Postural adjustments preceding rapid arm movements in parkinsonian subjects
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Cited by (50)
Increasing speed to improve arm movement and standing postural control in Parkinson's disease patients when catching virtual moving balls
2014, Gait and PostureCitation Excerpt :Their arm movements tend to be slower and less forceful than those of controls [1,2]. In addition, their postural responses, including anticipatory postural adjustments (APA) and compensatory postural reactions, are usually slower and of smaller amplitude than those of controls [3–5]. PD patients also have difficulty modifying the magnitude and patterns of postural responses according to task demands [6].
Gait disorders
2013, Handbook of Clinical NeurologyCitation Excerpt :Furthermore, coordination between the lower limbs as well as between upper and lower limbs is impaired during walking in parkinsonian compared to age-matched healthy subjects (Dietz and Colombo, 1996; Winogrodzka et al., 2005; Dietz, 2006; Dietz and Michel, 2008). Defective coordination of upper and lower limbs (Swinnen et al., 1997; Winogrodzka et al., 2005), in combination with reduced arm swing (Carpinella et al., 2007), and abnormal postural reactions to voluntary movements (Rogers et al., 1987) might contribute to the impaired performance of obstacle avoidance locomotion in Parkinson disease (van Hedel et al., 2006). However, coupling of upper and lower limbs seems to be basically preserved, while an enhanced anticipatory activation of spinal interneuronal circuits subserving movements of upper limbs might compensate for an insufficient lower limb activation (Dietz and Michel, 2008).
Adaptation to cyclic stance perturbations in Parkinson's disease depends on postural demands
2008, Parkinsonism and Related DisordersCitation Excerpt :Difficulties in response scaling [1–5], response selection [1,3,6–9], force control [10–13] and in proprioceptively driven responses [7,14] are believed to underlay this impairment. Self-initiated maneuvers during stance and locomotion, too, are often associated with impaired postural adjustments [15–18]. In recent years there is a growing understanding of the critical role that the basal ganglia have in the selection and activation of motor programs that deal with ongoing behavioral situations [19,20], including direct downstream influences on brainstem postural and locomotor mechanisms [19].
Cortical control of erector spinae muscles during arm abduction in humans
2008, Gait and PostureCitation Excerpt :The erector spinae constitute a large axial muscle group that contribute to the execution of gross trunk movement and stability required for upright posture in humans [1]. They are a complex set of muscles with a multi-segmental innervation from the spinal nerves [2] and can be activated both during purposeful back extension and in movements requiring postural control [3–6]. Rather little is known about their voluntary control.
An experimentally confirmed statistical model on arm movement
2004, Human Movement ScienceCoordination of axial rotation and step execution: Deficits in Parkinson's disease
2003, Gait and Posture