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https://www.readbyqxmd.com/read/28731980/running-performance-nationality-sex-and-age-in-the-10-km-half-marathon-marathon-and-the-100-km-ultramarathon-iaaf-1999-2015
#1
Pantelis T Nikolaidis, Vincent O Onywera, Beat Knechtle
Nikolaidis PT, Onywera VO, and Knechtle B. Running performance, nationality, sex, and age in the 10-km, half-marathon, marathon, and the 100-km ultramarathon IAAF 1999-2015. J Strength Cond Res 31(8): 2189-2207, 2017-The aim of this study was to examine the performance of the world's best runners in the 10-km, half-marathon, marathon, and 100-km races by age, sex, and nationality during 1999-2015, using data from the International Association of Athletics Federations (IAAF). A total of 38,895 runners (17,136 women and 21,759 men) were evaluated, with 2,594 (1,360 women and 1,234 men) in the 10-km; 11,595 (5,225 women and 6,370 men) in the half-marathon; 23,973 (10,208 women and 13,765 men) in the marathon; and 733 (343 women and 390 men) in 100-km events...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28729707/status-stress-and-performance-in-track-and-field-athletes-during-the-european-games-in-baku-azerbaijan
#2
Benjamin Siart, Alfred Nimmerichter, Claudia Vidotto, Bernard Wallner
This study analyzes the relationship between salivary cortisol and testosterone levels and performance in track and field athletes. In addition, we analyzed the influence of status among athletes (measured based on previous athletic achievement) on hormone levels. Nineteen members of the Austrian track and field team (eleven males, eight females, 25.9 ± 3.9 years of age, 74.9 ± 20.1 kg, and 179.3 ± 10 cm) participated in this study. Data was collected during the European Games in Baku. Athletes delivered saliva samples at various time-points including morning samples and samples directly before and after the competition...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728196/-a-19-year-old-female-athlete-with-an-abnormal-ecg
#3
Lothar Faber, Frank van Buuren, Klaus Peter Mellwig, Wolfgang Burchert, Dieter Horstkotte
No abstract text is available yet for this article.
July 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28727505/opportunities-and-benefits-for-powerchair-users-through-power-soccer
#4
Michael S Jeffress, William J Brown
Power soccer (or powerchair football), the first competitive team sport for users of motorized wheelchairs, is receiving increased attention among people with disabilities, healthcare professionals, and academics. The present study provides a qualitative analysis of the experiences of 34 American power soccer athletes. Participant observation and in-depth interviews with 11 female and 23 male athletes were conducted between 2007 and 2013. Results indicate that involvement in power soccer provides participants with an increased sense of empowerment, acquisition of social capital, and psychosocial benefits, including a deep satisfaction of the desire to participate in competitive sports and an opportunity to be independent...
July 2017: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/28725316/post-prandial-plasma-glucose-less-than-or-equal-to-70-mg-dl-is-not-uncommon-in-young-japanese-women
#5
Ayaka Tsuboi, Mika Takeuchi, Kaori Kitaoka, Satomi Minato, Miki Kurata, Tsutomu Kazumi, Keisuke Fukuo
BACKGROUND: Post-breakfast/post-challenge plasma glucose (PG) concentrations were studied less in young normal weight Japanese women. We addressed these issues. METHODS: Two separate groups of female collegiate athletes and female untrained students underwent either a standardized meal test or a standard 75-g oral glucose tolerance test, but not both. Frequency of women whose post-breakfast/post-load PG fell to 70 mg/dL or lower (termed as low glycemia) was compared between athletes and non-athletes, who also underwent measurements of serum adipokines, markers of insulin resistance and inflammation and dual-energy X-ray absorptiometry...
August 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28723842/reduced-neuromuscular-performance-in-amenorrheic-elite-endurance-athletes
#6
Åsa B Tornberg, Anna Melin, Fiona Manderson Koivula, Anders Johansson, Sven Skouby, Jens Faber, Anders Sjödin
INTRODUCTION: Secondary functional hypothalamic amenorrhea (SFHA) is common among female athletes, especially in weight-sensitive sports. The aim of this study was to investigate the link between SFHA and neuromuscular performance in elite endurance athletes. METHODS: Sixteen eumenorrheic (EUM) and 14 SFHA athletes from national teams and competitive clubs participated. Methods included gynecological examination; body composition (DXA);; resting metabolic rate and work efficiency; exercise capacity; knee muscular strength (KMS) and knee muscular endurance (KME); reaction time (RT); blood sampling performed on the 3rd-5th day of the menstrual cycle, and 7-day assessment of energy availability...
July 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28723822/biomechanical-differences-in-female-basketball-and-soccer-players-during-multi-directional-jump-landings
#7
Jeffrey B Taylor, Kevin R Ford, Randy J Schmitz, Scott E Ross, Terry A Ackerman, Sandra J Shultz
Anterior cruciate ligament injury prevention programs are less successful in basketball than soccer and may be due to distinct movement strategies that these athletes develop from sport-specific training. The purpose of this study was to identify biomechanical differences between female basketball and soccer players during multi-directional jump landings. Lower extremity biomechanics of eighty-nine female athletes who played competitive basketball (n=40) or soccer (n=49) at the middle- or high-school level were analyzed with three-dimensional motion analysis during a drop vertical jump (DVJ), double- (SAG-DL) and single-leg forward jump (SAG-SL), and double- (FRONT-DL) and single-leg (FRONT-SL) lateral jump...
July 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28719752/return-to-sport-after-shoulder-arthroplasty-in-recreational-athletes-a-systematic-review-and-meta-analysis
#8
Florence Aim, Jean-David Werthel, Julien Deranlot, Marie Vigan, Geoffroy Nourissat
BACKGROUND: One of the most frequent demands from patients after shoulder replacement surgery is to return to sport. PURPOSE: To determine the rate of return to sport after shoulder arthroplasty (total shoulder arthroplasty, reverse shoulder arthroplasty, hemiarthroplasty) in recreational athletes. STUDY DESIGN: Meta-analysis and systematic review. METHODS: The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines were followed to perform this systematic review and meta-analysis of the results in the literature as well as the presentation of results...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28719342/a-pilot-study-for-determination-of-anxiety-related-slc6a4-promoter-s-and-l-alleles-in-healthy-turkish-athletes
#9
A Corak, S Kapici, C Sercan, O Akkoç, K Ulucan
We aimed to analyze the allelic distribution of solute carrier family-6 member-4 promoter region in Turkish athletes. Recent studies showed the association of lesser expressing "S" allele with anxiety. Genotype percentages for LL, LS and SS genotypes were found as 46, 35 and 19, respectively. 38% of the males had LL, %38 had LS and 24% had SS genotypes. Percentages of LL, LS and SS genotypes were 54, 31 and 15 in females, respectively. 15 (58%) male and 18 (69%) females had L, 11 (42%) male and 8 (31%) females had S alleles...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28717619/comparison-of-dynamic-postural-stability-scores-between-athletes-with-and-without-chronic-ankle-instability-during-lateral-jump-landing
#10
Zeinab Shiravi, Azadeh Shadmehr, Saeed Talebian Moghadam, Behrouz Attarbashi Moghadam
BACKGROUNDS: Many ankle injuries occur while participating in sports that require jumping and landing such as basketball, volleyball and soccer. Most recent studies have investigated dynamic postural stability of patients with chronic ankle instability after landing from a forward jump. The present study aimed to investigate the dynamic postural stability of the athletes who suffer from chronic ankle sprain while landing from a lateral jump. METHODS: Twelve athletes with self-reported unilateral chronic ankle instability (4 females and 8 males) and 12 matched controls (3 females and 9 males) voluntarily participated in the study...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28717612/intratendinous-tears-of-the-achilles-tendon-a-new-pathology-analysis-of-a-large-4-year-cohort
#11
Otto Chan, Sarah Morton, Mel Pritchard, Tina Parkes, Peter Malliaras, Tom Crisp, Nat Padhiar, Nicola Maffulli, John King, Dylan Morrissey
BACKGROUND: Achillodynia is common and includes Achilles tendinopathy, partial Achilles tears and Achilles tendon ruptures. However, we believe an additional pathology should be considered for Achillodynia differentials - the intratendinous tear (ITT). METHODS: Examinations of 740 achillodynic patients in one specialist centre were reviewed. ITTs were defined as a clearly visualised echopoor area situated centrally and extending to, but not through the tendon periphery, with pain on palpation and no clinical findings consistent with Achilles rupture...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28713471/assessment-of-specificity-of-the-badcamp-agility-test-for-badminton-players
#12
Luiz de França Bahia Loureiro, Mário Oliveira Costa Dias, Felipe Couto Cremasco, Maicon Guimarães da Silva, Paulo Barbosa de Freitas
The Badcamp agility test was created to evaluate agility of badminton players. The Badcamp is a valid and reliable test, however, a doubt about the need for the use of this test exists as simpler tests could provide similar information about agility in badminton players. Thus, the aim of this study was to examine the specificity of the Badcamp, comparing the performance of badminton players and athletes from other sports in the Badcamp and the shuttle run agility test (SRAT). Sixty-four young male and female athletes aged between 14 and 16 years participated in the study...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28713458/trunk-strength-characteristics-of-elite-alpine-skiers-a-comparison-with-physically-active-controls
#13
Carolin Hildebrandt, Lisa Müller, Christian Heisse, Christian Raschner
Core muscle imbalances and weak trunk strength are relevant for injury prevention and performance. Information regarding core strength requirements and ideal flexion/extension ratios in alpine skiing is limited. We aimed to compare trunk strength capacities in elite alpine skiers with those of a matched control group. The concentric maximal trunk flexion and extension of 109 elite skiers and 47 active controls were measured at 150°/s in a ballistic mode using the CON-TREX® TP 1000 test system. The relative flexion peak torque was higher in male ski racers (p = 0...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28713454/balance-basic-anthropometrics-and-performance-in-young-alpine-skiers-longitudinal-analysis-of-the-associations-during-two-competitive-seasons
#14
Blaz Lesnik, Damir Sekulic, Matej Supej, Michael R Esco, Milan Zvan
Balance is hypothesized to be important in alpine skiing, while it is known that balance depends on anthropometric indices. The aim of this investigation was to explore the association between balance, anthropometrics and skiing-results over two competitive seasons among youth alpine-skiers. Eighty-one skiers (40 females) participated in this study. The participants were tested twice over two competitive seasons: when they were 12-13 years old (U14) and when they were 14-15 years old (U16). The variables consisted of anthropometrics (body height and body mass) and three balance indexes (medio-lateral-, anterio-posterior- and overall-stability-index)...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28712544/the-effect-of-leg-dominance-and-landing-height-on-acl-loading-among-female-athletes
#15
Hossein Mokhtarzadeh, Katie Ewing, Ina Janssen, Chen-Hua Yeow, Nicholas Brown, Peter Vee Sin Lee
Female athletes are more prone to anterior cruciate ligament (ACL) injury. A neuromuscular imbalance called leg dominance may provide a biomechanical explanation. Therefore, the purpose of this study was to compare the side-to-side lower limb differences in movement patterns, muscle forces and ACL forces during a single-leg drop-landing task from two different heights. We hypothesized that there will be significant differences in lower limb movement patterns (kinematics), muscle forces and ACL loading between the dominant and non-dominant limbs...
July 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28711608/do-anabolic-androgenic-steroids-have-performance-enhancing-effects-in-female-athletes
#16
REVIEW
Grace Huang, Shehzad Basaria
Doping with anabolic androgenic steroids (AAS) is common among both male and female athletes and is a growing public health problem. Review of historical data of systematic state-sponsored doping programs implemented by the German Democratic Republic in elite female athletes and from the clinical trials of testosterone administration in non-athlete women suggests that AAS have ergogenic effects in women. The use of AAS in female athletes has been associated with adverse effects that include acne, hirsutism, deepening of the voice and menstrual disturbances; life-threatening adverse effects such as cardiac arrhythmias and sudden death have also been reported...
July 12, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28709155/variable-accuracy-of-wearable-heart-rate-monitors-during-aerobic-exercise
#17
Stephen Gillinov, Muhammad Etiwy, Robert Wang, Gordon Blackburn, Dermot Phelan, A Marc Gillinov, Penny Houghtaling, Hoda Javadikasgari, Milind Y Desai
PURPOSE: Athletes and members of the public increasingly rely on wearable HR monitors to guide physical activity and training. The accuracy of newer, optically based monitors is unconfirmed. We sought to assess the accuracy of five optically based HR monitors during various types of aerobic exercise. METHODS: Fifty healthy adult volunteers (mean ± SD age = 38 ± 12 yr, 54% female) completed exercise protocols on a treadmill, a stationary bicycle, and an elliptical trainer (±arm movement)...
August 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28709154/contributions-to-leg-stiffness-in-high-compared-with-low-arched-athletes
#18
Douglas W Powell, Max R Paquette, D S Blaise Williams
PURPOSE: High-arched (HA) athletes exhibit greater lower extremity stiffness during functional tasks than low-arched (LA) athletes. The contributions of skeletal and muscular structures to stiffness may underlie the distinct injury patterns observed in these athletes. The purpose of this study was to compare skeletal and muscular contributions to leg stiffness in HA and LA athletes during running and landing tasks. METHODS: Ten HA and 10 LA female athletes performed five overground running trials at a self-selected pace and five step off bilateral landing trials from a height of 30 cm...
August 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28708425/reference-values-for-the-pediatric-quality-of-life-inventory-and-the-multidimensional-fatigue-scale-in-adolescent-athletes-by-sport-and-sex
#19
Alison R Snyder Valier, Cailee E Welch Bacon, R Curtis Bay, Eileen Molzen, Kenneth C Lam, Tamara C Valovich McLeod
BACKGROUND: Effective use of patient-rated outcome measures to facilitate optimal patient care requires an understanding of the reference values of these measures within the population of interest. Little is known about reference values for commonly used patient-rated outcome measures in adolescent athletes. PURPOSE: To determine reference values for the Pediatric Quality of Life Inventory (PedsQL) and the Multidimensional Fatigue Scale (MFS) in adolescent athletes by sport and sex...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28708420/dose-response-effect-of-tualang-honey-on-postprandial-antioxidant-activity-and-oxidative-stress-in-female-athletes-a-pilot-study
#20
Nur Syamsina Ahmad, Azlina Abdul Aziz, Kin Weng Kong, Mohamad Shariff A Hamid, Jadeera Phaik Geok Cheong, Sareena Hanim Hamzah
OBJECTIVES: Tualang honey (TH) contains antioxidants such as ascorbic acid, phenolic acids, and flavonoids that may be protective against oxidative stress of exercise. The aim of this study was to examine the postprandial antioxidant activity and oxidative stress after ingestion of high and low dosages of TH in female athletes. MATERIALS AND METHODS: Twenty female athletes (aged 21.3 [2.1] years; body weight [BW] 54.1 [5.7] kg) were randomly assigned into two groups and consumed either 1...
July 14, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
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