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https://www.readbyqxmd.com/read/29791464/the-influence-of-increased-distal-loading-on-metabolic-cost-efficiency-and-kinematics-of-roller-ski-skating
#1
Conor M Bolger, Veronica Bessone, Peter Federolf, Gertjan Ettema, Øyvind Sandbakk
The purpose of the present study was to examine the influence of increased loading of the roller ski on metabolic cost, gross efficiency, and kinematics of roller ski skating in steep and moderate terrain, while employing two incline-specific techniques. Ten nationally ranked male cross-country skiers were subjected to four 7-minute submaximal intervals, with 0, 0.5, 1.0, and 1.5 kg added beneath the roller-ski in a randomized order. This was done on two separate days, with the G2 skating at 12% incline and 7 km/h speed and G3 skating at 5% incline and 14 km/h speed, respectively...
2018: PloS One
https://www.readbyqxmd.com/read/29787473/factors-contributing-to-medial-tibial-stress-syndrome-in-runners-a-prospective-study
#2
James Becker, Mimi Nakajima, Will F W Wu
PURPOSE: Medial tibial stress syndrome (MTSS) is one of the most common overuse injuries sustained by runners. Despite the prevalence of this injury, risk factors for developing MTSS remain unclear. The purpose of this study was to prospectively evaluate differences in passive range of motion, muscle strength, plantar pressure distributions, and running kinematics between runners who developed MTSS and those who did not. METHODS: 24 NCAA Division 1 cross country runners participated in this study...
May 22, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29770274/do-running-speed-and-shoe-cushioning-influence-impact-loading-and-tibial-shock-in-basketball-players
#3
Wing-Kai Lam, Jacobus Liebenberg, Jeonghyun Woo, Sang-Kyoon Park, Suk-Hoon Yoon, Roy Tsz-Hei Cheung, Jiseon Ryu
Background: Tibial stress fracture (TSF) is a common injury in basketball players. This condition has been associated with high tibial shock and impact loading, which can be affected by running speed, footwear condition, and footstrike pattern. However, these relationships were established in runners but not in basketball players, with very little research done on impact loading and speed. Hence, this study compared tibial shock, impact loading, and foot strike pattern in basketball players running at different speeds with different shoe cushioning properties/performances...
2018: PeerJ
https://www.readbyqxmd.com/read/29748108/the-sensitivity-of-thresholds-by-ground-reaction-force-and-postural-stability-in-subjects-with-and-without-navicular-drop
#4
Paul S Sung
Understanding plantar pressure changes is an important component of the functional evaluation of subjects with flat foot. However, the altered postural control determined by the threshold from the vertical ground reaction force (GRF) requires clarification. The purpose of our study was to investigate the various GRF thresholds in subjects with and without flat foot during 1-leg standing. We included 34 control subjects and 30 subjects with flat foot in the present study. They performed the 1-leg standing test for 30 seconds, with the contralateral hip and knee flexed approximately 90°...
May 7, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29709300/foot-longitudinal-arches-in-obese-overweight-and-normal-weight-females-who-differ-in-age
#5
Agnieszka Jankowicz-Szymańska, Katarzyna Wódka, Małgorzata Kołpa, Edyta Mikołajczyk
Nowadays, excessive body weight is the cause of death of more people than malnutrition. Obesity is a growing health problem worldwide, which also results in a considerable number of movement dysfunctions, including degenerative changes and foot pain. The study aimed to assess the effect of overweight and obesity on the height of foot arches in females aged 10-84 years, as well as to establish which factor - age or BMI - affected the height of medial longitudinal arch (MLA) to a greater extent. Three groups of females (96 pupils, 86 young adults and 88 seniors) were selected to participate in the study...
March 27, 2018: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/29706698/the-prevalence-of-the-flat-foot-condition-and-insole-prescription-in-people-with-down-s-syndrome-a-retrospective-population-based-study
#6
Yoshihide Kanai, Hirotaka Mutsuzaki, Tomohiro Nakayama, Arito Yozu, Nobuaki Iwasaki
[Purpose] The general approach for flat foot (FF) treatment in people with Down's syndrome (DS) is the use of insoles. However, the appropriate timing of the first insole prescription remains unclear. An aim of this present research was to investigate the status of prevalence of FF and orthosis prescription in the DS population. [Subjects and Methods] Two hundred fifteen subjects with DS who were seen at our hospital were retrospectively investigated. Investigated parameters were: prevalence of FF and other foot diseases, ratio and timing of orthopaedic consultation, ratio and timing of orthoses prescription, and mean age at the time of orthosis prescription...
April 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29682429/when-why-and-how-foot-orthoses-fos-should-be-prescribed-for-children-with-flexible-pes-planus-a-delphi-survey-of-podiatrists
#7
Sindhrani Dars, Hayley Uden, Saravana Kumar, Helen A Banwell
Background: Flexible pes planus (flat feet) in children is a common reason parents and caregivers seek health professionals consult and a frequent reason podiatrists prescribe foot orthoses. Yet no universal agreement exists on the diagnosis of this condition, or when and how foot orthoses should be prescribed. The aim of this study was to garner consensus and agreement among podiatrists on the use of FOs for paediatric flexible pes planus. Methods: A three round Delphi consensus survey was undertaken with 15 podiatry experts from Australia, New Zealand and the United Kingdom...
2018: PeerJ
https://www.readbyqxmd.com/read/29668534/comparison-between-three-types-of-prosthetic-feet-a-randomized-double-blind-single-subject-multiple-rater-trial
#8
Helena Burger, Gaj Vidmar, Branko Zdovc, Dominik Erzar, Metka Zalar
There are many prosthetic feet (Pfeet) on the market, and those in the same category do not necessarily have the same properties. We assessed three different Pfeet in terms of gait patterns on various terrains, balance and walking speed in a randomized double-blind controlled single-subject multiple-rater clinical trial. The patient was a 43-year old man who was an active prosthesis user and was amputated at transtibial level because of injury 17 years ago. One Solid Ankle Cushion Heel and two Dynamic Elastic Response (DER) Pfeet were tried six times in random order...
April 17, 2018: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/29651897/the-effect-of-uphill-and-downhill-slopes-on-weight-transfer-alignment-and-shot-outcome-in-golf
#9
Glen M Blenkinsop, Ying Liang, Nicholas J Gallimore, Michael J Hiley
The aim of the study was to examine changes in weight transfer, alignment and shot outcome during golf shots from flat, uphill, and downhill slopes. Twelve elite male golfers hit 30 shots with a six-iron from a computer assisted rehabilitation environment (CAREN) used to create 5° slopes while collecting 3D kinematics and kinetics of the swing. A launch monitor measured performance outcomes. A shift in the centre of pressure was found throughout the swing when performed on a slope, with the mean position moving approximately 9% closer to the lower foot...
April 13, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29626145/risk-factors-for-lower-limb-injuries-during-initial-naval-training-a-prospective-study
#10
Daniel R Bonanno, S E Munteanu, G S Murley, K B Landorf, H B Menz
INTRODUCTION: This study aimed to identify risk factors associated with the development of common lower limb injuries during initial defence training in naval recruits who were enrolled in a randomised trial. METHODS: Three-hundred and six naval recruits were randomly allocated flat insoles (n=153) or foot orthoses (n=153) while undertaking 11 weeks of initial training. Participant characteristics (including anthropometrics, general health, physical activity, fitness and foot characteristics) were collected at the baseline assessment and injuries were documented prospectively...
April 6, 2018: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/29562969/equivalence-testing-as-a-tool-for-fatigue-risk-management-in-aviation
#11
Lora J Wu, Philippa H Gander, Margo van den Berg, T Leigh Signal
BACKGROUND: Many civilian aviation regulators favor evidence-based strategies that go beyond hours-of-service approaches for managing fatigue risk. Several countries now allow operations to be flown outside of flight and duty hour limitations, provided airlines demonstrate an alternative method of compliance that yields safety levels "at least equivalent to" the prescriptive regulations. Here we discuss equivalence testing in occupational fatigue risk management. We present suggested ratios/margins of practical equivalence when comparing operations inside and outside of prescriptive regulations for two common aviation safety performance indicators: total in-flight sleep duration and psychomotor vigilance task reaction speed...
April 1, 2018: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29553223/the-effect-of-different-foot-orthoses-on-pain-and-health-related-quality-of-life-in-painful-flexible-flat-foot-a-randomized-controlled-trial
#12
Yasin Yurt, Gül Şener, Yavuz Yakut
BACKGROUND: Foot orthoses are widely used in conservative treatment of painful flexible flatfoot however research is limited to choose the best option in orthotic treatment. AIM: We aimed to compare the effects of computer-aided design/computer-aided manufacturing (CAD-CAM) and conventional insole types in comparison with sham insole, on pain and health related quality of life in patients with painful flexible flatfoot. DESIGN: Randomized controlled trial...
March 16, 2018: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29529927/textured-insoles-reduce-vertical-loading-rate-and-increase-subjective-plantar-sensation-in-overground-running
#13
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/29497286/the-effect-of-flat-and-textured-insoles-on-the-balance-of-primary-care-elderly-people-a-randomized-controlled-clinical-trial
#14
Cecília de Morais Barbosa, Manoel Barros Bértolo, Juliana Zonzini Gaino, Michael Davitt, Zoraida Sachetto, Eduardo de Paiva Magalhães
Background: Aging is associated with reduced postural stability and increased fall risk. Foot orthoses have been reported as an adjuvant intervention to improve balance by stimulating foot plantar mechanical receptors and thus increasing somatosensory input. Purpose: The aim of this study is to evaluate the effect of flat and textured insoles on the balance of primary care elderly people. Design: Prospective, parallel, randomized, and single-blind trial...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29487321/foot-strength-and-stiffness-are-related-to-footwear-use-in-a-comparison-of-minimally-vs-conventionally-shod-populations
#15
Nicholas B Holowka, Ian J Wallace, Daniel E Lieberman
The longitudinal arch (LA) helps stiffen the foot during walking, but many people in developed countries suffer from flat foot, a condition characterized by reduced LA stiffness that can impair gait. Studies have found this condition is rare in people who are habitually barefoot or wear minimal shoes compared to people who wear conventional modern shoes, but the basis for this difference remains unknown. Here we test the hypothesis that the use of shoes with features that restrict foot motion (e.g. arch supports, toe boxes) is associated with weaker foot muscles and reduced foot stiffness...
February 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29451921/the-effectiveness-of-non-surgical-intervention-foot-orthoses-for-paediatric-flexible-pes-planus-a-systematic-review-update
#16
Sindhrani Dars, Hayley Uden, Helen A Banwell, Saravana Kumar
BACKGROUND: Flexible pes planus (flat feet) in children is a common presenting condition in clinical practice due to concerns amongst parents and caregivers. While Foot Orthoses (FOs) are a popular intervention, their effectiveness remains unclear. Thus, the aim of this systematic review was to update the current evidence base for the effectiveness of FOs for paediatric flexible pes planus. METHODS: A systematic search of electronic databases (Cochrane, Medline, AMED, EMBASE, CINHAL, SportDiscus, Scopus and PEDro) was conducted from January 2011 to July 2017...
2018: PloS One
https://www.readbyqxmd.com/read/29414801/ultramorphological-characteristics-of-podocyte-development-in-the-human-fetal-metanephros
#17
Marija Dakovic Bjelakovic, Slobodan Vlajkovic, Milica Bjelakovic
The aim of this study was to determine the developmental characteristics of podocytes in the human fetal metanephros using scanning electron microscopy, light microscopy, and transmission electron microscopy. Kidney samples of 15 human fetuses of both sexes (gestational age 10-22 weeks) were analyzed. At the S-shaped body stage, primitive podocytes were arranged in a layer of cuboidal cells beneath the vascular cleft. When observed from Bowman's space, the demarcation between adjacent podocytes was not clear, but mild depressions indicated cell boundaries...
2018: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/29413794/gait-adaptations-of-older-adults-on-an-uneven-brick-surface-can-be-predicted-by-age-related-physiological-changes-in-strength
#18
P C Dixon, K H Schütte, B Vanwanseele, J V Jacobs, J T Dennerlein, J M Schiffman
BACKGROUND: Outdoor falls in community-dwelling older adults are often triggered by uneven pedestrian walkways. It remains unclear how older adults adapt to uneven surfaces typically encountered in the outdoor built-environment and whether these adaptations are associated to age-related physiological changes. RESEARCH QUESTION: The aims of this study were to (1) compare gait parameters over uneven and flat brick walkways, (2) evaluate the differences between older and young adults for these two surfaces, and (3) assess if physiological characteristics could predict adaptations in older adults...
March 2018: Gait & Posture
https://www.readbyqxmd.com/read/29413770/results-of-subtalar-arthroereisis-for-posterior-tibial-tendon-dysfunction-stage-iia1-based-on-35-patients
#19
Antonio Viladot Voegeli, Nicolás Fontecilla Cornejo, Juan Andrés Serrá Sandoval, Fernando Alvarez Goenaga, Ramón Viladot Pericé
BACKGROUND: The aim of the study was to evaluate the clinical and radiological results obtained in the treatment of adult flexible flatfoot secondary to posterior tibial dysfunction with subtalar arthroereisis using a Kalix ® endorthesis. METHODS: 35 patients (37 feet) were studied, having been operated between January 2010 and January 2015 for reducible flatfoot secondary to posterior tibial tendon dysfunction stage IIA1 of Bluman. RESULTS: The average follow up was 47...
February 2018: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29354578/relationships-between-self-awareness-and-clinical-diagnostic-findings-of-abnormal-foot-arch-height-in-koreans
#20
Youngsuk Son, Hyo Jeong Kang, Yun-Mi Song, Ji Hye Hwang
Objective: To see how people think about their own feet, and evaluate whether there are correlations among self-awareness of the participants and clinical examination findings. Methods: Adult twins and their families who participated in the Healthy Twin study from May 2008 to April 2010 were recruited. Participants were asked whether they thought their feet were normal, flat, or cavus. The lateral talometatarsal angles were measured on foot X-rays to determine the foot arch height...
December 2017: Annals of Rehabilitation Medicine
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