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The aim of this study is to determine the reliability and generalizability of the data structure from the assessment, through tensiomyography (TMG), the parameters of muscle time contraction (TC) and maximum radial displacement of the muscle belly (DM) of the vastus medialis, vastus lateralis, rectus femoris and biceps femoris muscles of 10 professional road cyclists. TMG measurements took place during the preparatory period and the competitive period. An analysis of variance components by least-squares procedure and maximum likelihood (<.0001), and an analysis of generalizability was performed. The results indicate that the values of error of the variance components analysis by least-squares procedure and maximum likelihood are identical for TC and DM variables, which enables us to consider the sample as normal, linear and homoscedastic. The precision model of the TC variable shows a suitable level of reliability and generalizability (e² = .89 Φ = .83). The model of DM variable shows a suitable level of reliability and a generalizability close to the proper one (e² = .826 Φ = .785). The optimization of the design with the variable TC achieved excellent levels of reliability e² = .94) and generalizability (Φ = .90), as well as the variable DM (e² = .92 Φ = .90). The importance of this work lies in the use of TMG as a primary intervention technique in the prevention of muscle injuries through the calculation of symmetries and their compensation with guaranteed reliability, accuracy and validity. [ABSTRACT FROM AUTHOR]

The assessment of perceived quality has become important in the management of service providing organizations. The aim of this paper is to develop a brief, easy-to-apply scale with appropriate psychometric properties, which allows the incorporation of users' perceptions of the management of golf clubs. We interviewed 403 users of [our 9-hole course golf clubs located in Galicia (316 males and 87 females) aged between 16 and 75 years (Mean = 47.19: SD = 13.91). For data collection, an ad hoc structured questionnaire which had 25 items grouped into 4 dimensions was used. As a result of Exploratory Factor Analysis and a subsequent Confirmatory Factor Analysis, it was possible to obtain a final scale made up of only 15 items, grouped into three dimensions. This scale, as well as being brief and easy-to-apply, has a high degree of validity (as it explains 72% of the perceived performance) and internal consistency (overall ct of .91 ), thus making it a tool of considerable applied interest. [ABSTRACT FROM AUTHOR]