Search Results

You are looking at 61 - 70 of 2,952 items for :

Clear All
Restricted access

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

Restricted access

Nora E. Miller, Scott J. Strath, Ann M. Swartz and Susan E. Cashin

This study examined the predictive validity of accelerometers (ACC) to estimate physical activity intensity (PAI) across age and differences in intensity predictions when expressed in relative and absolute PAI terms. Ninety adults categorized into 3 age groups (20–29, 40–49, and 60–69 yr) completed a treadmill calibration study with simultaneous ACC (7164 Actigraph) and oxygen-consumption assessment. Results revealed strong linear relations between ACC output and measured PAI (R 2 = .62–.89) across age and similar ACC cut-point ranges across age delineating absolute PAI ranges compared with previous findings. Comparing measured metabolic equivalents (METs) with estimated METs derived from previously published regression equations revealed that age did not affect predictive validity of ACC estimates of absolute PAI. Comparing ACC output expressed in relative vs. absolute terms across age revealed substantial differences in PAI ACC count ranges. Further work is warranted to increase the applicability of ACC use relative to PAI differences associated with physiological changes with age.

Restricted access

Panteleimon Ekkekakis, Eric E. Hall and Steven J. Petruzzello

Two studies were conducted to examine the internal consistency and validity of the state anxiety subscale of the State-Trait Anxiety Inventory (SAI) in the context of acute exercise. SAI responses typically found in the exercise literature were replicated. Analysis at the item level revealed divergent response patterns, confounding the total SAI score. During moderate and immediately after vigorous exercise, scores on items referring to cognitive antecedents of anxiety decreased, whereas scores on items assessing perceived activation increased. Indices of internal showed exercise-associated decreases. A principal-components analysis of responses immediately postexercise revealed a multidimensional structure, distinguishing “cognitive” and “activation” items. By failing to discern exercise-induced and anxiety-related increases in activation from anxiety-antecedent appraisals, the SAI exhibits compromised internal consistency and validity in the context of acute exercise.

Restricted access

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

Restricted access

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

Restricted access

Natalia Romero-Franco, Juan Antonio Montaño-Munuera, Juan Carlos Fernández-Domínguez and Pedro Jiménez-Reyes

in sport to strengthen the quadriceps muscles 18 and its importance in sports movements (ie, running or kicking a ball), it is necessary to have affordable and portable tools to evaluate knee proprioception in OKC. Thus, we aimed to analyze the validity, intertester, and intratester reliability of

Restricted access

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

Restricted access

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 (Carl

Open access

Zhen Zeng, Christoph Centner, Albert Gollhofer and Daniel König

extent of BFR as well as assessing the AOP in BFR research. 17 – 21 However, there is a lack of evidence regarding the accuracy of PO in determining both lower- and upper-limb AOP for BFR protocols. Therefore, the main purpose of this study was to evaluate the validity between PO for measuring the AOP

Restricted access

Eva Piatrikova, Ana C. Sousa, Javier T. Gonzalez and Sean Williams

applied in multiple sports such as cycling, 6 running, 7 rowing, 8 and team sports, 9 only 2 attempts have been made to validate the 3MT in free swimming. 10 , 11 Tsai and Thomas 10 assessed the validity of the 3MT in recreational swimmers and found that D 3 MT ′ was lower compared with D CM