Sílvia Pavão | Universidade Federal do Paraná (original) (raw)

Papers by Sílvia Pavão

Research paper thumbnail of See Profile

Intrinsic properties and functional changes in spastic muscle after application of BTX-A in child... more Intrinsic properties and functional changes in spastic muscle after application of BTX-A in children with cerebral palsy: Systematic review

Research paper thumbnail of The social profile

All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.

Research paper thumbnail of Cognitive-Motor Dual-Task Costs on Postural Sway during Sit-to-Stand Movement in Children with Cerebral Palsy

Physical Therapy

Objective: The purpose of this study was to investigate the cognitive-motor dual-task costs (DTC)... more Objective: The purpose of this study was to investigate the cognitive-motor dual-task costs (DTC) on postural sway of children with typical development (TD) and children with cerebral palsy (CP) during the sit-to-stand movement. Methods: Twenty children with TD (mean age = 9.35 y) and 17 children with CP (mean age = 8.29 y) randomly performed 3 test conditions: simple motor task, low-complexity cognitive-motor dual-task, and high-complexity cognitive-motor dual-task. The sit-to-stand movement was divided into three phases for data analysis: preparation (P1), rising (P2), and stabilization (P3). For each of these phases, the DTC were calculated by the percentage change in the center of pressure area of sway, velocity of sway, and duration variables between the simple and dual-task conditions. Analysis of variance was applied to test the group, task conditions, and interaction effects. Results: Children with CP had lower DTC than children with TD, in area of sway in P1 and P2 variable...

Research paper thumbnail of Effects of Suit-Orthosis on Postural Adjustments During Seated Reaching Task in Children With Cerebral Palsy

Pediatric physical therapy : the official publication of the Section on Pediatrics of the American Physical Therapy Association, Jul 1, 2018

To investigate suit-orthosis effects on postural sway during anticipatory and compensatory postur... more To investigate suit-orthosis effects on postural sway during anticipatory and compensatory postural adjustments (APA and CPA, respectively) in a seated reaching task performed by children with cerebral palsy (CP). Twenty-nine children were divided according to Manual Ability Classification System (MACS) I and II-III. Participants were instructed to reach forward toward an object both in a no-suit condition and in a suit-orthosis condition. Using the suit-orthosis, children at MACS II-III decreased velocity of center-of-pressure (CoP) sway during APA, whereas children at MACS I increased the anterior-posterior CoP displacement during CPA. Suit-orthosis improved postural stability in children at MACS II-III during APA. The suit may assist with arm function control during postural sway when preparing to reach for objects. Suit-orthoses in therapy should be individually prescribed considering the intended activity and person's motor impairment.

Research paper thumbnail of International classification of functioning, disability and health in children with cerebral palsy

Disability and Rehabilitation, 2012

Purpose: We intended to describe how concepts from recent models of disability have been studied ... more Purpose: We intended to describe how concepts from recent models of disability have been studied for evaluation of children with cerebral palsy (CP) and their clinical implications. Method: We revised studies that focused on the components of the International Classification of Functioning, Disability and Health (ICF) in children with CP. Results: Researchers have reported that children with CP exhibit impairments in various body functions/structures, limitations in functional activities performance and experience poorer participation outcomes than their typical peers. Moreover, it has been showed that participation of children with CP was affected by environmental factors. Conclusion: Therefore, evaluation and rehabilitation processes should be focused on the quality of life improvement by emphasizing what a child can and wants to execute within the environment. Also, environmental factors should be recognized so that barriers could be minimized and adaptations to the environment a...

Research paper thumbnail of Sex and age influence on postural sway during sit‐to‐stand movement in children and adolescents: Cross‐sectional study

International Journal of Developmental Neuroscience, 2021

We investigated the influence of sex and age in postural sway during sit‐to‐stand (STS) in childr... more We investigated the influence of sex and age in postural sway during sit‐to‐stand (STS) in children and adolescents of 5–15 years. We evaluated sway during STS in 86 typical participants. STS was divided into three phases: preparation, rising, and stabilization. We calculated for each phase: area, anterior–posterior, and medial–lateral velocity of center‐of‐pressure sway. We applied a stepwise multiple linear regression model to determine if age and sex might be predictors of postural sway during STS. Only age was associated with sway, accounting for between 6.5% and 14.6% of the variability in sway during STS. The age of the subject influences postural sway during STS, but in a small amount. This variable should be taken into account as a variable of control in the assessment of dynamic postural control. Moreover, postural stability during STS was not associated with the sex of the participants.

Research paper thumbnail of Impact of dual task on postural sway during sit-to-stand movement in children with unilateral cerebral palsy

Clinical Biomechanics, 2020

BACKGROUND To verify the effect of dual-task on postural oscillation during sit-to-stand movement... more BACKGROUND To verify the effect of dual-task on postural oscillation during sit-to-stand movement in children with Cerebral Palsy. METHODS 17 children with spastic unilateral cerebral palsy and 20 typically-developing children, aged 5 to 12 years, performed the following tasks: Simple task: sit-to-stand with arms crossed against the chest; bimanual dual-task: sit-to-stand while carrying a tray; unimanual dual-task: sit-to-stand while holding a plastic cup with one hand. For data analysis, sit-to-stand was divided in three phases: preparation (phase 1), rising (phase 2), and stabilization (phase 3). Postural control was measured using a force plate, and the variables analyzed were: area, anterior-posterior and medial-lateral velocity, and STS duration. Analysis of variance was applied to test the effects of group; task conditions and interactions. FINDINGS Children with cerebral palsy presented higher values of postural oscillation when compared to their typical pairs. Bimanual and Unimanual dual tasks presented greater postural oscillation values in sit-to-stand phase 1 compared to simple task. In bimanual dual-task, children with cerebral palsy presented lower values of velocity in phases 3, and greater postural oscillation and duration of the task when compared to single-task and unimanual dual-tasks. I. INTERPRETATION The insertion of a secondary task seems to interfere differently children with cerebral palsy, depending on the specific demands of each task. Thus, the importance of inserting dual tasks in the interventions is emphasized, considering that they are executed extensively in the day to day, and can act as facilitators or challenge in the execution of functional tasks.

Research paper thumbnail of Dual-task effects on postural sway during sit-to-stand movement in children with Down syndrome

Journal of Intellectual Disability Research, 2019

BACKGROUND Cognitive and postural tasks require common cognitive mechanisms, resulting in conflic... more BACKGROUND Cognitive and postural tasks require common cognitive mechanisms, resulting in conflicts when both tasks are simultaneously performed. The presence of neuromotor dysfunctions, such as Down syndrome, may impair coordination processes required to perform dual-tasks. The objective of this study was to investigate the dual-task effects on postural sway during sit-to-stand movements in typical children and children with Down syndrome in a cross-sectional study. METHODS Twenty six typical children (10.2 ± 2.4 years) and 21 with Down syndrome (10.3 ± 2.3 years) performed sit-to-stand in the following conditions: (1) simple task; (2) dual-task bimanual activity (DT-Bim): sit-to-stand while carrying a tray using both hands; (3) dual-task unimanual dominant activity (DT-Uni-Dom): sit-to-stand while holding a plastic cup simulating water using the dominant hand; (4) dual-task unimanual non-dominant activity (DT-Uni-Nondom): sit-to-stand movement while holding a plastic cup simulating water. For data analysis, sit-to-stand was divided into three phases: preparation (phase 1), rising (phase 2), and stabilisation (phase 3). The following variables were calculated for each phase: anterior-posterior and medial-lateral amplitude of centre-of-pressure displacement, anterior-posterior and medial-lateral velocity of centre-of-pressure sway and area of centre-of-pressure sway. RESULTS Children with Down syndrome showed greater sway than typical children in all sit-to-stand phases. Typical children showed greater anterior-posterior amplitude in phase 2 of sit-to-stand during DT-Uni Nondom compared with DT-Uni Dom. Children with Down syndrome during simple task condition showed greater and faster values sway in phases 2 and 3 of sit-to-stand movement than in DT-Bim activity, DT-Uni Dom activity and DT-Uni Nondom activity. During the condition of DT-Bim activity, these children showed lower anterior-posterior velocity of sway in phase 2 than during DT-Uni Dom activity. CONCLUSIONS Children with Down syndrome showed greater postural sway during sit-to-stand than typical children. The addition of a concurrent motor task to sit-to-stand impacted postural sway in different intensities and in different ways across groups. Dual-tasks increased body sway in typical children in the DT-Uni Nondom condition compared with dominant one. In children with Down syndrome, dual-tasks decreased body sway, apparently resulting in a postural strategy of stiffness.

Research paper thumbnail of Effects of Visual Manipulation in Sit-to-Stand Movement in Children With Cerebral Palsy

Journal of Motor Behavior, 2017

ABSTRACT The authors sought to verify the effects of vision on sit-to-stand (STS) movement perfor... more ABSTRACT The authors sought to verify the effects of vision on sit-to-stand (STS) movement performance by means of postural sway in children with cerebral palsy (CP) and typical children (TC). Participants were 42 TC and 21 children with CP. STS movement was assessed with eyes open and with eyes closed. Area and velocity of center of pressure sway were analyzed in each of the 3 STS phases. We observed greater postural sway during STS movement with eyes closed. Children with CP presented greater postural sway than TC did. Both groups exhibited greater postural instability with absence of vision expressing the role of vision to keep postural stability. Moreover, the greater postural instability was observed in children with CP.

Research paper thumbnail of Age-related Changes in Postural Sway During Sit-to-stand in Typical Children and Children with Cerebral Palsy

Journal of motor behavior, Jan 5, 2018

To assess age-related changes in postural sway during sit-to-stand (STS) in typical children (TC)... more To assess age-related changes in postural sway during sit-to-stand (STS) in typical children (TC) and children with mild cerebral palsy (CP). Thirty-five TC and 23 children with mild CP were allocated in four different age groups: 5-6, 7-9, 10-12, and 13-15 years; they all performed STS movements over a force plate. Anterior-posterior and medial-lateral amplitude of center of pressure (CoP) displacement, area and velocity of CoP sway were analyzed and compared between the age groups for TC and children with CP. TC at 5 to 6 years of age showed higher values of anterior-posterior CoP displacement and Area of CoP sway than at 10-12 years, during the stabilization phase. There were no age-related changes for CP. TC change their postural sway during the last STS phase over the years, reducing their body sway. Children with CP did not show age-related changes in sway during STS, reflecting a distinct rhythm of postural control development in this population.

Research paper thumbnail of Sensory processing disorders in children with cerebral palsy

Infant Behavior and Development, 2017

Research paper thumbnail of Functional balance and gross motor function in children with cerebral palsy

Research in Developmental Disabilities, 2014

Research paper thumbnail of Impacto de intervenção baseada em realidade virtual sobre o desempenho motor e equilíbrio de uma criança com paralisia cerebral: estudo de caso1

Revista Paulista de Pediatria, 2014

Research paper thumbnail of O ambiente virtual como interface na reabilitação pós-AVE: relato de caso

Fisioterapia em Movimento, 2013

INTRODUÇÃO: O acidente vascular encefálico (AVE) é um quadro neurológico agudo de repercussões am... more INTRODUÇÃO: O acidente vascular encefálico (AVE) é um quadro neurológico agudo de repercussões amplas, que exige de suas vítimas programas de reabilitação desafiadores na promoção da função. Nesse contexto, a Realidade Virtual (RV) é uma ferramenta de interface na reabilitação que pode gerar altos índices de motivação do paciente e permitir adaptação da terapia ao seu nível de função. OBJETIVO: Verificar o efeito da RV por meio de videogame sobre o controle postural de um indivíduo pós-AVE. MATERIAIS E MÉTODOS: Um indivíduo pós-AVE com um ano de lesão foi submetido a um protocolo de reabilitação física com videogame numa frequência de três vezes por semana por um período de 12 semanas. Anteriormente e após o programa foi realizada dinamometria por plataforma de força para análise de variáveis relacionadas ao centro de pressão (COP). RESULTADOS: Na reavaliação, observou-se que a amplitude de deslocamento médio-lateral (x) aumentou 67% na condição de olhos abertos (OA) e fechados (OF)...

Research paper thumbnail of Assessment of postural control in children with cerebral palsy: A review

Research in Developmental Disabilities, 2013

Research paper thumbnail of Intrinsic properties and functional changes in spastic muscle after application of BTX-A in children with cerebral palsy: Systematic review

Developmental Neurorehabilitation, 2014

Abstract Objective: This article aimed to review the literature to verify the effect of botulinum... more Abstract Objective: This article aimed to review the literature to verify the effect of botulinum toxin type A (BTX-A) on the intrinsic properties of spastic muscles and functionality in children with cerebral palsy (CP). A literature search was conducted in the following databases: CINAHL, SCOPUS, Web of Science and PubMed. Database searches were limited to the period from January 1993 to March 2014. A total of 2182 papers were identified, and 17 met the inclusion criteria. Only one study analyzed the effect of the toxin on muscle intrinsic properties and others analyzed the effect on functionality. BTX-A application demonstrated no changes in the passive stiffness of spastic muscle. In relation to functional level, the evidence of BTX-A effect was controversial. These studies showed methodological quality limitations that restrict the interpretation of the results for the entire CP population, which justifies the need for further randomized controlled trials.

Research paper thumbnail of Efeito da orientação domiciliar no desempenho funcional de crianças com necessidades especiais

Research paper thumbnail of Sit-to-stand movement in children with hemiplegic cerebral palsy: Relationship with knee extensor torque and social participation

Research in Developmental Disabilities, 2013

This study aimed to investigate the relationship between sit-to-stand (STS) movement, knee extens... more This study aimed to investigate the relationship between sit-to-stand (STS) movement, knee extensor torque and social participation in children with cerebral palsy (CP). Seven spastic hemiplegic CP patients (8.0 ± 2.2 years), classified by the Gross Motor Function Classification System as I and II, and 18 typical children (8.4 ± 2.3 years) participated in this study. Trunk, hips, knees, and ankles angles and temporal variables of STS movement were obtained by means of kinematics evaluation. Isokinetic evaluation was performed at 60°/s in the concentric passive mode to measure knee extensors torque. Social participation was assessed by the Assessment of Life Habits for Children (LIFE-H) scale. Results showed that children with spastic hemiplegic CP have lower knee extensor torque in the affected limb and restriction in social participation in dimensions related with fine motor control and language skills when compared to their typical peers. Except for ankle excursion in frontal plane, and ankle excursion and range in transverse plane, patients were similar to typical children regarding the strategies adopted to perform the STS movement, as well as in the participation dimensions related with gross motor function. Moreover, we found a significant non-linear correlation between knee extensors torque and some lower limb and trunk angles for children with CP. Therefore, during evaluation and rehabilitation processes, impairments in body functions and structures should be related with how much they affect a child's ability to perform functional activities, so rehabilitation protocols could be focused on individual needs.

Research paper thumbnail of Association between sensory processing and activity performance in children with cerebral palsy levels I-II on the gross motor function classification system

Brazilian Journal of Physical Therapy, 2020

Research paper thumbnail of Differences in Postural Oscillation during Quiet Stance Alone and Quiet Stance Following Sit-To-Stand Movement in Children with Cerebral Palsy

Physical Medicine and Rehabilitation - International

We evaluated differences in CoP trajectories during quiet stance alone (QSA) and quiet stance fol... more We evaluated differences in CoP trajectories during quiet stance alone (QSA) and quiet stance following sit to stand (STS) (QSFS) in typical children (TD) and children with cerebral palsy (CP). Forth two TD, 23 spastic CP were evaluated. The assessment during QSA occurred with the maintenance on a force plate during 30 seconds. For evaluation in QSFS children were instructed to rising from a bench and maintain stance for 30. We observed higher oscillation (AP and ML Amplitude of CoP displacement, Velocity and Area of CoP oscillation) in QSFS than in QSA. All the variables, except AP Amp, presented higher values for the CP group compared with TD. With exception of the variable AP Amp, all the other ones presented interaction between condition and group. CP group present higher CoP oscillation than TD, these values were higher in QSFS.

Research paper thumbnail of See Profile

Intrinsic properties and functional changes in spastic muscle after application of BTX-A in child... more Intrinsic properties and functional changes in spastic muscle after application of BTX-A in children with cerebral palsy: Systematic review

Research paper thumbnail of The social profile

All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.

Research paper thumbnail of Cognitive-Motor Dual-Task Costs on Postural Sway during Sit-to-Stand Movement in Children with Cerebral Palsy

Physical Therapy

Objective: The purpose of this study was to investigate the cognitive-motor dual-task costs (DTC)... more Objective: The purpose of this study was to investigate the cognitive-motor dual-task costs (DTC) on postural sway of children with typical development (TD) and children with cerebral palsy (CP) during the sit-to-stand movement. Methods: Twenty children with TD (mean age = 9.35 y) and 17 children with CP (mean age = 8.29 y) randomly performed 3 test conditions: simple motor task, low-complexity cognitive-motor dual-task, and high-complexity cognitive-motor dual-task. The sit-to-stand movement was divided into three phases for data analysis: preparation (P1), rising (P2), and stabilization (P3). For each of these phases, the DTC were calculated by the percentage change in the center of pressure area of sway, velocity of sway, and duration variables between the simple and dual-task conditions. Analysis of variance was applied to test the group, task conditions, and interaction effects. Results: Children with CP had lower DTC than children with TD, in area of sway in P1 and P2 variable...

Research paper thumbnail of Effects of Suit-Orthosis on Postural Adjustments During Seated Reaching Task in Children With Cerebral Palsy

Pediatric physical therapy : the official publication of the Section on Pediatrics of the American Physical Therapy Association, Jul 1, 2018

To investigate suit-orthosis effects on postural sway during anticipatory and compensatory postur... more To investigate suit-orthosis effects on postural sway during anticipatory and compensatory postural adjustments (APA and CPA, respectively) in a seated reaching task performed by children with cerebral palsy (CP). Twenty-nine children were divided according to Manual Ability Classification System (MACS) I and II-III. Participants were instructed to reach forward toward an object both in a no-suit condition and in a suit-orthosis condition. Using the suit-orthosis, children at MACS II-III decreased velocity of center-of-pressure (CoP) sway during APA, whereas children at MACS I increased the anterior-posterior CoP displacement during CPA. Suit-orthosis improved postural stability in children at MACS II-III during APA. The suit may assist with arm function control during postural sway when preparing to reach for objects. Suit-orthoses in therapy should be individually prescribed considering the intended activity and person's motor impairment.

Research paper thumbnail of International classification of functioning, disability and health in children with cerebral palsy

Disability and Rehabilitation, 2012

Purpose: We intended to describe how concepts from recent models of disability have been studied ... more Purpose: We intended to describe how concepts from recent models of disability have been studied for evaluation of children with cerebral palsy (CP) and their clinical implications. Method: We revised studies that focused on the components of the International Classification of Functioning, Disability and Health (ICF) in children with CP. Results: Researchers have reported that children with CP exhibit impairments in various body functions/structures, limitations in functional activities performance and experience poorer participation outcomes than their typical peers. Moreover, it has been showed that participation of children with CP was affected by environmental factors. Conclusion: Therefore, evaluation and rehabilitation processes should be focused on the quality of life improvement by emphasizing what a child can and wants to execute within the environment. Also, environmental factors should be recognized so that barriers could be minimized and adaptations to the environment a...

Research paper thumbnail of Sex and age influence on postural sway during sit‐to‐stand movement in children and adolescents: Cross‐sectional study

International Journal of Developmental Neuroscience, 2021

We investigated the influence of sex and age in postural sway during sit‐to‐stand (STS) in childr... more We investigated the influence of sex and age in postural sway during sit‐to‐stand (STS) in children and adolescents of 5–15 years. We evaluated sway during STS in 86 typical participants. STS was divided into three phases: preparation, rising, and stabilization. We calculated for each phase: area, anterior–posterior, and medial–lateral velocity of center‐of‐pressure sway. We applied a stepwise multiple linear regression model to determine if age and sex might be predictors of postural sway during STS. Only age was associated with sway, accounting for between 6.5% and 14.6% of the variability in sway during STS. The age of the subject influences postural sway during STS, but in a small amount. This variable should be taken into account as a variable of control in the assessment of dynamic postural control. Moreover, postural stability during STS was not associated with the sex of the participants.

Research paper thumbnail of Impact of dual task on postural sway during sit-to-stand movement in children with unilateral cerebral palsy

Clinical Biomechanics, 2020

BACKGROUND To verify the effect of dual-task on postural oscillation during sit-to-stand movement... more BACKGROUND To verify the effect of dual-task on postural oscillation during sit-to-stand movement in children with Cerebral Palsy. METHODS 17 children with spastic unilateral cerebral palsy and 20 typically-developing children, aged 5 to 12 years, performed the following tasks: Simple task: sit-to-stand with arms crossed against the chest; bimanual dual-task: sit-to-stand while carrying a tray; unimanual dual-task: sit-to-stand while holding a plastic cup with one hand. For data analysis, sit-to-stand was divided in three phases: preparation (phase 1), rising (phase 2), and stabilization (phase 3). Postural control was measured using a force plate, and the variables analyzed were: area, anterior-posterior and medial-lateral velocity, and STS duration. Analysis of variance was applied to test the effects of group; task conditions and interactions. FINDINGS Children with cerebral palsy presented higher values of postural oscillation when compared to their typical pairs. Bimanual and Unimanual dual tasks presented greater postural oscillation values in sit-to-stand phase 1 compared to simple task. In bimanual dual-task, children with cerebral palsy presented lower values of velocity in phases 3, and greater postural oscillation and duration of the task when compared to single-task and unimanual dual-tasks. I. INTERPRETATION The insertion of a secondary task seems to interfere differently children with cerebral palsy, depending on the specific demands of each task. Thus, the importance of inserting dual tasks in the interventions is emphasized, considering that they are executed extensively in the day to day, and can act as facilitators or challenge in the execution of functional tasks.

Research paper thumbnail of Dual-task effects on postural sway during sit-to-stand movement in children with Down syndrome

Journal of Intellectual Disability Research, 2019

BACKGROUND Cognitive and postural tasks require common cognitive mechanisms, resulting in conflic... more BACKGROUND Cognitive and postural tasks require common cognitive mechanisms, resulting in conflicts when both tasks are simultaneously performed. The presence of neuromotor dysfunctions, such as Down syndrome, may impair coordination processes required to perform dual-tasks. The objective of this study was to investigate the dual-task effects on postural sway during sit-to-stand movements in typical children and children with Down syndrome in a cross-sectional study. METHODS Twenty six typical children (10.2 ± 2.4 years) and 21 with Down syndrome (10.3 ± 2.3 years) performed sit-to-stand in the following conditions: (1) simple task; (2) dual-task bimanual activity (DT-Bim): sit-to-stand while carrying a tray using both hands; (3) dual-task unimanual dominant activity (DT-Uni-Dom): sit-to-stand while holding a plastic cup simulating water using the dominant hand; (4) dual-task unimanual non-dominant activity (DT-Uni-Nondom): sit-to-stand movement while holding a plastic cup simulating water. For data analysis, sit-to-stand was divided into three phases: preparation (phase 1), rising (phase 2), and stabilisation (phase 3). The following variables were calculated for each phase: anterior-posterior and medial-lateral amplitude of centre-of-pressure displacement, anterior-posterior and medial-lateral velocity of centre-of-pressure sway and area of centre-of-pressure sway. RESULTS Children with Down syndrome showed greater sway than typical children in all sit-to-stand phases. Typical children showed greater anterior-posterior amplitude in phase 2 of sit-to-stand during DT-Uni Nondom compared with DT-Uni Dom. Children with Down syndrome during simple task condition showed greater and faster values sway in phases 2 and 3 of sit-to-stand movement than in DT-Bim activity, DT-Uni Dom activity and DT-Uni Nondom activity. During the condition of DT-Bim activity, these children showed lower anterior-posterior velocity of sway in phase 2 than during DT-Uni Dom activity. CONCLUSIONS Children with Down syndrome showed greater postural sway during sit-to-stand than typical children. The addition of a concurrent motor task to sit-to-stand impacted postural sway in different intensities and in different ways across groups. Dual-tasks increased body sway in typical children in the DT-Uni Nondom condition compared with dominant one. In children with Down syndrome, dual-tasks decreased body sway, apparently resulting in a postural strategy of stiffness.

Research paper thumbnail of Effects of Visual Manipulation in Sit-to-Stand Movement in Children With Cerebral Palsy

Journal of Motor Behavior, 2017

ABSTRACT The authors sought to verify the effects of vision on sit-to-stand (STS) movement perfor... more ABSTRACT The authors sought to verify the effects of vision on sit-to-stand (STS) movement performance by means of postural sway in children with cerebral palsy (CP) and typical children (TC). Participants were 42 TC and 21 children with CP. STS movement was assessed with eyes open and with eyes closed. Area and velocity of center of pressure sway were analyzed in each of the 3 STS phases. We observed greater postural sway during STS movement with eyes closed. Children with CP presented greater postural sway than TC did. Both groups exhibited greater postural instability with absence of vision expressing the role of vision to keep postural stability. Moreover, the greater postural instability was observed in children with CP.

Research paper thumbnail of Age-related Changes in Postural Sway During Sit-to-stand in Typical Children and Children with Cerebral Palsy

Journal of motor behavior, Jan 5, 2018

To assess age-related changes in postural sway during sit-to-stand (STS) in typical children (TC)... more To assess age-related changes in postural sway during sit-to-stand (STS) in typical children (TC) and children with mild cerebral palsy (CP). Thirty-five TC and 23 children with mild CP were allocated in four different age groups: 5-6, 7-9, 10-12, and 13-15 years; they all performed STS movements over a force plate. Anterior-posterior and medial-lateral amplitude of center of pressure (CoP) displacement, area and velocity of CoP sway were analyzed and compared between the age groups for TC and children with CP. TC at 5 to 6 years of age showed higher values of anterior-posterior CoP displacement and Area of CoP sway than at 10-12 years, during the stabilization phase. There were no age-related changes for CP. TC change their postural sway during the last STS phase over the years, reducing their body sway. Children with CP did not show age-related changes in sway during STS, reflecting a distinct rhythm of postural control development in this population.

Research paper thumbnail of Sensory processing disorders in children with cerebral palsy

Infant Behavior and Development, 2017

Research paper thumbnail of Functional balance and gross motor function in children with cerebral palsy

Research in Developmental Disabilities, 2014

Research paper thumbnail of Impacto de intervenção baseada em realidade virtual sobre o desempenho motor e equilíbrio de uma criança com paralisia cerebral: estudo de caso1

Revista Paulista de Pediatria, 2014

Research paper thumbnail of O ambiente virtual como interface na reabilitação pós-AVE: relato de caso

Fisioterapia em Movimento, 2013

INTRODUÇÃO: O acidente vascular encefálico (AVE) é um quadro neurológico agudo de repercussões am... more INTRODUÇÃO: O acidente vascular encefálico (AVE) é um quadro neurológico agudo de repercussões amplas, que exige de suas vítimas programas de reabilitação desafiadores na promoção da função. Nesse contexto, a Realidade Virtual (RV) é uma ferramenta de interface na reabilitação que pode gerar altos índices de motivação do paciente e permitir adaptação da terapia ao seu nível de função. OBJETIVO: Verificar o efeito da RV por meio de videogame sobre o controle postural de um indivíduo pós-AVE. MATERIAIS E MÉTODOS: Um indivíduo pós-AVE com um ano de lesão foi submetido a um protocolo de reabilitação física com videogame numa frequência de três vezes por semana por um período de 12 semanas. Anteriormente e após o programa foi realizada dinamometria por plataforma de força para análise de variáveis relacionadas ao centro de pressão (COP). RESULTADOS: Na reavaliação, observou-se que a amplitude de deslocamento médio-lateral (x) aumentou 67% na condição de olhos abertos (OA) e fechados (OF)...

Research paper thumbnail of Assessment of postural control in children with cerebral palsy: A review

Research in Developmental Disabilities, 2013

Research paper thumbnail of Intrinsic properties and functional changes in spastic muscle after application of BTX-A in children with cerebral palsy: Systematic review

Developmental Neurorehabilitation, 2014

Abstract Objective: This article aimed to review the literature to verify the effect of botulinum... more Abstract Objective: This article aimed to review the literature to verify the effect of botulinum toxin type A (BTX-A) on the intrinsic properties of spastic muscles and functionality in children with cerebral palsy (CP). A literature search was conducted in the following databases: CINAHL, SCOPUS, Web of Science and PubMed. Database searches were limited to the period from January 1993 to March 2014. A total of 2182 papers were identified, and 17 met the inclusion criteria. Only one study analyzed the effect of the toxin on muscle intrinsic properties and others analyzed the effect on functionality. BTX-A application demonstrated no changes in the passive stiffness of spastic muscle. In relation to functional level, the evidence of BTX-A effect was controversial. These studies showed methodological quality limitations that restrict the interpretation of the results for the entire CP population, which justifies the need for further randomized controlled trials.

Research paper thumbnail of Efeito da orientação domiciliar no desempenho funcional de crianças com necessidades especiais

Research paper thumbnail of Sit-to-stand movement in children with hemiplegic cerebral palsy: Relationship with knee extensor torque and social participation

Research in Developmental Disabilities, 2013

This study aimed to investigate the relationship between sit-to-stand (STS) movement, knee extens... more This study aimed to investigate the relationship between sit-to-stand (STS) movement, knee extensor torque and social participation in children with cerebral palsy (CP). Seven spastic hemiplegic CP patients (8.0 ± 2.2 years), classified by the Gross Motor Function Classification System as I and II, and 18 typical children (8.4 ± 2.3 years) participated in this study. Trunk, hips, knees, and ankles angles and temporal variables of STS movement were obtained by means of kinematics evaluation. Isokinetic evaluation was performed at 60°/s in the concentric passive mode to measure knee extensors torque. Social participation was assessed by the Assessment of Life Habits for Children (LIFE-H) scale. Results showed that children with spastic hemiplegic CP have lower knee extensor torque in the affected limb and restriction in social participation in dimensions related with fine motor control and language skills when compared to their typical peers. Except for ankle excursion in frontal plane, and ankle excursion and range in transverse plane, patients were similar to typical children regarding the strategies adopted to perform the STS movement, as well as in the participation dimensions related with gross motor function. Moreover, we found a significant non-linear correlation between knee extensors torque and some lower limb and trunk angles for children with CP. Therefore, during evaluation and rehabilitation processes, impairments in body functions and structures should be related with how much they affect a child's ability to perform functional activities, so rehabilitation protocols could be focused on individual needs.

Research paper thumbnail of Association between sensory processing and activity performance in children with cerebral palsy levels I-II on the gross motor function classification system

Brazilian Journal of Physical Therapy, 2020

Research paper thumbnail of Differences in Postural Oscillation during Quiet Stance Alone and Quiet Stance Following Sit-To-Stand Movement in Children with Cerebral Palsy

Physical Medicine and Rehabilitation - International

We evaluated differences in CoP trajectories during quiet stance alone (QSA) and quiet stance fol... more We evaluated differences in CoP trajectories during quiet stance alone (QSA) and quiet stance following sit to stand (STS) (QSFS) in typical children (TD) and children with cerebral palsy (CP). Forth two TD, 23 spastic CP were evaluated. The assessment during QSA occurred with the maintenance on a force plate during 30 seconds. For evaluation in QSFS children were instructed to rising from a bench and maintain stance for 30. We observed higher oscillation (AP and ML Amplitude of CoP displacement, Velocity and Area of CoP oscillation) in QSFS than in QSA. All the variables, except AP Amp, presented higher values for the CP group compared with TD. With exception of the variable AP Amp, all the other ones presented interaction between condition and group. CP group present higher CoP oscillation than TD, these values were higher in QSFS.