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Journal of Science and Medicine in Sport

Sally J Bromley, Michael K Drew, Andrew McIntosh, Scott Talpey
OBJECTIVES: Heart rate (HR), blood lactate concentration [La] and/or rating of perceived exertion (RPE) have been utilised to monitor judo training load in technical and randori (competition training) sessions, but are yet to be investigated in mixed sessions containing both elements. Therefore the purpose of this study was to: (1) determine the stability of these variables, and (2) to assess the efficacy of RPE as a load variable for mixed judo sessions. DESIGN: Cross-sectional study...
March 15, 2018: Journal of Science and Medicine in Sport
Susan Mayes, Peter Smith, Jill Cook
OBJECTIVES: Professional ballet dancers may have hip bony morphology that predisposes them to cartilage or labral injury. However, the relationship between bony morphology and pathology has not been investigated in ballet. This study investigates associations between bony morphology, chondrolabral defects and hip pain in ballet dancers. DESIGN: Cross-sectional study. METHODS: 33 male and female professional ballet dancers, (mean age 27 years (range 19-39)), completed questionnaires with hip pain measured on a visual analogue scale; and underwent 3...
March 3, 2018: Journal of Science and Medicine in Sport
Michael A Wewege, Rachel E Ward
OBJECTIVES: To quantitatively compare bone mineral density (BMD) outcomes between pre-professional female adolescent ballet dancers and control populations. DESIGN: Systematic review and meta-analysis. METHODS: Six electronic databases and relevant journals were systematically searched up to August 2017. Included articles examined BMD in adolescent females undergoing pre-professional ballet training and healthy age-matched controls with an available English full text...
March 2, 2018: Journal of Science and Medicine in Sport
Nigel Harris, Andrew Kilding, Shivani Sethi, Fabrice Merien, Jinger Gottschall
OBJECTIVES: Given apparent consumer interest in calorie counting and arguably inadequate understanding of the differential effects of exercise modality despite equivalent caloric expenditure, we sought to quantify and compare the acute physiological responses within and between a BODYPUMP™ (BP) group-fitness class and steady-state cycling (CARDIO), matched for caloric cost (iso-caloric) and time (iso-time). DESIGN: Acute cross-over study design. METHODS: Twelve healthy recreationally active females (30...
March 2, 2018: Journal of Science and Medicine in Sport
Sangeeta Rathi, Nicholas F Taylor, Brendan Soo, Rodney A Green
OBJECTIVES: To determine whether patients with symptomatic rotator cuff pathology had more glenohumeral joint translation and different patterns of rotator cuff muscle activity compared to controls. DESIGN: Repeated measurements of glenohumeral translation and muscle activity in two positions and six testing conditions in two groups. METHODS: Twenty participants with a symptomatic and diagnosed rotator cuff tear and 20 age, and gender matched controls were included...
March 2, 2018: Journal of Science and Medicine in Sport
Athol Thomson, Einar Einarsson, Clint Hansen, Chris Bleakley, Rod Whiteley
OBJECTIVES: Compare maximum plantar force (Fmax) during running in soccer players following anterior cruciate ligament reconstruction (ACLR) as they pass return to sport (RTS) criteria. DESIGN: Case control study. METHODS: Soccer players after ACLR (n=16) and matched healthy controls (n=16) ran on a treadmill at 12, 14 and 16km/h while plantar loading data was measured using an in-shoe pressure system (Pedar-X, Novel). Fmax and contact time of the injured and uninjured limbs in athletes <9months post-ACLR and those ≥9months ACLR were compared to healthy players (no ACLR)...
March 1, 2018: Journal of Science and Medicine in Sport
Pascal Edouard, Astrid Junge, Marianna Kiss-Polauf, Christophe Ramirez, Monica Sousa, Toomas Timpka, Pedro Branco
OBJECTIVES: The quality of epidemiological injury data depends on the reliability of reporting to an injury surveillance system. Ascertaining whether all physicians/physiotherapists report the same information for the same injury case is of major interest to determine data validity. The aim of this study was therefore to analyse the data collection reliability through the analysis of the interrater reliability. DESIGN: Cross-sectional survey. METHODS: During the 2016 European Athletics Advanced Athletics Medicine Course in Amsterdam, all national medical teams were asked to complete seven virtual case reports on a standardised injury report form using the same definitions and classifications of injuries as the international athletics championships injury surveillance protocol...
March 1, 2018: Journal of Science and Medicine in Sport
Jason C Tee, Sheree Bekker, Rob Collins, Jannie Klingbiel, Ivan van Rooyen, David van Wyk, Kevin Till, Ben Jones
OBJECTIVES: Due to the complex systems nature of injuries, the responsibility for injury risk management cannot lie solely within a single domain of professional practice. Interdisciplinary collaboration between technical/tactical coaches, strength and conditioning coaches, team doctors, physical therapists and sport scientists is likely to have a meaningful impact on injury risk. This study describes the application and efficacy of a multidisciplinary approach to reducing team injury risk in professional rugby union...
February 14, 2018: Journal of Science and Medicine in Sport
Brooklyn J Fraser, Leigh Blizzard, Michael D Schmidt, Markus Juonala, Terence Dwyer, Alison J Venn, Costan G Magnussen
OBJECTIVES: To assess whether childhood cardiorespiratory fitness (CRF) and muscular fitness phenotypes (strength, power, endurance) predict adult glucose homeostasis measures. DESIGN: Prospective longitudinal study. METHODS: Study examining participants who had physical fitness measured in childhood (aged 7-15 years) and who attended follow-up clinics approximately 20 years later and provided a fasting blood sample which was tested for glucose and insulin...
February 14, 2018: Journal of Science and Medicine in Sport
Scott Michael, Ollie Jay, Kenneth S Graham, Glen M Davis
OBJECTIVES: This study investigated indirect measures of post-exercise parasympathetic reactivation (using heart-rate-variability, HRV) and sympathetic withdrawal (using systolic-time-intervals, STI) following upper- and lower-body exercise. DESIGN: Randomized, counter-balanced, crossover. METHODS: 13 males (age 26.4±4.7years) performed maximal arm-cranking (MAX-ARM) and leg-cycling (MAX-LEG). Subsequently, participants undertook separate 8-min bouts of submaximal HR-matched exercise of each mode (ARM and LEG)...
February 12, 2018: Journal of Science and Medicine in Sport
Stephanie A Prince, Robert D Reid, Jordan Bernick, Anna E Clarke, Jennifer L Reed
OBJECTIVES: To compare sedentary time (ST) measured by self-report using a single question from the short-form International Physical Activity Questionnaire (SF-IPAQ), 18-items from the Sedentary Behaviour Questionnaire (SBQ) and objectively using an accelerometer among a large sample of nurses. DESIGN: Cross-sectional. METHODS: Participants wore an ActiGraph GT3X accelerometer (≥4 days, ≥10h/day) and self-reported usual day sitting using the IPAQ and sitting in different modes using the SBQ...
February 8, 2018: Journal of Science and Medicine in Sport
Mehrdad Farrokhi
No abstract text is available yet for this article.
February 8, 2018: Journal of Science and Medicine in Sport
Kate Ridley, Sara Zabeen, Belinda K Lunnay
OBJECTIVES: This study measured the physical activity levels of children during practice sessions of four popular organised sports in Australia. DESIGN: Cross-sectional observational design. METHODS: Participants comprised children from four local organised sports clubs in suburban Adelaide, South Australia. The sports examined were Australian Rules Football (AFL), girls' netball, boys' soccer and girls' soccer. Each participant wore a waist-mounted GT3X or GT3X+Actigraph accelerometer in either one or two of the practice sessions...
February 8, 2018: Journal of Science and Medicine in Sport
Samuel Chalmers, Ollie Jay
No abstract text is available yet for this article.
February 7, 2018: Journal of Science and Medicine in Sport
J J A A M Hoeboer, G Ongena, M Krijger-Hombergen, E Stolk, G J P Savelsbergh, S I de Vries
OBJECTIVES: The aim of the presented study is to provide age- and gender-related normative values and MQ values for a motor skills test, the Athletic Skills Track, among 4- to 12-year-old children. DESIGN: Cross-sectional. METHODS: In 2016, a total of 7977 Dutch children, 4036 boys (mean age 8.6 years, SD 2.1) and 3941 girls (mean age 8.6 years, SD 2.1), performed an age-related version of the Athletic Skills Track (AST). The AST is a track consisting of 5-7 fundamental movement skill tasks that should be completed as fast as possible...
February 7, 2018: Journal of Science and Medicine in Sport
Stephen Mark Hadlow, Derek Panchuk, David Lindsay Mann, Marc Ronald Portus, Bruce Abernethy
OBJECTIVES: To overview a framework that provides a theoretically-grounded approach to predicting the types of modified perceptual training tasks that will stimulate transfer of improved perceptual skills to sport performance environments. Modified perceptual training (MPT) collectively describes on- or off-field sports training tasks that are specifically designed to develop visual and perceptual-cognitive skill. Traditional training approaches in sport include sports vision training and perceptual-cognitive training, while recently, new technologies have enabled a broad range of additional MPT tools to become available to coaches and athletes...
February 3, 2018: Journal of Science and Medicine in Sport
Danilo R Silva, Cláudia S Minderico, Fernando Pinto, Paul J Collings, Edilson S Cyrino, Luís B Sardinha
OBJECTIVES: We investigated the impact of a standing desk intervention on daily objectively monitored sedentary behavior and physical activity in 6th grade school students. DESIGN: Cluster non-randomised controlled trial. METHOD: Two classes (intervention students: n=22 [aged 11.8±0.4years]; control students: n=27 [11.6±0.5years]) from a public school in Lisbon were selected. The intervention involved replacing traditional seated classroom desks for standing desks, for a total duration of 16 weeks, in addition to performing teacher training and holding education/motivation sessions with students and parents...
February 3, 2018: Journal of Science and Medicine in Sport
Olivia E Knowles, Eric J Drinkwater, Charles S Urwin, Séverine Lamon, Brad Aisbett
OBJECTIVES: Inadequate sleep (e.g., an insufficient duration of sleep per night) can reduce physical performance and has been linked to adverse metabolic health outcomes. Resistance exercise is an effective means to maintain and improve physical capacity and metabolic health, however, the outcomes for populations who may perform resistance exercise during periods of inadequate sleep are unknown. The primary aim of this systematic review was to evaluate the effect of sleep deprivation (i...
February 2, 2018: Journal of Science and Medicine in Sport
Nicolas Bourdillon, Sasan Yazdani, Masih Nilchian, Alessio Mariano, Jean-Marc Vesin, Grégoire P Millet
OBJECTIVES: Heart rate variability (HRV) is commonly used to diagnose overreaching and monitor athletes' responses to training. Baroreflex sensitivity (BRS) is modified by changes in training load and might be another means to detect overreaching. The goal of this study was to assess BRS and HRV changes in two groups of athletes responding either negatively (FOR) or positively (AF) to similar training overload. DESIGN: Fifteen athletes performed 2-week baseline (BSL) training followed by 3-week overload (+45%; OVL) and 2-week recovery (-20%; RCV)...
January 31, 2018: Journal of Science and Medicine in Sport
Jean-Francois Esculier, Laurent J Bouyer, Blaise Dubois, Jean Leblond, Mélanie Brisson, Luc Chau, Jean-Sébastien Roy
OBJECTIVES: To identify predictors of outcome to a rehabilitation program focused on education and management of training loads in runners with patellofemoral pain (PFP). DESIGN: Secondary analyses of a randomized clinical trial. METHODS: Fifty-eight runners with PFP (62% female, aged 31.2±6.6years, running 20.3±5.6km/week) were included in analyses. Following baseline collection of demographics, anthropometry, symptomatology, isometric strength, running mechanics and radiological data, runners were randomized to one of the three 8-week intervention program: (1) Education on symptoms management and training modifications; (2) Education+Exercise program; (3) Education+Gait retraining...
January 27, 2018: Journal of Science and Medicine in Sport
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