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Kathryn J. DeShaw, Laura Ellingson, Yang Bai, Jeni Lansing, Maria Perez and Greg Welk

.g., Fitbit, Jawbone, Apple Watch, Polar). These devices are user-friendly, comfortable to wear, and offer potential to both assess and promote PA. Unfortunately, the literature on the validity of these devices is equivocal due to inherent differences in validation methods, including differences in outcome measures

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Clara Teixidor-Batlle, Carles Ventura Vall-llovera, Justine J. Reel and Ana Andrés

example, cheerleading, swimming, or synchronized skating ( Reel & Gill, 1996 ). The attempt to standardize a weight pressures measure across sports originated with the validation of the English-language version of the weight pressures in sport for female athletes (WPS-F; Reel, Petrie, SooHoo, & Anderson

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Lindsey Tulipani, Mark G. Boocock, Karen V. Lomond, Mahmoud El-Gohary, Duncan A. Reid and Sharon M. Henry

highly accurate systems (eg, electromagnetic motion tracking system, potentiometer); however, these studies did not attempt to collect data with human subjects performing functional tasks. 10 , 11 Clearly there exists a dearth of research that have attempted to validate inertial sensor data during

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Marquis Hawkins, Deirdre K. Tobias, Hala B. Alessa, Andrea K. Chomistek, Junaidah B. Barnett, Walter C. Willett and Susan E. Hankinson

relationships can inform intervention approaches. Therefore, we evaluated the association of PA intensity and type, using objective and self-reported measures of PA, with circulating sex hormones in premenopausal and postmenopausal women. Methods Study Population The Women’s Lifestyle Validation Study is an

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Alba Reguant-Closa, Margaret M. Harris, Tim G. Lohman and Nanna L. Meyer

athletes ( Mettler et al., 2009 ). Athletes are a population with specific nutritional requirements to optimize health and performance ( Thomas et al., 2016 ). One of the more relevant studies is the validation of the Food Pyramid for Swiss Athletes (FPSA) by Mettler et al. ( 2009 ). The aim of the

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Katherine L. Hsieh, Yaejin Moon, Vignesh Ramkrishnan, Rama Ratnam and Jacob J. Sosnoff

such sensors to be a valid measure of gait and static postural control. 17 – 19 However, these investigations did not use a body-tracking depth sensor to quantify VTC, which may provide an alternative approach to assess postural stability. Consequently, the aim of this study was to validate VTC

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Jennifer L. Huberty, Jeni L. Matthews, Meynard Toledo, Lindsay Smith, Catherine L. Jarrett, Benjamin Duncan and Matthew P. Buman

validated wrist-worn triaxial sensor used to objectively measure physical activity in the free-living setting. However, the validity of both devices in measuring energy expenditure has not been evaluated for yoga. The validation of portable, light-weight devices such as the Actigraph and GENEActiv is

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John Goetschius, Mark A. Feger, Jay Hertel and Joseph M. Hart

-plates are considered the ‘gold-standard’ for postural control assessments, and have previously been utilized to validate novel postural control assessment devices. 3 – 5 Force-plates calculate COP excursions using load cells and measuring the 3-dimensional (x, y, z) forces and moments generated between

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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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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