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Dear all,
I am examining Centre of Pressure displacements (C of P) of normal adults
during different reaching tasks. We are investigating whether anticipatory
postural adjustment are made prior to initiation of movement. We are using
MacReflex to record kinematics, a KISTLER force plate to measure both
ground reaction forces and C of P displacements, and EMG for recording
neuromuscular activity. Our experimental protocol has subjects perform 13
lifts for each of five weight conditions. Between the different weight
conditions, the individual steps off the force platform and back on for the
next lifting task. We try to ensure the same foot position for each trial
and for each subject. However, to control for intra- and inter-subject
variability which may arise from the different weight conditions and
different foot positions on the force plate, is some sort of normalization
protocol necessary when analysing C of P displacements. I want to correlate
peak C of P displacements with peak grip force and load force using a grip
force transducer created for this experiment. A summary will be forth coming.
----------------------------
Aurelija Jucaite
Motoriklab, plan -1
Barndivisionen
S:t Göransgatan 141
112 81 Stockholm
Sweden
Tel: +46 (0)8 672 47 01
Fax: +46 (0)8 672 49 15
Email: aurelija.jucaite@kbh.ki.se
----------------------------
I am examining Centre of Pressure displacements (C of P) of normal adults
during different reaching tasks. We are investigating whether anticipatory
postural adjustment are made prior to initiation of movement. We are using
MacReflex to record kinematics, a KISTLER force plate to measure both
ground reaction forces and C of P displacements, and EMG for recording
neuromuscular activity. Our experimental protocol has subjects perform 13
lifts for each of five weight conditions. Between the different weight
conditions, the individual steps off the force platform and back on for the
next lifting task. We try to ensure the same foot position for each trial
and for each subject. However, to control for intra- and inter-subject
variability which may arise from the different weight conditions and
different foot positions on the force plate, is some sort of normalization
protocol necessary when analysing C of P displacements. I want to correlate
peak C of P displacements with peak grip force and load force using a grip
force transducer created for this experiment. A summary will be forth coming.
----------------------------
Aurelija Jucaite
Motoriklab, plan -1
Barndivisionen
S:t Göransgatan 141
112 81 Stockholm
Sweden
Tel: +46 (0)8 672 47 01
Fax: +46 (0)8 672 49 15
Email: aurelija.jucaite@kbh.ki.se
----------------------------