Muscle contributions to propulsion and support during running

Hamner, Samuel R.; Seth, Ajay; Delp, Scott L.

doi:10.1016/j.jbiomech.2010.06.025

Cited by 613 publications

(351 citation statements)

References 41 publications

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“…A generic anatomic model ( Figure 1A), based on a previous study running of dynamics [24] was used. The model was customized by adding degrees of freedom (DOFs) and contact points to the knee.…”

Section: Methodsmentioning

confidence: 99%

Tibiofemoral contact forces during walking, running and sidestepping

et al. 2016

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Section: Methodsmentioning

confidence: 99%

Tibiofemoral contact forces during walking, running and sidestepping

et al. 2016

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“…The specific muscle tension [24] was set to 61 N/cm 2 . The muscle moment arm length and muscle fiber length ratio were exported from Lower Limb Model 2010 [24][25][26][27] on OpenSim [28]; these values were obtained for each muscle by determining the hip-, knee-, and ankle-joint angles during standing. The pennation angle was not considered in this study.…”

Section: Musculoskeletal Modelmentioning

confidence: 99%

“…The coordinate points of the muscle origin and insertion were exported from Lower Limb Model 2010 [24][25][26][27] on OpenSim [28]; these values were obtained for each muscle by determining the hip-, knee-and ankle-joint angles during standing. The hip-joint contact force was calculated as follows: (9) (10) parameters (the objective function, physiological cross-sectional area, force-length relation, and muscle moment arm length).…”

Section: Calculation Of Hip-joint Contact Forcementioning

confidence: 99%

Relationship between Hip Flexion Contracture and Hip-Joint Contact Force in Standing Posture: A Computer Simulation Study

Inai¹,

Edama²,

Takabayashi³

et al. 2017

J Ergonomics

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Mechanical stress on articular cartilage and long-duration standing postures are risk factors for hip osteoarthritis progression. This study aims to examine the relationship between hip flexion contracture and the hip-joint contact force in standing postures using computer simulation. A musculoskeletal model composed of seven segments (Head, Arms, and Trunk (HAT) and thighs, shanks, and two feet) was created. Various standing postures (708 variations) were generated, and five hip flexion contracture conditions were set: zero contracture and flexions of 0°, 10°, 20°, and 30°. A standing posture satisfying the hip flexion contracture condition with the minimum sum of the muscle activations was obtained as the optimal standing posture, and the hip-joint contact force in the optimal standing posture was calculated. A sensitivity analysis was conducted by varying four parameters (the objective function, physiological cross-sectional area, force-length relation, and muscle moment arm length). The hip-joint contact force and hip extensor muscle forces (i.e., those of the gluteus maximus, semitendinosus, semimembranosus, and biceps femoris long head) during standing increased with the development of hip flexion contracture. The hip-joint contact force for the standing posture with a 30° hip flexion contracture was almost twice that for the no-contracture condition (8.7 and 3.7 N/kg, respectively). The sensitivity analysis showed that variation of the four parameters did not affect our main finding. The main finding of this study is that hip-joint contact force during standing increases with the development of hip flexion contracture. The findings of this study may help to prevent hip osteoarthritis progression.

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“…We compared the full-strength simulated muscle activations from CMC to the subject's experimental EMG to ensure that there was agreement between the simulated and experimental muscle activation patterns ( Figure 1). An induced acceleration analysis (IAA) was then performed to determine the contributions of individual muscles to the support (vertical acceleration) and progression (horizontal acceleration) of the body mass center (Zajac and Gordon, 1989;Anderson and Pandy, 2003;Hamner et al, 2010).…”

Section: Modeling and Simulationsmentioning

confidence: 99%

Gluteus maximus and soleus compensate for simulated quadriceps atrophy and activation failure during walking

Thompson

Chaudhari

Schmitt

et al. 2013

Journal of Biomechanics

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Important activities of daily living, like walking and stair climbing, may be impaired by muscle weakness. In particular, quadriceps weakness is common in populations such as those with knee osteoarthritis (OA) and following ACL injury and may be a result of muscle atrophy or reduced voluntary muscle activation. While weak quadriceps has been strongly correlated with functional limitations in these populations, the important cause-effect relationships between abnormal lower extremity muscle function and patient function remain unknown. The purpose of this study was to explore possible muscle compensation strategies and changes in contribution to support and progression to maintain gait kinematics in response to two sources of quadriceps weakness: atrophy and activation failure. We used muscle-driven simulations to track normal gait kinematics in healthy subjects and applied simulated quadriceps weakness as atrophy and activation failure to evaluate compensation patterns associated with the individual sources of weakness. We found that the gluteus maximus and soleus muscles display the greatest ability to compensate for simulated quadriceps weakness. Relative to the baseline behavior of the muscles, the soleus compensates more to counteract activation deficits in the quadriceps and the gluteus maximus compensates more to counteract atrophy in the quadriceps. The development of this method for estimating the compensation strategies that are necessary to maintain normal gait will enable investigations of the role of muscle weakness in abnormal gait and inform potential rehabilitation strategies to improve such conditions.

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Muscle contributions to propulsion and support during running

Cited by 613 publications

References 41 publications

Tibiofemoral contact forces during walking, running and sidestepping

Tibiofemoral contact forces during walking, running and sidestepping

Relationship between Hip Flexion Contracture and Hip-Joint Contact Force in Standing Posture: A Computer Simulation Study

Gluteus maximus and soleus compensate for simulated quadriceps atrophy and activation failure during walking

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