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Narelle Eather, Mark R. Beauchamp, Ryan E. Rhodes, Thierno M.O. Diallo, Jordan J. Smith, Mary E. Jung, Ronald C. Plotnikoff, Michael Noetel, Nigel Harris, Emily Graham and David R. Lubans

-phase process (Phase 1: scale development, Phase 2: assessment of factorial validity, and Phase 3: assessment of test–retest reliability). Global estimates report that <20% of adolescents are sufficiently active (with a marked decline in physical activity of ~7% each year during adolescence; Hallal et

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Amador García-Ramos, Guy Gregory Haff, Francisco Luis Pestaña-Melero, Alejandro Pérez-Castilla, Francisco Javier Rojas, Carlos Balsalobre-Fernández and Slobodan Jaric

The 1-repetition maximum (1RM) is defined as the maximum load that can be lifted just once in a given exercise. 1 The 1RM is one of the variables most commonly reported to assess the efficacy of various training and rehabilitation interventions as it is considered a valid indicator of maximal

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Zachary Zenko and Panteleimon Ekkekakis

investigating the comparative validity of measures of automatic associations. Measurement as a Persistent Challenge in the Study of Automatic Associations Compared with explicit constructs, implicit processes are greatly understudied and remain poorly understood. Before exercise-specific dual-process theories

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

participants’ cognitive and motivational processes. The dearth of valid measures to assess transfer of responsibility learning in physical education or TPSR programs constitutes a gap in the literature ( Jacobs & Wright, 2017 ). The desire to see learning transfer is certainly not restricted to physical

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David M. Williams, Jyoti Savla, Brenda M. Davy, Sarah A. Kelleher, Elaina L. Marinik and Richard A. Winett

The purpose of the present research was to develop questionnaires to assess outcome expectancy for resistance training (RT), behavioral expectation in the context of perceived barriers to RT, and self-regulation strategies for RT among young-old adults (50-69 years). Measurement development included (a) item generation through elicitation interviews (N = 14) and open-ended questionnaires (N = 56), (b) expert feedback on a preliminary draft of the questionnaires (N = 4), and (c) a quantitative longitudinal study for item-reduction and psychometric analyses (N = 94). Elicitation procedures, expert feedback, and item reduction yielded four questionnaires with a total of 33 items. Positive outcome expectancy (α = .809), negative outcome expectancy (α = .729), behavioral expectation (α = .925), and self-regulation (α = .761) had—with one exception—moderate bivariate associations with two different indicators of self-reported RT behavior at one-month follow-up (r = .298 to .506). The present research provides preliminary support for newly developed questionnaires to facilitate understanding of the psychosocial determinants of RT among young-old adults.

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Farzad Mohammadi, Abbas Bahram, Hasan Khalaji, Dale A. Ulrich and Farhad Ghadiri

. Validity is considered as one of the psychometric properties emphasized by researchers in order to evaluate the accuracy and significance of the obtained test scores. The measure expresses the extent of accuracy to which the test material can evaluate the constructs, properties, roles or abilities for

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Alan K. Bourke, Espen A. F. Ihlen and Jorunn L. Helbostad

criterion validation of the activPAL3 has been performed. Previously, Sellers, Dall, Grant, and Stansfield ( 2016b ) examined the validity and reliability for activity classification and step detection in a population of eight young and 20 adult participants. Participants performed a scripted routine and a

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Grant R. Tomkinson, Justin J. Lang, Joel Blanchard, Luc A. Léger and Mark S. Tremblay

stage, the required running speed increases, until the child can no longer run the 20-m distance in time with the audio signal (on 2 consecutive occasions) or when the child stops due to volitional fatigue. The test has moderate criterion validity against gas-analyzed peak V ˙ O 2 (mL/kg/min) (see

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Kelly R. Evenson and Camden L. Spade

information output from the device (i.e., features) should be both valid and reliable ( Duking, Fuss, Holmberg, & Sperlich, 2018 ). However, the literature assessing activity trackers is voluminous, with varied protocols, brands and versions, locations worn, and modes of testing. This makes it challenging to

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Kornelius Kraus, Elisabeth Kraus, Boris Gojanovic and Francois Fourchet

Key Points ▸ The reliability of manual goniometry is highly dependent on the examiner. ▸ The concurrent validity of the inertial goniometer was very high compared to a 2D analysis. ▸ The ease of use, time efficiency, and concurrent validity supports the application of inertial goniometry. Range of