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https://www.readbyqxmd.com/read/27918678/gait-asymmetry-during-400-to-1000-m-high-intensity-track-running-in-relation-to-injury-history
#1
Rahel Ammann, Wolfgang Taube, Thomas Wyss
PURPOSE: The aim of the present study was to quantify gait asymmetry in well-trained runners, with and without previous injuries during interval training sessions incorporating different distances. METHODS: Twelve well-trained runners participated in eight high-intensity interval training sessions on a synthetic track over a 4-week period. The training consisted of 10 × 400 m, 8 × 600 m, 7 × 800 m, and 6 × 1000 m running. Using an inertial measurement unit, the ground contact time (GCT) of every step was recorded...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918673/predictive-indicators-of-overuse-injuries-in-adolescent-endurance-athletes
#2
Daniel Martínez-Silván, Jaime Díaz-Ocejo, Andrew Murray
PURPOSE: To analyse the influence of training exposure and the utility of self-report questionnaires on predicting overuse injuries in adolescent endurance athletes. METHODS: 5 adolescent male endurance athletes (15.7 ± 1.4 yr) from a full-time sports academy answered 2 questionnaires (Recovery Cue; RC-q & Oslo Sports Trauma Research questionnaire; OSTRC-q) on a weekly basis for one season (37 wks) in order to detect (1) signs of overtraining and under-recovery (RC-q) and (2) early symptoms of lower limb injuries (OSTRC-q)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27917543/is-motivation-for-marathon-a-protective-factor-or-a-risk-factor-of-injury
#3
A Chalabaev, R Radel, I Ben Mahmoud, B Massiera, T Deroche, F d'Arripe-Longueville
This research investigated whether and how self-determined motivation predicts perceived susceptibility to injury during competition (marathon). Two correlational studies including 378 (Study 1) and 339 (Study 2) marathon runners were conducted. Participants filled out a questionnaire the day before the race measuring self-determined motivation, perceived susceptibilities to marathon-related injury and to keep running through pain, and control variables. Study 1 showed that self-determined motivation was negatively related to perceived susceptibility to marathon-related injury...
December 5, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27916891/comparison-of-site-specific-bone-mineral-densities-between-endurance-runners-and-sprinters-in-adolescent-women
#4
Aoi Ikedo, Aya Ishibashi, Saori Matsumiya, Aya Kaizaki, Kumiko Ebi, Satoshi Fujita
We aimed to compare site-specific bone mineral densities (BMDs) between adolescent endurance runners and sprinters and examine the relationship of fat-free mass (FFM) and nutrient intake on BMD. In this cross-sectional study, 37 adolescent female endurance runners and sprinters (16.1 ± 0.8 years) were recruited. BMD and FFM were assessed by dual-energy X-ray absorptiometry. Nutrient intake and menstrual state were evaluated by questionnaires. After adjusting for covariates, spine and total bone less head (TBLH) BMDs were significantly higher in sprinters than endurance runners (TBLH, 1...
November 30, 2016: Nutrients
https://www.readbyqxmd.com/read/27912252/impact-of-stretching-on-the-performance-and-injury-risk-of-long-distance-runners
#5
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...
December 2, 2016: Research in Sports Medicine
https://www.readbyqxmd.com/read/27911915/marathon-race-affects-neutrophil-surface-molecules-role-of-inflammatory-mediators
#6
Vinicius Coneglian Santos, Ana Paula Renno Sierra, Rodrigo Oliveira, Kim Guimarães Caçula, César Miguel Momesso, Fabio Takeo Sato, Maysa Braga Barros Silva, Heloisa Helena Oliveira, Maria Elizabeth Pereira Passos, Diego Ribeiro de Souza, Olivia Santos Gondim, Marino Benetti, Adriana Cristina Levada-Pires, Nabil Ghorayeb, Maria Augusta Peduti Dal Molin Kiss, Renata Gorjão, Tânia Cristina Pithon-Curi, Maria Fernanda Cury-Boaventura
The fatigue induced by marathon races was observed in terms of inflammatory and immunological outcomes. Neutrophil survival and activation are essential for inflammation resolution and contributes directly to the pathogenesis of many infectious and inflammatory conditions. The aim of this study was to investigate the effect of marathon races on surface molecules related to neutrophil adhesion and extrinsic apoptosis pathway and its association with inflammatory markers. We evaluated 23 trained male runners at the São Paulo International Marathon 2013...
2016: PloS One
https://www.readbyqxmd.com/read/27908664/preference-for-western-diet-coadapts-in-high-runner-mice-and-affects-voluntary-exercise-and-spontaneous-physical-activity-in-a-genotype-dependent-manner
#7
Wendy Acosta, Thomas H Meek, Heidi Schutz, Elizabeth M Dlugosz, Theodore Garland
Do animals evolve (coadapt) to choose diets that positively affect their performance abilities? We addressed this question from a microevolutionary perspective by examining preference for Western diet (WD: high in fat and sugar, but lower in protein) versus standard rodent chow in adults of both sexes from 4 lines of mice selectively bred for high levels of voluntary wheel running (High Runner or HR lines) and 4 non-selected control (C) lines. We also assessed whether food preference or substitution affects physical activity (wheel running and/or spontaneous physical activity [SPA] in the attached home cages)...
November 28, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27907069/16-weeks-of-progressive-barefoot-running-training-changes-impact-force-and-muscle-activation-in-habitual-shod-runners
#8
Ana Paula da Silva Azevedo, Bruno Mezêncio, Alberto Carlos Amadio, Julio Cerca Serrão
Short-term effects of barefoot and simulated barefoot running have been widely discussed in recent years. Consequences of adopting barefoot running for a long period, including as a training approach, still remain unknown. The present study evaluated the influence of 16 weeks of progressive barefoot running training on impact force and muscle activation in habitual shod runners. Six habitual shod runners (3 men and 3 women, 29.5 ± 7.3 years) were tested barefoot (BF) and shod (SH), before and after 16 weeks of progressive barefoot running training...
2016: PloS One
https://www.readbyqxmd.com/read/27901340/effects-of-a-trail-mountain-race-on-neuromuscular-performance-and-hydration-status-in-trained-runners
#9
Ernest Baiget, Javier Peña, Xantal Borràs, Toni Caparrós, José L López, Francesc Marin, Jordi Coma, Eduard Comerma
BACKGROUND: The aims of this study were (a) to examine the effects of a trail mountain race (TMR) on hydration status and neuromuscular performance of recreational trail runners and (b) to determine the relationship among these parameters, subject's characteristics and competitive performance. METHODS: 35 male recreational trail runners (age, 38.1 ± 9.5 years; height, 177.3 ± 5.8 cm; body mass, 73.8 ± 8.4 kg; mean ± SD) were assessed before and after a 21.1 km TMR...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27900880/associations-of-nicotinamide-n-methyltransferase-gene-single-nucleotide-polymorphisms-with-sport-performance-and-relative-maximal-oxygen-uptake
#10
Jiang-Hua Li, Wei Chen, Xiao-Juan Zhu, Ya-Jun Lin, Li-Qiang Qiu, Can-Xin Cai, Ya-Hui Wang, Qun Xiong, Fei Chen, Li-Hui Chen
To observe the associations between single nucleotide polymorphisms (SNPs) of nicotinamide N-methyltransferase (NNMT) gene and sport performance and to analyse genotype associations of the associated SNPs with sport performance and relative maximal oxygen uptake ([Formula: see text]). Participants were selected from 685 Chinese Han male college students. The completion times of a 1000-m run and a 50-m run were used to reflect sport performance, respectively. Nineteen tagSNPs were genotyped with Polymerase chain reaction-ligase detection reaction...
November 30, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27900173/how-accurate-are-the-wrist-based-heart-rate-monitors-during-walking-and-running-activities-are-they-accurate-enough
#11
Sarah E Stahl, Hyun-Sung An, Danae M Dinkel, John M Noble, Jung-Min Lee
BACKGROUND: Heart rate (HR) monitors are valuable devices for fitness-orientated individuals. There has been a vast influx of optical sensing blood flow monitors claiming to provide accurate HR during physical activities. These monitors are worn on the arm and wrist to detect HR with photoplethysmography (PPG) techniques. Little is known about the validity of these wearable activity trackers. AIM: Validate the Scosche Rhythm (SR), Mio Alpha (MA), Fitbit Charge HR (FH), Basis Peak (BP), Microsoft Band (MB), and TomTom Runner Cardio (TT) wireless HR monitors...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27893484/effects-of-pelvic-and-core-strength-training-on-high-school-cross-country-race-times
#12
Anne W Clark, Maggie K Goedeke, Rina Namvong, Derek E Rockwell, Bryan Jason Lehecka, Robert C Manske, Barbara S Smith
Effects of pelvic and core strength training on high school cross-country race times: A randomized control trial.There is only limited research examining the effect of pelvic and core strength training on running performance. Pelvic and core muscle fatigue is believed to contribute to excess motion along frontal and transverse planes which decreases efficiency in normal sagittal plane running motions. The purpose of this study was to determine if adding a six week pelvic and core strengthening program resulted in decreased race times in high school cross-country runners...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27891180/the-effect-of-foot-orthoses-with-forefoot-cushioning-or-metatarsal-pad-on-forefoot-peak-plantar-pressure-in-running
#13
Michaela Hähni, Anja Hirschmüller, Heiner Baur
BACKGROUND: Foot orthoses are frequently used in sports for the treatment of overuse complaints with sufficient evidence available for certain foot-related overuse pathologies like plantar fasciitis, rheumatoid arthritis and foot pain (e.g., metatarsalgia). One important aim is to reduce plantar pressure under prominent areas like metatarsal heads. For the forefoot region, mainly two common strategies exist: metatarsal pad (MP) and forefoot cushioning (FC). The aim of this study was to evaluate which of these orthosis concepts is superior in reducing plantar pressure in the forefoot during running...
2016: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/27886380/acceptability-and-preference-drivers-of-freshly-roasted-peanuts
#14
Shangci Wang, Koushik Adhikari, Yen-Con Hung
The objectives of this study were to determine and compare the sensory perceptions and aroma volatiles of 6 freshly roasted peanut samples and to explore the drivers of consumer acceptability. Normal-oleic Georgia 06G kernels (06G), high-oleic Georgia 13M kernels (13M), Georgia runner (mixed) in-shell (InR) & kernels (R), and Virginia (mixed) in-shell (InVA) & kernels (VA) were roasted to medium doneness for consumers, descriptive, and gas chromatography-mass spectroscopy (GC-MS) tests. For Virginia variety, InVA was preferred over VA...
November 25, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27885098/energy-costs-and-performance-of-transfemoral-amputees-and-non-amputees-during-walking-and-running-a-pilot-study
#15
Larry J Mengelkoch, Jason T Kahle, M Jason Highsmith
BACKGROUND: Limited information is available concerning the effects of prosthetic foot components on energy costs and ambulatory performance for transfemoral amputees. OBJECTIVES: Compare energy costs (VO2; gait economy) and ambulatory performance (self-selected walking speeds, self-selected running speeds, peak running speeds) differences during walking and running for transfemoral amputees and matched, non-amputee runners. STUDY DESIGN: Repeated measures...
November 24, 2016: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/27879166/sex-differences-in-release-of-cardiac-troponin-t-after-endurance-exercise
#16
Zhaowei Kong, Jinlei Nie, Hua Lin, Keith George, Gang Zhao, Haifeng Zhang, Tomas K Tong, Qingde Shi
CONTEXT: Post-exercise cardiac troponin release has been extensively described in athletic groups but little attention has been given to any role of sex in mediating this phenomnenon. OBJECTIVE: We compared the release of cardiac troponin T (cTnT) after endurance running in training-experience, biological-age and maturity-matched young male and female runners. MATERIALS AND METHODS: Nineteen male (training history: 2.3±1.0 yr; mean age: 16...
November 23, 2016: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/27878382/ultra-marathon-100%C3%A2-km-in-an-islet-transplanted-runner
#17
Roberto Codella, Michela Adamo, Paola Maffi, Lorenzo Piemonti, Antonio Secchi, Livio Luzi
No abstract text is available yet for this article.
November 23, 2016: Acta Diabetologica
https://www.readbyqxmd.com/read/27876459/local-and-widespread-hyperalgesia-in-female-runners-with-patellofemoral-pain-are-influenced-by-running-volume
#18
Marcella Ferraz Pazzinatto, Danilo de Oliveira Silva, Juliana Pradela, Maira Bergamaschi Coura, Christian Barton, Fábio Mícolis de Azevedo
OBJECTIVES: To compare pressure pain threshold (PPT) around the knee (local hyperalgesia) and at a site remote to the knee (widespread hyperalgesia) between female runners with and without patellofemoral pain (PFP); and to evaluate the relationship between running volume, self-reported knee function and PPT measures. DESIGN: Cross-sectional study. METHODS: Twenty female runners with PFP and twenty pain-free female runners participated in the study...
November 11, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27875453/integrating-mental-health-into-primary-care
#19
Amy M Collins
As part of its Raise the Voice campaign to showcase nurses who are key players in transforming health care, the American Academy of Nursing has identified nurses they call edge runners-"practical innovators who have led the way in bringing new thinking and new methods to a wide range of health care challenges." This is the seventh in AJN's series of profiles of these nursing innovators. Read and be proud of what nurses can accomplish.
December 2016: American Journal of Nursing
https://www.readbyqxmd.com/read/27875261/the-apparently-contradictory-energetics-of-hopping-and-running-the-counter-intuitive-effect-of-constraints-resolves-the-paradox
#20
Anne K Gutmann, John E A Bertram
Metabolic rate appears to increase with rate of force application for running. Leg function during ground contact is similar in hopping and running so one might expect that this relationship would hold for hopping as well. Surprisingly, metabolic rate appeared to decrease with increasing force rate for hopping. However, this paradox is the result of comparing different cross sections of the metabolic cost landscapes for hopping and running. The apparent relationship between metabolic rate and force rate observed in treadmill running is likely not a fundamental characteristic of muscle physiology, but a result of runners responding to speed constraints, i...
November 10, 2016: Journal of Experimental Biology
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