Search Results - "Willems, P A"

Kinematics and mechanical changes with step frequency at different running speeds by Mesquita, R. M., Willems, P. A., Catavitello, G., Dewolf, A. H.

“…Purpose Running at a given speed can be achieved by taking large steps at a low frequency or on the contrary by taking small steps at a high frequency. The…”
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The rebound of the body during uphill and downhill running at different speeds by Dewolf, A H, Peñailillo, L E, Willems, P A

“…When running on the level, muscles perform as much positive as negative external work. On a slope, the external positive and negative work performed are not…”
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Kinematic patterns while walking on a slope at different speeds by Dewolf, Arthur H, Ivanenko, Yury, Zelik, Karl E, Lacquaniti, Francesco, Willems, Patrick A

“…During walking, the elevation angles of the thigh, shank and foot (i.e. the angle between the segment and the vertical) co-vary along a characteristic loop…”
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Factors facilitating or hindering meaningful staff–client interactions in people with intellectual disabilities and challenging behaviour: A systematic mixed studies review using thematic synthesis by Simons, M.A.G., Koordeman, R., Willems, A.P.A.M., Hermsen, M., Rooijackers, L.M., Otten, R.

“…Background Interactions with professional caregivers affect the quality of support and life of people with intellectual disabilities and contribute to the…”
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Effect of load and speed on the energetic cost of human walking by Bastien, G J, Willems, P A, Schepens, B, Heglund, N C

“…It is well established that the energy cost per unit distance traveled is minimal at an intermediate walking speed in humans, defining an energetically optimal…”
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Biomechanics of locomotion in Asian elephants by Genin, J J, Willems, P A, Cavagna, G A, Lair, R, Heglund, N C

“…Elephants are the biggest living terrestrial animal, weighing up to five tons and measuring up to three metres at the withers. These exceptional dimensions…”
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The mechanics of running while approaching and jumping over an obstacle by Mauroy, G., Schepens, B., Willems, P. A.

“…When leaping an obstacle, the runner increases the vertical velocity of his/her centre of mass (COM) at takeoff to augment the amplitude and duration of the…”
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The analysis of challenging relations: influences on interactive behaviour of staff towards clients with intellectual disabilities by Willems, A. P. A. M., Embregts, P. J. C. M., Bosman, A. M. T., Hendriks, A. H. C.

“…Background Relationships between support staff and clients with intellectual disability (ID) are important for quality of care, especially when dealing with…”
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Mechanics and energetics of human locomotion on sand by Lejeune, T M, Willems, P A, Heglund, N C

“…Moving about in nature often involves walking or running on a soft yielding substratum such as sand, which has a profound effect on the mechanics and…”
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Leg stiffness and joint stiffness while running to and jumping over an obstacle by Mauroy, G, Schepens, B, Willems, P.A

“…Abstract During running, muscles of the lower limb act like a linear spring bouncing on the ground. When approaching an obstacle, the overall stiffness of this…”
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The role of gravity in human walking: pendular energy exchange, external work and optimal speed by Cavagna, G. A., Willems, P. A., Heglund, N. C.

“…During walking on Earth, at 1.0 g of gravity, the work done by the muscles to maintain the motion of the centre of mass of the body ( W ext ) is reduced by a…”
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Pendular energy transduction within the step in human walking by Cavagna, G A, Willems, P A, Legramandi, M A, Heglund, N C

“…During walking, the centre of mass of the body moves like that of a 'square wheel': with each step cycle, some of its kinetic energy, E(k), is converted into…”
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Mechanical work and muscular efficiency in walking children by Schepens, B, Bastien, G J, Heglund, N C, Willems, P A

“…The effect of age and body size on the total mechanical work done during walking is studied in children of 3-12 years of age and in adults. The total…”
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Effect of an increase in gravity on the power output and the rebound of the body in human running by Cavagna, G A, Heglund, N C, Willems, P A

“…The effect of an increase in gravity on the mechanics of running has been studied by using a force platform fixed to the floor of an aircraft undergoing flight…”
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External, internal and total work in human locomotion by Willems, P A, Cavagna, G A, Heglund, N C

“…The muscle-tendon work performed during locomotion can, in principle, be measured from the mechanical energy of the centre of mass of the whole body and the…”
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The relation between intrapersonal and interpersonal staff behaviour towards clients with ID and challenging behaviour: a validation study of the Staff-Client Interactive Behaviour Inventory by Willems, A. P. A. M., Embregts, P. J. C. M., Stams, G. J. J. M., Moonen, X. M. H.

“…Background  Interpersonal staff behaviour is one of the instigating factors associated with challenging behaviour in clients with intellectual disabilities…”
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Understanding gait alterations: trunk flexion and its effects on walking neuromechanics by Núñez-Lisboa, M, Echeverría, K, Willems, P A, Ivanenko, Y, Lacquaniti, F, Dewolf, A H

“…Evolutionary and functional adaptations of morphology and postural tone of the spine and trunk are intrinsically shaped by the field of gravity in which humans…”
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Running on a slope: A collision-based analysis to assess the optimal slope by Dewolf, A.H., Willems, P.A.

“…When running, energy is lost during stance to redirect the center of mass of the body (COM) from downwards to upwards. The present study uses a collision-based…”
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A timeline of cognitive functioning in glioma patients who undergo awake brain tumor surgery: a response to Mahajan et al. and their letter to the editor by de Sain, A. M., van Zandvoort, M. J. E., Mantione, M. H. M., Huenges Wajer, I. M. C., Willems, P. W. A., Robe, P. A., Ruis, C.

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The mechanics of running in children by Schepens, B., Willems, P. A., Cavagna, G. A.

“…The effect of age and body size on the bouncing mechanism of running was studied in children aged 2-16 years. The natural frequency of the bouncing system ( f…”
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