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Research Quarterly for Exercise and Sport

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https://www.readbyqxmd.com/read/28537791/mental-rotation-of-tactical-instruction-displays-affects-information-processing-demand-and-execution-accuracy-in-basketball
#1
Till Koopmann, Yvonne Steggemann-Weinrich, Jochen Baumeister, Daniel Krause
PURPOSE: In sports games, coaches often use tactic boards to present tactical instructions during time-outs (e.g., 20 s to 60 s in basketball). Instructions should be presented in a way that enables fast and errorless information processing for the players. The aim of this study was to test the effect of different orientations of visual tactical displays on observation time and execution performance. High affordances in visual-spatial transformation (e.g., mental rotation processes) might impede information processing and might decrease execution performance with regard to the instructed playing patterns...
May 24, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28524729/preschoolers-physical-activity-participation-across-a-yearlong-mastery-motivational-climate-intervention
#2
Danielle D Wadsworth, Mary E Rudisill, Peter A Hastie, Jacqueline M Irwin, Mynor G Rodriguez-Hernandez
PURPOSE: This study sought to determine how children's participation in physical activity during a mastery-motivational climate changed during a 20-week intervention and to compare it to children's free-play activity during a typical day at their local day-care facility. METHOD: Twelve 4-year-old children participated in a mastery-motivational climate physical activity program delivered 2 days a week for 20 weeks during a period of 8 months. All children were fitted with an Actigraph GT3X triaxial accelerometer...
May 19, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28524725/a-sport-education-fitness-season-s-impact-on-students-fitness-levels-knowledge-and-in-class-physical-activity
#3
Jeffery Kurt Ward, Peter A Hastie, Danielle D Wadsworth, Shelby Foote, Sheri J Brock, Nikki Hollett
PURPOSE: The purpose of this study was to determine the extent to which a sport education season of fitness could provide students with recommended levels of in-class moderate-to-vigorous physical activity (MVPA) while also increasing students' fitness knowledge and fitness achievement. METHOD: One hundred and sixty-six 5th-grade students (76 boys, 90 girls) participated in a 20-lesson season called "CrossFit Challenge" during a 4-week period. The Progressive Aerobic Cardiovascular Endurance Run, push-ups, and curl-ups tests of the FITNESSGRAM® were used to assess fitness at pretest and posttest, while fitness knowledge was assessed through a validated, grade-appropriate test of health-related fitness knowledge (HRF)...
May 19, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28506112/resting-bradycardia-enhanced-postexercise-heart-rate-recovery-and-cardiorespiratory-fitness-in-recreational-ballroom-dancers
#4
Carlos Janssen Gomes da Cruz, Guilherme Eckhardt Molina, Luiz Guilherme Grossi Porto, Luiz Fernando Junqueira
PURPOSE: In a cross-sectional study design, we evaluated the resting heart rate (HRbaseline) and exercise and postexercise stress test-related chronotropic responses in male practitioners of recreational ballroom dancing (BD; n = 25, Mage = 26.6 ± 6.1 years) compared to a control group of insufficiently active nondancers (CG; n = 25, Mage = 25.9 ± 4.5 years). METHOD: All participants underwent a submaximal exercise test. At 85% of the maximal predicted HR, the recovery protocol was started, and heart rate recovery (HRR) was recorded during 1-min intervals for 5 min...
May 16, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28494196/misremembering-past-affect-predicts-adolescents-future-affective-experience-during-exercise
#5
Melissa M Karnaze, Linda J Levine, Margaret Schneider
PURPOSE: Increasing physical activity among adolescents is a public health priority. Because people are motivated to engage in activities that make them feel good, this study examined predictors of adolescents' feelings during exercise. METHOD: During the 1st semester of the school year, we assessed 6th-grade students' (N = 136) cognitive appraisals of the importance of exercise. Participants also reported their affect during a cardiovascular fitness test and recalled their affect during the fitness test later that semester...
May 11, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28402178/top-10-research-questions-related-to-youth-aerobic-fitness
#6
Neil Armstrong
Peak oxygen uptake ([Formula: see text]2) is internationally recognized as the criterion measure of youth aerobic fitness, but despite pediatric data being available for almost 80 years, its measurement and interpretation in relation to growth, maturation, and health remain controversial. The trainability of youth aerobic fitness continues to be hotly debated, and causal mechanisms of training-induced changes and their modulation by chronological age, biological maturation, and sex are still to be resolved...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28388362/sedentary-behavior-and-health-broadening-the-knowledge-base-and-strengthening-the-science
#7
Nyssa Hadgraft, Neville Owen
We provide an overview of a recently published, edited book in a rapidly emerging field of research, policy, and practice for physical activity: Sedentary Behavior and Health. In this commentary, we highlight the broad perspectives provided in the 27 chapters of Sedentary Behavior and Health and suggest a research strategy to move the field forward-not only with scientific rigor, but also with breadth of scholarship. The book's chapters provide an overview of the background to and contexts for sedentary behavior and health...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28388333/blunted-myoglobin-and-quadriceps-soreness-after-electrical-stimulation-during-the-luteal-phase-or-oral-contraception
#8
Lindsey J Anderson, Lucinda L Baker, E Todd Schroeder
PURPOSE: Acute muscle damage after exercise triggers subsequent regeneration, leading to hypertrophy and increased strength after repeated exercise. It has been debated whether acute exercise-induced muscle damage is altered under various premenopausal estrogen conditions. Acute contraction-induced muscle damage was compared during exogenous (oral contraceptive, OC), endogenous (luteal phase, HI), or low (menses, LO) estrogen in healthy young women aged 21 to 30 years old. METHODS: Women (OC, n = 9; HI, n = 9; LO, n = 8; total N = 26) performed 1 neuromuscular electrical stimulation (NMES) bout...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28388290/the-role-of-postural-support-in-young-adults-control-of-stationary-kicking
#9
Ben Sidaway, Matthew Bouchard, Julie Chasse, Jonathan Dunn, Andrea Govoni, Breanne McPherson, Katherine Roy, David I Anderson
PURPOSE: The requirement for postural stability during the performance of motor skills has been clearly demonstrated in infants, but the necessity for such a postural substrate is not well documented in adults. The present study investigated the role of postural stability during a ballistic ball-kicking task in adults by providing varying degrees of external postural support. METHOD: In the 1st experiment, 30 participants performed 20 maximal-velocity kicks under each of 3 conditions: grasping a rigid stable handle, light fingertip touch, and grasping a suspended elastic tube...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28362223/examining-the-error-of-mis-specifying-nonlinear-confounding-effect-with-application-on-accelerometer-measured-physical-activity
#10
Paul H Lee
PURPOSE: Some confounders are nonlinearly associated with dependent variables, but they are often adjusted using a linear term. The purpose of this study was to examine the error of mis-specifying the nonlinear confounding effect. METHODS: We carried out a simulation study to investigate the effect of adjusting for a nonlinear confounder in the estimation of a causal relationship between the exposure and outcome in 3 ways: using a linear term, binning into 5 equal-size categories, or using a restricted cubic spline of the confounder...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28362217/can-graduated-compressive-stockings-reduce-muscle-activity-during-running
#11
Ángel Gabriel Lucas-Cuevas, José Ignacio Priego Quesada, José Vicente Giménez, Inmaculada Aparicio, Juan Manuel Cortell-Tormo, Pedro Pérez-Soriano
PURPOSE: Graduated compressive stockings (GCS) have been suggested to influence performance by reducing muscle oscillations and improving muscle function and efficiency. However, no study to date has analyzed the influence of GCS on muscle activity during running. The objective of the study was to analyze the influence of GCS on the perception of comfort and muscle activation of the main muscles of the lower leg during running. METHOD: Thirty-six participants ran on a treadmill with (GCS) or without (control) GCS...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28362163/ties-that-bond-youth-sport-as-a-vehicle-for-social-identity-and-positive-youth-development
#12
Mark W Bruner, Shea M Balish, Christopher Forrest, Sarah Brown, Kristine Webber, Emily Gray, Matthew McGuckin, Melanie R Keats, Laurene Rehman, Christopher A Shields
An emerging area of research has focused on understanding how the group dynamics of a sport team influence positive youth development (PYD). The identities that youth form through their membership in sport teams (i.e., social identities) have been found to influence teammate behavior and team performance. Yet, minimal work exists on social identity and PYD in youth sport. PURPOSE: The purpose of this study was to investigate the relationship between social identity and PYD in sport. METHOD: Youth engaged in recreational sport (N = 219; Mage = 11...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28339350/the-effect-of-initial-knee-angle-on-concentric-only-squat-jump-performance
#13
Lachlan J Mitchell, Christos K Argus, Kristie-Lee Taylor, Jeremy M Sheppard, Dale W Chapman
PURPOSE: There is uncertainty as to which knee angle during a squat jump (SJ) produces maximal jump performance. Importantly, understanding this information will aid in determining appropriate ratios for assessment and monitoring of the explosive characteristics of athletes. METHOD: This study compared SJ performance across different knee angles-90º, 100º, 110º, 120º, 130º, and a self-selected depth-for jump height and other kinetic characteristics. For comparison between SJ and an unconstrained dynamic movement, participants also performed a countermovement jump from a self-selected depth...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28332935/correction-to-computerized-agility-training-improves-change-of-direction-and-balance-performance-independently-of-footwear-in-young-adults
#14
Max R Paquette, Brian K Schilling, Joshua D Bravo, Shelby A Peel, Yuhua Li, Robert J Townsend
No abstract text is available yet for this article.
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28332919/the-attention-window-a-narrative-review-of-limitations-and-opportunities-influencing-the-focus-of-attention
#15
Stefanie Hüttermann, Daniel Memmert
PURPOSE: Visual attention is essential in many areas ranging from everyday life situations to the workplace. Different circumstances such as driving in traffic or participating in sports require immediate adaptation to constantly changing situations and frequently the conscious perception of 2 objects or scenes at the same time. METHOD: The attention window task, a measure of attentional breadth, in which people must attend to 2 equally attention-demanding stimuli simultaneously, was introduced...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28328311/effect-of-active-lessons-on-physical-activity-academic-and-health-outcomes-a-systematic-review
#16
Rosemarie Martin, Elaine M Murtagh
PURPOSE: The purpose of this study was to conduct a systematic review of classroom-based physical activity interventions that integrate academic content and assess the effectiveness of the interventions on physical activity, learning, facilitators of learning, and health outcomes. METHOD: Six electronic databases (ERIC, PubMed, Google Scholar, Science Direct, Cochrane Library, and EMBASE) and reference lists were searched for English-language articles, published January 1990 through March 2015, reporting classroom-based interventions that deliberately taught academic content using physically active teaching methods for at least 1 week duration, with physical activity, health, learning, or facilitators-of-learning outcomes...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28272998/assessing-fat-mass-of-adolescent-swimmers-using-anthropometric-equations-a-dxa-validation-study
#17
Gabriel Lozano-Berges, Alejandro Gómez-Bruton, Ángel Matute-Llorente, Cristina Julián-Almárcegui, Alba Gómez-Cabello, Alejandro González-Agüero, José A Casajús, Germán Vicente-Rodríguez
PURPOSE: The aim of the present study was to determine which of the published anthropometric equations is the most appropriate to estimate body-fat percentage (BF%) in adolescent swimmers. METHOD: Eighty-eight swimmers (45 boys, 43 girls) participated in this study. Following the recommendations of the International Society of the Advancement of Kinanthropometry, biceps, triceps, subscapular, iliac-crest, supraspinale, front-thigh, and medial calf skinfold thicknesses were measured...
June 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28151087/effects-of-isometric-hand-grip-muscle-contraction-on-young-adults-free-recall-and-recognition-memory
#18
Phillip D Tomporowski, Chelesa Albrecht, Daniel M Pendleton
PURPOSE: The purpose of this study was to determine if physical arousal produced by isometric hand-dynamometer contraction performed during word-list learning affects young adults' free recall or recognition memory. METHOD: Twenty-four young adults (12 female; Mage = 22 years) were presented with 4 20-item word lists. Moderate arousal was induced in 12 adults by an initial 30-s maximal hand-dynamometer squeeze with force productions of 50% maximum; low arousal was induced in 12 adults by an initial 1-s maximal dynamometer squeeze with force production of 10% maximum during learning...
March 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28151062/a-content-analysis-of-physical-activity-in-tv-shows-popular-among-adolescents
#19
Megan S Gietzen, Sarah E Gollust, Jennifer A Linde, Dianne Neumark-Sztainer, Marla E Eisenberg
PURPOSE: Previous research has demonstrated that television has the potential to influence youth behaviors, but little evidence exists on how television depicts physical activity (PA), an important public health priority for youth. This mixed-methods study investigated depictions of television characters' participation in PA in the top 25 favorite shows ranked by a diverse sample of 2,793 adolescents. METHOD: Randomly selected episodes from each show were content-analyzed for PA incidents, reasons, and context and in relation to the gender and weight status of participating characters...
March 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28129075/associations-between-self-control-practice-and-skill-level-in-sport-expertise-development
#20
Rafael A B Tedesqui, Bradley W Young
PURPOSE: The purpose of this study was to test the association between self-control (SC) variables and (a) sport-specific practice amounts, (b) engagement in various practice contexts, (c) threats to commitment to one's sport, and (d) skill development using the Brief Self-Control Scale (BSCS) in a diverse sport sample. METHOD: Two hundred forty-four athletes (47% female; Mage = 21.96 years, SD = 6.98 years; 68.8% individual sports and 31.2% team sports; 13...
March 2017: Research Quarterly for Exercise and Sport
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