Encontrados 30 documentos, a visualizar página 1 de 3
Anticipatory postural adjustments during sitting reach movement in post-stroke ...
Pereira, Soraia; Silva, Cláudia C.; Ferreira, Sílvia; Silva, Cláudia; Oliveira, Nuno; Santos, Rubim; Vilas Boas, João; Correia, Miguel V.The study assessed the effect of velocity of arm movement on the generation of APAs in the contralateral and ipsilateral muscles of individuals with stroke in the sitting position. In the sitting position, 10 healthy and 8 post-stroke subjects reached for an object placed at the scapular plane and mid-sternum height at self-selected and fast velocities. Electromyography was recorded from the anterior deltoid (A...
The influence of pauses on the fatigue of upper limb muscles during the task of...
Fernandes, Ângela; Santos, Rubim; Rocha, Nuno; Tavares, João ManuelThe aim of this study was to analyze the influence of position and pauses on muscle activity and fatigue during the task of ironing. Ten female participants performed the task of ironing in two different positions (standing and sitting) for 10 min each with a 1-min pause at the end of each task. Muscle activity and fatigue from the upper trapezium, anterior deltoid, and pectoralis major were analyzed using surf...
Influence of wearing an unstable shoe construction on compensatory control of p...
Sousa, Andreia S. P.; Macedo, Rui; Santos, Rubim; Tavares, João ManuelThis study investigated the influence of wearing unstable shoe construction (WUS) on compensatory postural adjustments (CPA) associated with external perturbations. Thirty-two subjects stood on a force platform resisting an anterior-posterior horizontal force applied to a pelvic belt via a cable, which was suddenly released. They stood under two conditions: barefoot and WUS. The electromyographic (EMG) activity...
Influence of long-term wearing of unstable shoes on compensatory control of pos...
Sousa, Andreia S. P.; Silva, Andreia; Macedo, Rui; Santos, Rubim; Tavares, João ManuelPurpose: This study investigated the influence of long-term wearing of unstable shoes (WUS) on compensatory postural adjustments (CPA) to an external perturbation. Methods: Participants were divided into two groups: one wore unstable shoes while the other wore conventional shoes for 8 weeks. The ground reaction force signal was used to calculate the anterior– posterior (AP) displacement of the centre of pressur...
Interlimb coordination during the stance phase of gait in subjects with stroke
Sousa, Andreia S. P.; Silva, Augusta; Santos, Rubim; Sousa, Filipa; Tavares, João ManuelObjective: To analyze the relation between contralesional and ipsilesional limbs in subjects with stroke during step-to-step transition of walking. Design: Observational, transversal, analytical study with a convenience sample. Setting: Physical medicine and rehabilitation clinic. Participants: Subjects (nZ16) with poststroke hemiparesis with the ability to walk independently and healthy controls (nZ22). Interv...
Activation timing of soleus and tibialis anterior muscles during sit-to-stand a...
Silva, Augusta; Santos, Rubim; Sousa, Andreia S. P.; Pinheiro, Ana Rita; Ferraz, Joana; Tavares, João Manuel; Sousa, FilipaO documento em anexo encontra-se na versão post-print (versão corrigida pelo editor). ; Introduction: Sit-to-stand (SitTS) and stand-to-sit (StandTS) are very important functional tasks that become compromised in stroke patients. As in other voluntary movements, they require an adequate postural control (PC) involving the generation of anticipatory postural adjustments (APAs). In order to give clues for more e...
Force and pressure analysis during occasional loaded gait
Castro, Marcelo Peduzzi; Santos, Rubim; Abreu, Sofia; Sousa, Helena; Machado, Leandro; Vilas Boas, JoãoO documento em anexo encontra-se na versão pre-print (versão inicial enviada para o editor). ; The aim of this study was to compare the ground reaction forces and plantar pressure parameters between unloaded and occasional loaded gait. The ground reaction forces and plantar pressure of 60 participants were recorded during unloaded and occasional loaded gait (wearing a backpack which raises the participant´s bo...
Ankle dynamic in stroke patients: agonist vs. antagonist muscle relations
Silva, Augusta; Sousa, Andreia S. P.; Tavares, João Manuel; Tinoco, Ana; Santos, Rubim; Sousa, FilipaO documento em anexo encontra-se na versão post-print (versão corrigida pelo editor). ; Introduction: Atypical ankle patterns of muscle activity during gait are commonly reported in patients with stroke. These findings can be due to changes between tibialis anterior (TA) and soleus (SOL) coactivation mechanisms. Objective: To compare the electromyographic activity (EMGa) of SOL and TA muscles and antagonist co...
Soleus activity in post-stroke subjects: movement sequence from standing to sit...
Silva, Augusta; Pinheiro, Ana Rita; Sousa, Andreia S. P.; Tavares, João Manuel; Santos, Rubim; Sousa, FilipaO documento em anexo encontra-se na versão post-print (versão corrigida pelo editor). ; Introduction: The beginning of the movement sequence from standing to sitting requires the modulation of plantar flexors activity, including soleus muscle (SOL), to allow the forward translation of the tibia in relation to the foot, preserving its antigravity function. Purpose: To analyze the SOL activity during the initial...
Influence of wearing an unstable shoe on thigh and leg muscle activity and veno...
Sousa, Andreia S. P.; Tavares, João Manuel; Macedo, Rui; Rodrigues, Albano; Santos, RubimPurpose: To quantify the effect of unstable shoe wearing on muscle activity and haemodynamic response during standing. Methods: Thirty volunteers were divided into 2 groups: the experimental group wore an unstable shoe for 8 weeks, while the control group used a conventional shoe for the same period. Muscle activity of the medial gastrocnemius, tibialis anterior, rectus femoris and biceps femoris and venous cir...
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