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International Journal of Sports Medicine

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https://www.readbyqxmd.com/read/30419577/circulating-inflammatory-cytokine-responses-to-endurance-exercise-in-female-rowers
#1
Jaak Jürimäe, Sille Vaiksaar, Priit Purge
This investigation examined the effects of acute rowing exercise on a panel of 12 different inflammatory cytokines. Fifteen female rowers (18.3±1.6 yrs; 172.0±5.0 cm; 67.5±8.8 kg; maximal oxygen consumption [VO2 max]: 47.2±7.9 ml.min.-1 kg-1 ) completed a 1-h endurance exercise (distance: 12.1±1.1 km; energy expenditure [EE]: 639±69 kcal; heart rate: 151±7 beats.min-1 ; intensity: 79.6±3.5% of the second ventilatory turn point). Venous blood samples were analysed for interleukin (IL)-2, IL-4, IL-6, IL-8, IL-10, vascular endothelial growth factor (VEGF), interferon-gamma (IFN-γ), tumor necrosis factor-alpha (TNF-α), IL-1α, IL-1β, monocyte chemoattractant protein-1 (MCP-1) and epidermal growth factor (EGF) concentrations...
November 12, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30419576/impact-loading-during-distracted-running-before-and-after-auditory-gait-retraining
#2
Eric Ching, Winko Wen-Kang An, Ivan Pui Hung Au, Janet Hanwen Zhang, Zoe Y S Chan, Gary Shum, Roy T H Cheung
Visual feedback gait retraining has been reported to successfully reduce impact loading in runners, even when the runners were distracted. However, auditory feedback is more feasible in real life application. Hence, this study compared the peak positive acceleration (PPA), vertical average (VALR) and instantaneous (VILR) loading rate during distracted running before and after a course of auditory feedback gait retraining in 16 runners. The runners were asked to land with softer footfalls with and without auditory feedback...
November 12, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30419575/fasciotomy-for-lateral-lower-leg-chronic-exertional-compartment-syndrome
#3
Aniek Philomena Maria van Zantvoort, Johan Anthonius de Bruijn, Henricus P H Hundscheid, Marike van der Cruijsen-Raaijmakers, Joep A W Teijink, Marc R Scheltinga
Exercise-induced lower leg pain may be caused by chronic exertional compartment syndrome (CECS). Anterior or deep posterior compartments are usually affected. Knowledge about CECS of the lateral compartment (lat-CECS) is limited and outcome after fasciotomy is unknown. The purpose of this study is to report on success rates of fasciotomy in patients with lat-CECS. Surgical success rates in patients with lat-CECS diagnosed with a dynamic intracompartmental pressure (ICP) measurement were studied using a questionnaire (success: excellent or good as judged by the patient; unsuccessful: moderate, fair or poor)...
November 12, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30406624/hip-taping-positively-alters-running-kinematics-in-asymptomatic-females
#4
Ashleigh Masters, Kevin J Netto, Susi Brooker, Diana Hopper, Bernard Liew
Greater functional knee valgus (FKV) is thought to contribute to a greater risk of sustaining overuse running injuries. The hip is commonly implicated in greater functional knee valgus, but no studies have investigated the effects of hip taping on running kinematics. The present study investigated whether or not hip taping altered hip and knee kinematics compared to sham and no taping in female runners demonstrating excessive functional knee valgus. Lower limb stance-phase kinematics were collected from 23 female runners using three-dimensional motion capture...
November 7, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30399646/predicted-equation-for-vo2-based-on-a-20-meter-multistage-shuttle-run-test-for-children
#5
Gisela Arsa, Fernanda Cordoba Lanza, Lucieli Teresa Cambri, Ednei Luiz Antonio, Neif Murad, Marco Túlio de Mello, Alexandra Alberto Santos, Paulo de Tarso Camillo de Carvalho, José Antonio Silva-Junior, Danilo Sales Bocalini, Barbara Sampaio Dias Martins Mansano, Paulo José Ferreira Tucci, Andrey Jorge Serra
This study compared maximum oxygen consumption (VO2 max) on a 20-meter multistage shuttle run test (20-Srt) with a cardiopulmonary exercise test (CPET) to determine a VO2 max prediction equation for a 20-Srt in children aged 6-10 years. Eighty healthy children performed the CPET on a treadmill, while the 20-Srt took place on a sports court. Heart rate (HR) was measured and the expired gases were continuously measured breath-by-breath using a portable gas analyzer. The VO2 max was lower (p<0.05) in CPET than 20-Srt for all, female, and male participants, respectively (46...
November 6, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30399645/evidence-for-a-role-of-actn3-r577x-polymorphism-in-football-player-s-career-progression
#6
Daniel Barbosa Coelho, Eduardo Mendonça Pimenta, Izinara Cruz Rosse, Bruno Magalhães de Castro, Lenice Kappes Becker, Emerson Cruz de Oliveira, Maria Raquel Santos Carvalho, Emerson Silami Garcia
The aim was to investigate a possible role of the ACTN3 R577X polymorphism in a Brazilian football player's career progression. 2 questions were formulated: 1. Does ACTN3 polymorphism affect the probability of an individual being a professional football player? 2. Does this polymorphism affect the progression of the athlete throughout his career? The study included 353 players from first division Brazilian football clubs in the following categories: under-14 (U-14), U-15, U-17, U-20, and professional (PRO)...
November 6, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30347415/synchronized-pedaling-with-martial-arts-improves-quality-of-life-of-women-with-breast-cancer
#7
Ana Navarro-Sanz, Alejandro Espejo-Reina, Maria Victoria Cerezo-Guzman, Juan F Fernandez-Ortega, Hector Meza-Leiva, Inmaculada Conejo-Tirado, Clara Santiago-Sanchez
Physical exercise improves the physical condition of women who have been undergone surgery for breast cancer. This study evaluated the effect of a new martial arts program that combined aerobic endurance and muscle strength exercises on improving upper limb function and aerobic performance of women who have undergone breast cancer surgery. Fifty-three women who had previously undergone breast cancer surgery with axillary lymph node dissection, radiotherapy and/or chemotherapy participated in the twelve-week program...
October 22, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30326529/hip-abductors-and-lumbar-lateral-flexors-act-as-energy-generators-in-running-single-leg-jumps
#8
Natsuki Sado, Shinsuke Yoshioka, Senshi Fukashiro
In humans, hip abductor and lumbar lateral flexor muscles are well-developed as side-to-side lumbopelvic stabilizers. We hypothesized that the hip abductors and lumbar lateral flexors act as energy generators during a running single-leg jump, although they are generally recognized as stabilizers. We collected kinematics and ground reaction force data in running single-leg jumps by 13 male high jumpers and calculated three-dimensional kinetic variables. Hip abduction and lumbosacral lateral flexion towards free leg side torques were exerted during almost the entire take-off phase, exerting positive power during the terminal 2/3 of the phase...
October 16, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30326528/association-between-physical-activity-level-and-pelvic-floor-muscle-variables-in-women
#9
Alice Carvalhais, Thuane Da Roza, Sofia Vilela, Renato Natal Jorge, Kari Bø
In order to investigate the potential impact of physical activity (PA) on pelvic floor muscle (PFM) function, a cross-sectional study was made to analyse the association between PA level and vaginal resting pressure (VRP) and PFM strength and endurance. Thirty-eight continent women and 20 women with stress urinary incontinence (SUI) aged 19 to 49 years were enrolled in the study. PFM variables were assessed by manometry. The PA level was assessed through the International Physical Activity Questionnaire - Short Form...
October 16, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30326527/altering-physical-activity-influences-insulin-responses-to-glucose-ingestion-in-healthy-adults
#10
Kyle L Timmerman, Kevin D Ballard, Gabrielle A Volk, Michael A Deal, Adam J Meisler, Jenna M Karrow, Alex P Good, Sandy T Reynolds
This study determined if varying physical activity (PA) the day prior to an oral glucose tolerance test (OGTT) differentially influenced postprandial glucose and insulin kinetics. Fifteen healthy, young adults participated in three OGTT trials the morning after performing 50% (LOW), 100% (HABITUAL), or 150% (HIGH) of their habitual PA (determined by 7-day pedometry). Trials were randomized and separated by at least 1-wk. For each OGTT trial, blood glucose and insulin were measured after an overnight fast and at 30-min intervals for 2 h following ingestion of the glucose beverage...
October 16, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30326526/biceps-tendon-changes-in-youth-softball-pitchers-following-an-acute-bout-of-pitching
#11
Jeff W Barfield, Hillary A Plummer, Adam W Anz, James R Andrews, Gretchen D Oliver
Because pitch counts do not exist for softball, pitchers may throw between 1200 and 1500 pitches over 3-day tournaments. With this workload, a common symptom among softball pitchers is anterior shoulder pain. The purpose of this study was to examine long-head biceps tendon (LHBT) changes in youth softball pitchers following an acute bout of pitching. Nineteen softball pitchers (11.89±1.2 years; 158.23±9.71 cm; 61.59±14.76 kg) participated. Images of the LHBT were obtained prior to and immediately following a simulated game protocol...
October 16, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30290374/associations-of-the-force-velocity-profile-with-isometric-strength-and-neuromuscular-factors
#12
Antonio Jesus Morales-Artacho, Amador García Ramos, Alejandro Pérez-Castilla, Paulino Padial, Javier Argüelles-Cienfuegos, Blanca de la Fuente, Belen Feriche
We aimed to explore relationships between the force-velocity (FV) profile and the isometric muscle torque performance during a knee extension task. The FV profile (force-intercept [F0 ], velocity-intercept [V0 ], maximum power [Pmax ], and FV slope) during the countermovement jump (CMJ) exercise and isometric maximum voluntary torque (MVIC) and explosive voluntary torque production were assessed in 43 participants. Electromyography (EMG) was recorded during the isometric assessments and resting muscle architecture measurements were also performed (quadriceps thickness, vastus lateralis pennation angle and fascicle length)...
October 5, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30290373/plasma-steroids-are-not-associated-with-resting-and-exercise-blood-pressure
#13
Zihong He, Tuomo Rankinen, Arthur S Leon, James Skinner, André Tchernof, Claude Bouchard
We investigated the associations between steroid hormones and resting and exercise blood pressure in the sedentary state and in response to an exercise program controlling for sex, body mass, ethnicity, age, oral contraceptives, hormone therapy, smoking and alcohol intake in subjects from the HERITAGE Family Study.: In the sedentary state, 267 men (28% Blacks) and 301 women (37% Blacks) were available, and 241 men and 254 women completed the exercise program. Fourteen steroid hormones and sex hormone-binding globulin concentrations were assayed in a fasted state...
October 5, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30290372/association-of-mct1-a1470t-polymorphism-rs1049434-with-forward-football-player-status
#14
Myosotis Massidda, Alberto Mendez-Villanueva, Valentina Ginevičienė, Patrizia Proia, Svitlana B Drozdovska, Victor Dosenko, Marco Scorcu, Aleksander Stula, Marek Sawczuk, Paweł Cięszczyk, Carla Maria Calò
The aim of this study was to investigate the association between the MCT1 (monocarboxylate transporter 1) A1470T polymorphism and positional roles in a large cohort of professional football players from five different countries. We compared genotype distributions of the MCT1 A1470T polymorphism between football players (n=694) and non-athlete controls (n=781) from Italy, Poland, Lithuania, Ukraine and Malta, and we analyzed the MCT1 genotype distributions with respect to the players' positions in the field (e...
October 5, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30290371/men-s-participation-and-performance-in-the-boston-marathon-from-1897-to-2017
#15
Beat Knechtle, Stefania Di Gangi, Christoph Alexander Rüst, Thomas Rosemann, Pantelis Theodoros Nikolaidis
This study examined men's participation and performance in the Boston Marathon. Data from all 368,940 official male finishers in the Boston Marathon from 1897 through 2017 were analyzed using different analyses and regression models for all runners, annual top hundred finishers, annual top ten finishers and annual winners. Effect of calendar year on race time was examined alone, in a uni-variable model, and together with country of origin and weather conditions (average air temperature and precipitation) in a multi-variable model...
October 5, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30227457/moderate-intensity-arm-cranking-exercise-may-not-improve-arterial-function-in-healthy-adult-men
#16
Hajime Miura, Miduki Ishikawa, Kenichi Deguchi
Endurance exercises, such as cycling or running, are useful for improving arterial function. However, people suffering from partial paralysis or arthritis are unable to perform these kinds of lower-limb exercises. In the present study, we explored the acute effect of upper-arm exercise on arterial stiffness in healthy men. Fourteen healthy adult men performed two experimental trials. The order of experiments was randomized between a 30-min arm-cranking exercise at 50% V̇O2max (A-trial) and a 30-min leg-cycling exercise at 50% V̇O2max (C-trial)...
September 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30227456/does-chronic-ankle-instability-influence-knee-biomechanics-of-females-during-inverted-surface-landings
#17
Yumeng Li, Jupil Ko, Marika Walker, Cathleen Brown, Julianne Schmidt, Seock-Ho Kim, Kathy Simpson
The primary purpose of the study was to determine whether atypical knee biomechanics are exhibited during landing on an inverted surface. A seven-camera motion analysis system and two force plates were used to collect lower extremity biomechanics from two groups of female participants: 21 subjects with chronic ankle instability (CAI) and 21 with pair-matched controls. Subjects performed ten landings onto inverted and flat platforms on the CAI/matched and non-test limbs, respectively. Knee and ankle joint angles, joint angular displacements, joint moments and eccentric work were calculated during the landing phase and/or at the initial contact...
September 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30396214/sports-medicine-international-open-recently-published
#18
(no author information available yet)
No abstract text is available yet for this article.
November 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30227458/peak-fat-oxidation-is-not-independently-related-to-ironman-performance-in-women
#19
Stine Dahl Vest, Jacob Frandsen, Steen Larsen, Flemming Dela, Jørn Wulff Helge
The aim of the present study was to investigate if peak fat oxidation rate (PFO) is related to Ironman performance in female athletes. Thirty-six female Ironman athletes (age: 34±1 yrs, [21-45 yrs.] SEM [Range]) with a BMI of 22.1±2.0 kg/m2 [18.8-28.4 kg/m2 ], a body fat percentage of 24.8±1.0% [9.0-37.0%] and a V̇O2 peak of 53.0±1.3 ml/min/kg [36.5-70.5 ml/min/kg] were tested in the laboratory prior to the Ironman Copenhagen 2017. Race time ranged from 9:17:07 to 15:23:48 with mean race time being 11:57:26 h:min:s (717 min)...
November 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30206918/wheelchair-skills-training-for-functional-activity-in-adults-with-cervical-spinal-cord-injury
#20
RANDOMIZED CONTROLLED TRIAL
Sang Seok Yeo, Jung Won Kwon
Wheelchair skills training can improve independent wheeled mobility for daily living activities as well as functional and social participation of adults with cervical spinal cord injury (C-SCI). The objective of this study was to examine the effectiveness of wheelchair skills training in improving both wheelchair skills and upper arm skilled performance in adults with C-SCI. In a randomized controlled study, 24 adults with tetraplegia were randomized and allocated to training group (n=13) or control group (n=11)...
November 2018: International Journal of Sports Medicine
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