Time filter

Source Type

San Sebastian de los Reyes, Spain

Wu J.,Salk Institute for Biological Studies | Wu J.,San Antonio de Murcia Catholic University | Izpisua Belmonte J.C.,Salk Institute for Biological Studies
Cell | Year: 2016

The understanding of human biology and how it relates to that of other species represents an ancient quest. Limited access to human material, particularly during early development, has restricted researchers to only scratching the surface of this inherently challenging subject. Recent technological innovations, such as single cell "omics" and human stem cell derivation, have now greatly accelerated our ability to gain insights into uniquely human biology. The opportunities afforded to delve molecularly into scarce material and to model human embryogenesis and pathophysiological processes are leading to new insights of human development and are changing our understanding of disease and choice of therapy options. © 2016 Elsevier Inc. Source

De Baranda P.S.,University of Castilla - La Mancha | Ayala F.,San Antonio de Murcia Catholic University
International Journal of Sports Medicine | Year: 2010

The ACSM flexibility training recommendations emphasize proper stretching of muscles supporting the major joints, but there is a little evidence to support this recommendation in terms of effectiveness, and which stretching parameters (technique and single stretch duration) are more adequate. A randomized controlled clinical trial design was use to investigate whether the ACSM flexibility training recommendation parameters improve hip flexion range of motion. A total of 173 subjects, 122 men (21.3±2.5 years; 176.33±8.35cm; 74.42±10.80kg) and 51 women (20.7±1.6 years; 163.43±6.57cm; 60.12±7.88kg), classified as recreationally active young adult university students were randomly assigned to 1 of 7 groups: 1 control group (no stretching) or 1 of 6 stretching groups. All stretching groups performed 12 weeks of flexibility training with a consistent stretch daily dose (180s) and frequency (3 days per week) parameters and different stretch technique (passive or active) and single stretch duration (15, 30, or 45s). Hip flexion passive range of motion (PROM) was determined through the bilateral straight-leg raise test before, during (at 4 and 8 weeks), and after the program (12 weeks). All stretching groups performed hip flexion PROM after flexibility training. A significant improvement was identified in mean PROM for each stretching group, but no significant differences were found between stretch technique and single stretch duration (p>0.05). The control group's mean PROM decreased (PROM: 0.08°, 95% confidence interval [CI]=2.3 to 5.3), whereas all stretching groups increased PROM (PROM: 15.14°, 95% CI=10.19 to 23.56) in hip flexion after 12 weeks of stretching (p<0.05). The present study suggests that the current ACSM flexibility training recommendations are effective for improving hip flexion ROM in recreationally active young adults. © Georg Thieme Verlag KG Stuttgart · New York. Source

Alcaraz P.E.,San Antonio de Murcia Catholic University | Elvira J.L.L.,University Miguel Hernandez | Palao J.M.,University of Murcia
Scandinavian Journal of Medicine and Science in Sports | Year: 2014

One of the most frequently used methods for training the sprint-specific strength is the sled towing. To date, no studies have been conducted to explore the effects of this method after a training period in well-trained athletes. The purpose of this study was to determine the effects of 4 weeks of resisted sprint training with sled towing. Twenty-two trained athletes experienced in the use of weighted sled (WS) participated in the study. They conducted the same 3-week training to level their initial condition. After that they were distributed in two groups, unresisted (UR) and WS training. They carried out the same 4-week, 2 days/week sprint-specific training, only differing in that the experimental group performed sprints with a (WS) which caused a reduction of 7.5% of their maximum velocity. Pre- and posttest were conducted which included the measurement of sprint kinematics, muscular strength (including isoinertial, isokinetic, and jump measurements), and sprinting stiffness (leg and vertical). Results show different adaptations in the groups although no interaction effect was found. The WS group improved the velocity in the transition phase, while the UR group improved the velocity in the maximum velocity phase. No improvements in the height of the jump tests were found. © 2012 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. Source

Media can not ignore the increasing levels of audience participation and its new role as content producer. This fact is a natural characteristic of Web 2.0 and implies reformulations for journalism, and also for the newsrooms. Audiences can participate even before the news happens, at planning the agenda or looking for sources. In this sense, the real convergence of digital media is not with the platforms, but with their audiences. The specific debate about what a digital newsroom must be is the main issue discussed in this article, that shows a general overview from the first initiatives in the USA to the latest actions in Spain, and from models closer to "reality journalism" to other open projects such as the "Google newsroom". Source

Arias J.L.,San Antonio de Murcia Catholic University | Castejon F.J.,Autonomous University of Madrid
Journal of Teaching in Physical Education | Year: 2012

Investigators' increased interest in teaching game tactics requires generalizable assessment instruments that are appropriate to whatever is needed by the tactic. This literature review aims to provide information about the instruments most frequently used to assess tactics in youth sports. We found that very few studies used instruments that fulfilled the criteria required by this review. The most frequently used tool was The Game Performance Assessment Instrument, followed by the Team Sport Assessment Procedure. Some other instruments, labeled Nonhabitual instruments, were only used sporadically. The instruments were mainly used in invasion and net/wall games. Each instrument defined a set of components and indexes to quantify the assessment, but only the Game Performance Assessment Instrument allows the assessment of the attack and the defense both of the player who possesses the ball and the player who does not. Suggestions were proposed for instruments to be used for assessing tactics. © 2012 Human Kinetics, Inc. Source

Discover hidden collaborations