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Research in Sports Medicine

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https://www.readbyqxmd.com/read/28656783/oxidative-stress-and-antioxidant-biomarker-responses-after-a-moderate-intensity-soccer-training-session
#1
Rodrigo Mello, Ricardo Mello, Diego Gomes, Gabriel Andrade Paz, Igor Nasser, Humberto Miranda, Verônica P Salerno
The present study investigated the effects of a moderate-intensity soccer training session on the production of reactive oxygen species (ROS) and the antioxidant capacity in athletes along with the biomarkers creatine kinase and transaminases for lesions in muscle and liver cells. Twenty-two male soccer players participated in this study. Blood samples were collected 5 min before and after a moderate-intensity game simulation. The results showed a decrease in the concentration of reduced glutathione (GSH) from an elevation in the production of ROS that maintained the redox homeostasis...
June 28, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28436236/put-two-and-two-together-to-make-the-most-of-physical-activity-and-healthy-nutrition-a-longitudinal-online-study-examining-cross-behavioural-mechanisms-in-multiple-health-behaviour-change
#2
Juliane Paech, Sonia Lippke
Recommendations for physical activity and for fruit and vegetable intake are often not translated into action due to deficits in self-regulatory strategies. The present study examines the interplay of intention, intergoal facilitation, action and coping planning and self-regulation in facilitating physical activity and healthy nutrition. In an online study, intentions and behaviours were assessed at baseline, intergoal facilitation and planning at 4-week follow-up, self-regulation, physical activity and nutrition at 6-month follow-up in a non-clinical sample...
April 23, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28385043/the-dose-response-effects-of-aerobic-exercise-on-musculoskeletal-injury-a-post-hoc-analysis-of-a-randomized-trial
#3
Justin C Brown, Kathryn H Schmitz
In a post hoc analysis, we quantified the risk of musculoskeletal injury (MSI) associated with different volumes of aerobic exercise in a randomized trial. Premenopausal women (n = 119) were randomized to one of three groups: low-dose aerobic exercise (150 min·per week), high-dose aerobic exercise (300 min·per week) or control (usual activity) for 5 months. Compared to the control group, the risk of reporting an acute MSI increased with higher volumes of aerobic exercise, with a similar pattern observed for recurrent MSI...
July 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28412865/strength-adaptation-to-squat-exercise-is-different-between-caucasian-and-south-asian-novice-exercisers
#4
Allan Knox, Nicholas Sculthorpe, Julien S Baker, Fergal Grace
This study compared the progression of muscular strength (MS) adaptation between age-matched Caucasian (CAUC) and South Asian (SOU) men during 6 weeks (3× week(-1)) of resistance training. MS was determined pre and post intervention by 3-repetition maximum (3RM) strength tests, and data were analysed using repeated measures ANOVA. Pre-intervention upper and lower body 3RM were similar between groups and both upper and lower body 3RM increased in CAUCs (P < .001) and SOUs (P < .001) following resistance training...
April 16, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28399668/kinesiology-tape-mediates-soccer-simulated-and-local-peroneal-fatigue-in-soccer-players
#5
Claire Farquharson, Matt Greig
To investigate the efficacy of kinesiology taping in mediating the influence of fatigue on ankle sprain risk, 12 male soccer players completed single-leg dynamic balance trials pre- and post-exercise (soccer-specific protocol, isokinetic ankle inversion/eversion protocol) in each of three counter-balanced taping conditions (no tape, zinc oxide tape ZO, kinesiology tape KT). Balance was quantified as the overall stability index (OSI) and directional stability indices of platform deflection. Soccer-specific fatigue only increased OSI in the no tape condition (p = 0...
April 12, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28397524/effects-of-oxygen-enriched-air-on-cognitive-performance-during-scuba-diving-an-open-water-study
#6
Anne-Kathrin Brebeck, Andreas Deussen, Henning Schmitz-Peiffer, Ursula Range, Costantino Balestra, Sinclair Cleveland, Jochen D Schipke
Backround: Nitrogen narcosis impairs cognitive function, a fact relevant during SCUBA-diving. Oxygen-enriched air (nitrox) became popular in recreational diving, while evidence of its advantages over air is limited. AIM: Compare effects of nitrox28 and air on two psychometric tests. METHODS: In this prospective, double-blind, open-water study, 108 advanced divers (38 females) were randomized to an air or a nitrox-group for a 60-min dive to 24 m salt water. Breathing gas effects on cognitive performance were assessed during the dive using a short- and long-term memory test and a number connection test...
April 11, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28393630/pain-perception-and-cardiovascular-system-response-among-athletes-playing-contact-sports
#7
Katarzyna Leźnicka, Matthias Pawlak, Monika Białecka, Krzysztof Safranow, Paweł Cięszczyk
The aim of this study was to determine whether the contact sports change the perception of pain as assessed by the cold pressor test (CPT), and if the test induces the same reaction of the cardiovascular system in contact athletes and non-athletes. The study involved 321 healthy men; 140 contact athletes and 181 students of the University of Szczecin (control). Pain threshold and pain tolerance were evaluated using CPT. Cardiovascular measurements were made during CPT. The contact athletes showed a much higher tolerance to pain than the control group (median time 120 vs...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28393557/recurrent-stingers-in-an-adolescent-american-football-player-dilemmas-of-return-to-play-a-case-report-and-review-of-the-literature
#8
Jason L Zaremski, MaryBeth Horodyski, Daniel C Herman
We present the case of a 16-year-old football linebacker with a history of recurrent stingers. Initial physical examination was normal as were cervical spine radiographs. MRI of the cervical spine revealed relative stenosis. Electrodiagnostic testing revealed chronic bilateral neurogenic changes of the superior trunk of the brachial plexus. A Kerr Collar was obtained to minimize head acceleration and force transmission through the neck. While there are return-to-play guidelines for recurrent stingers, there are inconsistencies with those recommendations...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28393555/examining-the-relationship-between-endogenous-pain-modulation-capacity-and-endurance-exercise-performance
#9
Andrew Flood, Gordon Waddington, Stuart Cathcart
The aim of the current study was to examine the relationship between pain modulatory capacity and endurance exercise performance. Twenty-seven recreationally active males between 18 and 35 years of age participated in the study. Pain modulation was assessed by examining the inhibitory effect of a noxious conditioning stimulus (cuff occlusion) on the perceived intensity of a second noxious stimulus (pressure pain threshold). Participants completed two, maximal voluntary contractions followed by a submaximal endurance time task...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28391723/the-impact-of-patellar-tendinopathy-on-sports-and-work-performance-in-active-athletes
#10
Astrid J De Vries, Wendy Koolhaas, Johannes Zwerver, Ron L Diercks, Kari Nieuwenhuis, Henk Van Der Worp, Sandra Brouwer, Inge Van Den Akker-Scheek
Greater insight into sports and work performance of athletes with patellar tendinopathy (PT) will help establish the severity of this common overuse injury. Primary aim of this study is to investigate the impact of PT on sports and work performance. Seventy seven active athletes with PT (50 males; age 28.1 ± 8.2 years; Victorian Institute of Sports Assessment Patella 56.4 ± 12.3) participated in this survey. Sports performance, work ability and work productivity were assessed using the Oslo Sports Trauma Research Center overuse injury questionnaire, the single-item Work Ability Index and the Quantity and Quality questionnaire, respectively...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28391721/validity-and-usefulness-of-the-line-drill-test-for-adolescent-basketball-players-a-bayesian-multilevel-analysis
#11
Humberto M Carvalho, Carlos E Gonçalves, Bernard Grosgeorge, Roberto R Paes
The study examined the validity of the Line Drill test (LD) in male adolescent basketball players (10-15 years). Sensitiveness of the LD to changes in performance across a training and competition season (4 months) was also considered. Age, maturation, body size and LD were measured (n = 57). Sensitiveness of the LD was examined pre- and post-competitive season in a sub-sample (n = 44). The time at each of the four shuttle sprints of the LD (i.e. four stages) was modelled with Bayesian multilevel models...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28391716/epidemiological-survey-of-anterior-cruciate-ligament-injury-in-japanese-junior-high-school-and-high-school-athletes-cross-sectional-study
#12
Saeko Takahashi, Toru Okuwaki
We investigated the incidence of anterior cruciate ligament (ACL) injuries among athletes in junior high school and high school by retrospectively reviewing Japan Sports Council notification data registered over a period of 10 years. The total number of ACL injuries during the 10-year period was 30,458, with an incidence of 0.81 per 1000 athlete-years. Among those with ACL injuries, the ratio of girls to boys was 2.8, and incidence of injury was significantly greater among girls than boys (1.36 as against 0...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28367687/effects-of-tai-chi-exercise-on-body-stability-among-the-elderly-during-stair-descent-under-different-levels-of-illumination
#13
Qipeng Song, Xuewen Tian, Del Wong, Cui Zhang, Wei Sun, Peng Cheng, Dewei Mao
The elderly are prone to stair descent falls under low illumination. Tai Chi, a traditional Chinese conditioning exercise, has been proved to improve body stability by altering body condition, gait, and proprioception. This study investigates whether Tai Chi exercise could improve body stability during stair descent under high and low illumination. Three groups of elderly women who practice Tai Chi, brisk walking, and no exercise were included. They descended from a simulated staircase. Tai Chi participants decreased horizontal velocity, centre of mass (COM) sway, and increased foot clearance compared with other participants, these movements could increase body stability; Compared with under high illumination, Tai Chi participants decreased horizontal velocity, loading rate, braking impulse, and increased inclination angle, COM sway, centre of pressure displacement under low illumination...
April 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28367686/biomechanical-metabolic-and-cardiopulmonary-responses-of-masters-recreational-runners-during-running-at-different-speeds
#14
Hallie Hahn, Kevin R Vincent, Daniel C Herman, Cong Chen, Laura Ann Zdziarski, Christine Morgan, Heather K Vincent
This study tested interactions between age and running speed on biomechanics, metabolic responses and cardiopulmonary responses. Three-hundred participants ran at preferred and standardized speeds. Age group (younger, masters [≥40 years]) by speed (self-selected 8.8 km/h, 11.2 km/h and 13.6 km/h) interactions were tested on main outcomes of sagittal kinematic, temporal spatial, metabolic and cardiopulmonary parameters. At all speeds, angular displacements of the ankle, pelvis and knee were less in masters than younger runners (Hedges g effect size range = 0...
April 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28147703/does-short-term-gluteal-activation-enhance-muscle-performance
#15
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...
April 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
#16
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)...
April 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28140673/lower-extremity-and-spine-characteristics-in-young-dancers-with-and-without-patellofemoral-pain
#17
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...
April 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28128007/prevalence-and-proposed-mechanisms-of-chronic-low-back-pain-in-baseball-part-i
#18
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...
April 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28128000/assessment-and-rehabilitation-of-chronic-low-back-pain-in-baseball-part-ii
#19
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...
April 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
#20
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...
April 2017: Research in Sports Medicine
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