keyword
https://read.qxmd.com/read/38458184/plantar-flexor-muscle-activity-and-fascicle-behavior-in-gastrocnemius-medialis-during-running-in-highly-cushioned-shoes-with-carbon-fiber-plates
#1
JOURNAL ARTICLE
Keiichiro Hata, Yuta Hamamura, Hiroaki Noro, Yohei Yamazaki, Shunsuke Nagato, Kazuyuki Kanosue, Toshio Yanagiya
The purposes of this study were to clarify the electromyography (EMG) of plantar flexors and to analyze the fascicle and tendon behaviors of the gastrocnemius medialis (GM) during running in the carbon-fiber plate embedded in thicker midsole racing shoes, such as the Nike ZoomX Vaporfly (VF) and traditional racing shoes (TRAD). We compared the fascicle and series elastic element behavior of the GM and EMG of the lower limb muscles during running (14 km/h, 45 s) in athletes wearing VF or TRAD. GM EMGs in the push-off phase were approximately 50% lower in athletes wearing VF than in TRAD...
March 7, 2024: Journal of Applied Biomechanics
https://read.qxmd.com/read/38446400/the-relationship-between-running-biomechanics-and-running-economy-a-systematic-review-and-meta-analysis-of-observational-studies
#2
Bas Van Hooren, Ivan Jukic, Maartje Cox, Koen G Frenken, Iker Bautista, Isabel S Moore
BACKGROUND: Running biomechanics is considered an important determinant of running economy (RE). However, studies examining associations between running biomechanics and RE report inconsistent findings. OBJECTIVE: The aim of this systematic review was to determine associations between running biomechanics and RE and explore potential causes of inconsistency. METHODS: Three databases were searched and monitored up to April 2023. Observational studies were included if they (i) examined associations between running biomechanics and RE, or (ii) compared running biomechanics between groups differing in RE, or (iii) compared RE between groups differing in running biomechanics during level, constant-speed, and submaximal running in healthy humans (18-65 years)...
March 6, 2024: Sports Medicine
https://read.qxmd.com/read/38434030/curvature-generation-based-on-weight-updated-boosting-using-shoe-last-point-cloud-measurements
#3
JOURNAL ARTICLE
Dan Wang, Zairan Li, Nilanjan Dey, Bitan Misra, R Simon Sherratt, Fuqian Shi
Lasts are foot-shaped forms made of plastic, wood, aluminum, or 3D-printed plastic. The last of a shoe determines not only its shape and style but also how well it fits and protects the foot. A weight-updated boosting-based ensemble learning (WUBEL) algorithm is presented in this paper to extract critical features (points) from plantar pressure imaging to optimize the shoe's last surface to satisfy a comfortable shoe's last surface optimization design. An enhanced last design is constructed from the foot measurement data of the bottom surface of the base last, the critical control lines (points) of the shoe's last body, and the running-in degree of the pressure-sensitive area lattice data...
February 29, 2024: Heliyon
https://read.qxmd.com/read/38413894/embedded-implementation-research-in-programming-at-scale-the-new-normal-to-be
#4
JOURNAL ARTICLE
Stefan Swartling Peterson
If you want to run faster, don't just buy a new pair of shoes; also consider your training methods and where you run.This supplement examines six countries that have run faster than others in reducing under-five mortality, taking an implementation research approach, with country case studies done with local researchers and local institutions. Key generalizable learnings are to choose and adapt implementation strategies to context, design strategies to target the most vulnerable, systematically learn from implementation experience, and to leverage non-health-sector contributions...
February 28, 2024: BMC Pediatrics
https://read.qxmd.com/read/38390360/effects-of-different-contact-angles-during-forefoot-running-on-the-stresses-of-the-foot-bones-a-finite-element-simulation-study
#5
JOURNAL ARTICLE
Huiyu Zhou, Datao Xu, Wenjing Quan, Ukadike Chris Ugbolue, Yaodong Gu
Introduction: The purpose of this study was to compare the changes in foot at different sole-ground contact angles during forefoot running. This study tried to help forefoot runners better control and improve their technical movements by comparing different sole-ground contact angles. Methods: A male participant of Chinese ethnicity was enlisted for the present study, with a recorded age of 25 years, a height of 183 cm, and a body weight of 80 kg. This study focused on forefoot strike patterns through FE analysis...
2024: Frontiers in Bioengineering and Biotechnology
https://read.qxmd.com/read/38379205/gait-biomechanics-do-not-differ-between-adolescents-with-and-without-patellofemoral-pain
#6
JOURNAL ARTICLE
Natalie Mazzella, Danielle Trowell, Aaron Fox, Natalie Saunders, Bill Vicenzino, Jason Bonacci
OBJECTIVES: To determine if adolescents with patellofemoral pain exhibit different biomechanical characteristics to asymptomatic adolescents during walking and running. METHODS: Twenty-eight adolescents with patellofemoral pain (16 male, 12 female, mean [SD] age: 14.3 [1.7] years) and 24 asymptomatic adolescents (13 male, 11 female, mean [SD] age: 14.1 [1.6] years) participated. Participants walked and ran on an instrumented treadmill in a standardized athletic shoe...
February 2024: Scandinavian Journal of Medicine & Science in Sports
https://read.qxmd.com/read/38377740/effect-of-midsole-hardness-and-surface-type-cushioning-on-landing-impact-in-heel-strike-runners
#7
JOURNAL ARTICLE
Zihan Yang, Chuyi Cui, Zhipeng Zhou, Zhiyi Zheng, Songhua Yan, Hui Liu, Feng Qu, Kuan Zhang
High loading impact associated with heel strikes causes running injuries. This study aimed to investigate how loading impact is affected by midsole hardness and running surface type. Twelve young rear-foot runners ran at a fixed speed along an 18 m runway wearing shoes with different midsole hardness (Asker C-45, C-50, C-55, C-60, from soft to hard) and on two different surfaces (rubber and concrete). We quantified vertical average loading rate (VALR) and vertical impact peak force (VIPF). We conducted midsole × surface repeated-measures ANOVA on loading impact measures, and one-sample t-tests to compare VALR with a threshold value (80 BW·s-1 )...
February 15, 2024: Journal of Biomechanics
https://read.qxmd.com/read/38376997/the-influence-of-super-shoes-and-foot-strike-pattern-on-metabolic-cost-and-joint-mechanics-in-competitive-female-runners
#8
JOURNAL ARTICLE
Eduardo Martinez, Wouter Hoogkamer, Douglas W Powell, Max R Paquette
PURPOSE: To assess the influence of "super-shoes" on metabolic cost and joint mechanics in competitive female runners, and to understand how foot strike pattern may influence the footwear effects. METHODS: Eighteen competitive female runners ran four 5-minute bouts on a force instrumented treadmill at 12.9 km·h-1 in: 1) Nike Vaporfly Next% 2TM (SUPER) and 2) Nike Pegasus 38TM (CON) in a randomized and mirrored order. RESULTS: Metabolic power was improved by 4...
February 8, 2024: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/38364508/cues-to-land-softly-and-quietly-result-in-acute-reductions-in-ground-reaction-force-loading-rates-in-runners
#9
JOURNAL ARTICLE
Lauren K Sara, Logan W Gaudette, José Roberto de Souza Júnior, Adam S Tenforde, Lindsay Wasserman, Caleb D Johnson
BACKGROUND: A common gait retraining goal for runners is reducing vertical ground reaction force (GRF) loading rates (LRs), which have been associated with injury. Many gait retraining programs prioritize an internal focus of attention, despite evidence supporting an external focus of attention when a specific outcome is desired (e.g., LR reduction). RESEARCH QUESTION: Does an external focus of attention (using cues for quiet, soft landings) result in comparable reductions in LRs to those achieved using a common internal focus (forefoot striking while barefoot)? METHODS: This observational study included 37 injured runners (18 male; mean age 36 (14) years) at the OMITTED Running Center...
February 10, 2024: Gait & Posture
https://read.qxmd.com/read/38332220/does-advanced-footwear-technology-improve-track-and-road-racing-performance-an-explorative-analysis-based-on-the-100-best-yearly-performances-in-the-world-between-2010-and-2022
#10
JOURNAL ARTICLE
Steffen Willwacher, Patrick Mai, Janina Helwig, Markus Hipper, Burkay Utku, Johanna Robbin
Advanced footwear technology (AFT) is currently being debated in sports. There is a direct evidence that distance running in AFT improves running economy. In addition, there is indirect evidence from competition performance for improved running performance from using AFTs in middle- and long-distance running and sprinting events. However, the extent to which world-class performance is affected across the full range of track and road racing events between genders has not been systematically analyzed. This study examined publicly available performance datasets of annual best track and road performances for evidence of potential systematic performance effects following the introduction of AFT...
February 8, 2024: Sports Medicine—Open
https://read.qxmd.com/read/38278965/assessing-the-effects-of-foot-strike-patterns-and-shoe-types-on-the-control-of-leg-length-and-orientation-in-running
#11
JOURNAL ARTICLE
Alessandro Garofolini, Karen J Mickle, Patrick McLaughlin, Simon B Taylor
This research investigates the stabilization of leg length and orientation during the landing phase of running, examining the effects of different footwear and foot strike patterns. Analyzing kinematic data from twenty male long-distance runners, both rearfoot and forefoot strikers, we utilized the Uncontrolled Manifold approach to assess stability. Findings reveal that both leg length and orientation are indeed stabilized during landing, challenging the hypothesis that rearfoot strikers exhibit less variance in deviations than forefoot strikers, and that increased footwear assistance would reduce these deviations...
January 26, 2024: Scientific Reports
https://read.qxmd.com/read/38257403/effects-of-minimalist-vs-traditional-running-shoes-on-abdominal-lumbopelvic-muscle-activity-in-women-running-at-different-speeds-a-randomized-cross-over-clinical-trial
#12
RANDOMIZED CONTROLLED TRIAL
María García-Arrabé, Marta de la Plaza San Frutos, Alberto Bermejo-Franco, Rebeca Del Prado-Álvarez, Javier López-Ruiz, José Angel Del-Blanco-Muñiz, María-José Giménez
This study aimed to investigate if the characteristics of different running shoes could influence intra-abdominal pressure during running. A single-centre, randomized, prospective cross-over clinical trial was performed measuring activity patterns of internal oblique (IO), lumbar erector (LE), and gluteus maximus (GM) muscles in healthy women when running with minimalist shoes (MS). Participants were randomly allocated into two-sequence (MS/TS or TS/MS) treadmill running at six, nine, and eleven km/h. The surface electromyographic activity of IO, LE, and GM muscles were recorded while running...
January 5, 2024: Sensors
https://read.qxmd.com/read/38246957/influence-of-changes-in-foot-morphology-and-temperature-on-bruised-toenail-injury-risk-during-running
#13
JOURNAL ARTICLE
Yang Song, Xuanzhen Cen, Dong Sun, István Bíró, Zhuqing Mao, Yufei Fang, Yaodong Gu
Despite runners frequently suffering from dermatologic issues during long distance running, there is no compelling evidence quantitatively investigating their underlying injury mechanism. This study aimed to determine the foot morphology and temperature changes during long distance running and reveal the effect of these alterations on the injury risk of bruised toenail by measuring the subjective-perceived hallux comfort and gap length between the hallux and toebox of the shoe. Ten recreational runners participated in the experimental tests before (baseline), immediately after 5 and 10 km of treadmill running (12 km/h), in which the foot morphology was measured by a 3D foot scanner, the foot temperature was detected by an infrared camera, the perceived comfort was recorded by a visual analogue scale, and the gap length in the sagittal plane was captured by a high-speed camera...
January 21, 2024: Scientific Reports
https://read.qxmd.com/read/38217109/modeling-running-via-optimal-control-for-shoe-design
#14
JOURNAL ARTICLE
Anette Peko Hosoi, Sarah Fay
Shoe manufacturing technology is advancing faster than new shoe designs can viably be evaluated in human subject trials. To aid in the design process, this paper presents a model for estimating how new shoe properties will affect runner performance. This model assumes runners choose their gaits to optimize an intrinsic, unknown objective function. To learn this objective function, a simple two-dimensional mechanical model of runners was used to predict their gaits under different objectives, and the resulting gaits were compared to data from real running trials...
January 13, 2024: Journal of Biomechanical Engineering
https://read.qxmd.com/read/38199089/center-of-mass-motion-and-plantar-pressure-distribution-during-walking-in-overweight-individuals
#15
JOURNAL ARTICLE
Hyun Kyung Kim, Hang Qu, Li-Shan Chou
BACKGROUND: Gait imbalance has been reported in overweight individuals and could further impair their mobility and quality of life. As the feet are the most distal part of the body and sensitively interface with external surroundings, evaluating the plantar pressure distribution can provide critical insights into their roles in regulating gait balance control. Therefore, the purpose of this study was to evaluate the effect of body weight and different gait speeds on the plantar pressure distribution and whole-body center of mass (COM) motion during walking...
January 5, 2024: Gait & Posture
https://read.qxmd.com/read/38164950/greater-foot-and-footwear-mechanical-work-associated-with-less-ankle-joint-work-during-running
#16
JOURNAL ARTICLE
Emily S Matijevich, Eric C Honert, Fan Yang, Wing-Kai Lam, Benno M Nigg
Footwear energy storage and return is often suggested as one explanation for metabolic energy savings when running in Advanced Athletic Footwear. However, there is no common understanding of how footwear energy storage and return facilitates changes in muscle and joint kinetics. The purpose of this study was to evaluate the magnitude and timing of foot, footwear and lower limb joint powers and work while running in Advanced and Traditional Athletic Footwear. Fifteen runners participated in an overground motion analysis study...
January 2, 2024: Sports Biomechanics
https://read.qxmd.com/read/38139541/effects-of-artificially-induced-leg-length-discrepancy-on-treadmill-based-walking-and-running-symmetry-in-healthy-college-students-a-lab-based-experimental-study
#17
JOURNAL ARTICLE
Maria Korontzi, Ioannis Kafetzakis, Dimitris Mandalidis
Leg length discrepancy (LLD) is a common postural deviation of musculoskeletal origin, which causes compensatory reactions and often leads to injury. The aim of the study was to investigate the effect of artificially induced LLD on gait symmetry by means of the spatiotemporal gait parameters and ground reaction forces (GRFs) using a treadmill equipped with capacitive sensors (instrumented) as well as the EMG activity of trunk and hip muscles during walking and running. Twenty-six healthy male and female college students were required to perform two sets of four 2...
December 8, 2023: Sensors
https://read.qxmd.com/read/38133108/the-influence-of-general-and-local-muscle-fatigue-on-kinematics-and-plantar-pressure-distribution-during-running-a-systematic-review-and-meta-analysis
#18
REVIEW
Walaaeldin Aly Hazzaa, Laura Hottenrott, Manar Ahmed Kamal, Klaus Mattes
Fatigue has the potential to alter how impact forces are absorbed during running, heightening the risk of injury. Conflicting findings exist regarding alterations in both kinematics and plantar pressure. Thus, this systematic review and subsequent meta-analysis were conducted to investigate the impact of general and localized muscle fatigue on kinematics and plantar pressure distribution during running. Initial searches were executed on 30 November 2021 and updated on 29 April 2023, encompassing PubMed, The Cochrane Library, SPORTDiscus, and Web of Science without imposing any restrictions on publication dates or employing additional filters...
December 6, 2023: Sports
https://read.qxmd.com/read/38073161/influence-of-footwear-selection-on-youth-running-biomechanics-a-pilot-study
#19
JOURNAL ARTICLE
Andrew G Traut, J J Hannigan, Justin A Ter Har, Christine D Pollard
BACKGROUND: The relationship of running biomechanics, footwear, and injury has been studied extensively in adults. There has been little research on the effects of footwear on running biomechanics in youth. HYPOTHESIS: Running biomechanics of youth will be significantly affected by changes in footwear. Minimal shoe running will demonstrate similarities to barefoot. STUDY DESIGN: Crossover study design: randomized trial. LEVEL OF EVIDENCE: Level 2...
December 10, 2023: Sports Health
https://read.qxmd.com/read/38034865/the-potential-impact-of-advanced-footwear-technology-on-the-recent-evolution-of-elite-sprint-performances
#20
JOURNAL ARTICLE
Joel Mason, Dominik Niedziela, Jean-Benoit Morin, Andreas Groll, Astrid Zech
BACKGROUND: Elite track and field sprint performances have reached a point of stability as we near the limits of human physiology, and further significant improvements may require technological intervention. Following the widely reported performance benefits of new advanced footwear technology (AFT) in road-running events, similar innovations have since been applied to sprint spikes in hope of providing similar performance enhancing benefits. However, it is not yet clear based on current evidence whether there have been subsequent improvements in sprint performance...
2023: PeerJ
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