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Journal of Science and Medicine in Sport

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https://www.readbyqxmd.com/read/28522227/promoting-motor-skills-in-low-income-ethnic-children-the-physical-activity-in-linguistically-diverse-communities-paldc-nonrandomized-trial
#1
Anthony D Okely, Louise L Hardy, Marijka Batterham, Phillip Pearson, Kim McKeen, Lauren Puglisi
OBJECTIVES: This study reports the long-term effects of a professional learning program for classroom teachers on fundamental motor skill (FMS) proficiency of primary school students from ethnically diverse backgrounds. DESIGN: A cluster non-randomized trial using a nested cross-sectional design. METHODS: The study was conducted in 8 primary schools located in disadvantaged and culturally diverse areas in Sydney, Australia. The intervention used an action learning framework, with each school developing and implementing an action plan for enhancing the teaching of FMS in their school...
May 8, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28506451/motor-skill-development-in-low-income-at-risk-preschoolers-a-community-based-longitudinal-intervention-study
#2
Laura L Bellows, Patricia L Davies, Jimikaye B Courtney, William J Gavin, Susan L Johnson, Richard E Boles
OBJECTIVES: This study aimed to: (1) determine the status of fundamental movement skill (FMS) performance in low-income, at-risk preschoolers; and (2) evaluate the impact of the Food Friends Get Movin' with Mighty Moves (MM) program on improving children's FMS at two-year follow-up. DESIGN: Longitudinal, quasi-experimental study with matched controls. METHODS: The Colorado LEAP study was conducted in four Head Start/preschools (two intervention, two control) serving children aged 3-5 years...
April 26, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28526225/the-acute-response-to-interval-and-continuous-exercise-in-adults-with-confirmed-airway-hyper-responsiveness
#3
Carley O'Neill, Kirsten Burgomaster, Otto Sanchez, Shilpa Dogra
OBJECTIVES: To determine changes in lung function following an acute bout of high intensity interval exercise (HIIE), moderate intensity interval exercise (MIIE), and moderate intensity continuous exercise (MICE) in adults with airway hyper-responsiveness (AHR). DESIGN: A randomized cross-over design was used. METHODS: Participants completed five laboratory sessions: (1) eucapnic voluntary hyperpnea challenge (2) maximal exercise test to determine peak power output (PPO) and, (3-5) HIIE (90% PPO for 1min followed by 10% PPO for 1min, repeated 10 times), MIIE (65% PPO for 1min followed by 10% PPO for 1min, repeated 10 times) and MICE (65% PPO for 20min)...
April 25, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28495201/self-reported-balance-status-is-not-a-reliable-indicator-of-balance-performance-in-adolescents-at-one-month-post-concussion
#4
Coralie Rochefort, Coren Walters-Stewart, Mary Aglipay, Nick Barrowman, Roger Zemek, Heidi Sveistrup
OBJECTIVES: To determine if self-reported balance symptoms can be used as a proxy for measures of the center of pressure (COP) to identify balance deficits in a group of concussed adolescents. DESIGN: Case-control. METHODS: Thirteen adolescents 1-month post-concussion who reported ongoing balance problems (Balance+), 20 adolescent 1-month post-concussion who reported no balance problems (Balance-), and 30 non-injured adolescents (control) completed a series of balance tests...
April 22, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28526226/experimental-pain-in-the-groin-may-refer-into-the-lower-abdomen-implications-to-clinical-assessments
#5
M K Drew, T S Palsson, R P Hirata, M Izumi, G Lovell, M Welvaert, P Chiarelli, P G Osmotherly, T Graven-Nielsen
OBJECTIVES: To investigate the effects of experimental adductor pain on the pain referral pattern, mechanical sensitivity and muscle activity during common clinical tests. DESIGN: Repeated-measures design. METHODS: In two separate sessions, 15 healthy males received a hypertonic (painful) and isotonic (control) saline injection to either the adductor longus (AL) tendon to produce experimental groin pain or into the rectus femoris (RF) tendon as a painful control...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28501418/comparability-and-feasibility-of-wrist-and-hip-worn-accelerometers-in-free-living-adolescents
#6
Joseph J Scott, Alex V Rowlands, Dylan P Cliff, Philip J Morgan, Ronald C Plotnikoff, David R Lubans
OBJECTIVE: To determine the comparability and feasibility of wrist- and hip-worn accelerometers among free-living adolescents. DESIGN: 89 adolescents (age=13-14years old) from eight secondary schools in New South Wales (NSW), Australia wore wrist-worn GENEActiv and hip-worn ActiGraph (GT3X+) accelerometers simultaneously for seven days and completed an accelerometry behavior questionnaire. METHODS: Bivariate correlations between the wrist- and hip-worn out-put were used to determine concurrent validity...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28487140/feasibility-and-efficacy-of-the-great-leaders-active-students-glass-program-on-children-s-physical-activity-and-object-control-skill-competency-a-non-randomised-trial
#7
Nicole Nathan, Rachel Sutherland, Mark R Beauchamp, Kristen Cohen, Ryan M Hulteen, Mark Babic, Luke Wolfenden, David R Lubans
OBJECTIVES: This study aimed to assess the feasibility and efficacy of the Great Leaders Active StudentS (GLASS) program, a school-based peer-led physical activity and object control skill intervention. DESIGN: The study employed a quasi-experimental design. METHODS: The study was conducted in two elementary schools, one intervention and one comparison, in Newcastle, New South Wales (NSW), Australia from April to June 2015 (N=224 students)...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483561/cardiorespiratory-fitness-waist-circumference-and-liver-enzyme-levels-in-european-adolescents-the-helena-cross-sectional-study
#8
María Medrano, Idoia Labayen, Jonatan R Ruiz, Gerardo Rodríguez, Christina Breidenassel, Manuel Castillo, Raquel Pedrero, Kurt Widhalm, Anthony Kafatos, Yannis Manios, Dénés Molnar, Marcela González-Gross, Francisco B Ortega, Luis A Moreno
OBJECTIVES: (1) To examine whether cardiorespiratory fitness (CRF) is related to liver enzyme levels independent of waist circumference (WC), and (2) To test whether having a high CRF is associated with an improved liver enzyme profile with a high WC. DESIGN: Cross-sectional. METHODS: CRF (20m-shuttle-run test) and WC were assessed in 811 European adolescents (48.5% males) aged 12.5-17.5 years. Fatty liver biomarkers included fasting serum alanine-aminotransferase (ALT), gamma-glutamyl-transpeptidase (GGT) and the aspartate-aminotransferase to ALT (AST/ALT) ratio...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483560/the-influence-of-a-12-carbohydrate-electrolyte-beverage-on-self-paced-soccer-specific-exercise-performance
#9
Liam D Harper, Emma J Stevenson, Ian Rollo, Mark Russell
OBJECTIVES: To assess the physiological and performance effects of a 12% carbohydrate-electrolyte beverage consumed at practically applicable time-points (i.e., before each half) throughout simulated soccer match-play. DESIGN: Randomised, counterbalanced, crossover. METHODS: Fed players (n=15) performed 90-min of soccer-specific exercise (including self-paced exercise at the end of each half). Players consumed carbohydrate-electrolyte (CHO; 60g×500ml(-1), Na(+) 205mg×500ml(-1)), placebo-electrolyte (PL) or water (Wat) beverages at the end of the warm-up (250ml) and half-time (250ml plus ad-libitum water)...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483559/effect-of-taping-on-multi-segmental-foot-kinematic-patterns-during-walking-in-persons-with-chronic-ankle-instability
#10
Bart Dingenen, Kevin Deschamps, Frauke Delchambre, Evelien Van Peer, Filip F Staes, Giovanni A Matricali
OBJECTIVES: To evaluate multi-segmental foot kinematic patterns in chronic ankle instability (CAI) participants during walking, and to investigate the influence of high-Dye and low-Dye taping on these kinematic patterns. DESIGN: Cross-sectional study. METHODS: Kinematic data of 12 non-injured controls and 15 CAI participants were measured with a three-dimensional motion analysis system during barefoot walking. In addition, the CAI participants walked with high-Dye and low-Dye taping...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483558/evaluation-of-the-activpal-accelerometer-for-physical-activity-and-energy-expenditure-estimation-in-a-semi-structured-setting
#11
Alexander H K Montoye, James M Pivarnik, Lanay M Mudd, Subir Biswas, Karin A Pfeiffer
OBJECTIVES: Evaluate accuracy of the activPAL and its proprietary software for prediction of time spent in physical activity (PA) intensities (sedentary, light, and moderate-to-vigorous) and energy expenditure (EE) and compare its accuracy to that of a machine learning model (ANN) developed from raw activPAL data. DESIGN: Semi-structured accelerometer validation in a laboratory setting. METHODS: Participants (n=41 [20 male]; age=22.0±4.2) completed a 90-min protocol performing 13 activities for 3-10min each and choosing activity order, duration, and intensity...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483557/six-week-transition-to-minimalist-shoes-improves-running-economy-and-time-trial-performance
#12
Joel T Fuller, Dominic Thewlis, Margarita D Tsiros, Nicholas A T Brown, Jonathan D Buckley
OBJECTIVES: This study investigated if gradually introducing runners to minimalist shoes during training improved running economy and time-trial performance compared to training in conventional shoes. Changes in stride rate, stride length, footfall pattern and ankle plantar-flexor strength were also investigated. DESIGN: Randomised parallel intervention trial. METHODS: 61 trained runners gradually increased the amount of running performed in either minimalist (n=31) or conventional (n=30) shoes during a six-week standardised training program...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483556/identifying-the-physical-and-anthropometric-qualities-explanatory-of-paddling-adolescents
#13
Wade H Sinclair, Anthony S Leicht, Troy W Eady, Nick J Marshall, Carl T Woods
OBJECTIVES: This study aimed to identify the physical and/or anthropometric qualities explanatory of adolescent surf lifesavers participating in paddling activities. DESIGN: Cross-sectional observational study. METHODS: A total of 53 (14-18years) male participants were recruited and classified into two groups; paddlers (n=30; actively participating in paddling), non-paddlers (n=23; not actively participating in paddling). All participants completed a testing battery that consisted of 16 physical (isometric strength and muscular endurance) and anthropometric (height, mass, segment lengths and breadths) assessments...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28483555/blood-flow-restriction-walking-and-physical-function-in-older-adults-a-randomized-control-trial
#14
Matthew John Clarkson, Louise Conway, Stuart Anthony Warmington
OBJECTIVES: The progressive age-related declines in muscle health and physical function in older adults are related to muscle size and strength. Walking with an applied blood flow restriction is an alternative to maintain muscle volume in older adults to increase the value for time spent walking. Therefore, the aim of this study was to examine the effect of adding blood flow restriction to low-intensity walking on clinical measures of physical function. DESIGN/METHODS: Sedentary older men and women were randomised to either a low-intensity blood flow restriction walking group (BFRW; n=10), or a non-blood flow restriction walking control group (CON; n=9)...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28479281/explaining-match-outcome-and-ladder-position-in-the-national-rugby-league-using-team-performance-indicators
#15
Carl T Woods, Wade Sinclair, Sam Robertson
OBJECTIVES: To examine the extent at which match outcome and ladder position could be explained using team performance indicators in the National Rugby League (NRL). METHODS: The dataset consisted of 13 performance indicators acquired from each NRL team across the 2016 season (n=376 observations). Data was sorted according to apriori match outcome (win/loss) and ladder position (one to 16). Given the binary and categorical nature of the response variables, two analysis approaches were used; a conditional interference classification tree and ordinal regression...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28476439/misunderstandings-of-concussion-within-a-youth-rugby-population
#16
Philip E Kearney, James See
OBJECTIVES: The recognition and management of concussion has become a major health concern within rugby union. Identifying misconceptions and attitudes regarding concussion is valuable for informing player education. Therefore, the purpose of this study was to explore the knowledge of, and attitudes towards, concussion in subgroups of youth rugby players. DESIGN: Cross-sectional survey. METHODS: Information sheets and consent forms were distributed at training sessions for multiple teams at each of three schools and three clubs...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28446388/medial-shoe-ground-pressure-and-specific-running-injuries-a-1-year-prospective-cohort-study
#17
René B K Brund, Sten Rasmussen, Rasmus O Nielsen, Uwe G Kersting, Uffe Laessoe, Michael Voigt
OBJECTIVES: Achilles tendinitis, plantar fasciopathy and medial tibial stress syndrome injuries (APM-injuries) account for approximately 25% of the total number of running injuries amongst recreational runners. Reports on the association between static foot pronation and APM-injuries are contradictory. Possibly, dynamic measures of pronation may display a stronger relationship with the risk of APM-injuries. Therefore, the purpose of the present study was to investigate if running distance until the first APM-injury was dependent on the foot balance during stance phase in recreational male runners...
April 15, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28442275/wellbeing-perception-and-the-impact-on-external-training-output-among-elite-soccer-players
#18
Shane Malone, Adam Owen, Matt Newton, Bruno Mendes, Leo Tiernan, Brian Hughes, Kieran Collins
OBJECTIVES: The objective of the investigation was to observe the impact of player wellbeing on the training output of elite soccer players. DESIGN: Prospective cohort design. METHODS: Forty-eight soccer players (age: 25.3±3.1years; height: 183±7cm; mass: 72±7kg) were involved in this single season observational study across two teams. Each morning, pre-training, players completed customised perceived wellbeing questionnaires. Global positioning technology devices were used to measure external load (total distance, total high-speed running distance, high speed running, player load, player load slow, maximal velocity, maximal velocity exposures)...
April 13, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28420550/effect-of-a-moderate-caffeine-dose-on-endurance-cycle-performance-and-thermoregulation-during-prolonged-exercise-in-the-heat
#19
Ross E Beaumont, Lewis J James
OBJECTIVES: This study investigated the influence of a moderate caffeine dose on endurance cycle performance and thermoregulation during prolonged exercise in high ambient temperature. DESIGN: Double-blind cross-over study. METHODS: Eight healthy, recreationally active males (mean±SD; age: 22±1 years; body mass: 71.1±8.5kg; VO2peak: 55.9±5.8mLkg(-1)min(-1); Wmax: 318±37W) completed one VO2peak test, one familiarisation trial and two experimental trials...
March 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28416155/tracking-of-muscular-strength-and-power-from-youth-to-young-adulthood-longitudinal-findings-from-the-childhood-determinants-of-adult-health-study
#20
Brooklyn J Fraser, Michael D Schmidt, Quan L Huynh, Terence Dwyer, Alison J Venn, Costan G Magnussen
OBJECTIVES: Low muscular fitness levels have previously been reported as an independent risk factor for chronic disease outcomes. Muscular fitness tracking, the ability to maintain levels measured at one point in time to another point in time, was assessed from youth to adulthood to provide insight into whether early identification of low muscular fitness in youth is possible. DESIGN: Prospective longitudinal study. METHODS: Study including 623 participants who had muscular fitness measures in 1985 (aged 9, 12 or 15 years) and again 20 years later in young adulthood...
March 31, 2017: Journal of Science and Medicine in Sport
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