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Journal of Science and Medicine in Sport

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https://www.readbyqxmd.com/read/27988093/the-strengthen-your-ankle-program-to-prevent-recurrent-injuries-a-randomized-controlled-trial-aimed-at-long-term-effectiveness
#1
M Van Reijen, I Vriend, V Zuidema, W van Mechelen, E A Verhagen
OBJECTIVES: Recurrent ankle sprains can be reduced by a neuromuscular training program (NMT). The way NMT is delivered may influence the incidence of long term recurrent injuries, residual pain and disability. DESIGN: This RCT with a follow-up of twelve months, evaluated whether the implementation method of a proven effective NMT program delivered by a mobile application or a written instruction booklet, resulted in differences in injury incidence rates, functional ankle disability/pain in the long term, assuming equal compliance - as is shown in previous research - with the 8-week intervention...
December 9, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28108266/validity-of-clinical-outcome-measures-to-evaluate-ankle-range-of-motion-during-the-weight-bearing-lunge-test
#2
Emily A Hall, Carrie L Docherty
OBJECTIVES: To determine the concurrent validity of standard clinical outcome measures compared to laboratory outcome measure while performing the weight-bearing lunge test (WBLT). DESIGN: Cross-sectional study. METHODS: Fifty participants performed the WBLT to determine dorsiflexion ROM using four different measurement techniques: dorsiflexion angle with digital inclinometer at 15cm distal to the tibial tuberosity (°), dorsiflexion angle with inclinometer at tibial tuberosity (°), maximum lunge distance (cm), and dorsiflexion angle using a 2D motion capture system (°)...
November 23, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27908560/physical-activity-and-sedentary-time-in-relation-to-academic-achievement-in-children
#3
Eero A Haapala, Juuso Väistö, Niina Lintu, Kate Westgate, Ulf Ekelund, Anna-Maija Poikkeus, Soren Brage, Timo A Lakka
OBJECTIVES: To investigate the independent and combined associations of objectively measured moderate-to-vigorous physical activity (MVPA) and sedentary time (ST) with reading and arithmetic skills. DESIGN: Cross-sectional/prospective. METHODS: Participants were 89 boys and 69 girls aged 6-8 years. MVPA and ST were measured using a combined heart rate and movement sensor and body fat percentage by dual-energy X-ray absorptiometry in Grade 1...
November 23, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27899276/a-comparison-of-the-physical-and-anthropometric-qualities-explanatory-of-talent-in-the-elite-junior-australian-football-development-pathway
#4
Carl T Woods, Ashley Cripps, Luke Hopper, Christopher Joyce
OBJECTIVES: To compare the physical and anthropometric qualities explanatory of talent at two developmental levels in junior Australian football (AF). DESIGN: Cross-sectional observational. METHODS: From a total of 134 juniors, two developmental levels were categorised; U16 (n=50; 15.6±0.3 y), U18 (n=84; 17.4±0.5 y). Within these levels, two groups were a priori defined; talent identified (U16; n=25; 15.7±0.2 y; U18 n=42; 17.5±0.4 y), non-talent identified (U16; n=25; 15...
November 23, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27890479/heart-rate-variability-and-psychometric-responses-to-overload-and-tapering-in-collegiate-sprint-swimmers
#5
Andrew A Flatt, Bjoern Hornikel, Michael R Esco
OBJECTIVES: The purpose of this study was to evaluate cardiac-parasympathetic and psychometric responses to competition preparation in collegiate sprint-swimmers. Additionally, we aimed to determine the relationship between average vagal activity and its daily fluctuation during each training phase. DESIGN: Observational. METHODS: Ten Division-1 collegiate sprint-swimmers performed heart rate variability recordings (i.e., log transformed root mean square of successive RR intervals, lnRMSSD) and completed a brief wellness questionnaire with a smartphone application daily after waking...
November 17, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27889273/is-subscapularis-recruited-in-a-similar-manner-during-shoulder-internal-rotation-exercises-and-belly-press-and-lift-off-tests
#6
Karen A Ginn, Darren Reed, Chelsea Jones, Anthony Downes, Ian Cathers, Mark Halaki
OBJECTIVES: Although the belly press and lift off tests are recommended to assess subscapularis function, shoulder internal rotation (IR) exercises performed in other shoulder positions are more commonly used to restore subscapularis function. It is not known if shoulder IR exercises specifically activate subscapularis to the same degree as the lift off and belly press tests, and thus have the potential to effect subscapularis strength gains. Therefore, the aim was to compare subscapularis activation levels with those of other shoulder internal rotator muscles during the belly press and lift off tests and shoulder IR exercise positions...
November 17, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27889272/can-muscle-coordination-explain-the-advantage-of-using-the-standing-position-during-intense-cycling
#7
Nicolas A Turpin, Antony Costes, Pierre Moretto, Bruno Watier
OBJECTIVES: When compared to seated, the standing position allows the production of higher power outputs during intense cycling. We hypothesized that muscle coordination could explain this advantage. To test this hypothesis, we assessed muscle activity over a wide range of power outputs for both seated and standing cycling positions. DESIGN: Nine lower limb muscle activities from seventeen untrained volunteers were recorded during cycling sequences performed in the seated and the standing positions at power outputs ranging from ∼100 to 700W at 90±5 revolutions-per-minute (RPM)...
November 17, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27887786/validity-and-reliability-of-fitbit-activity-monitors-compared-to-actigraph-gt3x-with-female-adults-in-a-free-living-environment
#8
Ryan E R Reid, Jessica A Insogna, Tamara E Carver, Andrea M Comptour, Nicole A Bewski, Cristina Sciortino, Ross E Andersen
OBJECTIVES: Inexpensive activity monitors have recently gained popularity with the general public. Researchers have evaluated these consumer-based monitors in laboratory-conditions. Given the current wide-spread consumer use of these devices, it is important to ensure users are attaining accurate information compared to previously validated measures. This study investigates the accuracy of Fitbit One and Flex activity monitors in measuring steps, sedentary time, and time spent in light, moderate, and vigorous intensity activities with ActiGraph GT3X+ with female adults in free-living conditions...
November 16, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27876459/local-and-widespread-hyperalgesia-in-female-runners-with-patellofemoral-pain-are-influenced-by-running-volume
#9
Marcella Ferraz Pazzinatto, Danilo de Oliveira Silva, Juliana Pradela, Maira Bergamaschi Coura, Christian Barton, Fábio Mícolis de Azevedo
OBJECTIVES: To compare pressure pain threshold (PPT) around the knee (local hyperalgesia) and at a site remote to the knee (widespread hyperalgesia) between female runners with and without patellofemoral pain (PFP); and to evaluate the relationship between running volume, self-reported knee function and PPT measures. DESIGN: Cross-sectional study. METHODS: Twenty female runners with PFP and twenty pain-free female runners participated in the study...
November 11, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27876280/validity-and-intra-rater-reliability-of-myjump-app-on-iphone-6s-in-jump-performance
#10
Robert Stanton, Sally-Anne Wintour, Crystal O Kean
OBJECTIVES: Smartphone applications are increasingly used by researchers, coaches, athletes and clinicians. The aim of this study was to examine the concurrent validity and intra-rater reliability of the smartphone-based application, MyJump, against laboratory-based force plate measurements. DESIGN: Cross sectional study. METHODS: Participants completed counter-movement jumps (CMJ) (n=29) and 30cm drop jumps (DJ) (n=27) on a force plate which were simultaneously recorded using MyJump...
November 11, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27856198/the-acute-chonic-workload-ratio-in-relation-to-injury-risk-in-professional-soccer
#11
Shane Malone, Adam Owen, Matt Newton, Bruno Mendes, Kieran D Collins, Tim J Gabbett
OBJECTIVES: To examine the association between combined sRPE measures and injury risk in elite professional soccer. DESIGN: Observational cohort study. METHODS: Forty-eight professional soccer players (mean±SD age of 25.3±3.1 yr) from two elite European teams were involved within a one season study. Players completed a test of intermittent-aerobic capacity (Yo-YoIR1) to assess player's injury risk in relation to intermittent aerobic capacity...
November 9, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27840033/exercise-and-sports-science-australia-essa-position-statement-on-exercise-prescription-for-the-prevention-and-management-of-osteoporosis
#12
REVIEW
Belinda R Beck, Robin M Daly, Maria A Fiatarone Singh, Dennis R Taaffe
OBJECTIVES: Osteoporotic fractures are associated with substantial morbidity and mortality. Although exercise has long been recommended for the prevention and management of osteoporosis, existing guidelines are often non-specific and do not account for individual differences in bone health, fracture risk and functional capacity. The aim of the current position statement is to provide health practitioners with specific, evidence-based guidelines for safe and effective exercise prescription for the prevention or management of osteoporosis, accommodating a range of potential comorbidities...
October 31, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28089102/comparison-of-corticosteroid-autologous-blood-or-sclerosant-injections-for-chronic-tennis-elbow
#13
R Branson, K Naidu, C du Toit, A H Rotstein, R Kiss, D McMillan, L Fooks, B K Coombes, B Vicenzino
OBJECTIVES: To compare three different ultrasound-guided injections for chronic tennis elbow. DESIGN: Assessor-blinded, randomized controlled comparative trial. METHODS: 44 patients with clinically diagnosed tennis elbow, confirmed by Doppler ultrasound, received under ultrasound guidance, a single corticosteroid injection (n=14), or two injections (separated by 4 weeks) of either autologous blood (n=14) or polidocanol (n=16). Clinical and ultrasound examination was performed at baseline, 4, 12 and 26 weeks...
October 29, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27839664/effects-of-scapular-taping-on-the-activity-onset-of-scapular-muscles-and-the-scapular-kinematics-in-volleyball-players-with-rotator-cuff-tendinopathy
#14
Hio Teng Leong, Gabriel Yin-Fat Ng, Siu Ngor Fu
OBJECTIVES: To examine the effect of scapular taping on the activity onset of scapular muscles and the scapular kinematics during arm elevation in volleyball players with rotator cuff (RC) tendinopathy. DESIGN: Randomized placebo-controlled repeated measures METHODS: Twenty-six male volleyball players with RC tendinopathy (mean age=23.6±3.3years) participated in the study. Electromyography (EMG) activity onset of upper trapezius (UT), middle trapezius (MT), lower trapezius (LT) and serratus anterior (SA) and the three-dimensional scapular kinematics quantified by using an acromial marker cluster method were compared with three scapular taping protocols, namely, no taping, therapeutic taping, and placebo taping...
October 29, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27838232/aortic-compliance-variation-in-long-male-distance-triathletes-a-new-insight-into-the-athlete-s-artery
#15
Anne-Charlotte Dupont, Mathias Poussel, Gabriela Hossu, Pierre-Yves Marie, Bruno Chenuel, Jacques Felblinger, Damien Mandry
OBJECTIVES: To assess cardiac and vascular adaptations in long-distance male triathletes and the influence of an increased training volume on these parameters. DESIGN: Case-control study using long-distance male triathletes (Tri) (n=12) and an age-matched cohort of sedentary volunteers (Ctrl). METHODS: All participants gave an informed consent and underwent a Cardiovascular Magnetic Resonance imaging (CMR) exam to measure left and right ventricle functional parameters, and aortic parameters (surface, strain, compliance, pulse wave velocity)...
October 29, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27836627/what-is-the-most-accurate-and-reliable-methodological-approach-for-predicting-peak-height-velocity-in-adolescents-a-systematic-review
#16
REVIEW
Kathryn Mills, Donovan Baker, Verity Pacey, Martin Wollin, Michael K Drew
OBJECTIVES: To identify the most accurate method of predicting peak height velocity in adolescents. DESIGN: Systematic review. METHODS: A comprehensive literature search of six electronic databases and reference lists was conducted. Studies that met selection criteria of (1) observational longitudinal cohort study (2) reproducible method/s of predicting peak height velocity (3) minimum six-month follow-up (4) healthy male and/or female adolescent subjects, with the exception of participants with adolescent idiopathic scoliosis, were considered for review...
October 29, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27866841/thai-yoga-improves-physical-function-and-well-being-in-older-adults-a-randomised-controlled-trial
#17
Chaiya Noradechanunt, Anthony Worsley, Herbert Groeller
OBJECTIVES: Compare two 12-week low-intensity exercise regimens on components of physical function and quality of life in community-dwelling healthy yet sedentary adults aged over 60. DESIGN: This study used a randomised, multi-arm, controlled trial design. METHODS: Thirty-nine sedentary participants (29 women), aged 67.7±6.7 years were randomly allocated to either a 12-week Thai Yoga (TY) or Tai Chi (TC) for 90min twice per week, or telephone counselling Control (C)...
October 27, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27825551/repeated-sprint-ability-but-not-neuromuscular-fatigue-is-dependent-on-short-versus-long-duration-recovery-time-between-sprints-in-healthy-males
#18
Michael R Monks, Chris T Compton, Joseph D Yetman, Kevin E Power, Duane C Button
OBJECTIVES: During maximal intensity leg cycling sprints, previous research has shown that central and peripheral fatigue development occurs with various (<30s) short-duration recovery periods between sprints. The aim of the current study was to compare the development of neuromuscular fatigue during maximal intensity lower-body sprints interspersed with short and longer duration recovery periods. DESIGN: Crossover study. METHODS: Ten participants completed 10, 10s sprints interspersed with either 30 or 180s of recovery...
October 27, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27989443/rating-perceived-exertion-using-facial-expressions
#19
EDITORIAL
Gordon S Waddington
No abstract text is available yet for this article.
January 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27421650/joint-dynamics-of-rear-and-fore-foot-unplanned-sidestepping
#20
Cyril J Donnelly, Chamnan Chinnasee, Gillian Weir, Siriporn Sasimontonkul, Jacqueline Alderson
OBJECTIVES: Compare the lower-limb mechanics and anterior cruciate ligament (ACL) injury risk of athletes using a habitual rear-foot (RF) and fore-foot (FF) fall pattern during unplanned sidestepping (UnSS). DESIGN: Experimental cross-sectional. METHODS: Nineteen elite female field hockey players attended one biomechanical motion capture testing session, which consisted of a random series of pre-planned and unplanned sidestepping sport tasks...
January 2017: Journal of Science and Medicine in Sport
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