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Miguel A. de la Cámara, Sara Higueras-Fresnillo, Verónica Cabanas-Sánchez, Kabir P. Sadarangani, David Martinez-Gomez and Óscar L. Veiga

, self-reported sitting/reclining time is reported as representative of SB. Different studies showed that a single question for measuring SB has moderate to good reliability and moderate validity against accelerometers for estimating total sitting time in adults. 27 , 28 For the single question of the

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Paul F.J. Merkes, Paolo Menaspà and Chris R. Abbiss

meters in which power output is calculated with the use of strain gages. To date, the validity of power output calculated by the Velocomp PowerPod power meter is unknown. Therefore, the aim of this study was to determine the validity of the Velocomp PowerPod power meter during field cycling tests and

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Alejandro Pérez-Castilla, Belén Feriche, Slobodan Jaric, Paulino Padial and Amador García-Ramos

concurrent validity of linear velocity transducer with respect to the standard and presumably accurate force platform method for testing loaded vertical jumps still remains underexplored. Based on considerations above, we aimed to explore the concurrent validity of linear velocity transducer regarding the

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Jing Dong Liu and Pak-kwong Chung

The current study presents the development process and initial validation of a measure designed for assessing psychological needs thwarting (frustration) in a secondary school physical education context (Psychological Needs Thwarting Scale in Physical Education, PNTSPE). Secondary school students (grades 7–9) from Hong Kong (N = 1258) were invited to participate in three studies. In Study 1, item generation and initial content validity of the PNTSPE were achieved. In Study 2, the factorial structure of the measure was tested using exploratory and confirmatory factor analysis. Internal consistency reliabilities of the subscales were also examined. In Study 3, the reliability and validity of the scores derived from the PNTSPE were further examined in an independent sample. Overall, the findings from the three studies provided initial psychometric evidence for the PNTSPE and suggested that the PNTSPE could be used as a valid and reliable measure to assess Hong Kong secondary school students’ psychological needs thwarting in physical education.

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Hidde P. van der Ploeg, Kitty R.M. Streppel, Allard J. van der Beek, Luc H.V. van der Woude, Miriam Vollenbroek-Hutten and Willem van Mechelen

Background:

The objective was to determine the test-retest reliability and criterion validity of the Physical Activity Scale for Individuals with Physical Disabilities (PASIPD).

Methods:

Forty-five non-wheelchair dependent subjects were recruited from three Dutch rehabilitation centers. Subjects’ diagnoses were: stroke, spinal cord injury, whiplash, and neurological-, orthopedic- or back disorders. The PASIPD is a 7-d recall physical activity questionnaire that was completed twice, 1 wk apart. During this week, physical activity was also measured with an Actigraph accelerometer.

Results:

The test-retest reliability Spearman correlation of the PASIPD was 0.77. The criterion validity Spearman correlation was 0.30 when compared to the accelerometer.

Conclusions:

The PASIPD had test-retest reliability and criterion validity that is comparable to well established self-report physical activity questionnaires from the general population.

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Ali Brian, Laura Bostick, Angela Starrett, Aija Klavina, Sally Taunton Miedema, Adam Pennell, Alex Stribing, Emily Gilbert and Lauren J. Lieberman

& Branta, 2003 ; Kirk & Rhodes, 2011 ; Riethmuller, Jones, & Okely, 2009 ). However, the majority of gross motor interventions often lack ecological validity in that they often occur with researchers leading them or in a manner that cannot be replicated ( Brian et al., 2017a , 2017b ). Specifically

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Cody L. Sipe, Kevin D. Ramey, Phil P. Plisky and James D. Taylor

limb while in a single-limb stance on a centralized platform. It was developed from the star excursion balance test (SEBT) in an attempt to address common sources of error and method variation noted in the SEBT ( Plisky, Gorman, Butler, Underwood, & Elkins, 2009 ). The SEBT has been shown to be a valid

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Miranda J. Menaspà, Paolo Menaspà, Sally A. Clark and Maurizio Fanchini

intensity and calculate s-RPE. 8 – 10 Psychophysical ratio-scaling methods have been used to create scales where the position of the numbers and verbal anchors (ie, the words next to the scale numbers) is crucial for their psychometric properties such as reliability, validity, responsiveness, and

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Aston K. McCullough and Carol Ewing Garber

for detecting habitual physical inactivity in young children are needed. Parental proxy reports of children’s PA are a widely available and time-efficient instrument for estimating daily PA volumes in children; however, the validity of these questionnaires in young children is limited ( Oliver

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Dawn T. Gulick

was designed to establish the reliability and validity of a new orthopedic device to measure linear translation of the tibia on the femur (ACL testing). Figure 1 —Lachman test with Mobil-Aider device. Methods The gold standard used to assess the Mobil-Aider ™ was the Zeiss Smartzoom 5 Microscope