The Strain Index (SI) has repeatedly shown high levels of validity for differentiating between safe and hazardous tasks for the distal upper extremity (DUE). One limitation of the SI is the lack of reliability data. This study was designed to evaluate the test-retest repeatability of the SI. Fifteen raters, divided into five teams of three, were asked to use the SI to analyze 73 video AVI files of different job tasks; initially as individuals and then as teams. Several months later, raters were asked to repeat individual and team job task assessments. Raters were instructed to analyze tasks using five of six SI task variables, while the sixth was held constant. For three of these task variables, additional data was collected such as peak force and duration of job cycle. Test-retest repeatability was measured using Pearson's R, Spearman's rho, and tetrachoric correlation according to the nature of the variable. Spearman's rho values for individual and team task variable ratings ranged from 0.68 to 0.96 (0.88 average). Pearson's R for task variable data ranged from 0.76 to 0.99 for both teams and individuals with an average of 0.91. The Strain Index's rho values for individuals and teams were 0.70 and 0.84, respectively. For hazard classification, the tetrachoric correlation for individuals was 0.81 and 0.88 for teams. Results of this study support the conclusion that the Strain Index is repeatable when used by teams as well as individuals.

Rewarming mildly hypothermic subjects with distal extremity rewarming has been associated with significantly greater rewarming rate compared to shivering-only as it increases heat flow to the core by opening up of arteriovenous anastomoses in the extremities. This study compared distal extremity rewarming with Fluidotherapy® or warm water, or shivering-only. Seven healthy individuals were cooled in 8°C water to either a core temperature of 35°C or a maximum of one hour. The subjects were then rewarmed with one of the three rewarming methods (distal extremity rewarming with 44°C water or 46°C Fluidotherapy® or shivering-only) on three different occasions. There was no significant difference in the afterdrop length and duration between the three conditions. Fluidotherapy® provided rewarming rates similar to the shivering-only condition. Warm water rewarming provided higher heat donation to distal extremities and lead to a threefold higher rewarming rate compared to the other two treatments.

Rewarming mildly hypothermic subjects with distal extremity rewarming has been associated with significantly greater rewarming rate compared to shivering-only as it increases heat flow to the core by opening up of arteriovenous anastomoses in the extremities. This study compared distal extremity rewarming with Fluidotherapy® or warm water, or shivering-only. Seven healthy individuals were cooled in 8°C water to either a core temperature of 35°C or a maximum of one hour. The subjects were then rewarmed with one of the three rewarming methods (distal extremity rewarming with 44°C water or 46°C Fluidotherapy® or shivering-only) on three different occasions. There was no significant difference in the afterdrop length and duration between the three conditions. Fluidotherapy® provided rewarming rates similar to the shivering-only condition. Warm water rewarming provided higher heat donation to distal extremities and lead to a threefold higher rewarming rate compared to the other two treatments.

Diss. (sammanfattning) Göteborg : Göteborgs universitet , 2007. / Härtill 5 uppsatser.

Este estudo teve como objetivo implementar um modelo biomecânico, de segmentos articulados, associado à solução inversa que permita a análise em três dimensões das forças de reação proximais e momentos proximais resultantes para diferentes gestos do membro superior. O modelo implementado é composto por cinco segmentos rígidos (mão, antebraço, braço, escápula e tronco) conectados. A resolução das equações de movimento de Newton-Euler é feita através da solução inversa. Para registro cinemático foram utilizadas cinco câmeras digitais, com freqüência de amostragem de 50 campos/seg. O modelo implementado foi avaliado de quatro formas: estimativa da acurácia da medida tridimensional obtida pela cinemetria, comparação quantitativa e qualitativa dos resultados parciais oferecidos pelo modelo implementado com resultados obtidos por instrumentos de mensuração direta (eletrogoniômetro e eletromiografia) e cálculo da propagação do erro nos valores de força de reação resultante e momento proximal líquido. Os resultados sugerem que o modelo apresenta resultados coerentes. A acurácia do sistema de videogrametria estimada foi, em média, de 1,7 (± 1,5) mm. As medidas angulares da cinemetria e eletrogoniometria divergiram em até 36°. O erro propagado no cálculo da força de reação proximal pode chegar até 25% e até 100% no cálculo do momento proximal. O sinal eletromiográfico e o momento proximal apresentaram sincronismo temporal. O modelo foi capaz de avaliar as forças de reação proximal resultantes e momentos proximais líquidos nos diferentes gestos. / The goal of this study was to implement a link segments biomechanical model, associate to the inverse solution for three dimensions analysis of proximal reaction force and proximal net moments during upper limb movement. The implemented model is composed by five connected rigid segments (hand, forearm, arm, scapula and trunk). The resolution of Newton-Euler movement equations is done through the inverse solution. For kinematics acquisition five digital cameras were used, with a frequency sample of 50 fields/sec. The implemented model was evaluated in four ways: accuracy estimation of the three-dimensional measurements, quantitative and qualitative comparison of the partial results offered by the implemented model with results obtained by instruments of direct measurements (electrogoniometer and electromyography) and calculation of the error propagation in proximal reaction force and proximal net moment values. The results suggest that the model presents coherent results. The estimated accuracy videogrammetry system was, on average, of 1.7 (± 1.5) mm. The joint angular values obtained by kinematics system and electrogoniometer diverged in 36°. The error propagation in proximal reaction force values can arrive up to 25% and up to 100% for proximal net moment. The electromyographic sign and the proximal moment presented temporary synchronism. The model was able to evaluate the proximal reaction force and proximal net moment during upper limb movement.

Este estudo teve como objetivo implementar um modelo biomecânico, de segmentos articulados, associado à solução inversa que permita a análise em três dimensões das forças de reação proximais e momentos proximais resultantes para diferentes gestos do membro superior. O modelo implementado é composto por cinco segmentos rígidos (mão, antebraço, braço, escápula e tronco) conectados. A resolução das equações de movimento de Newton-Euler é feita através da solução inversa. Para registro cinemático foram utilizadas cinco câmeras digitais, com freqüência de amostragem de 50 campos/seg. O modelo implementado foi avaliado de quatro formas: estimativa da acurácia da medida tridimensional obtida pela cinemetria, comparação quantitativa e qualitativa dos resultados parciais oferecidos pelo modelo implementado com resultados obtidos por instrumentos de mensuração direta (eletrogoniômetro e eletromiografia) e cálculo da propagação do erro nos valores de força de reação resultante e momento proximal líquido. Os resultados sugerem que o modelo apresenta resultados coerentes. A acurácia do sistema de videogrametria estimada foi, em média, de 1,7 (± 1,5) mm. As medidas angulares da cinemetria e eletrogoniometria divergiram em até 36°. O erro propagado no cálculo da força de reação proximal pode chegar até 25% e até 100% no cálculo do momento proximal. O sinal eletromiográfico e o momento proximal apresentaram sincronismo temporal. O modelo foi capaz de avaliar as forças de reação proximal resultantes e momentos proximais líquidos nos diferentes gestos. / The goal of this study was to implement a link segments biomechanical model, associate to the inverse solution for three dimensions analysis of proximal reaction force and proximal net moments during upper limb movement. The implemented model is composed by five connected rigid segments (hand, forearm, arm, scapula and trunk). The resolution of Newton-Euler movement equations is done through the inverse solution. For kinematics acquisition five digital cameras were used, with a frequency sample of 50 fields/sec. The implemented model was evaluated in four ways: accuracy estimation of the three-dimensional measurements, quantitative and qualitative comparison of the partial results offered by the implemented model with results obtained by instruments of direct measurements (electrogoniometer and electromyography) and calculation of the error propagation in proximal reaction force and proximal net moment values. The results suggest that the model presents coherent results. The estimated accuracy videogrammetry system was, on average, of 1.7 (± 1.5) mm. The joint angular values obtained by kinematics system and electrogoniometer diverged in 36°. The error propagation in proximal reaction force values can arrive up to 25% and up to 100% for proximal net moment. The electromyographic sign and the proximal moment presented temporary synchronism. The model was able to evaluate the proximal reaction force and proximal net moment during upper limb movement.

Orientador: Bruno Livani / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-21T12:14:39Z (GMT). No. of bitstreams: 1 Carvalho_JoseAndre_D.pdf: 5523749 bytes, checksum: 5c534ff80bb87a60f0d6051a9ccc279b (MD5) Previous issue date: 2012 / Resumo: A escolha do nível de amputação e da técnica cirúrgica a ser adotada nas amputações dos membros inferiores deve ser avaliada com muita atenção, pois influenciará diretamente na reabilitação física e na protetização do amputado. A preservação da articulação do joelho permitirá ao amputado uma marcha mais fisiológica e o processo de reabilitação mais funcional. Em situações específicas como nos traumas ortopédicos com lesão grave do membro inferior, a opção por uma amputação transtibial realizada imediatamente abaixo da tuberosidade tibial com manutenção da inserção do tendão patelar, pode resultar em cotos extremamente curtos, porem cotos funcionais. Amputados com cotos transtibiais extremamente curtos, com comprimento ósseo médio de 4,4cm, ao final do tratamento encontravam-se plenamente adaptados as próteses e satisfeitos com a qualidade de marcha após a reabilitação. Em situações eletivas, a indicação de amputações transtibiais clássicas podem ser substituídas por amputações com periosteoplastia tibio-fibular ou amputações com o uso do retalho plantar neuro-vascular pediculado e com fusão do calcâneo à tíbia. Os pacientes submetidos à técnica de periosteoplastia apresentaram grande capacidade na realização de descarga distal sem dor, durante a utilização de suas próteses. Pacientes submetidos às amputações transtibiais com uso do retalho plantar neuro-vascular pediculado e com fusão do calcâneo à tíbia, apresentaram como resultado um coto ósseo distal bastante estável, com maior área terminal para descarga de peso e fixação do próprio soquete protético, contribuindo muito no processo de reabilitação. Nestas três situações distintas, realizadas com técnicas cirúrgicas não convencionais, como nos cotos transtibiais extremamente curtos, na perioplastia tibio-fibular e com uso retalho plantar neuro-vascular pediculado e fusão do calcâneo à tíbia; excelentes resultados puderam ser observados no processo de reabilitação e na confecção customizada das próteses, quando comparada com as amputações transtibiais clássicas / Abstract: The choice of the level of amputation and surgical technique to be adopted in lower limb amputations should be assessed carefully, because it will influence directly on the fitting and physical rehabilitation of the amputee. The preservation of the knee joint renders the amputee a more physiological gait and a more functional process of rehabilitation. In specific situations, such as orthopedic trauma with severe lower limb injury, the option for a transtibial amputation performed just below the tibial tuberosity, with maintenance of the insertion of the patellar tendon, can result in extremely short, stumps, but functional stumps. Transtibial amputees with stumps extremely short, with an average bone length of 4.4cm, were fully adapted to the prostheses and satisfied with the quality of gait after rehabilitation. In elective situations, the classical transtibial amputations can be substituted by amputations with tibio-fibular periosteoplasty or the use of a neuro-vascular pediculated plantar flap graft, with fusion of the calcaneous to the tibia. Patients undergoing periosteoplasty technique presented a painless and high capacity terminal discharge during use of the prostheses. Patients submitted to a neuro-vascular pediculated plantar flap graft with fusion of the calcaneous to the tibia, presented a stable distal bone stump with a larger distal bearing area and better fixation of the prostheses, contributing positively to the rehabilitation process. In these three different situations, that made use of no convencional surgical techniques, as in the extremely short leg stumps, tibio-fibular periosteoplasty and the use of a neuro-vascular pediculated plantar flap graft, with fusion of the calcaneous to the tibia; excellent results may be achieved in the rehabilitation process and in the fitting of custom prostheses, when compared with traditional transtibial amputations / Doutorado / Fisiopatologia Cirúrgica / Doutor em Ciências

INTRODUCTION: Muscle activity and timing of the swing phases may contribute to the differences we see in athletes at different skill levels. The purpose of this study is to analyze the differences between mean muscle activity, peak muscle active and time to peak muscle activity for select muscles in the lower extremity as well as the differences between start times for swing phases and bat velocity prior to impact for a skilled and recreational group. METHODS: Twelve healthy subjects were split into two groups based on competitive level and analyzed hitting off of a tee. RESULTS: No significant differences were seen between muscle activity or the start time for the landing and swinging between groups. The skilled group did have a faster time to peak muscle activation for the front leg biceps femoris (p = 0.024), start the shifting (p = 0.12) and stepping (p = 0.11) phases significantly earlier as well as had a higher bat velocity prior to ball contact (p = 0.42) than the recreational group. CONCLUSION: Mean and peak muscle activity trends to be lower for skilled hitters than recreational hitters. Evidence of the skilled group starting the shifting and stepping phase earlier as well as having a higher bat velocity prior to impact could be important in separating hitters into skill level.

The purpose of this study was to establish a motion pattern by characterizing the kinetics and kinematics associated with the hip, knee and ankle joint of a group of healthy yoga teachers when performing three yoga postures and comparing them to three activities of daily living (ADL). A group of experienced female yoga practitioners (n = 13), with a minimum of 5 years teaching experience, between the ages of 20 to 45, performed the Lunge, Warrior II, and Triangle poses starting from Downward Dog. The kinetic and kinematic data of the yoga practitioners was collected when performing yoga postures. The step length, joint angles, range of motion (ROM), joint moments, and angular impulse in sagittal and frontal plane were studied for the hip, knee and ankle during performance. The data were averaged, descriptive statistics of the measures were obtained, and results for each posture as well as for the average yoga practice were presented in tables and figures with standard deviation. The percentages of change and effect sizes were calculated to compare yoga movements to ADL. The stride lengths were similar in the Lunge (1.98m), Warrior II (1.51m), and Triangle (1.43m). The motion patterns of the Lunge and the Warrior II poses follow similar joint angle and joint moment, and angular impulse patterns, whereas the Triangle pose creates distinctly different patterns in most joints and planes. In the Lunge and Warrior II poses, the knee joint reaches a maximal flexion angle of 73.76° and 67.69° respectively, 18% to 32% less than what is classically instructed in a yoga class. The knee reached 9.5° of extension while in Triangle pose. The hip contributed 50-70% of the angular impulse in the lower limb in all three yoga movements. When comparing to ADL, ROM was only greater in the hip in of sagittal plane motion and in the knee if frontal plane motion, and most of the joint moments of the lower extremity were notably smaller in ADL for the minimal values and notably larger for the maximal values in yoga. In conclusion, this is first time to establish the kinematics and kinetics motion patterns of three yoga movement which become a basis for further studying yoga biomechanics and its application. Moreover the motion pattern data suggests that yoga experts do not yoga as practice the Lunge and Warrior poses as classically described in yoga book for the knee and Triangle pose may place the knee in a precarious alignment. Yoga has high demanding to hip strength and ROM, which may help to improve hip strength and subsequently benefit to dynamic stability in gait.

Author's name: Bc. Sára Miczová Supervisor:: Mgr. Miriama Dědková, DiS Opponent: Thesis title: Occupational therapy practise guidelines in patients with functional upper limb impairment after stroke in subacute phase To be able to provide occupational therapy intervention of high quality the occupatioal therpaists should rely on relevant standards of clinical care and clinical guidelines. (Švestková, 2018). Occupational therapists as well as other members of the interdisciplinar team provide professional care to the patients recovering from stroke. Those patients often have to deal with upper limb impairment which leads to decrese of quality of life. Relevant studies focused on this topic were searched via key words in PubMed, Web of Science and OVID Evidence Based Medicine Reviews databasis. The criterias of selection were: public access to the content, english language which were mainly focused on stroke patients rehabilitation. The suggestion of guideline was created based on methods accepted by department. The occupational therapist as well as physiotherapeutist of early rehabilitation were included in the process of creating the guideline using the GRADE programme for it. Only 48 out of 4054 studies were used, these were divided into two cathegories, one being the cathegory of assessment, the...