keyword
https://read.qxmd.com/read/38520293/prediction-of-moisture-content-for-single-maize-kernel-based-on-viscoelastic-properties-constitutive-model-and-force-time-graph
#1
JOURNAL ARTICLE
Mengmeng Qiao, Guoyi Xia, Yang Xu, Tao Cui, Chenlong Fan, Yibo Li, Shaoyun Han, Qian Jun
BACKGROUND: Rapid and accurate detection of moisture content is important to ensure maize quality. However, existing technologies for rapidly detecting moisture content often suffer from costly equipment, stringent environmental requirements, or limited accuracy. To bridge this research gap, this study proposes a simple and effective method for detecting moisture content of single maize kernels based on viscoelastic properties. RESULTS: Two types of viscoelastic experiments were conducted, involving three different parameters: relaxation tests (initial loads: 60, 80, 100 N) and frequency sweep tests (frequencies: 0...
March 23, 2024: Journal of the Science of Food and Agriculture
https://read.qxmd.com/read/38519183/artificial-saliva-induced-structural-breakdown-of-surimi-gels-with-starch-under-continuous-compressive-motions
#2
JOURNAL ARTICLE
Timilehin Martins Oyinloye, Won Byong Yoon
Food texture perception is dynamic, influenced by food properties and oral processing. Using the Repeatable Dual Extrusion Cell (RDEC), the oral processing dynamics of surimi gel with different corn starch concentrations (0-15%) in the presence of 1 ml artificial saliva or water were studied. The force-time curve showed increased peak forces with higher corn starch concentrations, peaking significantly at 10%, then decreasing at 15%. Salivary amylase played a crucial role in gel sample degradation, especially in samples with 5% starch, with a work value depletion ratio of 0...
April 2024: Food Research International
https://read.qxmd.com/read/38513181/female-national-collegiate-athletic-association-division-i-athlete-injury-prediction-by-vertical-countermovement-jump-force-time-metrics
#3
JOURNAL ARTICLE
Justin J Merrigan, Jason D Stone, William J Kraemer, Emaly A Vatne, James Onate, Josh A Hagen
Merrigan, JJ, Stone, JD, Kraemer, WJ, Vatne, EA, Onate, J, and Hagen, JA. Female National Collegiate Athletic Association Division-I athlete injury prediction by vertical countermovement jump force-time metrics. J Strength Cond Res 38(4): 783-786, 2024-Vertical countermovement jump (CMJ) assessments on force plates have been purported to screen for musculoskeletal injury risk (MSKI) but with little scientific support. Thus, this study aimed to identify associations and noncontact lower-body injury predictability with CMJ force-time metrics in female athletes...
April 1, 2024: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/38507858/impaired-performance-of-rapid-grip-in-people-with-parkinson-s-disease-and-motor-segmentation
#4
JOURNAL ARTICLE
Rebecca J Daniels, David Grenet, Christopher A Knight
Bradykinesia, or slow movement, is a defining symptom of Parkinson's disease (PD), but the underlying neuromechanical deficits that lead to this slowness remain unclear. People with PD often have impaired rates of motor output accompanied by disruptions in neuromuscular excitation, causing abnormal, segmented, force-time curves. Previous investigations using single-joint models indicate that agonist electromyogram (EMG) silent periods cause motor segmentation. It is unknown whether motor segmentation is evident in more anatomically complex and ecologically important tasks, such as handgrip tasks...
March 19, 2024: Human Movement Science
https://read.qxmd.com/read/38472602/poroelastic-characterization-and-modeling-of-subcutaneous-tissue-under-confined-compression
#5
JOURNAL ARTICLE
Jacques Barsimantov, Jordanna Payne, Mario de Lucio, Mazin Hakim, Hector Gomez, Luis Solorio, Adrian B Tepole
Subcutaneous tissue mechanics are important for drug delivery. Yet, even though this material is poroelastic, its mechanical characterization has focused on its hyperelastic response. Moreover, advancement in subcutaneous drug delivery requires effective tissue mimics such as hydrogels for which similar gaps of poroelastic data exist. Porcine subcutaneous samples and gelatin hydrogels were tested under confined compression at physiological conditions and strain rates of 0.01%/s in 5% strain steps with 2600 s of stress relaxation between loading steps...
March 12, 2024: Annals of Biomedical Engineering
https://read.qxmd.com/read/38441837/age-specific-comparisons-in-the-rate-of-force-development-of-toe-pressure-strength-and-its-association-with-the-timed-up-and-go-test
#6
JOURNAL ARTICLE
Taishiro Kamasaki, Hiroshi Otao, Shinichi Tanaka, Mizuki Hachiya, Atsuko Kubo, Hiroyuki Okawa, Asuka Sakamoto, Kazuhiko Fujiwara, Takuya Suenaga, Yo Kichize, Suguru Shimokihara, Michio Maruta, Gwanghee Han, Yasuhiro Mizokami, Takayuki Tabira
PURPOSE: It has recently been recommended that Rate of Force Development (RFD) be evaluated in addition to maximal muscle strength. There are no studies on RFD of toe pressure strength, and its importance in older adults and the extent to which it is associated with aging needs to be clarified. This study purpose was to examine the association between the RFD of toe pressure strength and timed up and go test (TUG) in an age-specific study. METHODS: This study is a cross-sectional study...
March 5, 2024: European Geriatric Medicine
https://read.qxmd.com/read/38420630/the-effect-of-moisture-content-over-the-fibre-saturation-points-on-the-impact-strength-of-wood
#7
JOURNAL ARTICLE
Mojtaba Hassan Vand, Jan Tippner
The article's main aim is to assess the mechanical behaviour of linden under high-rate loadings (impact) and its change due to changes in moisture content (MC) over fibre saturation point. For assessing the mechanical properties of green wood, mainly the data of the dried wood is not applicable since the moisture content can drastically affect the mechanical properties of the wood. By testing both dried and high-moisture-content wood, we can understand a general viewpoint toward the effect of the moisture content on the impact behaviour of the wood...
February 2024: Royal Society Open Science
https://read.qxmd.com/read/38415772/asynchronous-propagation-of-atomic-force-and-excited-electronic-charge-in-gaas-under-proton-irradiation
#8
JOURNAL ARTICLE
Wen-Hao Shi, Zun-Yi Deng, Hong-Jian Feng
The studies for the interaction of energetic particles with matter have greatly contributed to the exploration of material properties under irradiation conditions, such as nuclear safety, medical physics and aerospace applications. In this work, we theoretically simulate the non-adiabatic process for GaAs upon proton irradiation using time-dependent density functional theory, and find that the radial propagation of force on atoms and the excitation of electron in GaAs are non-synchronous process. We calculated the electronic stopping power on proton with the velocity of 0...
February 28, 2024: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://read.qxmd.com/read/38400808/conserved-mammalian-muscle-mechanics-during-eccentric-contractions
#9
JOURNAL ARTICLE
Roger W P Kissane, Graham N Askew
Skeletal muscle has a broad range of biomechanical functions, including power generation and energy absorption. These roles are underpinned by the force-velocity relationship, which comprises two distinct components: a concentric and an eccentric force-velocity relationship. The concentric component has been extensively studied across a wide range of muscles with different muscle properties. However, to date, little progress has been made in accurately characterising the eccentric force-velocity relationship in mammalian muscle with varying muscle properties...
February 24, 2024: Journal of Physiology
https://read.qxmd.com/read/38380297/nonlinear-analysis-of-the-hand-and-foot-force-time-profiles-in-the-four-competitive-swimming-strokes
#10
JOURNAL ARTICLE
Raul Filipe Bartolomeu, Pedro Rodrigues, Kamil Sokołowski, Marek Strzała, Catarina Costa Santos, Mário Jorge Costa, Tiago Manuel Barbosa
Human locomotion on water depends on the force produced by the swimmer to propel the body forward. Performance of highly complex motor tasks like swimming can yield minor variations that only nonlinear analysis can be sensitive enough to detect. The purpose of the present study was to examine the nonlinear properties of the hand/feet forces and describe their variations across the four competitive swimming strokes performing segmental and full-body swimming. Swimmers performed all-out bouts of 25 m in the four swimming strokes, swimming the full-body stroke, with the arm-pull only and with the leg kicking only...
January 2024: Journal of Human Kinetics
https://read.qxmd.com/read/38350040/propulsive-forces-and-muscle-activation-during-gait-comparisons-between-premenopausal-and-postmenopausal-midlife-women
#11
JOURNAL ARTICLE
Giovanni Gondim Tomaz, Markus Vinicius Campos Souza, Marcelo Augusto da Silva Carneiro, Mariana Luíza de Lima, Claudio Oliveira Assumpção, Fábio Lera Orsatti
OBJECTIVE: The aim of this study was to investigate whether there is a reduction in propulsive force during gait in postmenopausal women compared with premenopausal women. METHODS: Forty-four women (21 premenopausal and 23 postmenopausal women) aged 40 to 55 years were selected. The ability to reach peak propulsive forces was assessed during the step execution test. The test was performed at the usual speed on 2 nonconsecutive days, with two attempts per day, using a force platform...
February 13, 2024: Menopause: the Journal of the North American Menopause Society
https://read.qxmd.com/read/38258833/competitive-season-long-changes-in-countermovement-vertical-jump-force-time-metrics-in-female-volleyball-players
#12
JOURNAL ARTICLE
Damjana V Cabarkapa, Dimitrije Cabarkapa, Nicolas M Philipp, Andrew C Fry
Cabarkapa, DV, Cabarkapa, D, Philipp, NM, and Fry, AC. Competitive season-long changes in countermovement vertical jump force-time metrics in female volleyball players. J Strength Cond Res 38(2): e72-e77, 2024-Although force plates remain one of the most widely used tools for neuromuscular performance assessment in applied sports-specific settings, there is still a lack of scientific literature focused on studying changes in countermovement vertical jump (CVJ) performance in team sports such as volleyball, especially within the female athlete population...
February 1, 2024: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/38258832/the-relationship-between-isometric-midthigh-pull-force-time-characteristics-and-2-km-load-carrying-performance-in-trained-british-army-soldiers
#13
JOURNAL ARTICLE
Jonpaul Nevin, Kim Bowling, Charles Cousens, Robert Bambrough, Michael Ramsdale
Nevin, JP, Bowling, K, Cousens, C, Bambrough, R, and Ramsdale, M. The relationship between isometric midthigh pull force-time characteristics and 2-km load-carrying performance in trained British army soldiers. J Strength Cond Res 38(2): 360-366, 2024-Load carriage is a fundamental military occupational task. As such, the aim of this study was to assess the relationship between isometric force-time characteristics and loaded march performance. Furthermore, this study aimed to investigate the relationship between isometric force-time characteristics and standing long jump (SLJ) performance...
February 1, 2024: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/38243436/time-delayed-duffing-oscillator-in-an-active-bath
#14
JOURNAL ARTICLE
Antonio A Valido, Mattia Coccolo, Miguel A F Sanjuán
During recent decades active particles have attracted an incipient attention as they have been observed in a broad class of scenarios, ranging from bacterial suspension in living systems to artificial swimmers in nonequilibirum systems. The main feature of these particles is that they are able to gain kinetic energy from the environment, which is widely modeled by a stochastic process due to both (Gaussian) white and Ornstein-Uhlenbeck noises. In the present work, we study the nonlinear dynamics of the forced, time-delayed Duffing oscillator subject to these noises, paying special attention to their impact upon the maximum oscillations amplitude and characteristic frequency of the steady state for different values of the time delay and the driving force...
December 2023: Physical Review. E
https://read.qxmd.com/read/38241475/dose-response-relationship-for-external-workload-and-neuromsuclar-performance-over-a-female-collegiate-basketball-season
#15
JOURNAL ARTICLE
Nicolas M Philipp, Dimitrije Cabarkapa, Stryder D Blackburn, Andrew C Fry
Philipp, NM, Cabarkapa, D, Blackburn, SD, and Fry, AC. Dose-response relationship for external workload and neuromsuclar performance over a female, collegiate, basketball season. J Strength Cond Res XX(X): 000-000, 2023-The aim of this study was to investigate the relationship between external workload exposure and changes in countermovement jump force-time characteristics over the course of an entire basketball season, in a sample of National Collegiate Athletic Association Division I, female, basketball players...
January 19, 2024: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/38238912/effect-of-randall-foils-on-the-rowing-propulsive-cycle
#16
JOURNAL ARTICLE
Ricardo Cardoso, Pedro Fonseca, Márcio Goethel, J A Abraldes, Beatriz B Gomes, João Paulo Vilas-Boas, Ricardo J Fernandes
Rowing performance depends on the design and building materials used for competition. Recently, attempting to improve rowing performance, the Randall foil has been attached to the top edge of a rowing Big blade, making it spoon shaped. The current study aimed to analyse the differences between Big blades with and without Randall foils in force-related variables. Nineteen rowers performed two bouts of 90 s at maximal effort tethered rowing and differences were found in cycle average peak force (4.33 ± 1...
January 18, 2024: Sports Biomechanics
https://read.qxmd.com/read/38197028/effects-of-acute-sleep-deprivation-on-the-sequential-rate-of-torque-development-throughout-the-force-time-curve
#17
JOURNAL ARTICLE
André Dias Gonçalves, Pedro Pezarat-Correia, Carolina Vila-Chã, Gonçalo Vilhena Mendonça
Objective  The impact of sleep deprivation on the physiological determinants of explosive torque production remains poorly understood. We aimed at determining the acute effects of 24 hours of sleep deprivation on the sequential rate of torque development (RTD) obtained during plantar flexion through maximum voluntary isometric contraction (MVIC). Materials and Methods  The study included 14 healthy-young adults (8 men and 6 women). The participants visited the laboratory on 2 different occasions: without and with 24 hours of sleep deprivation...
December 2023: Sleep Science
https://read.qxmd.com/read/38188189/a-data-driven-methodology-to-comprehensively-assess-bone-drilling-using-radar-plots
#18
REVIEW
Aman Nigam, James F Kellam, Catherine G Ambrose, Bruce L Tai
BACKGROUND: The study aims to develop a data-driven methodology to assess bone drilling in preparation for future clinical trials in residency training. The existing assessment methods are either subjective or do not consider the interdependence among individual skill factors, such as time and accuracy. This study uses quantitative data and radar plots to visualize the balance of the selected skill factors. METHODS: In the experiment, straight vertical drilling was assessed across 3 skill levels: expert surgeons (N = 10), intermediate residents (postgraduate year-2-5, N = 5), and novice residents (postgraduate year-1, N = 10)...
2024: JB & JS Open Access
https://read.qxmd.com/read/38180880/unimodal-and-bimodal-curves-of-ground-reaction-force-time-profiles-identify-the-drop-jump-performance
#19
JOURNAL ARTICLE
Hsien-Te Peng, Chien-Ting Lai, Hung-Li Lin, Li-I Wang
This study aimed to investigate the kinematics and kinetics differences in ground reaction force (GRF)-time profiles with uni- and bimodal curves (UNC and BIC) during the concentric phase of the drop jump (DJ). Twenty two male Physical Education college student who met UNC ( N  = 11) or BIC ( N  = 11) of the GRF-time profile of were recruited. Two force plates and eight infrared optical cameras were synchronised to collect the GRF and motion data during DJ from a 30-cm height. The Shapiro-Wilk test was used to assess the normality of data...
January 5, 2024: Sports Biomechanics
https://read.qxmd.com/read/38150945/acute-effects-of-athletic-taping-on-arch-deformity-and-plantar-pressure-in-young-female-adults-with-flexible-flatfoot
#20
JOURNAL ARTICLE
Meihua Tang, Ziwei Zeng, Chengliang Li, Xiaoyue Hu, Lin Wang
OBJECTIVE: This work aimed to explore the acute effects of athletic taping techniques on foot arch deformity and plantar pressure in young female adults with flexible flatfoot (FFT). METHODS: Twenty young female adults with FFT were recruited in the current study. Each participant was randomly divided into two taping groups, namely, augmented low-dye (ALD) and modified low-dye (MLD). The foot arch deformity and plantar pressure were measured at baseline, after taping and after 20 min of walking...
December 22, 2023: Gait & Posture
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