Results 211 to 220 of about 23,633 (243)
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Estimation of effects of walking speed to vertical ground reaction force
International Journal of Biomechatronics and Biomedical Robotics, 2011The measurement of ground reaction force (GRF) is important in biomechanical analysis for clinical gait assessment and gait research. The GRF measured by the force plate, along with the gravity, are the only significant external forces acting on the body during gait.
Neelesh Kumar
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Quantification of Vertical Ground Reaction Forces of Popular Bilateral Plyometric Exercises
Journal of Strength and Conditioning Research, 2010The purpose of this study was to quantify the vertical ground reaction forces (VGRFs) developed during the performance of popular bilateral plyometric movements. Fourteen power-oriented track and field men of collegiate and national level randomly performed 3 trials of 9 different bilateral plyometric exercises in a single testing session.
Brian J, Wallace +6 more
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Characteristics of the Vertical Ground Reaction Force Component Prior to Gait Transition
Research Quarterly for Exercise and Sport, 2002The purpose of the study was to examine the vertical ground reaction force component when approaching the gait transition point from either a walk-to-run or run-to-walk perspective. The vertical ground reaction forces (VGRF) of five steps before gait transitions for both walk-to-run and run-to-walk were collected on a motor driven treadmill with ...
Li, L, Hamill, J
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Comparison of vertical ground reaction forces during overground and treadmill walking
Medicine & Science in Sports & Exercise, 1998The purpose of this study was to compare vertical ground reaction forces walking overground with vertical foot-belt forces for treadmill gait.Twenty-four subjects walked overground and on a treadmill at three speeds (slow, normal, and fast), and at comparable cadences and stride length at each of the speeds.
S C, White +3 more
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Veterinary and Comparative Orthopaedics and Traumatology, 2015
SummaryObjective: To compare peak vertical force (PVF) and vertical impulse (VI) data collected with one and two force plates during the same collection time period in healthy dogs at a trot.Animals: Seventeen healthy client-owned adult dogs.Methods: Vertical ground reaction force (GRF) data were collected in a crossover study design, with four ...
Stejskal, Marko +5 more
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SummaryObjective: To compare peak vertical force (PVF) and vertical impulse (VI) data collected with one and two force plates during the same collection time period in healthy dogs at a trot.Animals: Seventeen healthy client-owned adult dogs.Methods: Vertical ground reaction force (GRF) data were collected in a crossover study design, with four ...
Stejskal, Marko +5 more
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Factors Affecting Peak Vertical Ground Reaction Forces in Running
International Journal of Sport Biomechanics, 1986Nine subjects (6 males, 3 females) ranging in body mass from 90.9 to 45.5 kg ran repeated trials across a force platform while being filmed at 50 fps. The subjects ran five barefooted trials at each of three speeds: 3.35, 3.83, and 4.47 m · s−1. Force data were collected on-line and analyzed for the magnitude and temporal characteristics of the initial
Edward C. Frederick, John L. Hagy
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Effects of freezing of gait on vertical ground reaction force in Parkinson's disease
Human Movement ScienceVertical ground reaction force (vGRF) is a main kinetic gait analysis explaining body weight loading patterns. The study primarily aimed to understand effects of Freezing of gait (FoG) on vGRF in Parkinson's disease (PD). A secondary analysis for a walking dataset including biomechanical analyses for 26 PD participants (13 with FoG) was performed ...
Mohammad, Etoom +4 more
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Clustering vertical ground reaction force curves produced during countermovement jumps
Journal of Biomechanics, 2014The aim of this study is to assess and compare the performance of commonly used hierarchical, partitional (k-means) and Gaussian model-based (Expectation-Maximization algorithm) clustering techniques to appropriately identify subgroup patterns within vertical ground reaction force data, using a continuous waveform analysis.
Chris Richter, Kieran Moran
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Effect of Simulated Mass-Tunable Auxetic Midsole on Vertical Ground Reaction Force
Journal of Biomechanical Engineering, 2022Abstract When runners impact the ground, they experience a sudden peak ground reaction force (GRF), which may be up to 4× greater than their bodyweight. Increased GRF impact peak magnitude has been associated with lower limb injuries in runners.
Ryan R, Ford +3 more
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Vertical Ground Reaction Forces During Unexpected Human Slips
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 2017Falls due to slippery conditions are among the primary causes of disabling workplace injuries. Despite the extensive amount of human slip studies in the literature, only a handful of studies have reported ground reaction forces at the instant of slip initiation.
Arian Iraqi, Kurt E. Beschorner
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