Avaliação em Educação Física e Esporte

Cevnautas da Avaliação,

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Measurement in Physical Education and Exercise Science Volume 17, Issue 3, July-September 2013

Data Mining in Elite Sports: A Review and a Framework
Bahadorreza Ofoghi, John Zeleznikow, Clare MacMahon & Markus Raab
Pages: 171-186
DOI: 10.1080/1091367X.2013.805137

Abstract

Sophisticated data analytical methods such as data mining, where the focus is upon exploration and developing new insights, are becoming increasingly useful tools in analysing elite sports performance data and supporting decision making that is crucial to gaining success. In this article, we investigate the different data mining demands of elite sports with respect to a number of features that describe sport competitions. The aim is to more structurally connect the sports and data mining domains through: (a) describing a framework for categorizing elite sports, and (b) understanding the analytical demands of different performance analysis problems. Therefore, we review different aspects such as sport categories and performance analysis requirements that influence each stage in sports data mining. We also present a model bringing together performance analysis requirements, data mining methods, data mining techniques, and technique characteristics. This will assist both data scientists and sport professionals to more effectively collaborate and contribute to success in elite sport events.

Modification and Revision of the Scale of Market Demand for Taekwondo Schools
Min Kil Kim, James Zhang, E. Newton Jackson Jr., Daniel P. Connaughton & May Kim
Pages: 187-207
DOI: 10.1080/1091367X.2013.805136

Abstract

The purpose of this study was to modify and revise the Scale of Market Demand for Taekwondo Schools (Kim, Zhang, & Ko, 2009). A questionnaire was developed that consisted of the revised Scale of Market Demand for Taekwondo Schools with seven factors (personal improvement activities, physical environment quality, instruction staff quality, program activities and offerings, cultural learning, locker room provision, and economic condition consideration), member satisfaction and member commitment variables, and demographic variables. Research participants (N = 552) were Taekwondo school participants who resided in the United States and voluntarily participated in the survey study. Conducting confirmatory factor and structural equation model analyses, the revised Scale of Market Demand for Taekwondo Schools with 7 factors and 54 items was found to have good validity and reliability characteristics. Discussion is centered on the theoretical relevance of the conceptual dimensions and their applications in marketing research and practice.

Testing Factorial Invariance of the Amotivation Inventory-Physical Education Across Gender for Urban Adolescents
Bo Shen, Alex Garn, Nate McCaughtry, Jeffrey Martin & Mariane Fahlman
Pages: 208-220
DOI: 10.1080/1091367X.2013.805138

Abstract

Lack of motivation, or amotiation, is emerging as a critical issue in high school physical education. The Amotivation Inventory-Physical Education (Shen, Winger, Li, Sun, & Rukavina, 2010) was developed to measure the multidimensional nature of amotivation construct in physical education. This study was designed to examine the consistency of the metric properties of Amotivation Inventory-Physical Education scores by evaluating their factorial structure for invariance across gender in a sample of 985 urban inner-city high school adolescents. Latent mean invariance was also tested. Results revealed that constraining factor loadings and intercepts in sequential configural, metric, and scalar invariances had no meaningful impact on model fit. However, gender might play a role in the magnitude of factor scores. Findings suggest that the four-factor structure of the Amotivation Inventory-Physical Education is a satisfactory representation of motivational deficits for urban inner-city adolescents and provide significant validity evidence for the scale scores in urban high school settings.

Validity and Reliability of the Global Physical Activity Questionnaire (GPAQ)
Stephen D. Herrmann, Kristin J. Heumann, Cheryl A. Der Ananian & Barbara E. Ainsworth
Pages: 221-235
DOI: 10.1080/1091367X.2013.805139

Abstract

There is limited published validity and reliability evidence to support using the Global Physical Activity Questionnaire. Two studies were conducted to evaluate validity and reliability evidence for the Global Physical Activity Questionnaire. In Study 1: 69 adults completed the Global Physical Activity Questionnaire (three months apart; n = 54), International Physical Activity Questionnaire, fitness and anthropometric measures. All participants wore a pedometer and 53 participants wore an accelerometer for seven days at baseline. In Study 2, 16 adults completed the Global Physical Activity Questionnaire 10 days apart. Global Physical Activity Questionnaire moderate and vigorous minutes were correlated with the accelerometer moderate (r = 0.28) and vigorous (r  = 0.48) physical activity. The Global Physical Activity Questionnaire and International Physical Activity Questionnaire were related for sedentary behaviors (r = 0.51), moderate-to-vigorous (r = 0.48) and vigorous (r = 0.63) PA. Global Physical Activity Questionnaire moderate-to-vigorous physical activity was associated with percent fat (r = −0.32), estimated VO2 max (r = 0.26), and step count (r  = 0.39). The Global Physical Activity Questionnaire demonstrated graded differences across categories for step count, body mass index, waist circumference, percent fat, fitness, and accelerometer measured activity. Short-term test–retest reliability (10 days) ranged from 0.83 to 0.96 while long-term reliability (three months) was 0.53 to 0.83. These data provide low-to-moderate validity and generally acceptable reliability evidence for the Global Physical Activity Questionnaire.

Comparing the Validity and Output of the GT1M and GT3X Accelerometer in 5- to 9-Year-Old Children
Gerda Jimmy, Roland Seiler & Urs Mäder
Pages: 236-248
DOI: 10.1080/1091367X.2013.805140

Abstract

The purpose of this study was to compare the validity and output of the biaxial ActiGraph GT1M and the triaxial GT3X (ActiGraph, LLC, Pensacola, FL, USA) accelerometer in 5- to 9-year-old children. Thirty-two children wore the two monitors while their energy expenditure was measured with indirect calorimetry. They performed four locomotor and four play activities in an exercise laboratory and were further measured during 12 minutes of a sports lesson. Validity evidence in relation to indirect calorimetry was examined with linear regression equations applied to the laboratory data. During the sports lessons predicted energy expenditure according to the regression equations was compared to measured energy expenditure with the Wilcoxon-signed rank test and the Spearman correlation. To compare the output, agreement between counts of the two monitors during the laboratory activities was assessed with Bland-Altman plots. The evidence of validity was similar for both monitors. Agreement between the output of the two monitors was good for vertical counts (mean bias = −14 ± 22 counts) but not for horizontal counts (−17 ± 32 counts). The current results indicate that the two accelerometer models are able to estimate energy expenditure of a range of physical activities equally well in young children. However, they show output differences for movement in the horizontal direction.

FONTE: http://www.tandfonline.com/toc/hmpe20/current#.UfRAUm1t7ZM

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