The Dynamics of Running

Williams, Katherine

doi:10.1002/9780470693797.ch8

Cited by 15 publications

(9 citation statements)

References 92 publications

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“…While joint kinetics were not measured in this study, other studies have demonstrated a reduced knee extension moment with a more midfoot or forefoot strike pattern. 37 It is likely that lower rates of external loading associated with change in strike pattern reduce the loading rates at the patellofemoral joint level, which may account for the improvement in pain and function experienced by the 3 runners in this case series.…”

Section: Discussionmentioning

confidence: 99%

“…1,2 It has also been shown that the peak knee joint net extensor moment is reduced when running with a midfoot strike compared to a rearfoot strike pattern. 37 Consequently, this may have the effect of reducing the magnitude of patellofemoral joint contact force. Additionally, the reduced load rate of the vertical ground reaction force may translate into lower rates of loading at the patellofemoral joint.…”

Section: Roy Th Cheung Pt Phd 1 • Irene S Davis Pt Phdmentioning

confidence: 99%

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Landing Pattern Modification to Improve Patellofemoral Pain in Runners: A Case Series

Cheung

Davis

2011

J Orthop Sports Phys Ther

203

161

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Section: Discussionmentioning

confidence: 99%

Section: Roy Th Cheung Pt Phd 1 • Irene S Davis Pt Phdmentioning

confidence: 99%

Landing Pattern Modification to Improve Patellofemoral Pain in Runners: A Case Series

Cheung

Davis

2011

J Orthop Sports Phys Ther

203

161

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“…The participants in this study performed running at the speeds of 75-85% of the participants' best records of 100-m race which were comfortable to them. At these running speeds, the range of hip angle and hip angular velocity in the sagittal plane would be relatively smaller than those at maximal running speeds [25,26]. This indicates that the running speeds in this study could allow participants to maintain their normal running kinematics when BFR cuffs were applied on their thigh.…”

Section: Discussionmentioning

confidence: 85%

The Influence of Applied Blood Flow Restriction Cuffs on Kinematics of Submaximal Sprinting

Nagahara

Abe

2017

JFMK

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Abstract:It is unknown how sports activity combined with blood flow restriction (BFR) on the limbs can impact the exercising limb's motion. We aimed to compare the lower limb kinematics between submaximal sprinting with and without BFR cuffs (i.e., BFR and normal conditions) when they were applied on the upper thigh. Ten collegiate sprinters performed five 45-m submaximal sprint trials under normal and BFR conditions. The BFR was applied to both legs at the proximal portion of the thigh utilizing elastic cuffs. The cuff pressure was set at approximately 60% of estimated arterial occlusion pressure. Spatiotemporal and hip and knee joint kinematic variables for both legs during submaximal sprinting were obtained using a motion capture system. The results showed, for spatiotemporal variables, no significant difference (p > 0.653), a trivial or small effect size (0.050-0.205), and high correlation coefficients (r > 0.923) between conditions. Moreover, for the joint angles and angular velocities, no significant difference (p > 0.244) and a trivial or small effect size (0.003-0.538), as well as significant correlations (r >0.684) were found between conditions. These results indicate that, in general, there is probably no influence of BFR cuffs on the upper thigh on running kinematics.

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“…Diversas técnicas de locomoção terrestre foram descritas como apresentando uma relação polinomial entre a v e a FG ou a DC (p.e., 22,26,40) . Contudo, no presente estudo verificou-se um maior ajuste e um menor erro de estimativa ao adoptarem-se modelos lineares.…”

Section: Figura 5 Relação Entre a Velocidade De Deslocamento (V) E Aunclassified

“…Logo, assumir uma elevada velocidade média de deslocamento durante a prova é um pré-requisito para aceder a um melhor rendimento desportivo. Enquanto actividade cíclica que é, mecanicamente, a velocidade média de deslocamento (v) pode ser determinada com base na frequência gestual (FG) e na distância de ciclo (DC) (40) : (3) Na literatura sugere-se a existência de uma relação não-linear entre a Pmet e a FG ou a DC (29,36) . Existe um valor mínimo de FG e de DC às quais se reporta o valor mínimo de Pmet.…”

Section: Introductionunclassified

Estudo da relação entre variáveis fisiológicas, biomecânicas e o rendimento de corredores portugueses de 3000 metros

Bragada

Barbosa

2007

RPCD

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RESUMOO objectivo do presente estudo foi investigar as relações entre o perfil fisiológico, a resposta biomecânica e o rendimento desportivo de corredores de meio-fundo portugueses. Dezoito atletas foram submetidos a um protocolo incremental de 5 patamares de 3 minutos em tapete rolante sem qualquer inclinação. Em cada patamar a velocidade foi constante e os incrementos foram de 1,45 km . h -1 . Durante todo o protocolo, o consumo de oxigénio e outros parâmetros bioenergéticos foram avaliados respiração-a-respiração através de oximetria directa. Foram calculadas a potência metabólica (Pmet), o custo energético (C), a velocidade de deslocamento (v), a frequência gestual (FG) e a distância de ciclo (DC). Foi determinado em prova oficial (corrida de 3000 metros) o rendimento desportivo. Verificou-se uma relação positiva e significativa entre a Pmet e a v (R 2 =0,78; p<0,01). As relações entre o C e a FG ou a DC não foram significativas. A relação entre a v e a FG (R 2 =0,34; p<0,01) e entre a v e a DC (R 2 =0,87; p<0,01) foram positivas e significativas. Verificou-se uma relação significativa entre o rendimento e a Pmet a 16 km.h -1 (R 2 =0,23; p=0,05). Em conclusão, verifica-se uma dependência moderada do rendimento dos meio-fundistas portugueses relativamente ao seu perfil fisiológico e este de forma ténue face à resposta biomecânica.Palavras-chave: Atletismo, rendimento, custo energético, distân-cia de ciclo, frequência gestual, velocidade (3.000-m event). It was verified a significant and positive relationship between Pmet and v (R 2 =0,78; P<0,01). 34; p<0,01), as well as, between v and DC (R 2 =0,87; p<0,01) were statistically significant and positive. It was observed a significant relationship between performance and Pmet at 16 km.h -1 (R 2 =0,23; p=0,05). In conclusion, for portuguese middledistance runners, it seems to exist a moderate dependence of performance from physiological profile and this one, from the biomechanical behaviour. ABSTRACT Study the relationships between physiological profile, biomechanical behaviour and performance of middle-distance Portuguese runners The aim of this investigation was to study the relationships between physiological profile, biomechanical behaviour and performance of middle-distance Portuguese runners. Eighteen runners were submitted to an incremental protocol of 5 trials of 3 minutes in treadmill without inclination. At each step, velocity was constant and between steps velocity increased by 1,45 km . h -1 . Through the protocol, oxygen up-take and other bioenergetical parameters were evaluated breath-by-breath with direct oximetry. It was measured the metabolic power (Pmet), the energy cost (C), the running velocity (v), the stride frequency (FG) and the stride distance (DC). It was also recorded the performance in official competition

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The Dynamics of Running

Cited by 15 publications

References 92 publications

Landing Pattern Modification to Improve Patellofemoral Pain in Runners: A Case Series

Landing Pattern Modification to Improve Patellofemoral Pain in Runners: A Case Series

The Influence of Applied Blood Flow Restriction Cuffs on Kinematics of Submaximal Sprinting

Estudo da relação entre variáveis fisiológicas, biomecânicas e o rendimento de corredores portugueses de 3000 metros

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