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Journal articles on the topic 'Running load'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Promsri, Arunee, Siriyakorn Deedphimai, Petradda Promthep, and Chonthicha Champamuang. "Impacts of Wearable Resistance Placement on Running Efficiency Assessed by Wearable Sensors: A Pilot Study." Sensors 24, no. 13 (2024): 4399. http://dx.doi.org/10.3390/s24134399.

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Wearable resistance training is widely applied to enhance running performance, but how different placements of wearable resistance across various body parts influence running efficiency remains unclear. This study aimed to explore the impacts of wearable resistance placement on running efficiency by comparing five running conditions: no load, and an additional 10% load of individual body mass on the trunk, forearms, lower legs, and a combination of these areas. Running efficiency was assessed through biomechanical (spatiotemporal, kinematic, and kinetic) variables using acceleration-based wear

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Nummela, Ari T., Esa Hynynen, Jussi Mikkola, Ville Vesterinen, and Laura Hokka. "Training Load in Constant Load and Interval Running Exercises." Medicine & Science in Sports & Exercise 43, Suppl 1 (2011): 801. http://dx.doi.org/10.1249/01.mss.0000402229.06378.13.

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Morunkov, A. N., S. V. Timokhin, I. A. Spitsyn, A. A. Orekhov, and A. S. Ivanov. "Results of experimental studies of cold running-in of a diesel engine D-240 with increased load-rate modes." IOP Conference Series: Earth and Environmental Science 953, no. 1 (2022): 012041. http://dx.doi.org/10.1088/1755-1315/953/1/012041.

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Abstract Currently used diesel engine running-in methods are based mainly on typical technologies with the use of serial running-in and braking stands, which have limited speed and capacity for cold and hot running-in at idle and under load of all types of modern diesel engines, available in agricultural enterprises. In addition, typical running-in technologies have a number of technological, economic and environmental drawbacks. Taking into account high cost of up-to-date running-in equipment and low level of equipment of enterprises with serial running-in equipment, including those with long

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Krupko, Valery, Svitlana Yermakova, and Alexsandr Schukin. "Modeling of the process of forming loads on the supporting and running elements of self-propelled jib cranes." Bulletin of Kharkov National Automobile and Highway University, no. 95 (December 16, 2021): 114. http://dx.doi.org/10.30977/bul.2219-5548.2021.95.0.114.

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Factors influencing the load of crane elements are considered. A technique has been developed that allows modeling the process of forming loads on the support and running elements of self-propelled jib cranes taking into account the mechanical characteristics of support platforms, structural parameters of cranes, their supporting and running elements under different operating conditions and load modes of cranes.

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Marqués-Jiménez, Diego, Julio Calleja-González, Iñaki Arratibel-Imaz, and Nicolás Terrados. "Match Loads May Predict Neuromuscular Fatigue and Intermittent-Running Endurance Capacity Decrement after a Soccer Match." International Journal of Environmental Research and Public Health 19, no. 22 (2022): 15390. http://dx.doi.org/10.3390/ijerph192215390.

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How the match-derived load metrics relate to post-match fatigue in soccer is scarcely researched. Thus, the aim of this study was to determine the associations between soccer match-related internal and external loads, neuromuscular performance decrease and intermittent-running endurance capacity decrement immediately post-match. Vertical jump (countermovement jump), straight-line sprinting (10- and 20-m sprint), change of direction ability (T-test) and intermittent-running endurance capacity (YO-YO intermittent recovery level 2) were measured one day before and immediately after a friendly mat

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Qian, Xia Yi, Chen Bo Yin, and Feng Ma. "Methods for Determining the Dynamic Load of the Shipbuilding Gantry Crane." Advanced Materials Research 605-607 (December 2012): 1288–94. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1288.

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Aim at the difficulty in determining the dynamic load , dynamic problems were analyzed, including three mechanisms of the shipbuilding gantry crane of lifting、trolley running and cart running under the joint starting and braking by adopting the method for determining the dynamic load based on the vibration theory and the one for determining the dynamic load based on the virtual prototype.Dynamic models and virtual prototype model were established and the time-varying dynamic loads of mechanisms were determined under typical working conditions. The maximum dynamic load obtained provides a refer

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Ren, Fang, An-Qi Shi, and Zhao-Jian Yang. "Research on load identification of mine hoist based on improved support vector machine." Transactions of the Canadian Society for Mechanical Engineering 42, no. 3 (2018): 201–10. http://dx.doi.org/10.1139/tcsme-2017-0049.

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To solve the problem of indirect identification of dynamic load of a mine hoist, a novel identification method based on running speed is proposed. In this paper, the simulation model with variable frequency speed regulation by vector control was established in Matlab/Simulink. By setting the acceleration of different time periods, the mine hoist running characteristics under different loads can be accurately simulated, and the coupling relationship between the running speed characteristic and the system load characteristic can be obtained. The support vector machine (SVM) with grid search(GS)/

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Russo, Luca, Eleonora Montagnani, Daniel Buttari, et al. "Track Running Shoes: A Case Report of the Transition from Classical Spikes to “Super Spikes” in Track Running." Applied Sciences 12, no. 20 (2022): 10195. http://dx.doi.org/10.3390/app122010195.

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Research on high-tech running shoes is increasing but few studies are available about the use of high-tech track spike shoes (super spikes), despite their growing popularity among running athletes. The aim of this case study was to investigate kinematics, kinetics, and plantar pressures of an Olympic running athlete using two different types of shoes, to provide an easy and replicable method to assess their influence on running biomechanics. The tested athlete performed six running trials, at the same speed, wearing a pair of normal spikes shoes (NSS) and a super spikes shoe (SSS), in random o

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Blakely, Megan J., Kyle Wilson, Paul N. Russell, and William S. Helton. "The Impact of Cognitive Load on Volitional Running." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 60, no. 1 (2016): 1179–83. http://dx.doi.org/10.1177/1541931213601276.

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The effects of physical activity on cognition and the effects of cognitive load on physical activity are complex. Both the nature of the physical activity and cognitive task may influence the interactive effects of performing a physical task while also performing a cognitive task. In a previous study examining the impact of increasing cognitive load on outdoor running speed and the impact of outdoor running on cognitive performance, Blakely et al. (2015) found running speed decreased as cognitive load increased. They also found that the impact of running itself on cognitive performance occurre

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Yoon, Sung Cheol. "A Study on the Fatigue Test of Truck Materials for Railway Vehicles." Key Engineering Materials 627 (September 2014): 405–8. http://dx.doi.org/10.4028/www.scientific.net/kem.627.405.

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The truck that is used as running equipment for freight car support is a core structural part that supports the load of the car body and that greatly influences the safety of freights and vehicles, as well as their running performance. The running equipment is composed of truck frames, wheels and wheel axles, independent suspensions, and brakes. Among these components, the truck frame supporting the load of the vehicles and freights may be the most important one. This study was carried out to analyze the structure of truck frames and to determine whether they are safe when the maximum vertical

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Fisher, Paul, Maria Faulkner, Michael McCann, and Rónán Doherty. "The Association between Pre-Season Running Loads and Injury during the Subsequent Season in Elite Gaelic Football." Sports 10, no. 8 (2022): 117. http://dx.doi.org/10.3390/sports10080117.

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The aim of this study was to determine if the quantity of running load performed in pre-season affects the incidence of injury in elite Gaelic footballers. It was hypothesized that a greater quantity of running loads completed will reduce the incidence rate of injury. A cohort of elite male Gaelic football players (n = 25) was prospectively monitored throughout one full season. This longitudinal study involved the collection of GPS data and injury data. Participants were retrospectively divided into two groups and assigned to a high (HTL, completed >50% of pre-season sessions, n = 13) or lo

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Yoon, Sung Cheol, Jeong Guk Kim, Kwang Sun Baik, Byeong Choon Goo, and Kang Youn Choe. "A Study on the Fracture Test in Railroad Truck." Key Engineering Materials 488-489 (September 2011): 210–13. http://dx.doi.org/10.4028/www.scientific.net/kem.488-489.210.

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The truck that is used as running equipment for freight car support is a core structural part that supports the load of the car body and that greatly influences the safety of freights and vehicles, as well as their running performance. The running equipment is composed of truck frames, wheels and wheel axles, independent suspensions, and brakes. Among these components, the truck frame supporting the load of the vehicles and freights may be the most important one. This study was carried out to analyze the structure of truck frames and to determine whether they are safe when the maximum vertical

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Strike, Siobhan C., Oliver Wickett, Marlene Schoeman, and Ceri E. Diss. "Mechanisms to absorb load in amputee running." Prosthetics and Orthotics International 36, no. 3 (2012): 318–23. http://dx.doi.org/10.1177/0309364612450577.

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Background: We aimed to determine if a shock absorbing pylon (SAP) influenced the ground reaction force characteristics and the shock absorbing mechanisms compared to a rigid pylon (Rigid) during the loading phase in running. Objectives: To determine if the SAP influences the mechanisms of loading compared to the Rigid condition. Study Design: A convenience sample of transtibial amputees participated in a laboratory-based study. The prosthetic set-up was randomly altered fd\sdsd. Methods: Five recreationally active male transtibial amputees age: 18–50 years; mean mass: 86.7 ± 17.5 kg; height:

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Hoshiya, Masaru, and Osamu Maruyama. "Identification of Running Load and Beam System." Journal of Engineering Mechanics 113, no. 6 (1987): 813–24. http://dx.doi.org/10.1061/(asce)0733-9399(1987)113:6(813).

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Silder, Amy, Thor Besier, and Scott L. Delp. "Running with a load increases leg stiffness." Journal of Biomechanics 48, no. 6 (2015): 1003–8. http://dx.doi.org/10.1016/j.jbiomech.2015.01.051.

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Liew, Bernard X. W., Susan Morris, and Kevin Netto. "Trunk-pelvis coordination during load carriage running." Journal of Biomechanics 109 (August 2020): 109949. http://dx.doi.org/10.1016/j.jbiomech.2020.109949.

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HUNTER, JESSICA G., GINA L. GARCIA, JAE KUN SHIM, and ROSS H. MILLER. "Fast Running Does Not Contribute More to Cumulative Load than Slow Running." Medicine & Science in Sports & Exercise 51, no. 6 (2019): 1178–85. http://dx.doi.org/10.1249/mss.0000000000001888.

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Aihara, S. "A New Running Torque Formula for Tapered Roller Bearings Under Axial Load." Journal of Tribology 109, no. 3 (1987): 471–77. http://dx.doi.org/10.1115/1.3261475.

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Conventional formula for calculating the running torque of tapered roller bearings often showed discrepancy from actual running torque, particularly under axial load. Therefore, an equation was formulated based on the knowledge of EHL rolling resistance and EHL oil film thickness. Careful examination of actual bearing running torque suggested the load dependency of EHL rolling resistance which previous theory did not include. Such load effect was confirmed by means of two disc machine and the equation was partly corrected. A new running torque formula of a tapered roller bearing under axial lo

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Yoon, Sung Cheol, Jeong Guk Kim, Sung Hyuk Park, Kwang Sun Baik, and Kang Youn Choe. "A Study on the Fracture Test in Running System of Railway." Key Engineering Materials 452-453 (November 2010): 49–52. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.49.

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This paper describes the results of structural analysis and loading test of a bogie frame. The purpose of the analysis and test is to evaluate the safety and functionality of the bogie frame under maximum load. The bogie system consist of the bogie frame, suspensions, wheel-sets, a brake system and a transmission system. Of these components, the bogie frame is the major component subjected to the vehicle and passenger loads. The evaluation method used the JIS E 4207 specifications throughout the FEM analysis and static load test. The test results have shown the bogie frame to be safe and stabl

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Zhou, Yi Hao, and Xiao Ye Qi. "Co-Simulation Study on Over-Running Load Balance in Cabin Door Hydromechanical Drive System." Advanced Materials Research 765-767 (September 2013): 392–97. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.392.

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Co-simulation based on LMS Virtual.Lab Motion and Imagine.Lab AMESim was used on aircraft cabin door hydromechanical drive system design. By analysis of 1-D hydraulic model and 3-D mechanism model co-simulation, we draw the conclusion that over-running load accounts for hydraulic motor over speed. To improve hydraulic system, the one-way throttle valve was employed to balance the over-running load according to the co-simulation results. Subsequently, the co-simulation outcome showed the improved-designed hydraulic system controlled the over-running load more effectively. Therefore, a convenien

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Anițaș, Răzvan, and Do Lucaciu. "Finite Element Analysis of the Achilles Tendon While Running." Acta Medica Marisiensis 59, no. 1 (2013): 8–11. http://dx.doi.org/10.2478/amma-2013-0002.

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AbstractIntroduction: The Achilles tendon is the most frequent recipient of traumatic injuries. The aim of this study is to identify and describe the varying load at ankle level and especially at the Achilles tendon’s insertion on the calcaneus.Methods: We conducted a finite element analysis of the Achilles tendon while running, with the aim of revealing maximal loads and strains during a step in a running sequence. A 3D model of the Achilles tendon was built, based on MRI slides of a healthy, injury-free subject, who was asked to run over a force plate in 50 iterations. We used the recorded d

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Promsri, Arunee, Siriyakorn Deedphimai, Petradda Promthep, and Chonthicha Champamuang. "Effects of Different Wearable Resistance Placements on Running Stability." Sports 12, no. 2 (2024): 45. http://dx.doi.org/10.3390/sports12020045.

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Stability during running has been recognized as a crucial factor contributing to running performance. This study aimed to investigate the effects of wearable equipment containing external loads on different body parts on running stability. Fifteen recreational male runners (20.27 ± 1.23 years, age range 19–22 years) participated in five treadmill running conditions, including running without loads and running with loads equivalent to 10% of individual body weight placed on four different body positions: forearms, lower legs, trunk, and a combination of all three (forearms, lower legs, and trun

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Yuan, Yuyang, Tobias Amann, Yuwen Xu, et al. "Load and velocity boundaries of oil-based superlubricity using 1,3-diketone." Friction 11, no. 5 (2023): 704–15. http://dx.doi.org/10.1007/s40544-022-0647-0.

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AbstractThe clarification of the critical operating conditions and the failure mechanism of superlubricity systems is of great significance for seeking appropriate applications in industry. In this work, the superlubricity region of 1,3-diketone oil EPND (1-(4-ethyl phenyl) nonane-1,3-dione) on steel surfaces was identified by performing a series of ball-on-disk rotation friction tests under various normal loads (3.5–64 N) and sliding velocities (100–600 mm/s). The result shows that beyond certain loads or velocities superlubricity failed to be reached due to the following negative effects: (1

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Dever, Dennis E., Kellen T. Krajewski, Camille C. Johnson, et al. "Increases in Load Carriage Magnitude and Forced Marching Change Lower-Extremity Coordination in Physically Active, Recruit-Aged Women." Journal of Applied Biomechanics 37, no. 4 (2021): 343–50. http://dx.doi.org/10.1123/jab.2020-0340.

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The objective was to examine the interactive effects of load magnitude and locomotion pattern on lower-extremity joint angles and intralimb coordination in recruit-aged women. Twelve women walked, ran, and forced marched at body weight and with loads of +25%, and +45% of body weight on an instrumented treadmill with infrared cameras. Joint angles were assessed in the sagittal plane. Intralimb coordination of the thigh–shank and shank–foot couple was assessed with continuous relative phase. Mean absolute relative phase (entire stride) and deviation phase (stance phase) were calculated from cont

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Galloni, Enzo, Davide Lanni, Gustavo Fontana, Gabriele D’Antuono, and Simone Stabile. "Performance Estimation of a Downsized SI Engine Running with Hydrogen." Energies 15, no. 13 (2022): 4744. http://dx.doi.org/10.3390/en15134744.

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Hydrogen is a carbon-free fuel that can be produced in many ways starting from different sources. Its use as a fuel in internal combustion engines could be a method of significantly reducing their environmental impact. In spark-ignition (SI) engines, lean hydrogen–air mixtures can be burnt. When a gaseous fuel like hydrogen is port-injected in an SI engine, working with lean mixtures, supercharging becomes very useful in order not to excessively penalize the engine performance. In this work, the performance of a turbocharged PFI spark-ignition engine fueled by hydrogen has been investigated by

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Dias, Marcelo Ricardo Cabral, Roberto Simão, Geraldo Heleno Ribeiro Machado, et al. "Relationship of Different Perceived Exertion Scales in Walking or Running with Self-Selected and Imposed Intensity." Journal of Human Kinetics 43, no. 1 (2014): 149–57. http://dx.doi.org/10.2478/hukin-2014-0100.

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Abstract The aims of this study were to: (1) compare the Heart Rate (HR) and Rating Perceived Exertion (RPE) in training with self-selected and imposed loads, and (2) associate the OMNI-Walk/Run and Borg scales with self-selected and imposed loads, both on a treadmill. Ten trained men (20.3 ± 2.0 years, 75.6 ± 9.8 kg, 175.1 ± 5.1 cm) participated in a training program with self-selected load (time and speed individually preferred) and another with imposed load (even self-selected time and speed 10% higher). The HR and RPE were measured, every minute of training, by the OMNIWalk/ Run and Borg s

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Pańtak, Marek. "Vertical Dynamic Loads on Footbridges Generated by People Running." Baltic Journal of Road and Bridge Engineering 15, no. 1 (2020): 47–75. http://dx.doi.org/10.7250/bjrbe.2020-15.461.

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This paper concerns the issue of the dynamic impact of people running on footbridges with particular with attention to various footstrike patterns occurring during the running (i.e. heel strike pattern and forefoot strike pattern). The results of a series of laboratory tests of vertical ground reaction force (VGRF) measurements generated by running people are presented along with the characteristics of the VGRF curves. Based on the results of the tests, a new proposal for a dynamic load model generated by people classified as heel strike runners has been developed, and corrections of the input

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Ishihara, Akihiko, Roland R. Roy, Yoshinobu Ohira, Yasuhiko Ibata, and V. Reggie Edgerton. "Hypertrophy of rat plantaris muscle fibers after voluntary running with increasing loads." Journal of Applied Physiology 84, no. 6 (1998): 2183–89. http://dx.doi.org/10.1152/jappl.1998.84.6.2183.

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There have been no systematic comparisons of skeletal muscle adaptations in response to voluntary wheel running under controlled loading conditions. To accomplish this, a voluntary running wheel for rats and mice was developed in which a known load can be controlled and monitored electronically. Five-week-old male Sprague-Dawley rats (10 rats/group) were assigned randomly to either a 1) sedentary control group (Control); 2) voluntary exercised with no load (Run-No-Load) group; or 3) voluntary exercised with additional load (Run-Load) group for 8 wk. The load for the Run-Load group was progress

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Wu, Xiao Gang, and Wei Yi Chen. "Experimental Study of Stress-Generated Potentials on Large Cattle Femur under Simulated Physiological Loading State." Applied Mechanics and Materials 29-32 (August 2010): 2549–54. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.2549.

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Under simulated physiological loading state (walking and running), cattle femur’s SGP was tested by INSTRON (8847) tester. Strictly speaking, the specimen was a large bone structure. Experiment results imply that human femur will also have voltage signals under the state of walking and running, and the voltage amplitude will become larger with the load and frequency increases. In addition, running’s voltage amplitude is larger than that of walking.

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Wang, Hsin-Huan, Wei-Chi Tsai, Chi-Yao Chang, et al. "Effect of Load Carriage Lifestyle on Kinematics and Kinetics of Gait." Applied Bionics and Biomechanics 2023 (February 8, 2023): 1–7. http://dx.doi.org/10.1155/2023/8022635.

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Backpacks are commonly worn by many people for multiple purposes. This study investigated the effects of habitual wearing of backpacks on lower limb kinematics and kinetics. Fourteen participants were recruited for analysis. All participants performed four randomly assigned scenarios, including running and walking at speeds of 3.5 and 1.5 m/s, respectively, with and without load carriage. The motion analysis system and force plate were used to investigate the lower limb kinematics and kinetics. A paired sample t-test was performed for statistical measurement with a significance level of α = .0

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George, Daniel, Stéphane Pallu, Céline Bourzac, et al. "Prediction of Cortical Bone Thickness Variations in the Tibial Diaphysis of Running Rats." Life 12, no. 2 (2022): 233. http://dx.doi.org/10.3390/life12020233.

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A cell-mechanobiological model is used for the prediction of bone density variation in rat tibiae under medium and high mechanical loads. The proposed theoretical-numerical model has only four parameters that need to be identified experimentally. It was used on three groups of male Wistar rats under sedentary, moderate intermittent and continuous running scenarios over an eight week period. The theoretical numerical model was able to predict an increase in bone density under intermittent running (medium intensity mechanical load) and a decrease of bone density under continuous running (higher

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Wagers, Kade D., Nicholas J. Lobb, AuraLea C. Fain, Kayla D. Seymore, and Tyler N. Brown. "Sex Impact on Knee and Ankle Muscle Extensor Forces during Loaded Running." Biomechanics 2, no. 3 (2022): 421–30. http://dx.doi.org/10.3390/biomechanics2030032.

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Background: This study determined whether the knee and ankle muscle extensor forces increase when running with a body-borne load and whether these forces differ between the sexes. Methods: Thirty-six (twenty male and sixteen female) adults had the knee and ankle extensor force quantified when running 4.0 m/s with four body-borne loads (20, 25, 30, and 35 kg). Peak normalized (BW) and unnormalized (N) extensor muscle force, relative effort, and joint angle and angular velocity at peak muscle force for both the ankle and the knee were submitted to a mixed model ANOVA. Results: Significant load b

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Napier, Christopher, Megan Ryan BSc, Carlo Menon, and Max R. Paquette. "Session Rating of Perceived Exertion Combined With Training Volume for Estimating Training Responses in Runners." Journal of Athletic Training 55, no. 12 (2020): 1285–91. http://dx.doi.org/10.4085/1062-6050-573-19.

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Context Historically, methods of monitoring training loads in runners have used simple and convenient metrics, including the duration or distance run. Changes in these values are assessed on a week-to-week basis to induce training adaptations and manage injury risk. To date, whether different measures of external loads, including biomechanical measures, provide better information regarding week-to-week changes in external loads experienced by a runner is unclear. In addition, the importance of combining internal-load measures, such as session rating of perceived exertion (sRPE), with different

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Sutcliffe, Duncan Peter, and Mark Kramer. "Exploring the utility of the 3-minute all-out running test in assessing match performance and external loads in university soccer players." PLOS One 20, no. 6 (2025): e0323655. https://doi.org/10.1371/journal.pone.0323655.

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Purpose This study evaluated the utility of the 3-minute all-out running test (3MT) in assessing match performance and physiologically relevant load metrics among male university soccer players. We aimed to explore the relationship between 3MT metrics, including critical speed (CS), finite energy reserve (D’), and maximal running speed (Smax), with key match performance indicators, while also assessing the efficacy of a modified method for tracking player load. Methods Twenty-six male university soccer players completed the 3MT to determine CS, D’, and maximal speed (Smax). Match performance d

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Wang, X., K. Kato, and K. Adachi. "Running-in effect on the load-carrying capacity of a water-lubricated SiC thrust bearing." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 219, no. 2 (2005): 117–24. http://dx.doi.org/10.1243/135065005x9727.

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It is known the friction of self-mated SiC in water strongly depends on the roughness of their contact surfaces, and a proper running-in process is the way to obtain low friction by smoothing the contact surfaces of SiC with tribochemical wear. In this paper, the running-in process of surface-contacted SiC (thrust-bearing-type contact) in water is studied experimentally. It is found the maximum running-in load has a large influence on the load-carrying capacity, which is measured as the critical load for the transition from hydrodynamic to mixed lubrication in this research. A multi-step loadi

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Liu, Cai Xia. "Running Simulation System of Distillation Columns Based on MATLAB." Advanced Materials Research 143-144 (October 2010): 444–47. http://dx.doi.org/10.4028/www.scientific.net/amr.143-144.444.

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Establish the mathematical model for distillation columns running system, and calculate configurable and performance parameter. Using MATLAB to simulate and analyze dynamic external load such as wind load and earthquake load, do the curve fitting. That provides theoretic results and simulating curve for designing and modifying column structure. New dynamic continuous computation in external load is substituted for the traditional subsection computation for the first time. Numerical superposition and curve fitting of load along the entire tower is completed. That avoids discontinuous stress in

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Sugisaki, Norihide, Kai Kobayashi, Takaya Yoshimoto, et al. "Influence of horizontal resistance loads on spatiotemporal and ground reaction force variables during maximal sprint acceleration." PLOS ONE 18, no. 12 (2023): e0295758. http://dx.doi.org/10.1371/journal.pone.0295758.

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This study aimed to elucidate the influence of horizontal resistance loads on the spatiotemporal and ground reaction force (GRF) variables during maximal sprint acceleration. Nine male sprinters (20.2 ± 1.2 years; 175.3 ± 4.5 cm, 69.7 ± 6.1 kg) performed sprint-running with six loading conditions of one unresisted and five resisted loads of 4, 6, 8, 10, and 12 kg using a resistance training device with intelligent drag technology. During the trials, the GRFs for all steps were determined using a 50-m force plate system. The spatiotemporal and GRF variables at running velocity of every 0.5 m/s

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INOMOTO, TAKEAKI, YOSHIO SAWADA, and KATSUTOSHI OGO. "THE RELATIONSHIP BETWEEN EXERCISE DIURESIS AND RUNNING LOAD." Japanese Journal of Physical Fitness and Sports Medicine 34, no. 5 (1985): 247–58. http://dx.doi.org/10.7600/jspfsm1949.34.247.

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DeVita, Paul, and Tibor Hortobagyi. "The High Load of Low Forces in Running." Medicine & Science in Sports & Exercise 36, Supplement (2004): S56—S57. http://dx.doi.org/10.1249/00005768-200405001-00265.

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DeVita, Paul, and Tibor Hortobagyi. "The High Load of Low Forces in Running." Medicine & Science in Sports & Exercise 36, Supplement (2004): S56???S57. http://dx.doi.org/10.1097/00005768-200405001-00265.

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WEARING, SCOTT C., LLOYD REED, SUE L. HOOPER, SIMON BARTOLD, JAMES E. SMEATHERS, and TORSTEN BRAUNER. "Running Shoes Increase Achilles Tendon Load in Walking." Medicine & Science in Sports & Exercise 46, no. 8 (2014): 1604–9. http://dx.doi.org/10.1249/mss.0000000000000256.

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Thorpe, Robin T., Anthony J. Strudwick, Martin Buchheit, Greg Atkinson, Barry Drust, and Warren Gregson. "The Influence of Changes in Acute Training Load on Daily Sensitivity of Morning-Measured Fatigue Variables in Elite Soccer Players." International Journal of Sports Physiology and Performance 12, s2 (2017): S2–107—S2–113. http://dx.doi.org/10.1123/ijspp.2016-0433.

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Purpose:To determine the sensitivity of a range of potential fatigue measures to daily training load accumulated over the previous 2, 3, and 4 d during a short in-season competitive period in elite senior soccer players (N = 10).Methods:Total highspeed-running distance, perceived ratings of wellness (fatigue, muscle soreness, sleep quality), countermovement-jump height (CMJ), submaximal heart rate (HRex), postexercise heart-rate recovery (HRR), and heart-rate variability (HRV: Ln rMSSD) were analyzed during an in-season competitive period (17 d). General linear models were used to evaluate the

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Wang, Hao Liang, Chun Lai Zhang, Xiang Nan Kong, and Hua Zhang. "Research on Transient Stability Simulation of Ship Power System." Advanced Materials Research 383-390 (November 2011): 2055–59. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2055.

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Based on the SIMULINK tool of MATLAB, the paper researches the ship power system, the research includes: load suddenly increased or decreased when one single generator is running, generators’ running in parallel, load suddenly increased or decreased when two generators are running in parallel. Through the analysis of the different work condition, the paper researches the transient stability of the ship power system.

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Strobbe, Senne, Jasper Lottefier, Peter Van den Broeck, and Katrien Van Nimmen. "A first step towards the development of load models for the vibration serviceability assessment of footbridges under running actions." Journal of Physics: Conference Series 2647, no. 12 (2024): 122007. http://dx.doi.org/10.1088/1742-6596/2647/12/122007.

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Abstract The state of the art involving dynamic running actions is limited to single-person load models valid for running on a rigid laboratory floor. Little to no expertise is available on running excitation as a load scenario for civil engineering structures. The development of realistic load scenarios requires input on (1) intra-person variabilities, (2) inter-person variabilities and (3) human-structure interaction phenomena, and their impact on the resulting structural response. This contribution uses vibration measurements on the lower back of running persons to identify and characterize

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Lee, Min Chul, Masahiro Okamoto, Yu Fan Liu, et al. "Voluntary resistance running with short distance enhances spatial memory related to hippocampal BDNF signaling." Journal of Applied Physiology 113, no. 8 (2012): 1260–66. http://dx.doi.org/10.1152/japplphysiol.00869.2012.

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Although voluntary running has beneficial effects on hippocampal cognitive functions if done abundantly, it is still uncertain whether resistance running would be the same. For this purpose, voluntary resistance wheel running (RWR) with a load is a suitable model, since it allows increased work levels and resultant muscular adaptation in fast-twitch muscle. Here, we examined whether RWR would have potential effects on hippocampal cognitive functions with enhanced hippocampal brain-derived neurotrophic factor (BDNF), as does wheel running without a load (WR). Ten-week-old male Wistar rats were

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Lee, Min Chul, Koshiro Inoue, Masahiro Okamoto, et al. "Voluntary resistance running induces increased hippocampal neurogenesis in rats comparable to load-free running." Neuroscience Letters 537 (March 2013): 6–10. http://dx.doi.org/10.1016/j.neulet.2013.01.005.

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Liew, Bernard, Kevin Netto, and Susan Morris. "Increase in Leg Stiffness Reduces Joint Work During Backpack Carriage Running at Slow Velocities." Journal of Applied Biomechanics 33, no. 5 (2017): 347–53. http://dx.doi.org/10.1123/jab.2016-0226.

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Optimal tuning of leg stiffness has been associated with better running economy. Running with a load is energetically expensive, which could have a significant impact on athletic performance where backpack carriage is involved. The purpose of this study was to investigate the impact of load magnitude and velocity on leg stiffness. We also explored the relationship between leg stiffness and running joint work. Thirty-one healthy participants ran overground at 3 velocities (3.0, 4.0, 5.0 m·s−1), whilst carrying 3 load magnitudes (0%, 10%, 20% weight). Leg stiffness was derived using the direct k

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Liu, Yunhai, Lei Chen, Bin Zhang, et al. "Key Role of Transfer Layer in Load Dependence of Friction on Hydrogenated Diamond-Like Carbon Films in Humid Air and Vacuum." Materials 12, no. 9 (2019): 1550. http://dx.doi.org/10.3390/ma12091550.

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The friction of hydrogenated diamond-like carbon (H-DLC) films was evaluated under the controlled environments of humid air and vacuum by varying the applied load. In humid air, there is a threshold applied load below which no obvious friction drop occurs and above which the friction decreases to a relatively low level following the running-in process. By contrast, superlubricity can be realized at low applied loads but easily fails at high applied loads under vacuum conditions. Further analysis indicates that the graphitization of the sliding H-DLC surface has a negligible contribution to the

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Lohner, T., J. Mayer, K. Michaelis, B.-R. Höhn, and K. Stahl. "On the running-in behavior of lubricated line contacts." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 231, no. 4 (2016): 441–52. http://dx.doi.org/10.1177/1350650115574869.

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The first operating period of machine elements is subject to a running-in phase. Thereby, stresses applied on the contacting surfaces are influenced by the running-in conditions including the lubricant used and can strongly affect the frictional behavior and load-carrying capacity of lubricated contacts after running-in. This study investigates the influences of operating conditions and lubricant additives on the running-in behavior of lubricated line contacts of discs and gears. Results show a strong influence of the lubricant additive on the coefficient of friction during running-in as well

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Kujawa, Molly, Aleyna Goerlitz, Drew Rutherford, and Thomas W. Kernozek. "Patellofemoral Joint Stress during Running with Added Load in Females." International Journal of Sports Medicine 41, no. 06 (2020): 412–18. http://dx.doi.org/10.1055/a-1088-5467.

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AbstractPatellofemoral joint (PFJ) pain syndrome is a commonly reported form of pain in female runners and military personnel. Increased PFJ stress may be a contributing factor. Few studies have examined PFJ stress running with added load. Our purpose was to analyze PFJ stress, PFJ reaction force, quadriceps force, knee flexion angle, and other kinematic and temporospatial variables running with and without a 9 kg load. Nineteen females ran across a force platform with no added load and 9.0 kg weight vest. Kinematic data were collected using 3D motion capture and kinetic data with a force plat

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