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Journal of Sports Sciences

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https://www.readbyqxmd.com/read/30238836/the-validity-of-the-commercially-available-low-cost-wrist-worn-movband-accelerometer-during-treadmill-exercise-and-free-living-physical-activity
#1
Jacob E Barkley, Ellen Glickman, Curtis Fennell, Mallory Kobak, Megan Frank, Gregory Farnell
Low-cost physical activity monitors may provide a more accurate measure of physical activity than subjective methods (e.g., self-report) while being less costly than research-grade accelerometers. The present study assessed the validity of a low-cost monitor (Movband 2) to estimate physical activity behavior/intensity. Participants (N = 23, n = 16 female, BMI = 22.9 ± 4.0 kg/m2 , age = 21.9 ± 1.6 years) completed four, five-minute treadmill stages (2.0, 3.0, 4.0, 5.0 MPH) while wearing both the Movband and the previously-validated Actigraph monitor...
September 21, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30207506/the-impact-of-chronic-carbohydrate-manipulation-on-mucosal-immunity-in-elite-endurance-athletes
#2
Alannah K A McKay, David B Pyne, Peter Peeling, Avish P Sharma, Megan L R Ross, Louise M Burke
Carbohydrate (CHO) availability could alter mucosal immune responses to exercise. This study compared the effect of three dietary approaches to CHO availability on resting and post-exercise s-IgA levels. Elite race walkers (n = 26) adhered to a high CHO diet (HCHO), periodised CHO availability (PCHO) or a low CHO/high fat diet (LCHF) for 3 weeks while completing an intensified training program. HCHO and PCHO groups consumed 8.0-8.5 g.kg-1 CHO daily, with timing of ingestion manipulated to alter CHO availability around key training sessions...
September 12, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30188249/collegiate-baseball-players-with-more-optimal-functional-movement-patterns-demonstrate-better-athletic-performance-in-speed-and-agility
#3
Yu-Pin Liang, Yi-Liang Kuo, Hsiang-Chin Hsu, Yen-Ysung Hsia, Ya-Wen Hsu, Yi-Ju Tsai
Sports injuries are common among baseball players and may result in abnormal movement patterns, increased risks of future injury, and unsatisfactory performance. The Functional Movement Screen (FMS™) has been developed to detect abnormal functional movement patterns and can be used for predicting risks of sports injury. However, whether FMS™ scores are associated with athletic performance remains unclear. The goal of this study was to determine the association between functional movements and athletic performance in elite baseball players...
September 6, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30175947/elbow-joint-kinematics-during-cricket-bowling-using-magneto-inertial-sensors-a-feasibility-study
#4
Denny Wells, Jacqueline Alderson, Valentina Camomilla, Cyril Donnelly, Bruce Elliott, Andrea Cereatti
Magnetic and inertial measurement units (MIMUs) may provide an accessible, three-dimensional, in-field alternative to laboratory-restricted marker-based motion capture. Existing upper limb MIMU models have predominantly been validated with low-velocity motion and their suitability for use with sport-based movements remains relatively untested. We propose a MIMU system approach to enable the estimation of anatomically meaningful and participant-specific elbow kinematics with considerations for use with cricket bowling...
September 3, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30141737/effects-of-audiovisual-stimuli-on-psychological-and-psychophysiological-responses-during-exercise-in-adults-with-obesity
#5
Marcelo Bigliassi, João P A Greca, Vinícius Barreto-Silva, Priscila Chierotti, Arli R de Oliveira, Leandro R Altimari
The present experiment sought to further understanding of the effects of personalised audiovisual stimuli on psychological and psychophysiological responses during exercise in adults with obesity. Twenty-four participants (Mage  = 28.3, SD = 5.5 years; MBMI  = 32.2, SD = 2.4) engaged in self-paced exercises on a recumbent cycle ergometer and three conditions (sensory stimulation [ST], sensory deprivation [DE], and control [CO]) were administered. Perceptual (attentional focus and perceived exertion), affective (affective state and perceived activation), and psychophysiological (heart rate variability) parameters were monitored throughout the exercise bouts...
August 24, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30132402/why-do-bad-balls-get-wickets-the-role-of-congruent-and-incongruent-information-in-anticipation
#6
Oliver R Runswick, André Roca, A Mark Williams, Allistair P McRobert, Jamie S North
Skilled anticipation is underpinned by the use of kinematic and contextual information. However, few researchers have examined what happens when contextual information suggests an outcome that is different from the event that follows. We aimed to bridge this gap by manipulating the relationship between contextual information and final ball location in a cricket-batting task. We predicted that when contextual information is congruent with the eventual outcome then anticipation would be facilitated. In contrast, when contextual information is incongruent, this would lead to a confirmation bias on kinematic information and result in decreased anticipation accuracy...
August 22, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30124376/association-between-socio-economic-status-and-physical-activity-is-mediated-by-social-support-in-brazilian-students
#7
Amanda M George, Jaqueline Aragoni da Silva, Alexsandra da Silva Bandeira, Valter Cordeiro Barbosa Filho, Linda E Rohr, Adair da Silva Lopes, Kelly Samara da Silva
This study evaluated whether the relationship between socioeconomic status (SES) and moderate-to-vigorous physical activity (MVPA) is mediated by social support of peers and parents. A cross-sectional study included students (n = 1182) aged 11 to 18 years who were recruited in 2014 from public schools in Fortaleza, Brazil. Participants completed a questionnaire to assess all variables. Mediation analyses were performed to determine the role of parental support and peer support on the relationship between SES and MVPA...
August 20, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30113241/utility-of-international-normative-20-m-shuttle-run-values-for-identifying-youth-at-increased-cardiometabolic-risk
#8
Duncan S Buchan, Gareth Knox, Anwen M Jones, Grant R Tomkinson, Julien S Baker
The purpose of this study was to examine the ability of international normative centiles for the 20 m shuttle run test (20mSRT) to identify youth at increased cardiometabolic risk. This was a cross-sectional study involving 961 children aged 10-17 years (53% girls) from the United Kingdom. Receiver operating characteristic (ROC) curves determined the discriminatory ability of cardiorespiratory fitness percentiles for predicting increased cardiometabolic risk. ROC analysis demonstrated a significant but poor discriminatory accuracy of cardiorespiratory fitness in identifying low/high cardiometabolic risk in girls (AUC = 0...
August 16, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30105950/impact-of-cultural-background-on-fundamental-movement-skill-and-its-correlates
#9
Lisa M Barnett, Rohan M Telford, Claudia Strugnell, James Rudd, Lisa S Olive, Richard D Telford
Children's fundamental movement skill levels (FMS) predict moderate-to-vigorous physical activity (MVPA). Asian children have been reported as less active than English-Europeans, possibly due to poorer skills. This study compared the FMS of children from Culturally and Linguistically Diverse (CALD) backgrounds and examined FMS correlates. A total of 261 children (122 males) aged 9-to-11 years were divided based on language spoken at home: English-European (n = 105) and Asian (n = 156). Height, mass, FMS (Test of Gross Motor Development-2), MVPA (accelerometer) and cardio-respiratory fitness (20m multistage shuttle run) were directly measured...
August 14, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30095040/analysis-of-foot-strike-pattern-rearfoot-dynamic-and-foot-rotation-over-childhood-a-cross-sectional-study
#10
Pedro Ángel Latorre Román, Fernando Redondo Balboa, Juan Párraga Montilla, Víctor Manuel Soto Hermoso, Pedro José Consuegra González, Felipe García Pinillos
The purpose of this study was to determine the foot strike patterns (FSP), rearfoot position at initial contact (RPic, i.e., No INV/EVE) and foot rotation in children in relation to age. A total of 932 children aged 3 to 16 years participated in this study. A sagittal and frontal-plane video was recorded using a high-speed camcorder to analyse these variables. There is a significant increase (p < 0.001) of rearfoot strike patterns (RFS) prevalence in relation to age; e.g. preschool children (3-6 years old) displayed an RFS prevalence 46...
August 10, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30084752/physical-fitness-predicts-the-academic-achievement-over-one-school-year-follow-up-period-in-adolescents
#11
Francisco Javier Gil-Espinosa, Cristina Cadenas-Sanchez, Palma Chillón
The purposes of this study were to examine how fitness at the baseline could predict both academic achievement and academic achievement changes one school year in advance. A total of 194 adolescents (mean age: 14.15 ± 0.97 years old, 112 boys) who attended secondary school participated in our study. Cardiorespiratory fitness was measured with the 20 m endurance shuttle-run test. We also assessed the lower-limbs muscular strength with the standing long jump test and flexibility with the sit-and-reach test...
August 7, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30084310/is-there-a-sweet-spot-on-the-foot-in-australian-football-drop-punt-kicking
#12
James Peacock, Kevin Ball
In the collision between a striking implement and ball, the term "sweet spot" represents the impact location producing best results. In football kicking, it is not known if a sweet spot exists on the foot because no method to measure impact location in three-dimensional space exists. Therefore, the aims were: (1) develop a method to measure impact location on the foot in three-dimensional space; (2) determine if players impacted the ball with a particular location; (3) determine the relationship between impact location with kick performance; (4) discuss if a sweet spot exists on the foot...
August 7, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30084306/the-feasibility-of-fundamental-movement-skill-assessments-for-pre-school-aged-children
#13
Brooke Klingberg, Natasha Schranz, Lisa M Barnett, Verity Booth, Katia Ferrar
Fundamental movement skill (FMS) assessment in preschools allows for early intervention; however it is unclear what assessments are feasible. The purpose of this review is to systematically review the feasibility of FMS assessments for pre-school aged children. The search was conducted across four databases, MEDLINE, Scopus, ERIC and SportsDiscus. Search terms included synonyms of "fundamental movement skills" and "pre-school children". Inclusion criteria were: (i) FMS assessment; (ii) feasibility data; (iii) assessment of children aged three to six years; (iv) assessment of typically developing children; and (v) peer reviewed full text publications in English...
August 7, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30084302/metabolic-and-kinematic-responses-while-walking-and-running-on-a-motorised-and-a-curved-non-motorised-treadmill
#14
Paolo Bruseghini, Enrico Tam, Andrea Monte, Carlo Capelli, Paola Zamparo
The purpose of this study was to assess metabolic and kinematic parameters (contact and flight time, step length and frequency) while walking at the preferred speed (1.44 ± 0.22 m · s-1 ) and while performing an incremental running test (up to exhaustion) on a motorised treadmill (MT) and on a curved non-motorised treadmill (CNMT). Twenty-five volunteers (24.1 ± 3.4 years; 64.7 ± 11.2 kg) participated in the study. Maximal running speed on MT was significantly larger (P < 0.001) than on CNMT (4...
August 7, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30074436/elite-male-field-hockey-players-have-symmetric-isokinetic-glenohumeral-strength-profiles-but-show-asymmetry-in-scapular-muscle-strength
#15
Fran Vanderstukken, Nick Jansen, Tom Mertens, Ann M Cools
Shoulders of elite field hockey players are loaded continuously during play. However, shoulder girdle muscle performance in this population has never been examined yet. This study aimed to compare isokinetic shoulder girdle performance in elite male field hockey players to matched controls, with respect to strength, endurance and muscle balance. The complete male national field hockey team of Belgium (n = 25) was included and matched to a gender- and age-matched control group of healthy participants (n = 25)...
August 3, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30074432/do-aerobic-characteristics-explain-isometric-exercise-induced-neuromuscular-fatigue-and-recovery-in-upper-and-lower-limbs
#16
Gianluca Vernillo, John Temesi, Matthieu Martin, Guillaume Y Millet
This study investigated the relationships between aerobic characteristics and (i) neuromuscular fatigue induced by 2-min sustained isometric maximal voluntary contractions (MVC) and (ii) subsequent recovery, in the upper and lower limbs. In a pseudo-randomized order, eleven healthy males completed four sessions on different days: maximal incremental cycling test (100 W + 40 W every 2 min); maximal arm-cranking test (50 W + 20 W every 2 min); and 2-min sustained isometric MVCs of the knee extensors (KE) and elbow flexors (EF)...
August 3, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30073917/directional-aiming-bias-in-golf-putting
#17
Jaeho Shim, Hyuk Chung, Jitae Kim
Johnston, Benton, and Nishida (2003, Last but not least - Golfers may have to overcome a persistent visuospatial illusion. Perception, 32(9), 1151-1154) reported that when standing sideways to hit a golf ball, it becomes very difficult to see the veridical line of putt to the target and it creates a bias to misread the direction to the right of target. The purpose of the study was to determine if this perceptual aiming bias also impacts putting. A group of expert (N = 24) and novice (N = 24) players performed a perception task of aligning a line on the golf ball towards the target hole and an action task of putting a ball to the target hole located 1 m and 4 m away...
August 3, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30071185/systems-model-and-individual-simulations-of-training-strategies-in-elite-short-track-speed-skaters
#18
Thibaut Méline, Ludovic Mathieu, Fabio Borrani, Robin Candau, Anthony Mj Sanchez
This study aimed to evaluate the effect of simulated training strategies on performance potential in elite short-track speed skaters. Training load and field-based criterion performances from fifteen athletes (10 males, 5 females) were collected over a 3-month training period and the relationship between training loads and performance was computed with a variable dose-response model using a genetic algorithm. Individual simulations of tapers preceded or not preceded by an overload training (OT) were assessed...
August 2, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30070620/eccentric-flywheel-post-activation-potentiation-influences-swimming-start-performance-kinetics
#19
Francisco Cuenca-Fernández, Gracia López-Contreras, Luis Mourão, Karla de Jesus, Kelly de Jesus, Rodrigo Zacca, J Paulo Vilas-Boas, Ricardo J Fernandes, Raúl Arellano
This study aimed to assess the effects of post-activation potentiation in the strength related variables of a kick start. Thirteen competitive swimmers performed three kick starts after a standardized warm up (denoted USUAL) and another after inducing post-activation through five isotonic repetitions on an eccentric flywheel (denoted PAP). A T-test was used to quantify differences between USUAL and PAP warm up. The best trial of each subject achieved by natural conditions (denoted PEAK) was compared with data obtained after PAP...
August 2, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30067477/the-association-of-major-patterns-of-physical-activity-sedentary-behavior-and-sleeping-with-mortality-in-older-adults
#20
Ana Bayán-Bravo, Raúl F Pérez-Tasigchana, Esther López-García, David Martínez-Gómez, Fernando Rodríguez-Artalejo, Pilar Guallar-Castillón
OBJECTIVE: To identify major patterns of physical activity (PA), sedentary behavior (SB) and sleeping (all self-reported), and their association with long-term mortality. METHODS: Cohort of 2,851 individuals aged ≥ 60 from Spain. Mortality was ascertain from 2003 up to July 2013. Patterns of PA, SB and sleeping were identified by factor analysis. RESULTS: During follow-up, 1,145 deaths occurred. The first pattern, named "sedentary and non-active pattern", was characterized by long sleeping or lying time, and not doing even light PA (household chores or walking)...
August 1, 2018: Journal of Sports Sciences
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