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https://www.readbyqxmd.com/read/27902891/computerized-agility-training-improves-change-of-direction-and-balance-performance-independently-of-footwear-in-young-adults
#1
Max R Paquette, Brian K Schilling, Joshua D Bravo, Shelby A Peel, Yuhua Li, Robert J Townsend
: Understanding the effects of training in different footwear on sporting performance would be useful to coaches and athletes. PURPOSE: This study compared the effects of computerized agility training using 3 types of footwear on change-of-direction and balance performance in young adults. METHOD: Thirty recreationally active young adults (Mage = 22.8 ± 3.1 years; Mheight = 1.71 ± 0.7 m; Mbodymass = 73.4 ± 10.3 kg) were randomly assigned to a 6-week computerized agility training intervention in 1 of 3 footwear groups (n = 10/group): barefoot, minimal footwear, or traditional shoes...
November 30, 2016: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/27784638/impact-attenuation-properties-of-jazz-shoes-alter-lower-limb-joint-stiffness-during-jump-landings
#2
Alycia Fong Yan, Richard M Smith, Claire E Hiller, Peter J Sinclair
OBJECTIVES: To quantify the impact attenuation properties of the jazz shoes, and to investigate the in-vivo effect of four jazz shoe designs on lower limb joint stiffness during a dance-specific jump. DESIGN: Repeated measures. METHODS: A custom-built mechanical shoe tester similar to that used by athletic shoe companies was used to vertically impact the forefoot and heel region of four different jazz shoe designs. Additionally, dancers performed eight sautés in second position in bare feet and the shoe conditions...
October 5, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27689598/ergonomic-footwear-for-sri-lankan-primary-schoolchildren-a-review-of-the-literature
#3
I S Hettigama, H K G Punchihewa, N K Heenkenda
BACKGROUND: Foot ailments are common among schoolchildren, some of which may be attributed to wearing ill-fitting footwear. As schoolchildren often participate in athletic activity, they are doubly vulnerable to foot ailments, and are particularly vulnerable to conditions such as hallux valgus, Achilles tendonitis, athlete's foot, corns and calluses. Thus, there is an acute need for the design and manufacture of ergonomic footwear for this target group. While research on appropriate footwear for children has been carried out in relation to child populations in other societies, research on the circumstances of Sri Lankan schoolchildren is lacking...
October 17, 2016: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/27607069/-peripheral-nerve-injuries-in-sports
#4
B Tettenborn, S Mehnert, I Reuter
Peripheral nerve injuries due to sports are relatively rare but the exact incidence is not known due to a lack of epidemiological studies. Particular sports activities tend to cause certain peripheral nerve injuries including direct acute compression or stretching, repetitive compression and stretching over time, or another mechanism such as ischemia or laceration. These nerve lesions may be severe and delay or preclude the athlete's return to sports, especially in cases with delayed diagnosis. Repetitive and vigorous use or overuse makes the athlete vulnerable to disorders of the peripheral nerves, and sports equipment may cause compression of the nerves...
September 2016: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/27274662/plantar-pressures-during-long-distance-running-an-investigation-of-10-marathon-runners
#5
Erik Hohmann, Peter Reaburn, Kevin Tetsworth, Andreas Imhoff
The objective of this study was to record plantar pressures using an in-shoe measuring system before, during, and after a marathon run in ten experienced long-distance runners with a mean age of 37.7 ± 11.5 years. Peak and mean plantar pressures were recorded before, after, and every three km during a marathon race. There were no significant changes over time in peak and mean plantar pressures for either the dominant or non-dominant foot. There were significant between foot peak and mean plantar pressure differences for the total foot (p = 0...
June 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27240101/the-role-of-shoe-design-on-the-prediction-of-free-torque-at-the-shoe-surface-interface-using-pressure-insole-technology
#6
Brian Thomas Weaver, Kathleen Fitzsimons, Jerrod Braman, Roger Haut
The goal of the current study was to expand on previous work to validate the use of pressure insole technology in conjunction with linear regression models to predict the free torque at the shoe-surface interface that is generated while wearing different athletic shoes. Three distinctly different shoe designs were utilised. The stiffness of each shoe was determined with a material's testing machine. Six participants wore each shoe that was fitted with an insole pressure measurement device and performed rotation trials on an embedded force plate...
September 2016: Sports Biomechanics
https://www.readbyqxmd.com/read/27131191/in-shoe-plantar-pressure-distribution-and-lower-extremity-muscle-activity-patterns-of-backward-compared-to-forward-running-on-a-treadmill
#7
Thorsten Sterzing, Clivia Frommhold, Dieter Rosenbaum
OBJECTIVE: Backward locomotion in humans occurs during leisure, rehabilitation, and competitive sports. Little is known about its general biomechanical characteristics and how it affects lower extremity loading as well as muscle coordination. Thus, the purpose of this research was to analyze in-shoe plantar pressure patterns and lower extremity muscle activity patterns for backward compared to forward running. METHODS: On a treadmill, nineteen runners performed forward running at their individually preferred speed, followed by backward running at 70% of their self-selected forward speed...
May 2016: Gait & Posture
https://www.readbyqxmd.com/read/27096286/the-effect-of-weightlifting-shoes-on-the-kinetics-and-kinematics-of-the-back-squat
#8
Hayley S Legg, Mark Glaister, Daniel J Cleather, Jon E Goodwin
Weightlifting shoes (WS) are often used by athletes to facilitate their squat technique; however, the nature of these benefits is not well understood. In this study, the effects of footwear and load on the mechanics of squatting were assessed for 32 participants (age: 25.4 ± 4.4 years; mass 72.87 ± 11.35 kg) grouped by sex and experience. Participants completed loaded and unloaded back squats wearing both WS and athletic shoes (AS). Data were collected utilising a 3D motion capture system synchronised with a force platform and used to calculate kinematic and kinetic descriptors of squatting...
April 20, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27079303/a-randomized-comparison-of-the-biomechanical-effect-of-two-commercially-available-rocker-bottom-shoes-to-a-conventional-athletic-shoe-during-walking-in-healthy-individuals
#9
Mukul Talaty, Sona Patel, Alberto Esquenazi
Rocker bottom shoes have recently gained considerable popularity, likely in part because of the many purported benefits, including reducing joint loading and toning muscles. Scientific inquiry about these benefits has not kept pace with the increased usage of this shoe type. A fundamental premise of rocker bottom shoes is that they transform hard, flat, level surfaces into more uneven ones. Published studies have described a variety of such shoes-all having a somewhat rounded bottom and a cut heel region or a cut forefoot region, or both (double rocker)...
July 2016: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/26999535/running-speed-increases-plantar-load-more-than-per-cent-body-weight-on-an-alterg%C3%A2-treadmill
#10
Athol Thomson, Einar Einarsson, Erik Witvrouw, Rod Whiteley
AlterG® treadmills allow for running at different speeds as well as at reduced bodyweight (BW), and are used during rehabilitation to reduce the impact load. The aim of this study was to quantify plantar loads borne by the athlete during rehabilitation. Twenty trained male participants ran on the AlterG® treadmill in 36 conditions: all combinations of indicated BW (50-100%) paired with different walking and running speeds (range 6-16 km · hr(-1)) in a random order. In-shoe maximum plantar force (Fmax) was recorded using the Pedar-X system...
March 21, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/26921825/pesticide-monitoring-on-soccer-fields-via-shoe-wipes-and-urine-samples
#11
Robyn Gilden, Marc Plisko, Kathleen Hiteshew, Erika Friedmann, Donald Milton
OBJECTIVE: We sought to determine the feasibility of measuring pesticide exposure of children using athletic fields to which pesticides were recently applied. DESIGN AND SAMPLE: This project was a pilot feasibility study designed to measure pre and posttest environmental exposure to Horsepower; a combination herbicide containing (4-Chloro-2-methylphenoxy) acetic acid (MCPA), dicamba and triclopyr. A spot application of Horsepower to a soccer field occurred at 8AM...
May 2016: Environmental Research
https://www.readbyqxmd.com/read/26808847/barefoot-running-reduces-the-submaximal-oxygen-cost-in-female-distance-runners
#12
Adam J Berrones, Stephanie P Kurti, Korey M Kilsdonk, Delonyx J Cortez, Flavia F Melo, Michael Whitehurst
Berrones, AJ, Kurti, SP, Kilsdonk, KM, Cortez, DJ, Melo, FF, and Whitehurst, M. Barefoot running reduces the submaximal oxygen cost in female distance runners. J Strength Cond Res 30(8): 2348-2353, 2016-Being a competitive distance runner is, in part, attributable to a high V[Combining Dot Above]O2max. However, running economy (RE) is a more robust indicator of distance running performance among endurance athletes of similar V[Combining Dot Above]O2max levels. The purpose of this study was to examine the influence of unshod (barefoot) vs...
August 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/26678288/necessity-of-removing-american-football-uniforms-from-humans-with-hyperthermia-before-cold-water-immersion
#13
Kevin C Miller, Blaine C Long, Jeffrey Edwards
CONTEXT: The National Athletic Trainers' Association and the American College of Sports Medicine have recommended removing American football uniforms from athletes with exertional heat stroke before cold-water immersion (CWI) based on the assumption that the uniform impedes rectal temperature (T(rec)) cooling. Few experimental data exist to verify or disprove this assumption and the recommendations. OBJECTIVES: To compare CWI durations, T(rec) cooling rates, thermal sensation, intensity of environmental symptoms, and onset of shivering when hyperthermic participants wore football uniforms during CWI or removed the uniforms immediately before CWI...
December 2015: Journal of Athletic Training
https://www.readbyqxmd.com/read/26660758/sprint-running-performance-monitoring-methodological-and-practical-considerations
#14
Thomas Haugen, Martin Buchheit
The aim of this review is to investigate methodological concerns associated with sprint performance monitoring, more specifically the influence and magnitude of varying external conditions, technology and monitoring methodologies not directly related to human physiology. The combination of different starting procedures and triggering devices can cause up to very large time differences, which may be many times greater than performance changes caused by years of conditioning. Wind, altitude, temperature, barometric pressure and humidity can all combine to yield moderate time differences over short sprints...
May 2016: Sports Medicine
https://www.readbyqxmd.com/read/26630104/injuries-and-footwear-part-1-athletic-shoe-history-and-injuries-in-relation-to-foot-arch-height-and-training-in-boots
#15
REVIEW
Joseph J Knapik, Rodney Pope, Robin Orr, Tyson Grier
This article traces the history of the athletic shoe, examines whether selecting running shoes based on foot arch height influences injuries, and examines historical data on injury rates when physical training (PT) is performed in boots versus running shoes. In the 1980s and into the 2000s, running shoe companies were advertising specialized shoes with "motion control," "stability," and "cushioning," designed for individuals with low, normal, and high arches, respectively. Despite marketing claims that these shoes would reduce injury rates, coordinated studies in Army, Air Force, and Marine Corps basic training showed that assigning or selecting shoes on this basis had no effect on injury rates...
2015: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/26606273/sensory-enhancing-insoles-modify-gait-during-inclined-treadmill-walking-with-load
#16
Daniel L Miranda, Wen-Hao Hsu, Kelsey Petersen, Stacey Fitzgibbons, James Niemi, Nicholas Lesniewski-Laas, Conor J Walsh
INTRODUCTION: Inclined walking while carrying a loaded backpack induces fatigue, which may destabilize gait and lead to injury. Stochastic resonance (SR) technology has been used to stabilize spatiotemporal gait characteristics of elderly individuals but has not been tested on healthy recreational athletes. Herein, we determined if sustained vigorous walking on an inclined surface while carrying a load destabilizes gait and if SR has a further effect. METHODS: Participants were fitted with a backpack weighing 30% of their body weight and asked to walk at a constant self-selected pace while their feet were tracked using an optical motion capture system...
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/26540264/effects-of-taping-and-orthoses-on-foot-biomechanics-in-adults-with-flat-arched-feet
#17
Christopher Bishop, John B Arnold, Thomas May
PURPOSE: There is a paucity of evidence on the biomechanical effects of foot taping and foot orthoses in realistic conditions. This study aimed to determine the immediate effect and relationships between changes in multisegment foot biomechanics with foot taping and customized foot orthoses in adults with flat-arched feet. METHODS: Multisegment foot biomechanics were measured in 18 adults with flat-arched feet (age 25.1 ± 2.8 yr; height 1.73 ± .13 m, body mass 70...
April 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/26367197/influence-of-footwear-designed-to-boost-energy-return-on-running-economy-in-comparison-to-a-conventional-running-shoe
#18
J Sinclair, R Mcgrath, O Brook, P J Taylor, S Dillon
Running economy is a reflection of the amount of inspired oxygen required to maintain a given velocity and is considered a determining factor for running performance. Athletic footwear has been advocated as a mechanism by which running economy can be enhanced. New commercially available footwear has been developed in order to increase energy return, although their efficacy has not been investigated. This study aimed to examine the effects of energy return footwear on running economy in relation to conventional running shoes...
June 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/26176985/the-effect-of-translational-and-rotational-traction-on-lower-extremity-joint-loading
#19
John W Wannop, Darren J Stefanyshyn
Previous studies have linked footwear traction to lower extremity non-contact injury; however, these studies mainly focussed on rotational traction exclusively. While studies have shown that increases in traction lead to increases in joint loading, represented by joint moments, these studies failed to determine how the individual components of rotational and translational traction affect joint loading. Therefore, this study investigated how each component of traction independently affects lower extremity joint loading...
2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/26090706/cold-water-immersion-for-hyperthermic-humans-wearing-american-football-uniforms
#20
Kevin C Miller, Erik E Swartz, Blaine C Long
CONTEXT: Current treatment recommendations for American football players with exertional heatstroke are to remove clothing and equipment and immerse the body in cold water. It is unknown if wearing a full American football uniform during cold-water immersion (CWI) impairs rectal temperature (Trec) cooling or exacerbates hypothermic afterdrop. OBJECTIVE: To determine the time to cool Trec from 39.5°C to 38.0°C while participants wore a full American football uniform or control uniform during CWI and to determine the uniform's effect on Trec recovery postimmersion...
August 2015: Journal of Athletic Training
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