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Raúl Reina, Francisco J. Moreno, and David Sanz

The purpose of this study was to determine visual behavior and motor responses between experienced and novice wheelchair tennis players relative to the return in tennis. Novice (n = 7) and Experienced (n = 5) wheelchair tennis players took part in the study. Two series of serves performed to the forehand and the backhand sides were examined in both groups. One series was performed in a video-based setting (two dimensional) and the other one on court (three dimensional). Experienced participants focused initially on the head/shoulders and the free-arm, while novice players focused on the expected ball toss area or followed the ball from the toss to the apex. Results suggest that the experienced players obtain useful information from racket-arm cues during the stroke phase. They also performed faster motor responses as well.

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Francisco J. Llorente-Cantarero, Francisco J. Aguilar-Gómez, Gloria Bueno-Lozano, Augusto Anguita-Ruiz, Azahara I. Rupérez, Rocío Vázquez-Cobela, Katherine Flores-Rojas, Concepción M. Aguilera, Luis A. Moreno, Ángel Gil, Rosaura Leis, and Mercedes Gil-Campos

Childhood obesity has been related to metabolic syndrome and low-grade chronic inflammation. This study aimed to evaluate the impact of physical activity intensities and practice on inflammation, endothelial damage, and cardiometabolic risk factors in children. There were 513 participants, aged 6–14 years, recruited for the study. Physical activity was measured by accelerometry, and the children were classified into four groups according to quartiles of moderate to vigorous physical activity (MVPA) practice as very low active, low active, moderate active, and high active. Anthropometric measures, blood pressure, and plasma metabolic and proinflammatory parameters were analyzed. Very low active group presented a worse lipid profile and higher insulin, leptin, adiponectin, resistin, matrix metallopeptidase-9, and tissue plasminogen activator inhibitor-1, while lower levels of tumor necrosis factor-alpha, Type 1 macrophages, and interleukin 8 than high-active children. Regression analyses showed that a higher MVPA practice was associated with lower levels of triacylglycerols (β: −0.118; p = .008), resistin (β: −0.151; p = .005), tPAI (β: −0.105; p = .046), and P-selectin (β: −0.160; p = .006), independently of sex, age, and body mass index (BMI). In contrast, a higher BMI was associated with higher levels of insulin (β: 0.370; p < .001), Homeostasis Model Assessment (β: 0.352; p < .001), triacylglycerols (β: 0.209; p < .001), leptin (β: 0.654; p < .001), tumor necrosis factor-alpha (β: 0.182; p < .001), Type 1macrophages (β: 0.181; p < .001), and tissue plasminogen activator inhibitor (β: 0.240; p < .001), independently of sex, age, and MVPA. A better anthropometric, metabolic, and inflammatory profile was detected in the most active children; however, these differences were partly due to BMI. These results suggest that a higher MVPA practice and a lower BMI in children may lead to a better cardiometabolic status.

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Palma ChiMón, Francisco B. Ortega, Jonatan R. Ruiz, Ilse De Bourdeaudhuij, David Martínez-Gómez, Germán Vicente-Rodriguez, Kurt Widhalm, Dénes Molnar, Frédéric Gottrand, Marcela González-Gross, Dianne S. Ward, Luis A. Moreno, Manuel J. Castillo, and Michael Sjöström

Chillón and Ruiz are with the Department of Physical Education and Sport, University of Granada, Spain. Chillón and Ward are with the Center for Health Promotion and Disease Prevention, University of North Carolina at Chapel Hill, NC, USA. Ortega, Ruiz and Sjöström are with the Unit for Preventive Nutrition, Department of Biosciences and Nutrition, Karolinska Institutet, Sweden. Ortega and Castillo are with the Department of Medical Physiology, University of Granada, Spain. De Bourdeaudhuij is with the Department of Movement and Sport Sciences, Ghent University, Belgium. Martínez-Gómez is with the Immunonutrition Research Group, Department of Metabolism and Nutrition, ICTAN, Spanish National Research Council (CSIC), Spain. Vicente-Rodríguez and Moreno are with Growth, Exercise, Nutrition and Development (GENUD) Research Group, Universidad de Zaragoza, Spain. Widhalm is with the Department of Paediatrics, Division of Clinical Nutrition, Medical University of Vienna, Austria. Molnar is with the Deprtment of Paediatrics, Clinical Center, University of Pécs, Hungary. Gottrand is with Inserm U995, University Lille2 and CIC-9301-CH&U-Inserm, University Hospital of Lille, France. González-Gross is with the Department of Health and Human Performance, Universidad Politécnica de Madrid, Spain.