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Journal of Science and Medicine in Sport

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https://www.readbyqxmd.com/read/29325894/reference-values-for-the-creatine-kinase-response-to-professional-australian-football-match-play
#1
Luke A G Inman, Michael J Rennie, Mark L Watsford, Nathan J Gibbs, James Green, Robert W Spurrs
OBJECTIVES: Due to the importance of monitoring markers of muscle damage in high-level sport from a medical and athlete recovery perspective, this study aimed to determine the upper limits of normal (ULN) for post-match plasma creatine kinase (CK) in professional Australian footballers. Raw CK values were considered, along with intra-individual deviations from the season-mean. DESIGN: Case series. METHODS: CK was collected between 36-48h following professional Australian football match-play...
December 30, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29331404/reliability-and-validity-of-the-adapted-resistance-training-skills-battery-for-children
#2
Bonnie J Furzer, Marc D Bebich-Philip, Kemi E Wright, Siobhan L Reid, Ashleigh L Thornton
OBJECTIVES: Resistance training (RT) is emerging as a training modality to improve motor function and facilitate physical activity participation in children across the motor proficiency spectrum. Although RT competency assessments have been established and validated among adolescent cohorts, the extent to which these methods are suitable for assessing children's RT skills is unknown. This project aimed to assess the psychometric properties of the adapted Resistance Training Skills Battery for Children (RTSBc), in children with varying motor proficiency...
December 29, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29295783/associations-between-gross-motor-skills-and-physical-activity-in-australian-toddlers
#3
Sanne L C Veldman, Rachel A Jones, Rute Santos, Eduarda Sousa-Sá, João R Pereira, Zhiguang Zhang, Anthony D Okely
OBJECTIVES: Physical activity can be promoted by high levels of gross motor skills. A systematic review found a positive relationship in children (3-18 years) but only few studies examined this in younger children. The aim of this study was to examine the association between gross motor skills and physical activity in children aged 11-29 months. DESIGN: Cross-sectional study. METHODS: This study involved 284 children from 30 childcare services in NSW, Australia (Mean age=19...
December 20, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29289497/monitoring-loads-and-non-contact-injury-during-the-transition-from-club-to-national-team-prior-to-an-international-football-tournament-a-case-study-of-the-2014-fifa-world-cup-and-2015-asia-cup
#4
Alan McCall, Mark Jones, Les Gelis, Craig Duncan, Fabian Ehrmann, Gregory Dupont, Rob Duffield
OBJECTIVES: Injured and non-injured national team footballers were compared for external and internal loads during transition from club to National team training camp. DESIGN: Prospective Case Study. METHODS: Load and injury data were collected from the same National team prior to and during training camps of 2 tournaments; World (n=17) and Asian Cups (n=16). External (number sessions) and internal (s-RPE) loads were collected 4-weeks prior to and during camps...
December 20, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29289498/the-mental-health-of-elite-athletes-in-the-united-kingdom
#5
R L Foskett, F Longstaff
OBJECTIVES: The purpose of this study was to investigate the prevalence of signs of anxiety/depression and distress among a sample of elite athletes in the United Kingdom (UK). A secondary aim was to identify the variables associated with signs of anxiety/depression and distress in the same sample. DESIGN: A cross-sectional survey was distributed to a sample of elite athletes in the UK. METHODS: A total of 143 elite athletes completed an online survey that consisted of demographic questions, the Greenhaus Scale assessing career satisfaction, the 12-Item General Health Questionnaire assessing signs of anxiety/depression and a distress screener based on the Four-Dimensional Symptom Questionnaire...
December 15, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29289496/long-term-effects-of-sit-stand-workstations-on-workplace-sitting-a-natural-experiment
#6
Wenfei Zhu, Monica Gutierrez, Meynard J Toledo, Sarah Mullane, Anna Park Stella, Randolph Diemar, Kevin F Buman, Matthew P Buman
OBJECTIVE: Sit-stand workstations may result in significant reductions in workplace sitting. However, few studies have examined long-term maintenance under real-world conditions. The purpose of this study was to evaluate workplace sitting time, cardio-metabolic biomarkers, and work productivity during a workplace re-design which included the installation of sit-stand workstations. DESIGN: Natural experiment with appropriately matched comparison. METHODS: Office workers from distinct worksites in the same unit were recruited (Intervention, n=24; Comparison, n=12)...
December 15, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29254676/sport-concussion-assessment-tool-interpreting-day-of-injury-scores-in-professional-ice-hockey-players
#7
Timo Hänninen, Jari Parkkari, Markku Tuominen, Juha Öhman, David R Howell, Grant L Iverson, Teemu M Luoto
OBJECTIVES: To characterize the clinical utility of Sport Concussion Assessment Tool 3 (SCAT3) baseline and normative reference values for the assessment of acute concussion; and to identify the sensitivity of each SCAT3 subcomponent to the acute effects of concussion. DESIGN: Prospective cohort. METHODS: The day-of-concussion SCAT3 results (n=27) of professional male ice hockey players (mean age=27, SD=4) were compared to athlete's individual baseline and to the league's normative reference values...
December 12, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29233466/physiotherapists-use-a-small-number-of-behaviour-change-techniques-when-promoting-physical-activity-a-systematic-review-comparing-experimental-and-observational-studies
#8
REVIEW
Breanne E Kunstler, Jill L Cook, Nicole Freene, Caroline F Finch, Joanne L Kemp, Paul D O'Halloran, James E Gaida
OBJECTIVES: Physiotherapists promote physical activity as part of their practice. This study reviewed the behaviour change techniques physiotherapists use when promoting physical activity in experimental and observational studies. DESIGN: Systematic review of experimental and observational studies. METHODS: Twelve databases were searched using terms related to physiotherapy and physical activity. We included experimental studies evaluating the efficacy of physiotherapist-led physical activity interventions delivered to adults in clinic-based private practice and outpatient settings to individuals with, or at risk of, non-communicable diseases...
December 7, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29233665/eccentric-hamstring-strength-deficit-and-poor-hamstring-to-quadriceps-ratio-are-risk-factors-for-hamstring-strain-injury-in-football-a-prospective-study-of-146-professional-players
#9
Justin W Y Lee, Kam-Ming Mok, Hardaway C K Chan, Patrick S H Yung, Kai-Ming Chan
OBJECTIVES: The purpose of this study was to investigate whether preseason isokinetic strength measures were predictive of future HSI among professional football players. DESIGN: Prospective cohort study, Level of evidence 2. METHODS: A total of 169 professional players participated in a preseason isokinetic strength screening, followed by a 10-month competitive season. Testing protocol included the concentric performance of both knee flexion and extension at 60degs-1 and 240degs-1 and the eccentric performance of the knee flexor at 30degs-1...
December 5, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29233465/physical-demands-and-technical-performance-in-australian-football-league-women-s-aflw-competition-match-play
#10
Anthea C Clarke, Samuel Ryan, Georgia Couvalias, Ben J Dascombe, Aaron J Coutts, Thomas Kempton
OBJECTIVES: To compare positional differences in the physical and technical demands of Australian Football League Women's (AFLW) match-play. A secondary aim was to examine the time course changes in activity profiles during AFLW match-play. DESIGN: Longitudinal observational study. METHODS: Global positioning system data were collected from 26 players (6 positional groups) from the same club during seven AFLW matches. Absolute and relative physical performance data were categorised into total distance, high-speed running (>14...
December 5, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29203319/critical-power-how-different-protocols-and-models-affect-its-determination
#11
Felipe Mattioni Maturana, Federico Y Fontana, Silvia Pogliaghi, Louis Passfield, Juan M Murias
In cycling, critical power (CP) and work above CP (W') can be estimated through linear and nonlinear models. Despite the concept of CP representing the upper boundary of sustainable exercise, overestimations may be made as the models possess inherent limitations and the protocol design is not always appropriate. OBJECTIVES: To measure and compare CP and W' through the exponential (CPexp), 3-parameter hyperbolic (CP3-hyp), 2-parameter hyperbolic (CP2-hyp), linear (CPlinear), and linear 1/time (CP1/time) models, using different combinations of TTE trials of different durations (approximately 1-20min)...
November 29, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29198379/operative-shoulder-instability-injury-management-in-australian-football-league-players-a-case-series
#12
Jason Bonacci, Brent Manson, Steven J Bowe, Stephen Gill, Hugh Seward, Greg Hoy, Richard Page
OBJECTIVES: The purpose of this study was to review the surgical management procedures of shoulder instability injuries in Australian Football League (AFL) players, and determine outcomes regarding return to sport and injury recurrence. DESIGN: Retrospective cohort study. METHODS: Elite AFL players with shoulder instability resulting in surgery were assessed in a retrospective cohort design (72 players/77 shoulders). Type of initial injury, surgical management, return to sport and injury recurrence were obtained...
November 27, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29233667/knee-confidence-in-youth-and-young-adults-at-risk-of-post-traumatic-osteoarthritis-3-10-years-following-intra-articular-knee-injury
#13
A M Ezzat, J L Whittaker, C Toomey, P K Doyle-Baker, M Brussoni, C A Emery
OBJECTIVES: To examine differences in knee confidence between individuals with a history of youth sport-related knee injury and uninjured controls. DESIGN: Historical cohort study. METHODS: Participants include 100 individuals who sustained a youth sport-related intra-articular knee injury 3-10 years previously and 100 age-, sex- and sport-matched uninjured controls. Outcomes included: Knee confidence (Knee Osteoarthritis and Outcome Score); fat mass index (FMI; dual-energy X-ray absorptiometry); and weekly physical activity (modified Godin-Shephard Leisure Time Questionnaire)...
November 26, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29191729/hardness-and-posting-of-foot-orthoses-modify-plantar-contact-area-plantar-pressure-and-perceived-comfort-when-cycling
#14
Jaquelin A Bousie, Peter Blanch, Thomas G McPoil, Bill Vicenzino
OBJECTIVES: To evaluate the effects of hardness and posting of orthoses on plantar profile and perceived comfort and support during cycling. DESIGN: A repeated measures study with randomised order of orthoses, hardness, and posting conditions. METHODS: Twenty-three cyclists cycled at a cadence of 90rpm and a perceived exertion rating of twelve. Contoured soft and hard orthoses with or without a medial forefoot or lateral forefoot post were evaluated...
November 26, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29239783/early-adulthood-determinants-of-mid-life-leisure-time-physical-inactivity-stability-and-change-findings-from-a-prospective-birth-cohort
#15
Snehal M Pinto Pereira, Chris Power
OBJECTIVES: Physical inactivity is highly prevalent. Knowledge is needed of influences on inactive lifestyles. We aimed to establish whether early adult factors predict subsequent inactivity patterns in mid-adulthood. DESIGN: Leisure-time inactivity (activity frequency<1/week) was assessed at 33y and 50y in the 1958 British Birth cohort (N=12,271). METHODS: We assessed associations of early adult (23-33y) physical status, mental function, social, family and neighbourhood circumstances with four 33-50y patterns (never inactive, persistently inactive, deteriorating or improving) using multinomial logistic regression with and without adjustment for childhood factors (e...
November 22, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29239782/the-morphology-of-foot-soft-tissues-is-associated-with-running-shoe-type-in-healthy-recreational-runners
#16
Xianyi Zhang, Tijs Delabastita, Joselien Lissens, Floor De Beenhouwer, Benedicte Vanwanseele
OBJECTIVES: To determine the differences in the morphology of foot soft tissues between runners using different types of running shoes. DESIGN: Cross-sectional study. METHODS: Thirty-eight recreational runners were divided into four groups based on running shoe type, namely, neutral shoes, motion control shoes, minimalistic shoes and neutral shoes with custom-made insoles. An arch height index and a relative arch deformation index were calculated for each participant...
November 22, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29162331/the-effect-of-load-on-achilles-tendon-structure-in-novice-runners
#17
Omar W Heyward, Lucas M Rabello, Lucas van der Woude, Inge van den Akker-Scheek, Alli Gokeler, Henk van der Worp, Johannes Zwerver
OBJECTIVES: To observe the changes in Achilles tendon structure in novice runners, with loading prescriptions of 100% body weight compared to 20% body weight. DESIGN: Randomised crossover. METHODS: Twenty novice runners participated in two separate running bouts spaced 14days apart, one of high load at 100% body weight, and one of low load at 20% body weight. Tendon structure was measured by ultrasonographic tissue characterisation on 6 occasions; immediately prior to each run, 2 and 7days after each run...
November 18, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29157780/growth-hormone-gh-and-prolactin-responses-to-a-non-exercise-stress-test-in-athletes-with-overtraining-syndrome-results-from-the-endocrine-and-metabolic-responses-on-overtraining-syndrome-eros-eros-stress
#18
Flavio A Cadegiani, Claudio E Kater
OBJECTIVES: Overtraining syndrome (OTS) leads to worsened sports performance and fatigue. The pathophysiology of OTS has not been entirely elucidated, and there is a lack of accurate markers for its diagnosis. Changes in hormonal responses implicated in OTS were stimulated by exercise, which has limited their interpretation. Hence, we aimed to evaluate growth hormone (GH) and prolactin responses to a gold-standard and exercise-independent stimulation test, the insulin tolerance test (ITT)...
November 16, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29169925/heat-stress-incidence-and-matchplay-characteristics-in-women-s-grand-slam-tennis
#19
Matthew T Smith, Machar Reid, Stephanie Kovalchik, Tim Wood, Rob Duffield
OBJECTIVES: To explore the relationship of wet bulb globe temperature (WBGT) on heat-related incidents and alterations in matchplay and behavioural characteristics in women's tennis at the Australian Open. DESIGN: From 360 main draw Australian Open women's matches (2014-2016), data describing on-court calls for trainers, doctors, cooling devices and water, post match medical consults and matchplay characteristics were collated. METHODS: Data were referenced against estimated WBGT and categorised into standard zones (zone 5: >32...
November 15, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29233666/emg-amplitude-fatigue-threshold-and-time-to-task-failure-a-meta-analysis
#20
REVIEW
J Matt McCrary, Bronwen J Ackermann, Mark Halaki
OBJECTIVES: Electromyographic (EMG) fatigue threshold (EMGFT) is utilised as a correlate of critical power, torque, and force thresholds that establishes a theoretical exercise intensity-the power, torque, or force at which the rate of change of EMG amplitude (ΔEM¯G) is zero-below which neuromuscular fatigue is negligible and unpredictable. Recent studies demonstrating neuromuscular fatigue below critical thresholds raise questions about the construct validity of EMGFT. The purpose of this analysis is to evaluate the construct validity of EMGFT by aggregating ΔEM¯G and time to task failure (Tlim) data...
November 11, 2017: Journal of Science and Medicine in Sport
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