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Journal of Science and Medicine in Sport

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https://www.readbyqxmd.com/read/28807684/influence-of-velotron-chainring-size-on-wingate-anaerobic-test
#1
Nicolas W Clark, Dale R Wagner, Edward M Heath
OBJECTIVES: This study compared an 85-tooth versus the standard 62-tooth chainring for power outputs during a Wingate test using a Velotron electromagnetically-braked cycle ergometer. DESIGN: All participants completed trials using both chainring sizes in a repeated-measures cross-over design. METHODS: Resistance-trained male participants (n=20, 24.6±4.5years) performed two Wingate tests separated by at least 48h. Peak power (PP), mean power (MP), fatigue index (FI), peak cadence, mean cadence, and total work (TW) were recorded...
August 2, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28803796/shoulder-muscle-activation-patterns-and-levels-differ-between-open-and-closed-chain-abduction
#2
Darren Reed, Ian Cathers, Mark Halaki, Karen A Ginn
OBJECTIVES: Open and closed-chain abduction of the shoulder are commonly used in rehabilitation and exercise programs to assess and/or improve shoulder muscle function. However, it is not known if shoulder muscle activation patterns differ between these two exercises. Therefore the purpose of this study was to compare muscle activation patterns during closed-chain shoulder abduction performed using a shoulder press machine with open-chain abduction using free weights. DESIGN: Experimental study...
August 2, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28803797/m-wave-normalization-of-emg-signal-to-investigate-heat-stress-and-fatigue
#3
Olivier Girard, David J Bishop, Sébastien Racinais
OBJECTIVES: We examined the extent to which peripheral changes affect EMG signal adjustments during repeated sprinting in temperate and hot conditions. DESIGN: Randomised, crossover study. METHODS: Ten males performed 10×6-s 'all-out' cycling sprints (recovery=30s) in either a temperate (24°C/30%rH) or a hot (35°C/40%rH) environment with concomitant surface EMG recordings of the vastus lateralis (VL) and rectus femoris (RF). In addition, peak-to-peak M-wave amplitudes were obtained for each muscle after each sprint (i...
July 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28797831/validity-of-the-actigraph-gt3x-and-bodymedia-sensewear-armband-to-estimate-energy-expenditure-during-physical-activity-and-sport
#4
Paul B Gastin, Cassy Cayzer, Dan Dwyer, Sam Robertson
OBJECTIVES: The purpose of this study was to assess the validity of the ActiGraph GT3X+ (GT3X+) and the BodyMedia SenseWear Armband (SWA) to estimate energy expenditure (EE) during physical activity and field sport movements. DESIGN: Criterion validity. METHODS: Twenty-six active adults completed a single 90min session involving alternating intervals of exercise (5min) and recovery (10min). Exercise involved walking (4km/h), jogging (8km/h), running (12km/h) or a sport-simulated circuit (three intervals)...
July 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28802628/physical-activity-domains-and-cognitive-function-over-three-years-in-older-adults-with-subjective-memory-complaints-secondary-analysis-from-the-mapt-trial
#5
Philipe de Souto Barreto, Sandrine Andrieu, Yves Rolland, Bruno Vellas
OBJECTIVES: We aimed to examine the associations of physical activity (PA) domains (i.e., PA in leisure-time (LTPA), for housework (HPA), or for gardening (GPA)) with cognitive function in older adults with subjective memory complaints (no-dementia) and to investigate if those associations were dependent on the status of apolipoprotein E allele 4 (APOE4), omega-3 levels and mild cognitive impairment (MCI). DESIGN: Observational prospective secondary analysis using longitudinal data from a randomized controlled trial...
July 26, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28780197/clinical-and-radiological-predictors-for-persistent-complaints-five-years-after-a-lateral-ankle-sprain-a-long-term-follow-up-study-in-primary-care
#6
Adinda K E Mailuhu, Edwin H G Oei, Nienke van Putte-Katier, John M van Ochten, Patrick J E Bindels, Sita M A Bierma-Zeinstra, Marienke van Middelkoop
OBJECTIVES: To examine the five-year prognosis and potential prognostic factors of patients with an acute lateral ankle sprain in primary care setting. DESIGN: Observational study. METHODS: 206 patients who participated in a cross-sectional study and visited their general practitioner with an acute lateral ankle sprain 6-12 months prior to inclusion were approached for a 5-year follow-up measurement consisting of an online questionnaire. At baseline patients completed standardized questionnaires, underwent a standardized physical examination and radiological examination (radiography and Magnetic Resonance Imaging) and scored their perceived recovery...
July 23, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28778827/standardising-muscle-strength-measurement-protocols-in-femoroacetabular-impingement-re-kierkegaard-s-mechlenburg-i-lund-b-s%C3%A3-balle-k-dalgas-u-2017-impaired-hip-muscle-strength-in-patients-with-femoroacetabular-impingement-syndrome-journal-of-science-and-medicine
#7
LETTER
https://www.readbyqxmd.com/read/28778825/the-association-between-harm-avoidance-personality-traits-and-self-reported-concussion-history-in-south-african-rugby-union-players
#8
Sarah Mc Fie, Shameemah Abrahams, Jon Patricios, Jason Suter, Michael Posthumus, Alison V September
OBJECTIVES: Personality traits have been proposed to affect the risk of sports concussion, but evidence is limited. Cloninger's Tridimensional Personality Questionnaire (TPQ) measures novelty seeking, harm avoidance (HA), and reward dependence traits. The aim of this study was to investigate the relationship between TPQ scores and concussion history in rugby union players. DESIGN: Cross-sectional study. METHODS: Rugby players from high schools, senior amateur clubs, and professional teams provided a self-reported concussion history and completed the TPQ...
July 20, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28760693/the-effect-of-rigid-taping-with-tension-on-mechanical-displacement-of-the-skin-and-change-in-pain-perception
#9
Shu-Mei Chen, Sing Kai Lo, Jill Cook
OBJECTIVES: To investigate the effect of rigid taping that induces mechanical displacement of the skin on pain perception. DESIGN: Single group experiment design with repeated measures. METHODS: Twenty-three active healthy volunteers (12 men and 11 women) participated in the study. All participants received three different taping procedures: no tape, taping with tension, and taping without tension. The order of three taping conditions was randomised...
July 14, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28760692/assessment-and-monitoring-practices-of-australian-fitness-professionals
#10
Jason A Bennie, Glen H Wiesner, Jannique G Z van Uffelen, Jack T Harvey, Melinda J Craike, Stuart J H Biddle
OBJECTIVES: Assessment and monitoring of client health and fitness is a key part of fitness professionals' practices. However, little is known about prevalence of this practice. This study describes the assessment/monitoring practices of a large sample of Australian fitness professionals. DESIGN: Cross-sectional. METHODS: In 2014, 1206 fitness professionals completed an online survey. Respondents reported their frequency (4 point-scale: [1] 'never' to [4] 'always') of assessment/monitoring of eight health and fitness constructs (e...
July 14, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28757381/using-the-capture-recapture-method-to-estimate-the-incidence-of-musculoskeletal-injuries-among-u-s-army-soldiers
#11
Mita Lovalekar, Karen A Keenan, Yue-Fang Chang, Michael D Wirt, Bradley C Nindl, Kim Beals, Takashi Nagai
Musculoskeletal injury (MSI) data typically are obtained from medical chart-review (MCR) or injury self-reports (ISR). MSI incidence may be under-counted if only one source is utilized, as MCR will not capture MSI for which medical care was not sought, and ISR may be affected by issues with recall. OBJECTIVES: The purposes of this study were to determine MSI incidence from two sources (MCR, ISR) and to estimate the incidence, after accounting for the under-counting in both sources, among a sample of U...
July 14, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28757380/high-acute-chronic-workloads-are-associated-with-injury-in-england-wales-cricket-board-development-programme-fast-bowlers
#12
A Warren, S Williams, S McCaig, G Trewartha
OBJECTIVES: The objectives of this study were to explore the relationship between acute (1 week) and chronic (4-week average) bowling workloads and injury risk in National Development Programme fast bowlers, and to investigate individual differences in the relationship between acute:chronic workloads and injury. DESIGN: Prospective cohort study. METHODS: Bowling workloads and injury data were collected prospectively for 29 male fast bowlers (age range 15-18) on a National Programme over two years...
July 14, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28756178/cricket-spin-bowling-remains-in-its-biomechanical-infancy
#13
LETTER
Simon A Feros, Wayne Spratford, Nicholas Platt, Dara M Twomey
No abstract text is available yet for this article.
July 14, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28754606/prolonged-running-increases-knee-moments-in-sidestepping-and-cutting-manoeuvres-in-sport
#14
Robert J Savage, Brendan S Lay, Jodie A Wills, David G Lloyd, Tim L A Doyle
OBJECTIVES: To investigate how knee kinematics, kinetics and loading changes during sidestepping tasks following a prolonged running protocol performed in a laboratory setting. DESIGN: All participants performed sidestepping, and crossover cutting tasks in a randomised order before and after a 60min running protocol on a non-motorised treadmill that simulated an AF game. METHODS: Eight healthy male participants who partook in semi-professional and amateur Australian Football undertook a series of straight line runs, sidestepping (SS), and crossover cutting (XO) tasks before and after a simulated game of Australian football...
July 14, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28797830/reduced-severity-of-lumbo-pelvic-hip-injuries-in-professional-rugby-union-players-following-tailored-preventative-programmes
#15
Kate L Evans, Jonathan Hughes, Morgan D Williams
OBJECTIVES: The aim of this study was to tailor lumbo-pelvic-hip (LPH) injury reduction programmes in professional rugby union players based on screening data and examine its effectiveness. DESIGN: Prospective case controlled study. METHODS: Twenty-eight professional rugby union players were screened pre- and immediately post- the YO-YO intermittent recovery level 1 test using six hip and groin strength tests (adductor squeeze at 0°, 60° and 90°, prone hip extension, abductor, adductor hand held dynamometry)...
July 12, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28778824/the-relationship-between-physical-activity-and-physical-performance-and-psycho-cognitive-functioning-in-older-adults-living-in-residential-aged-care-facilities
#16
Natalia J M Bootsman, Tina L Skinner, Ravin Lal, Delma Glindemann, Carmela Lagasca, G M E E Geeske Peeters
OBJECTIVES: Insight into modifiable factors related to falls risk in older adults living in residential aged care facilities (RACFs) is necessary to tailor preventive strategies for this high-risk population. Associations between physical activity (PA), physical performance and psycho-cognitive functioning have been understudied in aged care residents. This study investigated associations between PA, and both physical performance and psycho-cognitive functioning in older adults living in RACFs...
July 12, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28754605/train-hard-sleep-well-perceived-training-load-sleep-quantity-and-sleep-stage-distribution-in-elite-level-athletes
#17
Melanie Knufinke, Arne Nieuwenhuys, Sabine A E Geurts, Els I S Møst, Kamiel Maase, Maarten H Moen, Anton M L Coenen, Michiel A J Kompier
OBJECTIVES: Sleep is essential for recovery and performance in elite athletes. While it is generally assumed that exercise benefits sleep, high training load may jeopardize sleep and hence limit adequate recovery. To examine this, the current study assessed objective sleep quantity and sleep stage distributions in elite athletes and calculated their association with perceived training load. DESIGN: Mixed-methods. METHODS: Perceived training load, actigraphy and one-channel EEG recordings were collected among 98 elite athletes during 7 consecutive days of regular training...
July 12, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28751075/effects-of-physical-activity-and-breaks-on-mathematics-engagement-in-adolescents
#18
Katherine B Owen, Philip D Parker, Thomas Astell-Burt, Chris Lonsdale
OBJECTIVES: The purpose of this study was to determine whether physical activity has a positive relationship with school engagement regardless of the presence or absence of a recess or lunch break before the classroom lesson. DESIGN: Data were collected over three ten-week periods: January-April 2014 (Time 1), October-December 2014 (Time 2), and April-June 2015 (Time 3). METHODS: A cohort of 2194 adolescents (mean age=13.40years, SD=.73) wore an accelerometer during the hour before a mathematics lesson and completed a questionnaire following the mathematics lesson to assess school engagement in that lesson...
July 12, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28778826/less-efficient-oculomotor-performance-is-associated-with-increased-incidence-of-head-impacts-in-high-school-ice-hockey
#19
Adam W Kiefer, Christopher DiCesare, Patrick Nalepka, Kim Barber Foss, Staci Thomas, Gregory D Myer
OBJECTIVES: To evaluate associations between pre-season oculomotor performance on visual tracking tasks and in-season head impact incidence during high school boys ice hockey. DESIGN: Prospective observational study design. METHODS: Fifteen healthy high school aged male hockey athletes (M=16.50±1.17years) performed two 30s blocks each of a prosaccade and self-paced saccade task, and two trials each of a slow, medium, and fast smooth pursuit task (90°s(-1); 180°s(-1); 360°s(-1)) during the pre-season...
July 8, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28728887/effectiveness-of-exercise-intervention-on-improving-fundamental-movement-skills-and-motor-coordination-in-overweight-obese-children-and-adolescents-a-systematic-review
#20
REVIEW
Ahreum Han, Allan Fu, Stephen Cobley, Ross H Sanders
OBJECTIVES: Childhood obesity is negatively associated with fundamental movement skill and motor coordination, which in turn constrains physical activity participation and adherence thereby forming a 'vicious cycle'. However, developing motor skill and coordination in childhood could help to break the vicious cycle to reduce childhood obesity. The objective of this systematic review was to determine the effectiveness of exercise and physical activity interventions on improving fundamental movement skill and motor coordination in overweight/obese children and adolescents...
July 8, 2017: Journal of Science and Medicine in Sport
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