome is strongly dependent on age and physical function.

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Ignacio Perez-Pozuelo, Thomas White, Kate Westgate, Katrien Wijndaele, Nicholas J. Wareham and Soren Brage

acceleration signal, including the magnitude of movement and the orientation of the accelerometer with respect to gravity. Previous research using wrist accelerometry has described variation in population physical activity expressed predominantly as the activity-related acceleration magnitude. For example, da

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Jairo H. Migueles, Alex V. Rowlands, Florian Huber, Séverine Sabia and Vincent T. van Hees

science, and thanks to technological evolution towards smaller, cheaper, and power efficient sensors, accelerometers now tend to store ‘raw’ data for offline processing and analysis. The data recorded are typically expressed in gravitational acceleration ( g ) because this is the reference point for

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Matthew Pearce, Tom R.P. Bishop, Stephen Sharp, Kate Westgate, Michelle Venables, Nicholas J. Wareham and Søren Brage

; Wareham et al., 2003 ); and (4) mean wrist acceleration expressed in milli-g (ACC WRIST ) ( White et al., 2019 ). Target Criterion Values The gold-standard target criterion for assessing PAEE (kJ·day −1 ·kg −1 ) was the difference between total and resting energy expenditure as measured by the DLW method

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Erin Strutz, Raymond Browning, Stephanie Smith, Barbara Lohse and Leslie Cunningham-Sabo

, and duration of PA. 17 The GENEActiv ACC (Activinsights Ltd, Cambridge, UK) is one such device that collects raw (ie, not processed) acceleration data and allows for a user-determined sampling frequency ranging from 10 to 100 Hz. This waterproof, wrist-mounted device has been validated for use in

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Patty Freedson

 al., 2017 ). When simply looking at magnitudes of acceleration (i.e., movement), as cut-points do, outcomes are likely approximating stationary time rather than sedentary time. For example, in a laboratory-based protocol, Bakrania et al. ( 2016 ) showed that hip- and wrist-worn raw acceleration cut

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Taru Manyanga, Nyaradzai E. Munambah, Carol B. Mahachi, Daga Makaza, Tholumusa F. Mlalazi, Vincent Masocha, Paul Makoni, Fortunate Sithole, Bhekuzulu Khumalo, Sipho H. Rutsate and Tonderayi M. Matsungo

of malnutrition”. 2 However, there is limited data to accurately assess the extent of these problems among Zimbabwean children. 3 To better understand and help reduce the unhealthy acceleration of these public health challenges, Zimbabwe is participating in the Global Matrix initiative, 4

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Taru Manyanga, Joel D. Barnes, Chalchisa Abdeta, Ade F. Adeniyi, Jasmin Bhawra, Catherine E. Draper, Tarun R. Katapally, Asaduzzaman Khan, Estelle Lambert, Daga Makaza, Vida K. Nyawornota, Reginald Ocansey, Narayan Subedi, Riaz Uddin, Dawn Tladi and Mark S. Tremblay

low to medium HDIs, there may still be an opportunity to reduce the transition acceleration. To this end, it may be reasonable to employ the common global 79 , 80 and/or regional 81 strategies that have been proposed and other recommendations, 50 , 56 including those for improving grades from

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% reduction in nipple acceleration during walking, when compared to their natural counterparts. During running, the B-Lite ® subglandular participant displayed decreased nipple kinematics, compared to their natural counterpart, and lower nipple kinematics compared to the B-Lite ® submuscular participant

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Steriani Elavsky, Lenka Knapova, Adam Klocek and David Smahel

—COPD Hybrid (SMS + App): Activity coach (accelerometer monitoring, motivational cues, graphical feedback, and defined goals) and text-based motivational cues 1 PA: Accelerometer (activity acceleration counts/min) 2 Significant increase in PA from baseline to 1 month by 13% (799 ± 280 to 903 ± 269 cpm, Cohen