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1.
Acta fisiátrica ; 30(2): 105-110, jun. 2023.
Article in English | LILACS-Express | LILACS | ID: biblio-1516381

ABSTRACT

Objective: To verify the development of fatigue and sex-influence on the handgrip during dynamic contractions in typical children. Methods: Cross-section study. Fifty-eight children, distributed into two groups according to sex (30 boys), aged 8 to 12 years, of both sexes, performed successive dynamic contractions with a bulb dynamometer until they reached maximum perceived effort. The values from the first, the last contractions of the fatigue test, and the measure after 30-s of the last contraction (recovery contraction) were recorded and compared using the linear regression model with mixed effects. T-Student test was used to compare the perceived effort scores and time-to-fatigue between groups. Results: The handgrip values significantly decreased, and perceived effort scores significantly increased in the final measure in relation to the initial measure of the fatigue test. After the fatigue handgrip test, 30-sec of recovery was insufficient to restore the baseline handgrip values. There were no differences between the female and male groups for all variables. Conclusion: The handgrip fatigue test using dynamic contractions showed it efficiently induces motor and perceived fatigue in children, without differences between sexes.


Objetivo: Verificar o desenvolvimento da fadiga e a influência do sexo na preensão manual durante contrações dinâmicas em crianças típicas. Métodos: Estudo transversal. Cinquenta e oito crianças, distribuídas em dois grupos de acordo com o sexo (30 meninos), com idades entre 8 e 12 anos, de ambos os sexos, realizaram sucessivas contrações dinâmicas com um dinamômetro de bulbo até atingirem o esforço máximo percebido. Os valores da primeira, da última contração do teste de fadiga e da medida após 30 segundos da última contração (contração de recuperação) foram registrados e comparados usando o modelo de regressão linear com efeitos mistos. O teste T-Student foi usado para comparar os escores de esforço percebido e o tempo até a fadiga entre os grupos. Resultados: Os valores de preensão palmar e os escores de esforço percebido diminuíram significativamente durante o teste de fadiga. Não houve diferenças entre os grupos para todas as variáveis. Conclusão: O teste de fadiga de preensão palmar utilizando contrações dinâmicas mostrou-se eficaz na indução da fadiga motora e percebida em crianças, sem diferenças entre os sexos.

2.
Clin Biomech (Bristol, Avon) ; 102: 105861, 2023 02.
Article in English | MEDLINE | ID: mdl-36623326

ABSTRACT

BACKGROUND: The use of locomotive devices requires sufficient levels of upper limb strength. Therefore, it is important to evaluate the maximal isometric torque, rate of torque development and neuromuscular activation in youth with spina bifida. The objective was to investigate these parameters in the elbow muscles of youth with spina bifida versus healthy age-matched peers. METHODS: Forty-eight participants (8-17 years) were recruited: Spina Bifida (n = 23) and non-affected Controls (n = 25). Maximal isometric elbow flexor/extensor contractions were performed to assess maximal muscle strength (peak torque) and rate of torque development, along with synchronized electromyography recording in the biceps and triceps brachii muscles. FINDINGS: During elbow flexor contractions, Spina Bifida showed reduced rate of torque development in the early contraction phase (0-50 ms) along with lowered relative rate of torque development in the later rate of torque development phase (0-100/200/300 ms) compared to controls. Spina Bifida showed reduced rate of torque development for the elbow extensors in the later phase of rising muscle force (0-200/300 ms) compared to controls. Lower isometric peak torque and smaller triceps brachii electromyography amplitudes (0-200/300 ms) were observed during elbow extensor contractions in Ambulatory spina bifida participants vs. controls. INTERPRETATION: Although a majority of peak torque and rate of torque development parameters did not differ, significant impairments in maximal and rapid elbow muscle force characteristics were noted in Spina Bifida compared to non-affected Controls. Ambulatory and Non-ambulatory spina bifida participants demonstrated similar rate of torque development in their upper arm muscles.


Subject(s)
Arm , Upper Extremity , Adolescent , Humans , Child , Arm/physiology , Torque , Muscle, Skeletal/physiology , Electromyography , Muscle Strength/physiology , Isometric Contraction/physiology , Muscle Contraction/physiology
3.
Rev. med. (São Paulo) ; 101(5): e193651, set-out. 2022.
Article in English, Portuguese | LILACS-Express | LILACS | ID: biblio-1395425

ABSTRACT

Objetivo: A partir da produção de uma cartilha de exercícios domiciliares "Orientações para a Manutenção da Qualidade de Vida Espinha Bífida", objetivou-se validar o conteúdo, realizar a avaliação do material (cartilha) pelos cuidadores, e analisar a adesão ao uso da cartilha. Métodos: Para validação do conteúdo, 8 juízes especialistas avaliaram a cartilha por meio de um questionário adaptado e foi estabelecido o índice de validade de conteúdo (IVC) para cada aspecto abordado. Na avaliação do material realizada pelos cuidadores e na análise da adesão ao uso da cartilha, participaram 10 crianças e adolescentes com espinha bífida e seus cuidadores. O pesquisador leu a cartilha e treinou os exercícios na presença do paciente e de seu cuidador, indicando como deveriam ser realizados em domicílio. Após a entrega foi marcado um retorno presencial, em 15 dias, para que os cuidadores pudessem relatar sobre a avaliação do material assim como, descrever sobre a adesão desses participantes ao uso da cartilha. Por fim, foi agendado um segundo encontro - follow-up ­ para analisar a adesão em longo prazo. Resultados: Dos 27 aspectos abordados na validação do conteúdo, 24 destes receberam pontuação acima do índice aceitável (IVC = 1,00). A maior parte dos cuidadores responderam "concordo" ou "concordo totalmente" para todos os itens analisados referente à avaliação do material. Em curto prazo foi observada uma taxa de adesão de 25% dos participantes e em longo prazo de 12,5%. Conclusão: A cartilha "Orientações para a Manutenção da Qualidade de Vida ­ Espinha Bífida" por apresentar clareza dos itens apresentados, facilidade de leitura e adequada compreensão, segundo a avaliação dos juízes especialistas e dos cuidadores, mostrou ser um ótimo recurso para incrementar o tratamento fisioterapêutico de criança e adolescentes com espinha bífida, porém evidenciou uma moderada/baixa adesão por parte dos participantes. [au]


Objective: From the production of a booklet of home exercises "Orientações para a Manutenção da Qualidade de Vida ­ Espinha Bífida", the aim was to validate the content, carry out the evaluation of the material (booklet) by caregivers, and analyze the adherence to the use of the booklet. Methods: For content validation, 8 expert judges evaluated the booklet through an adapted questionnaire, and the content validity index (CVI) was established for each aspect addressed. In the evaluation of the material carried out by the caregivers and in the analysis of adherence to the use of the booklet, 10 children and adolescents with spina bifida participated in this study. The booklet was read with the patients and their caregivers,who were trained to perform the exercises that are in the booklet at home. After delivery, a face-to-face return was scheduled, in 15 days, so that caregivers could report on the evaluation of the material as well as describe the adherence of these participants to the use of the booklet. Finally, a second meeting was scheduled - follow-up - to analyze long-term adherence. Results: Of the 27 aspects addressed in the content validation, 24 of these received scores above the acceptable index (CVI = 1.00). Most caregivers answered "agree" or "strongly agree" to all items analyzed regarding the evaluation of the booklet. In the short term, there was an adherence rate of 25% of the participants, and in the long term, 12.5%. Conclusion: The booklet "Orientações para a Manutenção da Qualidade de Vida ­ Espinha Bífida" proved to be a great resource to increase the physical therapy treatment of children and adolescents with spina bifida, according to the evaluation of expert judges and caregivers, for presenting adequate content, language and appearance, but showed moderate/low adherence by the participants. [au]

4.
Braz J Phys Ther ; 23(1): 27-32, 2019.
Article in English | MEDLINE | ID: mdl-30243858

ABSTRACT

BACKGROUND: Cardiovascular autonomic dysfunction is associated with the development of cardiovascular diseases, but little is known about it in children and adolescents with myelomeningocele. OBJECTIVE: This study investigated the cardiovascular autonomic function in wheelchair-using children and adolescents with myelomeningocele. METHODS: Twenty-two participants were assigned to one of two groups: myelomeningocele group (n=11) and Control group (n=11). Heart rate variability and systolic blood pressure variability were collected in supine resting position using spectral analyses. Spontaneous baroreflex sensitivity was collected by time-domain through the sequence method. RESULTS: At rest, heart rate was higher in myelomeningocele group when compared to Control group (mean difference 22.1, 95% CI 4.82-39.40; p=0.01). The heart rate and systolic blood pressure variability parameters did not show differences between groups. However, myelomeningocele showed lower gain mean in baroreflex sensitivity (mean difference -4.5, 95% CI -8.47 to -0.60; p=0.02), when compared to Control. CONCLUSION: Wheelchair-using children and adolescents with myelomeningocele presented differences in the autonomic cardiovascular function. This may be associated with hypomobility due to wheelchair dependence, and venous muscle pump insufficiency due to paraplegia.


Subject(s)
Autonomic Nervous System/physiology , Baroreflex/physiology , Blood Pressure/physiology , Heart Rate/physiology , Meningomyelocele/physiopathology , Case-Control Studies , Humans , Rest , Wheelchairs
5.
Fisioter. Bras ; 7(5): 339-344, set.-out. 2006.
Article in Portuguese | LILACS | ID: lil-491171

ABSTRACT

O objetivo deste estudo foi avaliar o ganho de força e potência dos músculos rotadores mediais e laterais do ombro dominante após treinamento pliométrico. Foram avaliadas 10 voluntárias sedentárias que não apresentavam acometimento músculo-esquelético. Todas as voluntárias foram submetidas a uma avaliação física e a uma avaliação isocinética para os movimentos de rotação do ombro dominante, por meio do aparelho isocinético Cybex Norm. Posteriormente, a metade da amostra foi submetida a um programa de treinamento pliométrico para os movimentos de rotação do ombro dominante e a outra metade da amostra formou o grupo controle; após o término do treinamento, as voluntárias sofreram uma nova avaliação isocinética. Os resultados foram analisados estatisticamente utilizando-se o teste t-student não pareado, considerando significantes aqueles com p ≤ 0,05. Os resultados mostraram aumento da força para a musculatura rotadora lateral e aumento de força e potência da musculatura rotadora medial após treinamento pliométrico. Concluímos que o treinamento pliométrico é eficaz para o ganho de força da musculatura rotadora medial e lateral do ombro e, não é tão eficaz para o ganho de potência, apresentando apenas um aumento desta última para a musculatura rotadora medial do ombro dominante.


The objective of this study was to evaluate the increase of force and potency of the muscles medial and lateral rotators of the dominant shoulder after plyometric training. They were appraised 10 sedentary volunteers that they did not present muscle-skeletal attack. All the volunteers were submitted to a physical evaluation and an isokinetic evaluation for the movements of rotation of the dominant shoulder, through the isokinetic apparel Cybex Norm. Later, half of the sample was submitted to a program of plyometric training for the movements of rotation of the dominant shoulder and the other half of the sample composed the control group; after the end of the training, the volunteers suffered a new isokinetic evaluation. The results were statistical analyzed using the test t-student, considering significant those with p ≤ 0,05. The results showed increase of the force for the musculature lateral rotator and increase of force and potency of the musculature medial rotator after plyometric training. We concluded that the plyometric training is effective for the increase of strength of shoulder medial and lateral rotator muscle and, it is not so effective for the potency increase, just presenting an increase of this last one for the medial rotator muscle of the dominant shoulder.


Subject(s)
Evaluation Study , Exercise Movement Techniques , Rotator Cuff , Shoulder Joint , Exercise , Exercise Therapy
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