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Bronwyn K. Clark, Nyssa T. Hadgraft, Takemi Sugiyama and Elisabeth A. Winkler

monitor, similarly experienced lower accuracy in location classification when participants transitioned between locations versus when they remained in the same location continuously ( Magistro et al., 2018 ). These findings suggest it may be possible to use Bluetooth to derive valid measures of office

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Darren Steeves, Leo J. Thornley, Joshua A. Goreham, Matthew J. Jordan, Scott C. Landry and Jonathon R. Fowles

tests was investigated to determine their utility in a kayak-specific testing program. Methods Participants The study consisted of a reliability segment followed by a validity segment. Highly trained male and female kayakers were recruited for both segments of this investigation. All participants were

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Nadia C. Valentini, Lisa M. Barnett, Paulo Felipe Ribeiro Bandeira, Glauber Carvalho Nobre, Larissa Wagner Zanella and Rodrigo Flores Sartori

limited to the population in which the instrument was validated; consequently, content and construct validity must be addressed in other cultures ( Vallerand & Halliwell, 1989 ; Yun & Ulrich, 2002 ). A recent validation investigated the use of the 12 FMS items as part of the PMSC in around 200 Portuguese

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Damir Zubac, Drazen Cular and Uros Marusic

Olympic combat athletes, 8 an ongoing debate persists in the literature regarding noninvasive whole-body fluid-deficit characterization in this athletic community. For example, a cross-sectional study of Fernandez-Elias et al 9 recommended U SG as a valid alternative to track fluid deficit in Spanish

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Zachary C. Pope, Nan Zeng, Xianxiong Li, Wenfeng Liu and Zan Gao

technology to provide daily EE estimates at rest, during activities of daily living, and during PA or exercise ( Fitbit, 2016 ; TomTom, 2017 ). Only a paucity of the available literature, however, has conducted smartwatch EE estimate validation. Indeed, literature has mostly examined the validity of

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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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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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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.