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https://www.readbyqxmd.com/read/28641058/acute-kinematics-changes-in-marathon-runners-using-different-footwear
#1
Tania Socorro Amorim Soares, Camila Fonseca de Oliveira, Federico Pizzuto, Rui Manuel Garganta, João Paulo Vila-Boas, Mario Casimiro da Anunciação Paiva
The effects of running with or without shoes on injury prevention have been extensively studied, and several investigations have assessed biomechanical differences between them. However, findings are not consensual and further insights on biomechanical load associated with differently shod or barefoot conditions may be needed. This study aimed to observe if habitually shod marathon runners show acute alterations when running barefoot or with minimalist shoes, and to determine whether the running kinematical adaptations of wearing minimalist shoes were similar to barefoot running...
June 22, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28640715/runner-up-2017
#2
Natalie Welsh
No abstract text is available yet for this article.
June 22, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28636434/selective-breeding-and-short-term-access-to-a-running-wheel-alter-stride-characteristics-in-house-mice
#3
Gerald C Claghorn, Zoe Thompson, Jarren C Kay, Genesis Ordonez, Thomas G Hampton, Theodore Garland
Postural and kinematic aspects of running may have evolved to support high runner (HR) mice to run approximately threefold farther than control mice. Mice from four replicate HR lines selectively bred for high levels of voluntary wheel running show many differences in locomotor behavior and morphology as compared with four nonselected control (C) lines. We hypothesized that HR mice would show stride alterations that have coadapted with locomotor behavior, morphology, and physiology. More specifically, we predicted that HR mice would have stride characteristics that differed from those of C mice in ways that parallel some of the adaptations seen in highly cursorial animals...
September 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28632060/the-collision-forces-and-lower-extremity-inter-joint-coordination-during-running
#4
Li-I Wang, Chin-Yi Gu, I-Lin Wang, Sheng-Wun Siao, Szu-Ting Chen
The purpose of this study was to compare the lower extremity inter-joint coordination of different collision forces runners during running braking phase. A dynamical system approach was used to analyse the inter-joint coordination parameters. Data were collected with six infra-red cameras and two force plates. According to the impact peak of the vertical ground reaction force, twenty habitually rearfoot-strike runners were categorised into three groups: high collision forces runners (HF group, n = 8), medium collision forces runners (MF group, n = 5), and low collision forces runners (LF group, n = 7)...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28630571/predictive-variables-of-half-marathon-performance-for-male-runners
#5
Josué Gómez-Molina, Ana Ogueta-Alday, Jesus Camara, Christoper Stickley, José A Rodríguez-Marroyo, Juan García-López
The aims of this study were to establish and validate various predictive equations of half-marathon performance. Seventy-eight half-marathon male runners participated in two different phases. Phase 1 (n = 48) was used to establish the equations for estimating half-marathon performance, and Phase 2 (n = 30) to validate these equations. Apart from half-marathon performance, training-related and anthropometric variables were recorded, and an incremental test on a treadmill was performed, in which physiological (VO2max, speed at the anaerobic threshold, peak speed) and biomechanical variables (contact and flight times, step length and step rate) were registered...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28628396/differential-in-maximal-aerobic-capacity-by-sex-in-collegiate-endurance-athletes-consuming-a-marginally-low-carbohydrate-diet
#6
Marissa N Baranauskas, Brian Miller, Jordan T Olson, Michelle Boltz, Laura Richardson, Matthew Juravich, Ronald Otterstetter
PURPOSE: Although current sports nutrition recommendations advocate for a high carbohydrate (CHO) intake among endurance athletes, recent research has suggested that training with low CHO availability may augment adaptations to aerobic training. The purpose of this study was to observe the dietary habits of collegiate distance runners and to investigate the effects of habitual CHO intake on aerobic performance [VO2max(post)] during a competitive season. METHODS: During an 8-week trial period, 12 (N = 12) collegiate track athletes recorded their self-selected dietary intake via 24-hour recall...
June 19, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28626333/peripheral-circulation-indicators-in-veteran-trail-runners
#7
Alexander Bolotin, Vladislav Bakayev
[Purpose] Competitive sport places strict demands on the cardiovascular systems of veteran trail runners. Our research objective was to evaluate the dynamics of microcirculation parameters of veteran runners in hypoxic and mid-altitude conditions. [Subjects and Methods] Seven male runners from Russia and Italy between the ages of 50 and 60 years were examined whilst competing at mid-altitude (1,500-2,000 m above sea level). The same runners were examined in a simulated mid-altitude hypoxic environment, which was a hypoxic chamber with 16% oxygen concentration, for 720 minutes...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28624711/does-the-powers%C3%A2-strap-influence-the-lower-limb-biomechanics-during-running
#8
Henrike Greuel, Lee Herrington, Anmin Liu, Richard K Jones
Previous research has reported a prevalence of running related injuries in 25.9% to 72% of all runners. A greater hip internal rotation and adduction during the stance phase in running has been associated with many running related injuries, such as patellofemoral pain. Researchers in the USA designed a treatment device 'the Powers™ strap' to facilitate an external rotation of the femur and to thereby control abnormal hip and knee motion during leisure and sport activities. However, to date no literature exists to demonstrate whether the Powers™ strap is able to reduce hip internal rotation during running...
June 3, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28621949/cyclotides-from-the-indian-medicinal-plant-viola-odorata-banafsha-identification-and-characterization
#9
M Narayani, Anju Chadha, Smita Srivastava
Cyclotides are cyclic cystine knotted macrocyclic plant peptides that have several promising applications. This study was undertaken to detect and identify known and new cyclotides in Viola odorata, a commercially important medicinal plant, from three geographical locations in India. The number of cyclotides in the plant varied with the tissue (leaves, petioles, flowers, runners, and roots) and with geographical locations in India. Using liquid chromatography coupled to Fourier transform mass spectrometry (FTMS), 166 cyclotide-like masses were observed to display cyclotide-diagnostic mass shifts following reduction, alkylation, and digestion, and 71 of these were positively identified based on automated spectrum matching...
June 16, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28618309/exertion-and-pain-do-not-alter-coordination-variability-in-runners-with-iliotibial-band-syndrome
#10
Jocelyn F Hafer, Allison M Brown, Katherine A Boyer
BACKGROUND: Iliotibial band syndrome is a common overuse running injury which results in altered mechanics. While injuries alter discrete mechanics, they may also cause a change in coordination variability, the stride-to-stride organization of runners' movement patterns. Uninjured and injured runners may experience a change in coordination variability during a run to exertion due to fatigue, pain, or a combination of these factors. The aim of the current study was to determine if runners with iliotibial band syndrome and uninjured runners display different segment coordination variability across the course of a run to exertion...
June 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28617203/effects-of-increased-participation-on-veteran-running-performance
#11
Bernard Cerutti, Bengt Kayser
Contrary to elite performance that is approaching an asymptote, recent analyses suggested a trend for improvement in veterans. This might be attributable to a disproportionate increase in older age-group participation. We extracted 26 years (1987-2012) of men's results of a running event in Switzerland, "La Course de l'Escalade" (7.25 km). We investigated trends in performance by five-year age-groups, taking the 10, 20, 30, and 50 fastest in each group, and then the 1(st), 5(th), and 10(th) percentiles. Taking the 10, 20, 30 or 50 fastest runners there was a trend for improvement ranging from 0...
June 15, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28611674/is-marathon-training-harder-than-the-ironman-training-an-eco-method-comparison
#12
Jonathan Esteve-Lanao, Diego Moreno-Pérez, Claudia A Cardona, Eneko Larumbe-Zabala, Iker Muñoz, Sergio Sellés, Roberto Cejuela
Purpose: To compare the absolute and relative training load of the Marathon (42k) and the Ironman (IM) training in recreational trained athletes. Methods: Fifteen Marathoners and Fifteen Triathletes participated in the study. Their performance level was the same relative to the sex's absolute winner at the race. No differences were presented neither in age, nor in body weight, height, BMI, running VO2max max, or endurance training experience (p > 0.05). They all trained systematically for their respective event (IM or 42k)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28611162/a-large-chronic-pericardial-effusion-in-an-ultramarathon-runner-with-anti-ccp-positive-rheumatoid-arthritis
#13
Thomas J McClelland, Rose Penfold, Stefan Kluzek, Navraj S Nagra
Pericardial effusions arise as an extra-articular manifestation of rheumatoid arthritis (RA). Pericardial effusions are often asymptomatic, particularly in the early phase, but patients are at risk of cardiac tamponade as the effusion progresses. We discuss the case of a 40-year-old male ultramarathon runner with RA who presented with mild pleuritic chest pain and exertional dyspnoea after a recent long-haul flight. Despite a relative tachycardia, his observations were otherwise unremarkable. His blood tests revealed a C-reactive protein (CRP) of 86 mg/L and an anti-cyclic citrullinated peptide (anti-CCP) titre of 360 units/mL...
June 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28610181/resolving-the-status-of-i-pyriporoides-i-and-i-daisyella-i-bryozoa-cheilostomata-with-the-systematics-of-some-additional-taxa-of-calloporoidea-having-an-ooecial-heterozooid
#14
Dennis P Gordon, Paul D Taylor
Based on the examination of type and newly discovered specimens, the scope of the calloporid genus Pyriporoides Hayward & Thorpe, 1989 is expanded to include Daisyella Gordon, 1989. All species of Pyriporoides have colonies of branching uniserial runners and acleithral ovicells that are borne on and/or develop concurrently with a distal heterozooid, not the distal autozooid. The ooecial heterozooid is usually kenozooidal but can be avicularian. Correlated characters include, inter alia: a raised granular rim that encloses a generally well-developed cryptocystal shelf, and a longitudinally elongate opesia that may be constricted and asymmetrical...
March 10, 2017: Zootaxa
https://www.readbyqxmd.com/read/28605265/associations-between-individual-lower-limb-muscle-volumes-and-100-m-sprint-time-in-male-sprinters
#15
Norihide Sugisaki, Kai Kobayashi, Hiroyasu Tsuchie, Hiroaki Kanehisa
PURPOSE: To elucidate the relationship between the muscularity of individual lower limb muscles and 100-m race time (t100) in young adult male sprinters. METHODS: A total of 31 young adult male sprinters took part in this study (age, 19.9 ± 1.4 years; height, 173.5 ± 4.6 cm; body mass, 67.0 ± 4.9 kg; t100, 10.23-11.71 s). The cross-sectional images from the origin to insertion of 12 lower limb muscles were obtained with a magnetic resonance imaging (MRI) system...
June 12, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28604051/safe-or-out-does-the-location-of-attention-affect-judgments-at-first-base-in-baseball
#16
Ralph S Redden, Ghislain d'Entremont, Raymond M Klein
Titchener's law of prior entry states that attended stimuli are perceived before unattended stimuli. Prior entry effects measured with visual stimuli have been generated with both endogenous and exogenous attentional deployment (e.g., by Shore, Spence, & Klein, 2001). In theory, the endogenous form of prior entry may have implications for baseball umpire judgments. Conventionally, umpires are instructed to first attend to the ball when it is hit into play; however, where they attend at the imperative instant of the play at first base can vary between individuals and across scenarios...
June 2017: Canadian Journal of Experimental Psychology, Revue Canadienne de Psychologie Expérimentale
https://www.readbyqxmd.com/read/28599003/measurement-agreement-between-a-newly-developed-sensing-insole-and-traditional-laboratory-based-method-for-footstrike-pattern-detection-in-runners
#17
Roy T H Cheung, Winko W An, Ivan P H Au, Janet H Zhang, Zoe Y S Chan, Alfred Man, Fannie O Y Lau, Melody K Y Lam, K K Lau, C Y Leung, N W Tsang, Louis K Y Sze, Gilbert W K Lam
This study introduced a novel but simple method to continuously measure footstrike patterns in runners using inexpensive force sensors. Two force sensing resistors were firmly affixed at the heel and second toe of both insoles to collect the time signal of foot contact. A total of 109 healthy young adults (42 males and 67 females) were recruited in this study. They ran on an instrumented treadmill at 0°, +10°, and -10° inclinations and attempted rearfoot, midfoot, and forefoot landings using real time visual biofeedback...
2017: PloS One
https://www.readbyqxmd.com/read/28595134/fatigue-induced-dissociation-between-rate-of-force-development-and-maximal-force-across-repeated-rapid-contractions
#18
Gennaro Boccia, Davide Dardanello, Cantor Tarperi, Luca Festa, Antonio La Torre, Barbara Pellegrini, Federico Schena, Alberto Rainoldi
We examined whether the presence of fatigue induced by prolonged running influenced the time courses of force generating capacities throughout a series of intermittent rapid contractions. Thirteen male amateur runners performed a set of 15 intermittent isometric rapid contractions of the knee extensor muscles, (3s/5s on/off) the day before (PRE) and immediately after (POST) a half marathon. The maximal voluntary contraction force, rate of force development (RFDpeak), and their ratio (relative RFDpeak) were calculated...
June 5, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28593099/do-general-medical-practitioners-examine-injured-runners
#19
S Videbaek, A V Jensen, S Rasmussen, R O Nielsen
BACKGROUND: General Medical Practitioners (GMP) in Denmark perform clinical examinations of patients with musculoskeletal pain. However, the prevalence proportion of examinations caused by running-related injuries remains unknown. PURPOSE: The primary purpose of the present study was to estimate the prevalence proportion of consultations in general medical practice caused by running-related injuries. The secondary purpose was to estimate the prevalence proportion of injured runners, who consult their GMP, that are referred to additional examinations or treatments...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28587488/running-multiple-marathons-is-not-a-risk-factor-for-premature-subclinical-vascular-impairment
#20
Axel Pressler, Christiane Suchy, Tasja Friedrichs, Sophia Dallinger, Viola Grabs, Bernhard Haller, Martin Halle, Johannes Scherr
Background In contrast to the well-accepted benefits of moderate exercise, recent research has suggested potential deleterious effects of repeated marathon running on the cardiovascular system. We thus performed a comprehensive analysis of markers of subclinical vascular damage in a cohort of runners having finished multiple marathon races successfully. Design This was a prospective, observational study. Methods A total of 97 healthy male Munich marathon participants (mean age 44 ± 10 years) underwent detailed training history, cardiopulmonary exercise testing for assessment of peak oxygen uptake, ultrasound for assessment of intima-media-thickness as well as non-invasive assessments of ankle-brachial index, augmentation index, pulse wave velocity and reactive hyperaemia index...
January 1, 2017: European Journal of Preventive Cardiology
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