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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Locomotor Training: The effects of treadmill speed and body weight support on lower extremity joint kinematics and kinetics

Lathrop, Rebecca Leeann 16 September 2009 (has links)
No description available.
2

Respostas motoras durante a marcha com suporte de peso corporal na esteira em diferentes velocidades em indivíduos com lesão medular / Motor responses during body weight support treadmill gait at different speeds in individuals with spinal cord injury

Padula, Natalia 14 March 2018 (has links)
A Lesão Medular (LM) afeta a funcionalidade do indivíduo e pode reduzir drasticamente a independência. A restauração da mobilidade e do andar, é uma das principais metas das intervenções na população com LM, e nesse contexto o treinamento locomotor (TLSP) é uma intervenção utilizada com objetivo de fornecer estímulos sensoriais específicos ao sistema nervoso danificado para estimular as redes e circuitos preservados da medula. A velocidade é uma aferência sensorial importante durante o TLSP em esteira. Objetivo: investigar o efeito da variação de velocidade sobre as respostas motoras de indivíduos com lesões medulares durante TLSP em esteira. Método: 20 sujeitos sem LM denominado de grupo controle (GC) e 13 com LM completa (GLM) foram submetidos ao protocolo TLSP em esteira nas velocidades 2, 3 e 4 km/h. Foi realizada uma análise de EMG para avaliar atividade muscular de vasto lateral (VL), bíceps femural (BF), tibial anterior (TA) e gastrocnêmio lateral (GL) ao longo do ciclo do passo. Resultados: O GC apresentou maior atividade muscular distal TA e GL quando comparado ao GLM com maior atividade proximal VL e BF durante todas as fases da marcha. A velocidade que apresentou maior atividade muscular foi a intermediária (3km/h), quando comparado as velocidades 2Km/h e 4km/h. O aumento da velocidade resultou em maior influência nos músculos distais. Conclusão: a velocidade pode influenciar nas respostas motoras locomotoras de indivíduos com LM. O aumento da velocidade teve um papel importante no aumento da atividade muscular, contudo a atividade muscular foi maior na velocidade intermediária (3km/h) / Spinal Cord Injury (SCI) affects the individual\'s functionality and can gradually reduce independence. The restoration of mobility and walking, is one of the main goals of the interventions in SCI population. In this context body weight support treadmill training (BWSTT) is an intervention used to provide specific sensory stimuli to the damaged nervous system to stimulate the networks and circuits preserved in the spinal cord. Velocity is an important sensory afferment during the BWSTT. Objective: to investigate the effect of speed variation on motor responses of use with spinal cord injuries BWSTTl. Method: 20 healthy subjects composed the control group (CG) and 13 with complete SCI (SCIG) were submitted to BWSTT at speeds 2, 3 and 4 km/h. An EMG analysis was performed to evaluate the muscle activity of lateral vastus (LV), biceps femorales (BF), tibial anterior (TA) and gastrocnemius lateral (GL) throughout the cycle of the step. Results: The CG had greater distal muscle activity TA and GL when compared to GLM with greater proximal activity, VL and BF, during all gait phases. The velocity that presented greater muscular activity was the intermediate (3km/h), when compared as speeds 2Km/h and 4km/h. Increased speed resulted in greater influence on the distal muscles. Conclusion: the velocity can influence motor responses. Increased speed had an important role in increasing muscle activity, however, muscle activity was greater at intermediate velocity (3km / h)
3

Respostas motoras durante a marcha com suporte de peso corporal na esteira em diferentes velocidades em indivíduos com lesão medular / Motor responses during body weight support treadmill gait at different speeds in individuals with spinal cord injury

Natalia Padula 14 March 2018 (has links)
A Lesão Medular (LM) afeta a funcionalidade do indivíduo e pode reduzir drasticamente a independência. A restauração da mobilidade e do andar, é uma das principais metas das intervenções na população com LM, e nesse contexto o treinamento locomotor (TLSP) é uma intervenção utilizada com objetivo de fornecer estímulos sensoriais específicos ao sistema nervoso danificado para estimular as redes e circuitos preservados da medula. A velocidade é uma aferência sensorial importante durante o TLSP em esteira. Objetivo: investigar o efeito da variação de velocidade sobre as respostas motoras de indivíduos com lesões medulares durante TLSP em esteira. Método: 20 sujeitos sem LM denominado de grupo controle (GC) e 13 com LM completa (GLM) foram submetidos ao protocolo TLSP em esteira nas velocidades 2, 3 e 4 km/h. Foi realizada uma análise de EMG para avaliar atividade muscular de vasto lateral (VL), bíceps femural (BF), tibial anterior (TA) e gastrocnêmio lateral (GL) ao longo do ciclo do passo. Resultados: O GC apresentou maior atividade muscular distal TA e GL quando comparado ao GLM com maior atividade proximal VL e BF durante todas as fases da marcha. A velocidade que apresentou maior atividade muscular foi a intermediária (3km/h), quando comparado as velocidades 2Km/h e 4km/h. O aumento da velocidade resultou em maior influência nos músculos distais. Conclusão: a velocidade pode influenciar nas respostas motoras locomotoras de indivíduos com LM. O aumento da velocidade teve um papel importante no aumento da atividade muscular, contudo a atividade muscular foi maior na velocidade intermediária (3km/h) / Spinal Cord Injury (SCI) affects the individual\'s functionality and can gradually reduce independence. The restoration of mobility and walking, is one of the main goals of the interventions in SCI population. In this context body weight support treadmill training (BWSTT) is an intervention used to provide specific sensory stimuli to the damaged nervous system to stimulate the networks and circuits preserved in the spinal cord. Velocity is an important sensory afferment during the BWSTT. Objective: to investigate the effect of speed variation on motor responses of use with spinal cord injuries BWSTTl. Method: 20 healthy subjects composed the control group (CG) and 13 with complete SCI (SCIG) were submitted to BWSTT at speeds 2, 3 and 4 km/h. An EMG analysis was performed to evaluate the muscle activity of lateral vastus (LV), biceps femorales (BF), tibial anterior (TA) and gastrocnemius lateral (GL) throughout the cycle of the step. Results: The CG had greater distal muscle activity TA and GL when compared to GLM with greater proximal activity, VL and BF, during all gait phases. The velocity that presented greater muscular activity was the intermediate (3km/h), when compared as speeds 2Km/h and 4km/h. Increased speed resulted in greater influence on the distal muscles. Conclusion: the velocity can influence motor responses. Increased speed had an important role in increasing muscle activity, however, muscle activity was greater at intermediate velocity (3km / h)
4

Effect of High-Speed Treadmill Training with a Body Weight Support System in a Sport Acceleration Program

Eastman, Carie Suzanne 05 August 2011 (has links) (PDF)
Introduction: Maximum running acceleration essential components in many sports. The identification of specific training protocols to maximize sprint speed would be useful knowledge for soccer coaches and players. Purpose: The purpose of this study was to determine the effect of a high-speed treadmill with the use of a body-weight support system in a 6-week sport acceleration program on: 40-yard sprint time, maximal isometric knee flexor and extensor strength. Methods: 32 female soccer players (age 16 ± 1.19 yrs) participated in two treatment groups and one control group. Both treatment groups participated in a 12-session sport acceleration program. The first treatment group utilized a body-weight support system while on a high-speed treadmill; the second group used a standard treadmill with no body weight support system. The control group, NT, did not participate in a sports acceleration program and did not alter their exercise routines outside of the study. Results: For each variable an Analysis of Covariance (ANCOVA) was performed. 40-yard sprint times for treatment groups were shown to improve significantly as compared to the control group (p = 0.0007 for high-speed treadmill with body-weight support system, p= < 0.0001 for standard treadmill without body-weight support system). Isometric flexor and extensor strengths did not show significant differences between treatment groups and control group. P-values for the high-speed with body-weight support system were (p = 0.53) for flexors and (p = 0.51) for extensors as compared to the control group. P-values for the standard treadmill with no body-weight support system were (p = 0.19) for extensors and (p = 0.0263) for flexors. It is noted that the extensor muscles were nearly significant for the standard treadmill with no body-weight support system. Discussion: These results can help high school coaches and athletes determine the optimal treadmill training regime. The current study shows that a high-speed treadmill with body-weight support system is just as beneficial as standard treadmill training.
5

Análise de duas propostas para a reabilitação da marcha em indivíduos portadores de sequelas neurológicas crônicas

Santos, Fernanda Romaguera Pereira dos 10 May 2010 (has links)
Made available in DSpace on 2016-06-02T20:18:13Z (GMT). No. of bitstreams: 1 3132.pdf: 3107997 bytes, checksum: 1b931ab55a545210b8e98eae0eee3ce1 (MD5) Previous issue date: 2010-05-10 / Universidade Federal de Sao Carlos / This work is composed of three distinct studies. In the first one, we compared the muscle coactivation of tibialis anterior (TA) and gastrocunemius medialis (GM) during quiet stance and the also during the stance phase of gait in hemiparetic subjects (hemiparetic group, HG, n=12) and in subjects with no neurologic injuries (control group, CG, n=10). We evaluated the TA and GM electromyographic signal and calculated their overlapping ratio (OR). We concluded that these individuals do not present significant coactivation alterations in the stance phase of gait, but in quiet stance they seem to use the coactivation of the non-paretic limb to maintain postural stability. In the second study we investigated the effects of the association of treadmill training with body weight support (TTBWS) associated with strength training of ankle muscles on the motor control in chronic hemiparetic subjects. Fifteen volunteers were distributed into 2 treatment groups: 1) TTBWS (G1; n=7); and 2) TTBWS associated with resistance training for dorsi and plantar flexors (G2; n=8). We evaluated muscle performance of plantar flexion and dorsiflexion in an isokinetic dynamometer through peak torque (PT), total work (TW) and acceleration time (AT) at the speeds of 60°/s and 120°/s. For gait analysis we assessed the ground reaction forces (GRF). There was an increase in PT and TT of plantar flexion at 60°/s in the paretic side, and an increase in the positive peak of the anterior-posterior GRF component in both sides of G2. We suggested that the proposed intervention leads to improvements in the components related to propulsion of gait. In the third study, we evaluated the effect of the robot assisted gait training (RAGT) in children with spastic diplegia. Twenty children (12 male, 5-13 years old) were evaluated for functional outcomes and spatial-temporal patterns of gait before, after and 3 months after the end of the intervention. Comparisons revealed significant improvements on functional outcomes and in gait mechanics. We concluded that RAGT promotes better gait patterns, and that the learning of this new task is retained even after the end of the intervention. / Este trabalho é composto por três estudos distintos. Inicialmente comparamos a coativação dos músculos tibial anterior (TA) e gastrocnêmio medial (GM) em postura ortostática e durante a fase de apoio da marcha de indivíduos hemiparéticos (grupo hemiparético, GH; n = 12) e de indivíduos sem lesões neurológicas (grupo controle, GC; n = 10). Avaliamos o sinal eletromiográfico do TA e do GM e calculamos a taxa de sobreposição dos mesmos (ICoa). Em atividade estática observamos maior ICoa no membro não parético do GH quando comparado com o membro dominante do GC. Concluímos que hemiparéticos não apresentam alterações significativas da coativação na fase de apoio da marcha, mas em atividade estática parecem utilizar o aumento da coativação do lado não parético para a manutenção da estabilidade. No segundo estudo investigamos os efeitos da associação do treino de marcha em esteira com suporte parcial do peso corporal (TMESPP) ao treinamento de força para a musculatura do tornozelo sobre o controle motor em indivíduos hemiparéticos crônicos. Quinze voluntários foram distribuídos em 2 grupos de tratamento: 1) TMESPP (G1; n=7) e 2) TMESPP associado ao fortalecimento da musculatura do tornozelo (G2; n=8). Avaliamos o desempenho muscular nos movimentos de plantiflexão e dorsiflexão em dinamômetro isocinético nas velocidades de 60°/s e 120°/s, através dos valores de pico de torque (PT), trabalho total (TT) e tempo de aceleração (TA). Para avaliação da marcha analisamos as forças de reação do solo (FRS). Houve aumento do PT e do TT da plantiflexão a 60°/s do lado parético, e aumento dos picos positivos do componente ântero-posterior das FRS em ambos os lados do G2. Sugerimos que a intervenção proposta provoca melhora nos componentes da propulsão da marcha. O terceiro estudo avaliou o efeito do treino de marcha assistido por robô (TMAR) em 20 crianças com diparesia espástica (12 sexo masculino, 5-13 anos). Avaliamos medidas funcionais e padrões espaço-temporais da marcha antes, após e três meses depois do término da intervenção. As comparações revelaram melhora significativa nas medidas funcionais e na mecânica da marcha. Concluímos que o TMAR promove melhoras nos padrões da marcha, e que a aprendizagem dessa nova tarefa é retida mesmo após a interrupção do treino.

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