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https://www.readbyqxmd.com/read/29614001/relationships-between-habitual-cadence-footstrike-and-vertical-loadrates-in-runners
#1
Erin E Futrell, Steve T Jamison, Adam S Tenforde, Irene S Davis
Excessive vertical ground reaction force (VGRF) loadrates have been linked with running injuries. Increasing cadence (CAD) has been shown to reduce loadrates; however relationships between habitual cadence and loadrates across a population of runners have not been examined. PURPOSE: To examine the relationships between habitual running cadence and vertical loadrates in healthy and injured runners using habitual footstrike patterns. As CAD increased, we expected vertical loadrates would decrease...
April 2, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29599878/understanding-trail-runners-activity-on-online-community-forums-an-inductive-analysis-of-discussion-topics
#2
Nadège Rochat, Denis Hauw, Gaëlle Gür, Ludovic Seifert
Recreational trail runners often participate in online community forums where they can freely read posted messages, join discussions and/or introduce new discussion topics. This tool can enhance learning as runners connect with other trail runners and reflect on how they can better organize their own practice. Studying forum activity would provide greater insight into the relationship between field practice and dedicated forums. The aim of this study was therefore to detect the topics discussed online by trail runners in order to understand how they collectively look for solutions that help them adapt to issues that emerge during actual practice...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29576960/effect-of-fatigue-and-gender-on-kinematics-and-ground-reaction-forces-variables-in-recreational-runners
#3
Bruno Bazuelo-Ruiz, Juan V Durá-Gil, Nicolás Palomares, Enrique Medina, Salvador Llana-Belloch
The presence of fatigue has been shown to modify running biomechanics. Overall in terms of gender, women are at lower risk than men for sustaining running-related injuries, although it depends on the factors taken into account. One possible reason for these differences in the injury rate and location might be the dissimilar running patterns between men and women. The purpose of this study was to determine the effect of fatigue and gender on the kinematic and ground reaction forces (GRF) parameters in recreational runners...
2018: PeerJ
https://www.readbyqxmd.com/read/29570418/histological-and-thermometric-examination-of-soft-tissue-de-epithelialization-using-digitally-controlled-er-yag-laser-handpiece-an-ex-vivo-study
#4
Kinga Grzech-Leśniak, Jacek Matys, Kamil Jurczyszyn, Piotr Ziółkowski, Marzena Dominiak, Aldo Brugnera, Umberto Romeo
OBJECTIVE: The purpose of this study was histological and thermometric examination of soft tissue de-epithelialization using digitally controlled laser handpiece (DCLH) - X-Runner. BACKGROUND DATA: Commonly used techniques for de-epithelialization include scalpel, abrasion with diamond bur, or a combination of the two. Despite being simple, inexpensive and effective, these techniques are invasive and may produce unwanted side effects. It is important to look for alternative techniques using novel tools, which are minimally invasive and effective...
March 23, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29558239/variation-of-traditional-biomarkers-of-liver-injury-after-an-ultramarathon-at-altitude
#5
Jill N Tirabassi, Lucianne Olewinski, Morteza Khodaee
BACKGROUND: Significant elevations of traditional biomarkers of liver injury can occur as a result of running an ultramarathon. HYPOTHESIS: Traditional serum biomarker levels of liver injury will significantly increase as the result of participating in this 161-km race at altitude. STUDY DESIGN: Prospective cross-sectional study. LEVEL OF EVIDENCE: Level 3. METHODS: A total of 64 (before) and 83 (after) volunteer runners participated in a prospective observational field-based study at the Leadville 100 ultramarathon race...
March 1, 2018: Sports Health
https://www.readbyqxmd.com/read/29543108/upper-trunk-pelvis-coordination-during-running-using-the-continuous-relative-fourier-phase-method
#6
Yumeng Li, Rumit S Kakar, Marika A Walker, Li Guan, Kathy J Simpson
The upper trunk - pelvic coordination patterns used in running are not well understood. The purposes of our study are to (a) test the running speed effect on the upper trunk - pelvis axial rotation coordination; (b) present a step-by-step guide of the relative Fourier phase algorithm as well as some further issues to consider. Twenty healthy young adults were tested under three treadmill running speeds using a 3D motion capture system. The upper trunk and pelvic segmental angles in axial rotation were calculated and the coordination was quantified using the relative Fourier phase method...
March 15, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29529927/textured-insoles-reduce-vertical-loading-rate-and-increase-subjective-plantar-sensation-in-overground-running
#7
Michael Wilkinson, Alistair Ewen, Nicholas Caplan, David O'Leary, Neil Smith, Richard Stoneham, Lee Saxby
The effect of textured insoles on kinetics and kinematics of overground running was assessed. 16 male injury-free-recreational runners attended a single visit (age 23 ± 5 yrs; stature 1.78 ± 0.06 m; mass 72.6 ± 9.2 kg). Overground 15-m runs were completed in flat, canvas plimsolls both with and without textured insoles at self-selected velocity on an indoor track in an order that was balanced among participants. Average vertical loading rate and peak vertical force (Fpeak ) were captured by force platforms...
March 12, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29527322/run-clever-no-difference-in-risk-of-injury-when-comparing-progression-in-running-volume-and-running-intensity-in-recreational-runners-a-randomised-trial
#8
Daniel Ramskov, Sten Rasmussen, Henrik Sørensen, Erik Thorlund Parner, Martin Lind, Rasmus Oestergaard Nielsen
Background/aim: The Run Clever trial investigated if there was a difference in injury occurrence across two running schedules, focusing on progression in volume of running intensity (Sch-I) or in total running volume (Sch-V). It was hypothesised that 15% more runners with a focus on progression in volume of running intensity would sustain an injury compared with runners with a focus on progression in total running volume. Methods: Healthy recreational runners were included and randomly allocated to Sch-I or Sch-V...
2018: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29484865/-the-relationship-between-injuries-shoes-and-style-in-the-runner-s-population
#9
REVIEW
Jacob Shapira, Yaniv Keren, Nadav Rinott, Yaron Berkovich
We are now standing four decades after the 'running revolution' which occurred during the 70's of the previous century. Despite the developments that have occurred in medicine and the large budgets invested in the development of the sport's equipment, the runner's morbidity has not changed. In this article, we would like to review the changes in running that occurred throughout the years, as well as the common risk factors for running injuries. Furthermore, we would like to examine the scientific point of view regarding running shoes and running technique as risk factors for running injuries...
February 2018: Harefuah
https://www.readbyqxmd.com/read/29475152/relationship-between-rearfoot-tibia-and-femur-kinematics-in-runners-with-and-without-patellofemoral-pain
#10
Bruna Calazans Luz, Ana Flávia Dos Santos, Mariana Carvalho de Souza, Tatiana de Oliveira Sato, Deborah A Nawoczenski, Fábio Viadanna Serrão
BACKGROUND: Patellofemoral pain (PFP) is the most common running overuse injury. Excessive rearfoot eversion is commonly considered as a PFP risk factor and the relationship between ankle-foot complex movement and lower limb may be involved with this dysfunction. The purpose of this study was to evaluate the correlation between rearfoot eversion with tibia and femur kinematics in frontal and transverse planes during running in individuals with and without PFP. The secondary purpose was to compare the lower limb kinematics between runners with and without PFP...
March 2018: Gait & Posture
https://www.readbyqxmd.com/read/29430880/frequency-and-anatomical-distribution-of-magnetic-resonance-imaging-features-in-sacroiliac-joints-of-young-athletes-exploring-background-noise-towards-a-data-driven-definition-of-sacroiliitis-in-early-spondyloarthritis
#11
Ulrich Weber, Anne Grethe Jurik, Anna Zejden, Ejnar Larsen, Steen Hylgaard Jørgensen, Kaspar Rufibach, Christian Schioldan, Søren Schmidt-Olsen
OBJECTIVE: Low grade bone marrow edema (BME) was reported in the sacroiliac joints (SIJ) of 25% of healthy individuals and mechanical back pain patients, challenging the imaging discrimination from early spondyloarthritis (SpA). It is unknown whether stress injury in competition sports may trigger BME. We explored frequency and anatomical distribution of SIJ MRI lesions in recreational and elite athletes. METHODS: After pre-test calibration, semicoronal SIJ MRI scans of 20 recreational runners (RR) before/after running and 22 elite ice-hockey players (IP) were assessed by 3 blinded readers for BME and structural lesions using an SIJ quadrant-based module...
February 12, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29415294/the-impact-of-mild-heat-stress-during-prolonged-running-on-gastrointestinal-integrity-gastrointestinal-symptoms-systemic-endotoxin-and-cytokine-profiles
#12
Rhiannon M J Snipe, Anthony Khoo, Cecilia M Kitic, Peter R Gibson, Ricardo J S Costa
The study aimed to determine the effects of mild exertional heat stress on intestinal injury, permeability, gastrointestinal symptoms, and systemic endotoxin and cytokine responses. Ten endurance runners completed 2 h of running at 60% V̇O2max in warm (WARM: 30°C) and temperate (TEMP: 22°C) ambient conditions. Rectal temperature (Tre) and gastrointestinal symptoms were recorded every 10 min during exercise. Blood samples were collected pre- and post-exercise, and during recovery to determine plasma intestinal fatty acid-binding protein (I-FABP) and cortisol concentrations, and systemic endotoxin and inflammatory cytokine profiles...
February 7, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29387447/prospective-monitoring-of-health-problems-among-recreational-runners-preparing-for-a-half-marathon
#13
Karsten Hollander, Antje Baumann, Astrid Zech, Evert Verhagen
Objectives: While the health benefits of running are legitimately advocated, participation in running can also lead to health problems. There is a high range of reported prevalence rates especially of running-related overuse injuries in high-level athletes and during competition. Little consensus exists for acute injuries and illnesses especially in recreational runners. Therefore, the aim of this study was to record the prevalence of health problems in recreational long-distance runners preparing for an event...
2018: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29371075/does-the-temperature-of-water-ingested-during-exertional-heat-stress-influence-gastrointestinal-injury-symptoms-and-systemic-inflammatory-profile
#14
Rhiannon M J Snipe, Ricardo J S Costa
OBJECTIVES: The study aimed to determine the effects of temperature of ingested water during exertional-heat stress on gastrointestinal injury, symptoms and systemic inflammatory responses. DESIGN: Randomised cross-over study. METHODS: Twelve endurance runners completed 2h running at 60% v˙O2max in 35°C ambient temperature on three separate occasions, consuming 250±40mL water before and every 15min during running at either 0.4±0.4°C (COLD), 7...
January 8, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29334675/effects-of-running-retraining-on-biomechanical-factors-associated-with-lower-limb-injury
#15
Marcus D Dunn, David B Claxton, Graham Fletcher, Jonathan S Wheat, David M Binney
Injury risk is an important concern for runners; however, limited evidence exists regarding changes to injury risk following running style retraining. Biomechanical factors, such as absolute peak free moment, knee abduction impulse, peak foot eversion and foot eversion excursion, have been shown to predict lower limb injury. The aim of this study was to assess the effects of Pose running retraining on biomechanical factors associated with lower limb running injury. Twenty uninjured recreational runners were pair-matched based on their five km run time performance and randomly assigned to control (n = 10) and intervention (three 2-h Pose running retraining sessions) groups (n = 10)...
April 2018: Human Movement Science
https://www.readbyqxmd.com/read/29332742/the-effects-of-dorso-lumbar-motion-restriction-on-emg-activity-of-selected-muscles-during-running
#16
Joseph J Morley, Edward Traum
The effects of restricting dorso-lumbar spine mobility on electromyographic activity of the erector spinae, quadriceps femoris, hamstrings and gastrocnemius muscles in runners was investigated. Thermoplastic casting material was fashioned into a rigid orthosis and used to restrict spinal motion during running. Volunteers ran on a treadmill at 2.78 m/sec, under normal conditions and with spinal motion restricted. Surface electromyographic data was collected during both sets of trials. Normal electromyographic data was also compared with previous authors to determine similarity with their electromyographic data...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29320436/the-feasibility-and-usability-of-runningcoach-a-remote-coaching-system-for-long-distance-runners
#17
Daniel Aranki, Gao Xian Peh, Gregorij Kurillo, Ruzena Bajcsy
Studies have shown that about half of the injuries sustained during long-distance running involve the knee. Cadence (steps per minute) has been identified as a factor that is strongly associated with these running-related injuries, making it a worthwhile candidate for further study. As such, it is critical for long-distance runners to minimize their risk of injury by running at an appropriate running cadence. In this paper, we present the results of a study on the feasibility and usability of RunningCoach, a mobile health (mHealth) system that remotely monitors running cadence levels of runners in a continuous fashion, among other variables, and provides immediate feedback to runners in an effort to help them optimize their running cadence...
January 10, 2018: Sensors
https://www.readbyqxmd.com/read/29289028/experience-does-not-influence-injury-related-joint-kinematics-and-kinetics-in-distance-runners
#18
Cristine E Agresta, Jillian Peacock, Jeffrey Housner, Ronald F Zernicke, Jessica Deneweth Zendler
PURPOSE: Increased running experience and more time spent running appears to be advantageous in reducing injury risk, although the reason behind this is unclear. It is plausible that more experience results in better running mechanics leading to less injuries. Running mechanics are often screened during clinical assessments and targeted for correction in gait retraining, particularly those thought to be global indicators of injury or those associated with elevated knee joint loading. Examining the biomechanics of runners who are less-injury prone can improve our understanding of the significance of faulty running mechanics in relation to injury...
March 2018: Gait & Posture
https://www.readbyqxmd.com/read/29283932/glomerular-filtration-rate-is-unchanged-by-ultramarathon
#19
Wojciech Wołyniec, Wojciech Ratkowski, Katarzyna Kasprowicz, Zbigniew Jastrzębski, Sylwia Małgorzewicz, Konrad Witek, Tomasz Grzywacz, Piotr Żmijewski, Marcin Renke
THE MAIN PROBLEM: Acute kidney injury (AKI) is reported as a common complication of marathon and ultramarathon running. In previous studies AKI was diagnosed on the basis of the creatinine level in serum and estimated glomerular filtration rate (eGFR). In the present study we calculated eGFR and also measured creatinine clearance after every 25 km of a 100 km run. METHODS: 20 healthy, amateur runners (males, mean age 40.75 ± 7.15 years, mean weight 76.87 ± 8.39 kg) took part in a 100 km run on a track...
December 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29259804/acute-kidney-injury-associated-with-endurance-events-is-it-a-cause-for-concern-a-systematic-review
#20
L E Hodgson, E Walter, R M Venn, R Galloway, Y Pitsiladis, F Sardat, L G Forni
Introduction: A growing body of evidence suggests even small rises in serum creatinine (SCr) are of considerable clinical relevance. Given that participants in endurance events are exposed to potential (repeated) renal insults, a systematic review was undertaken to collate current evidence for acute kidney injury (AKI), complicating such events. Methods: A systematic review of studies and case reports meeting inclusion criteria on Medline and EMBASE (inception to October 2015)...
2017: BMJ Open Sport & Exercise Medicine
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