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Paul M. Wright, K. Andrew R. Richards, Jennifer M. Jacobs and Michael A. Hemphill

promote these actions in and beyond the classroom” ( 2017 , p. 10). Regarding the instrumentation required to support these lines of research, tools have been developed and validated to assess students’ personal and social responsibility in the physical education setting via self-report ( Li, Wright

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I-Min Lee, Eric J. Shiroma, Kelly R. Evenson, Masamitsu Kamada, Andrea Z. LaCroix and Julie E. Buring

. To assess whether we would be able to use the data from the women without logs, we conducted a validation study ( Shiroma, Kamada, Smith, Harris, & Lee, 2015 ). Two blinded reviewers visually examined daily accelerometer output and judged whether the device was worn on a particular day (worn versus

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Alberto Flórez-Pregonero, Matthew S. Buman and Barbara E. Ainsworth

estimates of sedentary time ( Crouter et al., 2006 ; Lyden, 2012 ). Likewise, as monitor cut-points are specific to where they are worn, cut-points should be considered location-specific; it is unlikely that a cut-point validated for the hip will lead to accurate classifications at the wrist. Research

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Isaac Estevan, Javier Molina-García, Gavin Abbott, Steve J. Bowe, Isabel Castillo and Lisa M. Barnett

potential influence on children’s health trajectory ( Robinson et al., 2015 ). In order to be able to assess in the future whether there are differences in motor competence perception amongst children from different cultures, it is required to use a validated scale ( Marsh, 1996 ). Thus the primary purpose

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Alexander H.K. Montoye, Kimberly A. Clevenger, Kelly A. Mackintosh, Melitta A. McNarry and Karin A. Pfeiffer

 al., 2016 ; Staudenmayer et al., 2015 ) and one study in youth ( Hibbing, Ellingson, et al., 2018 ) have demonstrated that the accuracy of these models decreases when cross-validating in a new or independent sample, indicating a tendency for machine learning models to be over-fit to the data. Further

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Jacob A. Goldsmith, Cameron Trepeck, Jessica L. Halle, Kristin M. Mendez, Alex Klemp, Daniel M. Cooke, Michael H. Haischer, Ryan K. Byrnes, Robert F. Zoeller, Michael Whitehurst and Michael C. Zourdos

statistical analyses (ie, no agreement statistics). 5 , 6 While the TWAS is reliable for peak velocity 7 and the Tendo Fitrodyne was validated for average velocity with an agreement plot versus a criterion, 2 these devices remain unaffordable for most practitioners. The Open Barbell System (OBS) LPT was

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Stacy N. Scott, Cary M. Springer, Jennifer F. Oody, Michael S. McClanahan, Brittany D. Wiseman, Tyler J. Kybartas and Dawn P. Coe

estimated VO 2 peak is significantly underestimated in individuals with a high BMI, and researchers have suggested the inclusion of BMI as a predictor variable in the PACER equation ( 25 ). All currently validated equations are based on tests measuring VO 2 peak on a treadmill and not during the actual

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Albert R. Mendoza, Kate Lyden, John Sirard, John Staudenmayer, Catrine Tudor-Locke and Patty S. Freedson

device battery life, and on board device or cloud-based memory capacity. However, growth of the market and advances in consumer device technology far outpace our understanding about the validity of such devices. The majority of consumer activity tracker validation studies currently available have been

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Dennis K. Landin, Andrew Hawkins and Robert L. Wiegand

This investigation sought to validate a taxonomy of strategies used in formulating the feedback supplied to teacher trainees involved in the peer teaching segment of a secondary methods class. Lesson deficiencies were diagnosed through analysis of student and teacher process behavior data. Certain student and teacher response classes were selected for each trainee as dependent variables (DVs) and targeted for improvement. Goals were set for each DV and strategies for improvement were suggested by teacher educators (TEs). These strategies, selected from a taxonomy developed in previous work (Hawkins, Wiegand, & Landin, 1985), served as independent variables (IVs). A modified changing criterion design was employed to evaluate the data. Strategy effectiveness was determined by analyzing the degree to which trainees met data-based goals for the targeted response classes. Results indicated that several strategies seemed useful for a wide variety of activities. Also indicated by the results is the need for teacher trainers to be better prepared to handle large classes.

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Kelley Pettee Gabriel, Adriana Pérez, David R. Jacobs Jr, Joowon Lee, Harold W. Kohl III and Barbara Sternfeld

and evaluate composite scores, which includes physical activity estimates from multiple sources, has not yet been explored. Therefore, the purpose of this study is to illustrate proof of concept by exploring the utility and cross-validation of a composite score which combines self-reported and