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1.
Rev. bras. ciênc. mov ; 29(2): [1-16], abr.-jun. 2021. ilus
Article in English | LILACS | ID: biblio-1364002

ABSTRACT

Scapular dyskinesis is an abnormality in scapula static or dynamic position. There are several techniques for scapular dyskinesis conservative treatment, including Kinesio Tape application, which is used to promote and support scapula joint alignment, decrease pain and improve local muscle control. The study aim to investigate the effect of kinesio tape on scapular kinematics in subjects with scapular dyskinesis. Fourteen subjects with scapular dyskinesis performed flexion and scaption movements in two conditions: (1) without load and (2) holding a dumbbell. A scapular tape was applied over the lower trapezius (Y shaped) muscle with a 20% tension. Kinematic data were captured with 10 infrared cameras and analyzed based on Euler angles, peak values of upward rotation, internal rotation, and posterior tilt angles. To compare the situations with and without kinesio tape the repeated measures two-way ANOVAs (α = 0.05) was performed using SPSS software. Scapular tape increase upward rotation and posterior tilt during flexion of the shoulder. No interaction (Load x KT) was found during flexion, suggesting that KT effect in the peak values is the same, regardless the load condition. Scapular tape decreases internal rotation during scaption and a significant interaction was found between load x KT, suggesting the effect of using KT could depend the load u sed during this movement. The results suggest that kinesio tape may can be use as assistant to increase upward rotation, posterior tilt and decrease internal rotation in scapular dyskinesis subjects. (AU)


Subject(s)
Humans , Male , Female , Adult , Shoulder , Torsion Abnormality , Biomechanical Phenomena , Athletic Tape , Musculoskeletal Abnormalities , Pain , Scapula , Kinesiology, Applied , Superficial Back Muscles , Abnormal Involuntary Movement Scale , Joints , Movement , Muscles
2.
Fisioter. pesqui ; 16(3): 252-257, jul.-set. 2009. ilus, tab, graf
Article in Portuguese | LILACS | ID: lil-539086

ABSTRACT

O objetivo do estudo é apresentar a dinâmica inversa como um método complementar da avaliação fisioterapêutica. Para isso, serão determinados os picos de momento proximal resultante (MPR) e força proximal resultante (FPR) do ombro durante a elevação no plano escapular em três diferentes situações de carga: sem carga (SC), com peso livre (HA) e com resistência elástica (RE). Participaram do estudo 21 indivíduos do sexo masculino, os quais foram analisados por meio de videogrametria. Cada indivíduo realizou cinco repetições de elevação no plano escapular em cada situação de carga. Um modelo matemático tridimensional foi utilizado para o cálculo do MPR e da FPR. Foi realizada uma análise descritiva dos dados de comportamento da FPR e do MPR, os quais serão apresentados por meio dos seus valores médios a cada 10º de amplitude. Os picos da FPR nas situações SC, HA e RE no eixo x foram, respectivamente: 25 N, 49N, 49 N; no eixo y: 37N, 71 N, 41 N; no eixo z: 28 N, 53 N, 49 N. Já os resultados do MPR no eixo x nas situações SC, HA e RE foram, respectivamente: -7 N, - 21 N, -18 N; no eixo y: -1 N, -4 N, -3 N; no eixo z: 6 N, 19 N, 18 N. A sugestão da dinâmica inversa como um complemento da avaliação fisioterapêutica é uma tentativa de estabelecer possíveis informações objetivas durante a avaliação para que estas possam servir como uma base concreta no planejamento de um programa de reabilitação do ombro...


The objective of this study is present the inverse dynamics as a complementary method of physiotherapeutic assessment. For this reason, will be determined the proximal net moment (PNM) and proximal net force (PNF) peaks of the shoulder during the elevation in the scapular plane in three different loads situations: without load (WL), with free load (FL) and with elastic resistance (ER). Twenty-one male subjects participated in the study and were analysed by videogrametry. Each subject performed five repetitions of shoulder elevation in the scapular plane in each load situation. A three-dimensional mathematic model was used to calculate the PNM and PNF. A descriptive data analysis was made in the PNM and PNF behavior data, wich will be presented by their mean values every 10 degrees of range. The PNF peaks in the situations WL, FL and ER in the x axis were, respectively: 25 N, 49N, 49 N; in the y axis: 37N, 71 N, 41 N; in the z axis: 28 N, 53 N, 49 N. The results of MPR in the x axis in the situations WL, FL and ER were, respectively: -7 N, - 21 N, -18 N; in the y axis: -1 N, -4 N, -3 N; in the z axis: 6 N, 19 N, 18 N. The suggestion of the inverse dynamics as a complement of the physiotehrapeutic assessment is an attempt to establish possible objective information during the assessment in order to serve as a factual base in the shoulder rehabilitation program planning...


Subject(s)
Humans , Male , Biomechanical Phenomena , Shoulder Joint
3.
Rev. bras. cineantropom. desempenho hum ; 10(1)jan.-mar. 2008. tab, graf
Article in Portuguese | LILACS | ID: lil-490602

ABSTRACT

Os objetivos do presente estudo foram: (1) avaliar o torque de resistência (TR) de uma máquina de musculação para a realização do exercício de extensão dos joelhos em cadeia cinética aberta e (2) realizar um ensaio teórico a partir do comportamento do TR com o intuito de estimar as forças internas na articulação tíbio-femoral. O estudo foi realizado em dois momentos: (1) medições da máquina utilizada e (2) estimativa das forças externas (na máquina) e internas (no membro inferior). Foram utilizadas equações baseadas em um modelo mecânico bi-dimensional para o cálculo das componentes perpendiculares e axiais da força muscular (FMp e FMõ, respectivamente) e da força articular (FAp e FAõ, respectivamente), assim como de suas resultantes (forças muscular, FM; articular, FA e humana, FH). As variáveis foram mensuradas em cinco ângulos de flexão do joelho (zero, 30, 45, 60 e 90 graus). Observou-se uma redução da FH com o aumento do ângulo de flexão do joelho, enquanto FM e FA apresentam aumento. O valor da FH apresentou-se sempre menor ao valor da força resistiva (FR), indicando que a máquina reduz a sobrecarga imposta ao executante. Observa-se uma redução da FMp e FAp nos maiores ângulos de fl exão do joelho, indicando uma redução da força de cisalhamento anterior da tíbia sobre o fêmur. Percebeu-se um aumento da FAõ, devido ao aumento de FMõ, principalmente de 45 a 90 graus...


The objectives of this study were to: (1) evaluate the resistive torque of an open kinetic chain strength-training machine for performing knee extensions, and (2) perform an analysis estimating internal forces in the tibiofemoral joint. During a fi rst phase of the study, measurements were taken of the machine under analysis (external forces), and then calculations were performed to estimate forces on the lower limb (internal forces). Equations were defi ned to calculate human force (HF), and the moment of muscular force (MMF). Perpendicular muscular force (MFp) and joint force (JFp), axial muscular force (MFõ) and joint force (JFõ), and total muscular force (MF) and joint force (JF) were all calculated. Five knee angles were analyzed (zero, 30, 45, 60, and 90 degrees). A reduction was observed in HF at higher knee angles, whileMF and JF also increased at the same time. HF was always lower than the load selected on the machine, which indicatesa reduced overload imposed by the machine. The reduction observed in MFp and JFp at higher knee angles indicates alower tendency to shear the tibia in relation to the femur. At the same time, there was an increase in JFõ due to higher MFõ. The biomechanical model proposed in this study has shown itself adequate for the day-to-day needs of professionals who supervise orient strength training...


Subject(s)
Humans , Biomechanical Phenomena , Kinetics , Knee , Knee Joint , Rehabilitation , Compressive Strength
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