To evaluate normative data of shoulder isokinetic strength in healthy professional judo athletes.... more To evaluate normative data of shoulder isokinetic strength in healthy professional judo athletes. Methods: Cross-sectional study with 20 professional male and female athletes (10 female), evaluated with an isokinetic dynamometer. The strength assessment was carried out in external and internal rotation, flexion, extension, adduction and abduction. All data collected on muscle torque were normalized with body mass index. Results: Athletes demonstrated higher peak torque and joint work in shoulder adduction, abduction, flexion, and extension for the dominant limb compared to the non-dominant limb (p <0.05), with most of these deficits below 10%. Shoulder internal/external rotation ratios for male and female athletes had no significant differences between dominant and non-dominant sides, demonstrating values at 60 degrees/s of 49.4 +/- 7.2 on the dominant side of males and 49.1 +/- 4.9 for females. Conclusion: The normative data are described to assist during treatment, return to sp...
Orientador: Ricardo Machado Leite de BarrosDissertação (mestrado) - Universidade Estadual de Camp... more Orientador: Ricardo Machado Leite de BarrosDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação FisicaResumo: O propósito deste trabalho foi comparar dois protocolos para análise cinemática de velocistas em função das velocidades, segmentos corporais e ângulos articulares durante a marcha e a corrida. Um protocolo utiliza marcadores fixados diretamente sobre a pele e outro utiliza marcadores montados sobre estruturas rígidas fixadas no segmento corporal. Seis velocistas do sexo masculino, usando ambos os protocolos, andaram a 5 Km/h e correram a 20 Km/h, em uma esteira ergométrica. Os velocistas foram representados por um modelo tridimensional constituído por quinze segmentos corporais: cabeça, tórax, pelve, pés, pernas, coxas, braços e antebraços. Foram utilizadas oito câmeras de vídeo digital (120 Hz) para aquisição das imagens e a calibração das câmeras e reconstrução das coordenadas 3D dos marcadores foram feitas no software Dvideo®. O tratamento e a...
Objective: To evaluate normative data of shoulder isokinetic strength in healthy professional jud... more Objective: To evaluate normative data of shoulder isokinetic strength in healthy professional judo athletes. Methods: Cross-sectional study with 20 professional male and female athletes (10 female), evaluated with an isokinetic dynamometer. The strength assessment was carried out in external and internal rotation, flexion, extension, adduction and abduction. All data collected on muscle torque were normalized with body mass index. Results: Athletes demonstrated higher peak torque and joint work in shoulder adduction, abduction, flexion, and extension for the dominant limb compared to the non-dominant limb (p <0.05), with most of these deficits below 10%. Shoulder internal/external rotation ratios for male and female athletes had no significant differences between dominant and non-dominant sides, demonstrating values at 60°/s of 49.4 ± 7.2 on the dominant side of males and 49.1 ± 4.9 for females. Conclusion: The normative data are described to assist during treatment, return to sp...
The purpose of this study was to compare the two main types of marker sets for human body represe... more The purpose of this study was to compare the two main types of marker sets for human body representation based on rigid clusters of markers and skin surface markers for measuring kinematics during walking and running. Velocity, body segment, and joint angle were considered in the comparison of both protocols. Six male athletes were studied during treadmill gait at 1.4 and 5.5 m/s and recorded with 8 high speed video cameras. The subjects used simultaneously both protocols in the same walking and running cycles, in order to compare the variability in the determination of the joint centers' positions and the joint angles calculated from each protocol. The three-way ANOVA results showed that the variability of the inter-markers distance in the skin surface protocol was higher than that in the rigid clusters of markers, as reported in the literature. However, no statistical differences between the protocols were found in the variability of the determination of the joint centers'...
O proposito deste trabalho foi comparar dois protocolos para analise cinematica de velocistas em ... more O proposito deste trabalho foi comparar dois protocolos para analise cinematica de velocistas em funcao das velocidades, segmentos corporais e ângulos articulares durante a marcha e a corrida. Um protocolo utiliza marcadores fixados diretamente sobre a pele e outro utiliza marcadores montados sobre estruturas rigidas fixadas no segmento corporal. Seis velocistas do sexo masculino, usando ambos os protocolos, andaram a 5 Km/h e correram a 20 Km/h, em uma esteira ergometrica. Os velocistas foram representados por um modelo tridimensional constituido por quinze segmentos corporais: cabeca, torax, pelve, pes, pernas, coxas, bracos e antebracos. Foram utilizadas oito câmeras de video digital (120 Hz) para aquisicao das imagens e a calibracao das câmeras e reconstrucao das coordenadas 3D dos marcadores foram feitas no software Dvideo®. O tratamento e analise dos dados foram feitos em ambiente Matlab??7.0. Os resultados mostraram que a variabilidade do comprimento dos segmentos e das distâ...
The rearfoot angle (RFA) is a biomechanical variable widely used to determine the rearfoot motion... more The rearfoot angle (RFA) is a biomechanical variable widely used to determine the rearfoot motion (RM). Shoe manufacturers began to develop running shoes with RM control that would supposedly alter foot-ground interaction mechanics and neutralize excessive pronation or supination; moreover, some studies have not shown differences in rearfoot motion in shod condition compared to barefoot. This study intended to answer three questions: Do the shoes runners wear correspond to their respective barefoot RM? Does the eversion angle change during shod running, regardless the shoes worn? Can footwear designed for a specific RM (supination, pronation, neutral) correct or neutralize the eversion angle of runners? One hundred and eleven runners (38.6 ± 9.7years; 74.9 ± 12.0kg; 1.74 ± 0.08 m), who ran an average of 32 ± 17km/week, were included in this cross-sectional study. They had their RFA measured by a motion capture system when running barefoot and wearing their habitual running shoes (sh...
The aim of this study was to assess the asymmetry during jumping between the lower limbs of femal... more The aim of this study was to assess the asymmetry during jumping between the lower limbs of female elite athletes from the Brazilian National Volleyball team. A biomechanical evaluation of two kinds of jumps (countermovement and drop) was carried out, leading to the calculation of kinetic and kinematic variables, which were related to the athletes’ clinical complaints. We found important asymmetries in all athletes, and, in almost cases, it was possible to associate with their complaints. Additionally, the identified movement patterns have been described in the literature as being risky, potentially causing musculoskeletal lesions, or as indicators of a neuromuscular deficit. This investigation was useful in order to set up a physical training regime capable of minimizing asymmetries, and thus, decreasing the joint overload, aiming the prevention of injuries.
To evaluate normative data of shoulder isokinetic strength in healthy professional judo athletes.... more To evaluate normative data of shoulder isokinetic strength in healthy professional judo athletes. Methods: Cross-sectional study with 20 professional male and female athletes (10 female), evaluated with an isokinetic dynamometer. The strength assessment was carried out in external and internal rotation, flexion, extension, adduction and abduction. All data collected on muscle torque were normalized with body mass index. Results: Athletes demonstrated higher peak torque and joint work in shoulder adduction, abduction, flexion, and extension for the dominant limb compared to the non-dominant limb (p <0.05), with most of these deficits below 10%. Shoulder internal/external rotation ratios for male and female athletes had no significant differences between dominant and non-dominant sides, demonstrating values at 60 degrees/s of 49.4 +/- 7.2 on the dominant side of males and 49.1 +/- 4.9 for females. Conclusion: The normative data are described to assist during treatment, return to sp...
Orientador: Ricardo Machado Leite de BarrosDissertação (mestrado) - Universidade Estadual de Camp... more Orientador: Ricardo Machado Leite de BarrosDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação FisicaResumo: O propósito deste trabalho foi comparar dois protocolos para análise cinemática de velocistas em função das velocidades, segmentos corporais e ângulos articulares durante a marcha e a corrida. Um protocolo utiliza marcadores fixados diretamente sobre a pele e outro utiliza marcadores montados sobre estruturas rígidas fixadas no segmento corporal. Seis velocistas do sexo masculino, usando ambos os protocolos, andaram a 5 Km/h e correram a 20 Km/h, em uma esteira ergométrica. Os velocistas foram representados por um modelo tridimensional constituído por quinze segmentos corporais: cabeça, tórax, pelve, pés, pernas, coxas, braços e antebraços. Foram utilizadas oito câmeras de vídeo digital (120 Hz) para aquisição das imagens e a calibração das câmeras e reconstrução das coordenadas 3D dos marcadores foram feitas no software Dvideo®. O tratamento e a...
Objective: To evaluate normative data of shoulder isokinetic strength in healthy professional jud... more Objective: To evaluate normative data of shoulder isokinetic strength in healthy professional judo athletes. Methods: Cross-sectional study with 20 professional male and female athletes (10 female), evaluated with an isokinetic dynamometer. The strength assessment was carried out in external and internal rotation, flexion, extension, adduction and abduction. All data collected on muscle torque were normalized with body mass index. Results: Athletes demonstrated higher peak torque and joint work in shoulder adduction, abduction, flexion, and extension for the dominant limb compared to the non-dominant limb (p <0.05), with most of these deficits below 10%. Shoulder internal/external rotation ratios for male and female athletes had no significant differences between dominant and non-dominant sides, demonstrating values at 60°/s of 49.4 ± 7.2 on the dominant side of males and 49.1 ± 4.9 for females. Conclusion: The normative data are described to assist during treatment, return to sp...
The purpose of this study was to compare the two main types of marker sets for human body represe... more The purpose of this study was to compare the two main types of marker sets for human body representation based on rigid clusters of markers and skin surface markers for measuring kinematics during walking and running. Velocity, body segment, and joint angle were considered in the comparison of both protocols. Six male athletes were studied during treadmill gait at 1.4 and 5.5 m/s and recorded with 8 high speed video cameras. The subjects used simultaneously both protocols in the same walking and running cycles, in order to compare the variability in the determination of the joint centers' positions and the joint angles calculated from each protocol. The three-way ANOVA results showed that the variability of the inter-markers distance in the skin surface protocol was higher than that in the rigid clusters of markers, as reported in the literature. However, no statistical differences between the protocols were found in the variability of the determination of the joint centers'...
O proposito deste trabalho foi comparar dois protocolos para analise cinematica de velocistas em ... more O proposito deste trabalho foi comparar dois protocolos para analise cinematica de velocistas em funcao das velocidades, segmentos corporais e ângulos articulares durante a marcha e a corrida. Um protocolo utiliza marcadores fixados diretamente sobre a pele e outro utiliza marcadores montados sobre estruturas rigidas fixadas no segmento corporal. Seis velocistas do sexo masculino, usando ambos os protocolos, andaram a 5 Km/h e correram a 20 Km/h, em uma esteira ergometrica. Os velocistas foram representados por um modelo tridimensional constituido por quinze segmentos corporais: cabeca, torax, pelve, pes, pernas, coxas, bracos e antebracos. Foram utilizadas oito câmeras de video digital (120 Hz) para aquisicao das imagens e a calibracao das câmeras e reconstrucao das coordenadas 3D dos marcadores foram feitas no software Dvideo®. O tratamento e analise dos dados foram feitos em ambiente Matlab??7.0. Os resultados mostraram que a variabilidade do comprimento dos segmentos e das distâ...
The rearfoot angle (RFA) is a biomechanical variable widely used to determine the rearfoot motion... more The rearfoot angle (RFA) is a biomechanical variable widely used to determine the rearfoot motion (RM). Shoe manufacturers began to develop running shoes with RM control that would supposedly alter foot-ground interaction mechanics and neutralize excessive pronation or supination; moreover, some studies have not shown differences in rearfoot motion in shod condition compared to barefoot. This study intended to answer three questions: Do the shoes runners wear correspond to their respective barefoot RM? Does the eversion angle change during shod running, regardless the shoes worn? Can footwear designed for a specific RM (supination, pronation, neutral) correct or neutralize the eversion angle of runners? One hundred and eleven runners (38.6 ± 9.7years; 74.9 ± 12.0kg; 1.74 ± 0.08 m), who ran an average of 32 ± 17km/week, were included in this cross-sectional study. They had their RFA measured by a motion capture system when running barefoot and wearing their habitual running shoes (sh...
The aim of this study was to assess the asymmetry during jumping between the lower limbs of femal... more The aim of this study was to assess the asymmetry during jumping between the lower limbs of female elite athletes from the Brazilian National Volleyball team. A biomechanical evaluation of two kinds of jumps (countermovement and drop) was carried out, leading to the calculation of kinetic and kinematic variables, which were related to the athletes’ clinical complaints. We found important asymmetries in all athletes, and, in almost cases, it was possible to associate with their complaints. Additionally, the identified movement patterns have been described in the literature as being risky, potentially causing musculoskeletal lesions, or as indicators of a neuromuscular deficit. This investigation was useful in order to set up a physical training regime capable of minimizing asymmetries, and thus, decreasing the joint overload, aiming the prevention of injuries.
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