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https://www.readbyqxmd.com/read/28714798/foot-rollover-temporal-parameters-during-walking-straight-ahead-and-stepping-over-obstacles-obese-and-non-obese-postmenopausal-women
#1
David Silva, Ronaldo Gabriel, Helena Moreira, João Abrantes, Aurélio Faria
The aim of this study was to compare the temporal foot rollover data between walking straight ahead and stepping over obstacles for obese and non-obese postmenopausal women. Plantar pressure data were collected from 67 women. The initial, final, and duration of contact of 10 foot areas were measured. Both limbs of both groups showed a longer foot contact duration on the obstacle task. Significant temporal differences were found for both groups between straight ahead and crossing obstacles on the initial, final, and duration of contact for several foot areas...
July 17, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28713474/plantar-pressure-differences-between-nordic-walking-techniques
#2
Alberto Encarnación-Martínez, Ángel Gabriel Lucas-Cuevas, Pedro Pérez-Soriano, Ruperto Menayo, Gemma María Gea-García
High plantar pressure has been associated with increased risk of injury. The characteristics of each physical activity determine the load on the lower limbs. The influence of Nordic Walking (NW) technique on plantar pressure is still unknown. The aim of this study was to analyze the differences between plantar pressure during NW with the Diagonal technique (DT) versus Alpha technique (AT) and compare them with the pressure obtained during normal walking (W). The normality and sphericity of the plantar pressure data were checked before performing a two-way repeated measures ANOVA in order to find differences between speeds (preferred, fast) and the gait (NW, W) as within-subject factors...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28713455/a-pilot-study-of-the-effect-of-outsole-hardness-on-lower-limb-kinematics-and-kinetics-during-soccer-related-movements
#3
Dong Sun, Qichang Mei, Julien S Baker, Xuewen Jia, Yaodong Gu
The purpose of this study was to investigate the effect of different outsole hardness of turf cleats shoes on the lower limb kinematics and kinetics of soccer players playing on artificial turf. The participants were required to complete tasks of straight running and 45° left sidestep cutting movements, respectively, at the speed of 4.5 ± 0.2 m/s on artificial turf. They were asked to randomly select turf cleats shoes with a soft outsole (SO), medium hardness outsole (MO) and hard outsole (HO). During the stance phase of straight running, peak pressure and force-time integral in medial forefoot (MFF) of players wearing cleats shoes with MO were significantly higher than those wearing cleats shoes with SO...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28703910/medialis-pedis-flap-for-reconstruction-of-weight-bearing-heel
#4
Jin Sung Park, Jae Hoon Lee, Jung Suk Lee, Jong Hun Baek
BACKGROUND: Among the various flaps available for the reconstruction of the heel, a medial plantar flap has been widely accepted as the most ideal. This flap, however, involves the medial plantar nerve and its cutaneous branches, which may lead to postoperative hyperesthesia and dual sensation. The purpose of this report was to report the outcomes of the use of the medialis pedis flap for the coverage of weight bearing heel soft tissue defect. PATIENTS AND METHODS: A total of 8 patients who had undergone reconstruction of the weight bearing heel with the medialis pedis flap were enrolled for this study...
July 13, 2017: Microsurgery
https://www.readbyqxmd.com/read/28702813/dynamic-factors-involved-in-common-peroneal-nerve-entrapment-neuropathy
#5
Takao Kitamura, Kyongsong Kim, Daijiro Morimoto, Rinko Kokubo, Naotaka Iwamoto, Toyohiko Isu, Akio Morita
BACKGROUND: Common peroneal nerve (CPN) entrapment neuropathy (CPNEN) is the most common peripheral neuropathy of the lower extremities. The pathological mechanisms underlying CPNEN remain unclear. We sought to identify dynamic factors involved in CPNEN by directly measuring the CPN pressure during stepwise CPNEN surgery. METHODS: We enrolled seven patients whose CPNEN improved significantly after CPN neurolysis. All suffered intermittent claudication, and the repetitive plantar flexion test, used as a CPNEN provocation test, was positive...
July 12, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28702448/study-of-gait-using-weighted-vests-on-balance-with-paraplegic-patients
#6
Hyuk-Jae Choi, Hyun-Joo Kang
The aims of this study were to identify static and dynamic balance with the addition of weighted vests for the rehabilitation of paraplegic patients. The study was conducted using weighted vest exercises with applied optimal weight ratios. Ten paraplegic patients who use custom orthosis were enrolled for experiments including static standing and dynamic gait with a weighted vest. We set weight ratios as 0%, 10%, and 15% of the patients' weight. A plantar pressure device was used for static balance tests for excursion and velocity of center of pressure and we identified dynamic balance through the tool of Timed Up and Go (TUG) test...
June 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28698802/gait-analysis-in-children-with-cerebral-palsy
#7
Stéphane Armand, Geraldo Decoulon, Alice Bonnefoy-Mazure
Cerebral palsy (CP) children present complex and heterogeneous motor disorders that cause gait deviations.Clinical gait analysis (CGA) is needed to identify, understand and support the management of gait deviations in CP. CGA assesses a large amount of quantitative data concerning patients' gait characteristics, such as video, kinematics, kinetics, electromyography and plantar pressure data.Common gait deviations in CP can be grouped into the gait patterns of spastic hemiplegia (drop foot, equinus with different knee positions) and spastic diplegia (true equinus, jump, apparent equinus and crouch) to facilitate communication...
December 2016: EFORT open reviews
https://www.readbyqxmd.com/read/28694849/optimisation-of-rocker-sole-footwear-for-prevention-of-first-plantar-ulcer-comparison-of-group-optimised-and-individually-selected-footwear-designs
#8
Stephen J Preece, Jonathan D Chapman, Bjoern Braunstein, Gert-Peter Brüggemann, Christopher J Nester
BACKGROUND: Appropriate footwear for individuals with diabetes but no ulceration history could reduce the risk of first ulceration. However, individuals who deem themselves at low risk are unlikely to seek out bespoke footwear which is personalised. Therefore, our primary aim was to investigate whether group-optimised footwear designs, which could be prefabricated and delivered in a retail setting, could achieve appropriate pressure reduction, or whether footwear selection must be on a patient-by-patient basis...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/28690463/in-vivo-plantar-pressures-in-adult-acquired-flatfoot-compared-to-control-using-an-intraoperative-pedobarographic-device
#9
Aoife MacMahon, Howard J Hillstrom, Huong T Do, Jeremy Y Chan, Jonathan T Deland, Scott J Ellis
BACKGROUND: Intraoperative pedobarography has the potential to aid surgical decisions, but no parameters exist to guide its use. QUESTIONS/PURPOSES: This study compared supine plantar pressures between flatfoot patients and controls using a previously validated intraoperative pedobarographic device and examined associations between supine, walking, and standing plantar pressures. METHODS: Ten preoperative patients with stage II adult-acquired flatfoot deformity (AAFD) were compared to ten healthy controls...
July 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28689681/locomotion-pattern-and-foot-pressure-adjustments-during-gentle-turns-in-healthy-subjects
#10
Kathrin E Peyer, Charlotte A Brassey, Kayleigh A Rose, William I Sellers
People suffering from locomotor impairment find turning manoeuvres more challenging than straight-ahead walking. Turning manoeuvres are estimated to comprise a substantial proportion of steps taken daily, yet research has predominantly focused on straight-line walking, meaning that the basic kinetic, kinematic and foot pressure adaptations required for turning are not as well understood. We investigated how healthy subjects adapt their locomotion patterns to accommodate walking along a gently curved trajectory (radius 2...
June 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28688455/foot-use-during-vertical-climbing-in-chimpanzees-pan-troglodytes
#11
R E Wunderlich, S B Ischinger
Upright bipedalism is a hallmark of hominin locomotion, however debates continue regarding the extent of arboreal locomotion and the nature of bipedalism practiced by early hominins. Pedal form and function play a prominent role in these debates, as the foot is the element that directly interacts with the locomotor substrate. Recent finds have substantially increased the availability of associated foot remains of early hominins and emphasized the enigmatic nature of the early evolution of human bipedalism. New discoveries of associated forefoot remains have afforded the opportunity to assess relative proportions across the forefoot of fossil hominins and illuminated the need for data on relative loading across the forefoot in extant hominoids...
August 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28687865/-forefoot-relief-with-shoe-inserts-effects-of-different-construction-strategies
#12
H Baur, N Merz, A Muster, G Flückiger, A Hirschmüller
BACKGROUND: Shoe inserts and shoe modifications are used to reduce plantar peak pressure. The effects of different shoe inserts and shoe construction strategies for relief of the forefoot have not yet been sufficiently evaluated. PURPOSE: The aim of this study was to analyze the effects of shoe inserts and shoe construction strategies (e.g. metatarsal pad, forefoot cushioning and control) and shoe modifications (e.g. flexible or stiff) on the peak plantar pressure in the forefoot region...
July 7, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28687150/virtually-optimized-insoles-for-offloading-the-diabetic-foot-a-randomized-crossover-study
#13
S Telfer, J Woodburn, A Collier, P R Cavanagh
Integration of objective biomechanical measures of foot function into the design process for insoles has been shown to provide enhanced plantar tissue protection for individuals at-risk of plantar ulceration. The use of virtual simulations utilizing numerical modeling techniques offers a potential approach to further optimize these devices. In a patient population at-risk of foot ulceration, we aimed to compare the pressure offloading performance of insoles that were optimized via numerical simulation techniques against shape-based devices...
June 24, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28684897/influence-of-cleats-surface-interaction-on-the-performance-and-risk-of-injury-in-soccer-a-systematic-review
#14
REVIEW
Diogo C F Silva, Rubim Santos, João Paulo Vilas-Boas, Rui Macedo, António Mesquita Montes, Andreia S P Sousa
OBJECTIVE: To review the influence of cleats-surface interaction on the performance and risk of injury in soccer athletes. DESIGN: Systematic review. DATA SOURCES: Scopus, Web of science, PubMed, and B-on. ELIGIBILITY CRITERIA: Full experimental and original papers, written in English that studied the influence of soccer cleats on sports performance and injury risk in artificial or natural grass. RESULTS: Twenty-three articles were included in this review: nine related to performance and fourteen to injury risk...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28661227/a-preliminary-study-of-patient-specific-mechanical-properties-of-diabetic-and-healthy-plantar-soft-tissue-from-gated-magnetic-resonance-imaging
#15
Evan D Williams, Michael J Stebbins, Peter R Cavanagh, David R Haynor, Baocheng Chu, Michael J Fassbind, Vara Isvilanonda, William R Ledoux
Foot loading rate, load magnitude, and the presence of diseases such as diabetes can all affect the mechanical properties of the plantar soft tissues of the human foot. The hydraulic plantar soft tissue reducer instrument was designed to gain insight into which variables are the most significant in determining these properties. It was used with gated magnetic resonance imaging to capture three-dimensional images of feet under dynamic loading conditions. Custom electronics controlled by LabVIEW software simultaneously recorded system pressure, which was then translated to applied force values based on calibration curves...
July 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28656782/impact-of-generalized-joint-laxity-on-plantar-loading-patterns-in-young-females
#16
Elif Aydın, Ayfer Metin Tellioğlu, I Mran Kurt Ömürlü, Yasemin Turan
BACKGROUND: Generalized joint laxity is often associated with gait deviations. The aim of this study was to investigate the static and dynamic loading pattern of the foot with increasing joint mobility and to discuss the potential impact of this condition on the plantar loading patterns. METHODS: Seventy female participants between ages of 18 and 30 were included in this cross-sectional survey. The Beighton-Horan Joint Mobility Index scores were assessed and participants divided into 3 categories: no hypermobility (NH) group, scores 0 to 2; moderate hypermobility (MH) group, scores 3 to 4; distinct hypermobility (DH) group, scores 5 to 9...
June 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28654792/age-related-plantar-centre-of-pressure-trajectory-changes-during-barefoot-walking
#17
Gisela Sole, Todd Pataky, Christopher C Sole, Leigh Hale, Stephan Milosavljevic
Plantar centre of pressure (COP) variables during gait have been used to predict risk of injury, or consequences thereof. The aim of this study was to determine the effect of age on the COP trajectory during barefoot gait at a self-selected speed. 287 participants (aged 18-80year, 163 women) walked barefoot at self-selected speed across a Footscan(®) force platform, completing five trials for each side. COP trajectories were extracted and trajectory-level canonical correlation analysis was used to test their correlation with age...
June 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28653780/gait-training-for-chronic-ankle-instability-improves-neuromechanics-during-walking
#18
Mark A Feger, Joseph M Hart, Susan Saliba, Mark F Abel, Jay Hertel
A novel gait-training device has been shown to improve gait patterns while patients with chronic ankle instability (CAI) are using the device and our current objective was to analyze the effect of structured gait training with the device on plantar pressure and surface electromyography (sEMG) following repeated gait training sessions. Sixteen CAI patients participated. Plantar pressure and sEMG were collected simultaneously during walking pre- and post-gait training. Plantar pressure (pressure time integral, peak pressure, time to peak pressure, contact area, contact time and center of pressure trajectory) of the entire foot and 9 specific regions of the foot were recorded concurrently with sEMG root mean square amplitudes from the anterior tibialis, peroneus longus, medial gastrocnemius, and gluteus medius...
June 27, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28650759/evaluation-of-plantar-pressure-distribution-in-relationship-to-body-mass-index-in-czech-women-during-walking
#19
Kristína Tománková, Miroslava Přidalová, Zdenek Svoboda, Roman Cuberek
BACKGROUND: Excessive body weight seems to be a risk factor for foot loading. We sought to investigate the effect of different body mass index (BMI) levels on plantar pressure distribution during walking. METHODS: In total, 163 women aged 45 to 65 years (mean ± SD: age, 57.4 ± 5.3 years; BMI, 27.0 ± 5.3) participated in the study. The women were divided, on the basis of BMI, into a normal-weight, overweight, or obese group. The study used the four following plantar pressure parameters (PPPs): contact percentage, absolute pressure impulse, relative pressure impulse, and absolute peak pressure, which were recorded in ten foot regions using a pressure measurement system...
May 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28633035/economy-and-endurance-in-human-evolution
#20
REVIEW
Herman Pontzer
The evolutionary pressures shaping humans' unique bipedal locomotion have been a focus of research since Darwin, but the origins of humans' economical walking gait and endurance running capabilities remain unclear. Here, I review the anatomical and physiological determinants of locomotor economy (e.g., limb length and posture) and endurance (e.g., muscle volume and fiber type) and investigate their development in the hominin fossil record. The earliest hominins were bipedal but retained ape-like features in the hind limb that would have limited their walking economy compared to living humans...
June 19, 2017: Current Biology: CB
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