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Danilo R. Silva, Cláudia S. Minderico, Pedro B. Júdice, André O. Werneck, David Ohara, Edilson S. Cyrino and Luís B. Sardinha

accelerometers in youth physical activity studies: a review of methods . J Phys Act Health . 2013 ; 10 ( 3 ): 437 – 450 . PubMed ID: 23620392 doi:10.1123/jpah.10.3.437 23620392 10.1123/jpah.10.3.437 12. Byrom B , Stratton G , Mc Carthy M , Muehlhausen W . Objective measurement of sedentary

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Dietrich Rothenbacher, Dhayana Dallmeier, Michael D. Denkinger, Bernhard O. Boehm, Wolfgang Koenig, Jochen Klenk and ActiFE Study Group

explain these results. The following strengths and limitations need to be considered. A strength of this study is the objective measurement of PA, specifically walking duration. Self-report is prone to bias and may be a particular issue in older adults. However, the results are based on a cross

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Melissa M.B. Morrow, Bethany Lowndes, Emma Fortune, Kenton R. Kaufman and M. Susan Hallbeck

observation. 12 , 13 Objective measurement of kinematics outside the laboratory requires wearable sensors that are easy to apply, unobtrusive, and reach a level of accuracy sufficient to answer the study question. Inertial measurement units (IMUs) have grown in popularity for the measurement of joint motion

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Alex V. Rowlands

children and adults ( 15 ). How does the effect of environmental interventions on physical activity interact with the weather conditions experienced? If so, to what extent (and why) do these effects vary across settings? With the increasing objective measurement of physical activity globally and the

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Kristina L. Dunn, R. Curtis Bay, Javier F. Cárdenas, Matthew Anastasi, Tamara C. Valovich McLeod and Richelle M. Williams

that are affordable and easily completed in the clinical setting or on the athletic field. Development of the Sway Balance™ mobile application allows for improved objective measurements of postural control in the field setting. The use of this application on multiple devices during preparticipation

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Daniel J. Peart, Michael Graham, Callum Blades and Ian H. Walshe

are some limitations we must acknowledge. First, the open nature of the exercise task meant that workload could not be controlled, and therefore, it cannot be discounted that workload may have been different between visits. An objective measurement of workload like heart rate alongside perceived

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Wesley O’Brien, Michael J. Duncan, Orlagh Farmer and Diarmuid Lester

intervention was collected on participants in their class groups (maximum n  = 30) during specific school visits. Objective measurements, such as FMS and FMS ™ , were carried out during a typical PE class, while subjective self-report questionnaire measurements were taken during a separate school visit in a

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

, self-report, and objective measures (ie, accelerometry) have generated mixed results. 14 , 15 Accelerometry is the current best-practice technique for measuring free-living PA in adults and children. 16 , 17 Body-worn accelerometers (ACCs) provide an objective measurement of the frequency, intensity

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Jeremy A. Steeves, Scott A. Conger, Joe R. Mitrzyk, Trevor A. Perry, Elise Flanagan, Alecia K. Fox, Trystan Weisinger and Alexander H.K. Montoye

- and under-estimations) when compared to objective measurement tools ( Prince et al., 2008 ; Sallis & Saelens, 2000 ). In recent years there has been a proliferation of wearable physical activity tracking technologies ( Sullivan & Lachman, 2016 ; Thompson, 2018 ). A wide variety of research-grade and

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Lisa M. Barnett, Dean A. Dudley, Richard D. Telford, David R. Lubans, Anna S. Bryant, William M. Roberts, Philip J. Morgan, Natasha K. Schranz, Juanita R. Weissensteiner, Stewart A. Vella, Jo Salmon, Jenny Ziviani, Anthony D. Okely, Nalda Wainwright, John R. Evans and Richard J. Keegan

.e., consistent) and valid (i.e., interpretable/understandable) measure that circumstances and resources allow. In the following section, we provide three scenarios that are relevant to the context of PE. Tremblay and Lloyd ( 2010 , p. 26) have advocated the comprehensive and objective measurement of physical