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Research in Sports Medicine

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https://www.readbyqxmd.com/read/28147703/does-short-term-gluteal-activation-enhance-muscle-performance
#1
Darryl J Cochrane, Michael C Harnett, Scott C Pinfold
A reduction in gluteus maximus (GM) strength may contribute to the etiology of musculoskeletal impairments and lower-extremity injuries. Currently, there is a paucity of evidence regarding the efficacy of implementing a short-term gluteal activation programme to improving muscle performance. Twenty four semi-professional rugby males were assigned randomly to a gluteal activation group (GLUTE) or a control group (CON). During the 6-week training intervention, the GLUTE and CON groups performed the same training, however that GLUTE group performed seven gluteal activation exercises three times weekly prior to their normal training sessions...
February 1, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28142285/effects-of-a-12-week-physical-activities-programme-on-sleep-in-female-university-students
#2
Rémy Hurdiel, Timothée Watier, Kimberly Honn, Thierry Pezé, Gautier Zunquin, Denis Theunynck
Lack of sleep is known to negatively affect adolescent's health and the links between regular physical activity and sleep are unclear.This pilot study investigated whether the regular practice of physical activities among sedentary female students would improve their sleep. Nineteen female students, identified as sedentary and having poor subjective sleep quality were assigned in two groups to a 12-week university physical activities programme in accordance with the recommendations of World Health Organisation (N = 10) or to a control condition (N = 9)...
February 1, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28140673/lower-extremity-and-spine-characteristics-in-young-dancers-with-and-without-patellofemoral-pain
#3
Nili Steinberg, Shay Tenenbaum, Israel Hershkovitz, Aviva Zeev, Itzhak Siev-Ner
Very little is known about patellofemoral pain syndrome (PPFS) among young dancers. Understanding the mechanism of the injury and implementing a preventative programme are important in order to minimize the risk of PFPS. The aim of the current study is to determine the extent to which factors such as lower extremity and back characteristics are common among dancers with PFPS. The study population included 271 dancers with PFPS and 271 non-injured dancers, aged 10-16 years. All dancers were screened for morphometric profile, dance discipline (h/week), anatomical anomalies (present/absent of scoliosis, genu valgus/varum, etc...
January 31, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28128007/prevalence-and-proposed-mechanisms-of-chronic-low-back-pain-in-baseball-part-i
#4
Joseph G Wasser, Jason L Zaremski, Daniel C Herman, Heather K Vincent
The prevalence of low back pain (LBP) among active baseball players ranges between 3 and 15%. The execution of baseball-specific manoeuvres, such as pitching or batting, may be related to the onset of LBP. These baseball motions are complex and require appropriate activation of the core musculature to produce a well-timed motion with forces minimized at the extremities. The spine, core and back musculature are involved with acceleration and deceleration of rotational motions. This narrative review synopsizes the available evidence of the prevalence of and mechanical factors underlying LBP in the baseball population...
January 27, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28128000/assessment-and-rehabilitation-of-chronic-low-back-pain-in-baseball-part-ii
#5
Joseph G Wasser, Jason L Zaremski, Daniel C Herman, Heather K Vincent
Repetitive throwing and hitting motions in baseball place mechanical stresses to the lumbar spine which may cause low back pain (LBP). Pain may be due to vertebral stress reactions or insufficiency fractures, intervertebral disc degeneration or intervertebral disc herniation. Untreated chronic conditions have high potential to lead to a more significant injury such as spondylolysis. Chronic LBP increases the risk for missed playing time, early career termination and lower quality of life after retirement. Proper clinical assessment and prevention/rehabilitation of LBP in this population is thus important for performance, play time and overall long-term quality of life...
January 27, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28121177/effects-of-elastic-taping-non-elastic-taping-and-static-stretching-on-recovery-after-intensive-eccentric-exercise
#6
Disaphon Boobphachart, Nuttaset Manimmanakorn, Apiwan Manimmanakorn, Worrawut Thuwakum, Michael J Hamlin
The purpose of this study was to compare the effect of elastic tape (Kinesio tape) to placebo tape or static stretching on delayed onset muscle soreness. Fifty-one untrained female healthy volunteers were randomly assigned into three groups (n = 17/group), elastic tape, placebo tape and stretching group. Muscle soreness was induced by 4 sets of 25 maximal isokinetic (60°.s(-1)) eccentric contractions of dominant quadriceps on an isokinetic dynamometer. Compared with placebo tape, the elastic tape participants had less muscle soreness at 72 h post-exercise (p = 0...
January 25, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28120617/collar-height-and-heel-counter-stiffness-for-ankle-stability-and-athletic-performance-in-basketball
#7
Hui Liu, Zitian Wu, Wing-Kai Lam
This study examined the effects of collar height and heel counter-stiffness of basketball shoes on ankle stability during sidestep cutting and athletic performance. 15 university basketball players wore customized shoes with different collar heights (high and low) and heel counter-stiffness (regular, stiffer and stiffest) for this study. Ankle stability was evaluated in sidestep cutting while athletic performance evaluated in jumping and agility tasks. All variables were analysed using two-way repeated ANOVA...
January 25, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28114830/substance-use-and-misuse-in-a-mountain-ultramarathon-new-insight-into-ultrarunners-population
#8
Sandra Didier, Jean-Charles Vauthier, Nicolas Gambier, Pierre Renaud, Bruno Chenuel, Mathias Poussel
Endurance and ultra-endurance events have become increasingly popular. The aim of our study was to explore the use of medication among endurance runners participating in the 2014 Infernal Trail des Vosges. Among the 389 runners engaged, 297 (76.3%) completed a specific questionnaire dealing with substance use/misuse. Our results show a 27% (before the race) and 18% (during the race) prevalence of substance use. The two major classes of substances used were non-steroidal anti-inflammatory drugs (NSAIDs; 9.8%) and painkillers (6...
January 23, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28114817/the-age-of-the-best-ultramarathon-performance-the-case-of-the-comrades-marathon
#9
Beat Knechtle, Pantelis Theodoros Nikolaidis
The aim of the present study was to determine the age of the fastest running speed in 202,370 runners (34,090 women and 168,280 men) competing in the "Comrades Marathon" between 1994 and 2015 using non-linear regression analysis (second order polynomial function). When all runners were considered in 1-year age intervals, the fastest running speed (9.61 ± 1.65 km/h) was achieved at the age of 29.89 years in men, whereas women achieved it at the age of 35.96 years 8.60 ± 1.10 km/h. When the fastest runners were considered in 1-year intervals, the fastest running speed (16...
January 23, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28105865/lower-extremity-variability-changes-with-drop-landing-height-manipulations
#10
Andrew D Nordin, Janet S Dufek
Landing is a common lower extremity injury mechanism in sport, with potential connections to movement control accessed through variability measures. We investigated intra-subject lower extremity variability changes following drop-landing height manipulations using standard deviation (SD) and coefficient of variation (CV) among lower extremity peak sagittal joint angles and moments. Fourteen healthy participants completed five drop-landing trials from five heights 20%, 60%, 100%, 140% and 180% maximum vertical jump height (MVJH)...
January 20, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27934546/sodium-bicarbonate-ingestion-and-individual-variability-in-time-to-peak-ph
#11
Andy Sparks, Emily Williams, Amy Robinson, Peter Miller, David J Bentley, Craig Bridge, Lars R Mc Naughton
This study determined variability in time-to-peak pH after consumption of 300 mg kg(-)(1) of sodium bicarbonate. Seventeen participants (mean ± SD: age 21.38 ± 1.5 years; mass 75.8 ± 5.8 kg; height 176.8 ± 7.6 cm) reported to the laboratory where a resting capillary sample was taken. Then, 300 mg kg(-1) of NaHCO3 in 450 ml of flavoured water was ingested. Participants rested for 90 min and repeated blood samples were procured at 10 min intervals for 60 min and then every 5 min until 90 min...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27912252/impact-of-stretching-on-the-performance-and-injury-risk-of-long-distance-runners
#12
Claire Baxter, Lars R Mc Naughton, Andy Sparks, Lynda Norton, David Bentley
Stretching, either prior to exercise or at the end, or both, is typically carried out by all individuals undertaking sporting activity whether they be elite or recreational athletes. The many forms of stretching available to the athlete, either passive or active, have long been thought to improve performance, decrease injury and generally be advantageous to the athlete. This review examines the current state of the literature and evaluates what athletes can and should do with respect to this controversial topic...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27885859/effect-of-8%C3%A2-months-of-whole-body-vibration-training-on-quality-of-life-in-elderly-women
#13
Fernanda Santin-Medeiros, Alejandro Santos-Lozano, Carlos Cristi-Montero, Nuria Garatachea Vallejo
Whole-body vibration (WBV) training in elderly may improve muscle strength, muscle power and postural control. However, knowledge about the effect of WBV training in elderly on measures of health as a multidimensional construct (health-related quality of life, HRQoL) is scarce. The present study aimed to determine the effects of WBV training on HRQoL in elderly women. A total of 37 women (aged 82.4 ± 5.7 years) were recruited and were assigned to either the WBV group or to the control (CON) group. After 8 months of training, the WBV group showed non-significant changes on HRQoL and additional health-related outcomes (fall risk, life satisfaction or cognitive status)...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27882777/real-time-visual-activity-feedback-for-physical-activity-improvement-in-breast-and-colon-cancer-patients
#14
Lars Gabrys, Stefan Sperzel, Marcus Bernhoerster, Winfried Banzer, Lutz Vogt
The study aims to evaluate the effects and feasibility of a biofeedback device for physical activity (PA) improvement in breast and colon cancer patients. Daily PA of 19 cancer patients was measured by accelerometry (ActiGraph, GT1 M). Additionally, patients wore a motion sensor with real-time visual activity feedback (ActiSmile). Counts per minutes (cpm) and moderate to vigorous physical activity (MVPA) were calculated and patients' activity data were compared to PA of 20 age-matched healthy controls. Baseline PA of patients was lower compared to controls...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27873542/a-6-year-surveillance-study-of-stingers-in-ncaa-american-football
#15
James Green, Scott L Zuckerman, Sara L Dalton, Aristarque Djoko, Dustin Folger, Zachary Y Kerr
This study describes the epidemiology of "stinger" injuries in National Collegiate Athletic Association (NCAA) Men's Football. About 57 NCAA Men's Football programmes provided 153 team-seasons of injury data to the NCAA Injury Surveillance Programme (NCAA-ISP) during the 2009/2010-2014/2015 academic years. In the study period, 229 "stingers" were reported for an injury rate of 2.04/10,000 athlete-exposures (AE). Most "stingers" were reported during competitions (55.5%) and the preseason (80.3%) and resulted in time loss less than 24 hours (63...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27868433/performance-trends-in-3000-m-open-water-age-group-swimmers-from-25-to-89-years-competing-in-the-fina-world-championships-from-1992-to-2014
#16
Beat Knechtle, Pantelis T Nikolaidis, Thomas Rosemann, Christoph A Rüst
We investigated trends in participation, performance and sex difference in performance in 3000 m freestyle in age groups swimmers (25-29 to 85-89 years) competing in the Fédération Internationale de Natation World Masters Championships between 1992 and 2014. During this period, participation increased in women and men. Women and men improved race times across years in all age groups. Women were slower in age groups 25-29 to 70-74 years. In age groups 75-79 and 85-89 years, however, race times were similar for both women and men...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27868432/a-criterion-referenced-assessment-is-needed-for-measuring-child-obesity
#17
Elise C Brown, J Lon Kilgore, Duncan S Buchan, Julien S Baker
Body Mass Index (BMI), as an adiposity indicator, assumes that for any given height a change in weight is attributed to a change in fat. This seems problematic in growing youth as great divergence is evident in bone, muscle, and adipose tissue development. Secondly, use of reference populations in categorizing children based on BMI, frequently use arbitrary percentile cut-offs for obesity and do not meet all of the assumptions that cut-offs imply. Lastly, BMI does not control for maturation status. Criterion-referenced assessments of child obesity that account for abdominal adiposity and permit international comparisons, such as waist-to-height ratio (WtHR), must be considered...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27868427/influence-of-shoe-midsole-hardness-on-plantar-pressure-distribution-in-four-basketball-related-movements
#18
Wing-Kai Lam, Wei Xuan Ng, Pui Wah Kong
This study examined how shoe midsole hardness influenced plantar pressure in basketball-related movements. Twenty male university basketball players wore customized shoes with hard and soft midsoles (60 and 50 Shore C) to perform four movements: running, maximal forward sprinting, maximal 45° cutting and lay-up. Plantar loading was recorded using an in-shoe pressure measuring system, with peak pressure (PP) and pressure time integral (PTI) extracted from 10 plantar regions. Compared with hard shoes, subjects exhibited lower PP in one or more plantar regions when wearing the soft shoes across all tested movements (Ps < 0...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27868426/effects-of-regular-tai-chi-practice-and-jogging-on-neuromuscular-reaction-during-lateral-postural-control-in-older-people
#19
Shao-Jun Wang, Dong-Qing Xu, Jing-Xian Li
This study examined the effects of regular Tai Chi practice and jogging on the neuromuscular activity of the trunk, hip, and ankle joint muscles of older people during lateral postural perturbation. A total of 42 older people participated in the study and formed the Tai Chi, jogging, and sedentary control groups. Electromyography signals were collected from the peroneus longus, anterior tibialis, gluteus medius, and erector spinae during unpredictable mediolateral perturbation. The Tai Chi group exhibited significantly faster latencies of the tibialis anterior and erector spinae than the control group...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27855498/mitochondria-targeted-nutraceuticals-in-sports-medicine-a-new-perspective
#20
Sergej M Ostojic
Since mitochondria have been recognized as the cells' key organelles involved in the energy utilization during exercise, targeting the organelle with specifically designed compounds (mitochondria-targeted nutraceuticals, MTNs) may have a great promise in the prevention and treatment of heavy exercise-related mitochondrial dysfunction. In vitro studies suggested that MTNs have antioxidant effects at the molecular level, and might boost mitochondrial biogenesis and organelle bioenergetics, with both processes are known to positively affect exercise performance and recovery...
January 2017: Research in Sports Medicine
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