Results 221 to 230 of about 304,985 (264)

Three-dimensional load measurements in an external fixator

Journal of Biomechanics, 2004
On the basis of a six-degree-of-freedom adjustable fracture reduction hexapod external fixator, a system which can be used for measuring axial and shear forces as well as torsion and bending moments in the fixator in vivo was developed. In a pilot study on 9 patients (7 fresh fractures and 2 osteotomies of the tibia), the load in the fixator during the
K, Seide, N, Weinrich, M E, Wenzl, D, Wolter, C, Jürgens   +4 more
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Grip force control of predictable external loads

Experimental Brain Research, 2007
The grip force used to grasp and hold an object is modulated synchronously and precisely with a self-produced load indicating predictive feedforward control. It is unclear whether an externally produced load can be anticipated with similar feedforward-timing and precision if it can be predicted, e.g., because it has a periodic time course.
J, Hermsdörfer, H, Blankenfeld
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Integrating the Internal and External Training Loads in Soccer

International Journal of Sports Physiology and Performance, 2014
Purpose:This study aimed to assess the relationships of fitness in soccer players with a novel integration of internal and external training load (TL).Design:Ten amateur soccer players performed a lactate threshold (LT) test followed by a soccer simulation (Ball-Sport Endurance and Sprint Test [BEAST90mod]).Methods:The results from the LT test were ...
Akubat, Ibrahim, Barrett, Steve, Abt, Grant   +2 more
openaire   +3 more sources

Effect of External Viscous Load on Head Movement

IEEE Transactions on Biomedical Engineering, 1984
Quantitative measurements of horizontal head rotation were obtained from normal human subjects intending to make "time optimal" trajectories between targets. By mounting large, lightweight vanes on the head, viscous damping B, up to 15 times normal could be added to the usual mechanical load of the head.
M H, Nam, V, Lakshminarayanan, L W, Stark   +2 more
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The influence of external load configuration on trunk biomechanics and spinal loading during sudden loading

Ergonomics, 2018
Sudden loading is a major risk factor for work-related lower back injuries among occupations involving manual material handling (MMH). The current study explored the effects of external weight configuration on trunk biomechanics and trunk rotational stiffness in the sagittal plane during sudden loading.
Saman, Madinei, Hossein, Motabar, Xiaopeng, Ning   +2 more
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Spinal loads as influenced by external loads: A combined in vivo and in silico investigation

Journal of Biomechanics, 2015
Knowledge of in vivo spinal loads and muscle forces remains limited but is necessary for spinal biomechanical research. To assess the in vivo spinal loads, measurements with telemeterised vertebral body replacements were performed in four patients.
Thomas, Zander, Marcel, Dreischarf, Hendrik, Schmidt, Georg, Bergmann, Antonius, Rohlmann   +4 more
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Evaluation of the Match External Load in Soccer: Methods Comparison

International Journal of Sports Physiology and Performance, 2017
Purpose:To test the interchangeability of 2 match-analysis approaches for external-load detection considering arbitrary selected speeds and metabolic power (MP) thresholds in male top-level soccer.Methods:Data analyses were performed considering match physical performance of 60 matches (1200 player cases) of randomly selected Spanish, German, and ...
CASTAGNA, CARLO, Varley, M, Póvoas Araújo, S, D'OTTAVIO, STEFANO   +3 more
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Improved Helicopter External-Sling-Load Capability

Journal of the American Helicopter Society, 1961
Abstract : Helicopters flying with various external loads have experienced situations wherein the load became so unstable that either the load had to be released or the speed had to be reduced drastically. A solution to the greater part of this external-load problem was found in the design of a new sling harness, commonly referred to as a swing.
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External and internal air loads on sounding rockets.

Journal of Spacecraft and Rockets, 1967
This paper discusses two important forms of loading experienced by sounding rockets: the running loads due to distributed aerodynamics, and loads due to aerodynamically induced pressure differentials across the skin and across internal bulkheads. An empirical method, based upon experimental data, for the rapid and accurate determination of distributed ...
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On the instabilities of an externally loaded shallow spherical shell∗

International Journal of Non-Linear Mechanics, 1982
Abstract The simple von Karman model of a clamped shallow elastic cap subjected to external pressure is reformulated as an elementary catastrophe. Conceptual understanding of load deflection behavior is substantially improved as a result. Three distinct modes of deflection behavior are identified.
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