Search Results - "Shourijeh, Mohammad"

Muscle Synergies Modify Optimization Estimates of Joint Stiffness During Walking by Shourijeh, Mohammad S, Fregly, Benjamin J

“…Because of its simplicity, static optimization (SO) is frequently used to resolve the muscle redundancy problem (i.e., more muscles than degrees-of-freedom…”
Get more information

A forward-muscular inverse-skeletal dynamics framework for human musculoskeletal simulations by S. Shourijeh, Mohammad, Smale, Kenneth B, Potvin, Brigitte M, Benoit, Daniel L

“…Abstract This study provides a forward-muscular inverse-skeletal dynamics framework for musculoskeletal simulations. The simulation framework works based on…”
Get full text

EMG-driven Musculoskeletal Model Calibration with Wrapping Surface Personalization by Ao, Di, Li, Geng, Shourijeh, Mohammad S., Patten, Carolynn, Fregly, Benjamin J.

“…Muscle forces and joint moments estimated by electromyography (EMG)-driven musculoskeletal models are sensitive to the wrapping surface geometry defining…”
Get full text

Evaluation of Synergy Extrapolation for Predicting Unmeasured Muscle Excitations from Measured Muscle Synergies by Ao, Di, Shourijeh, Mohammad S, Patten, Carolynn, Fregly, Benjamin J

“…Electromyography (EMG)-driven musculoskeletal modeling relies on high-quality measurements of muscle electrical activity to estimate muscle forces. However, a…”
Get full text

Differences in muscle synergies between healthy subjects and transfemoral amputees during normal transient-state walking speed by Mehryar, Pouyan, Shourijeh, Mohammad S., Rezaeian, Tahmineh, Khandan, Amin R., Messenger, Neil, O’Connor, Rory, Farahmand, Farzam, Dehghani-Sanij, Abbas

“…•4 modules accounts for 85 %> of the variability in original signals for each group.•Transient-state gait may lead to inconsistencies in muscle synergy…”
Get full text

EMG-driven musculoskeletal model calibration with estimation of unmeasured muscle excitations via synergy extrapolation by Ao, Di, Vega, Marleny M., Shourijeh, Mohammad S., Patten, Carolynn, Fregly, Benjamin J.

“…Subject-specific electromyography (EMG)-driven musculoskeletal models that predict muscle forces have the potential to enhance our knowledge of internal…”
Get full text

An approach for improving repeatability and reliability of non-negative matrix factorization for muscle synergy analysis by Shourijeh, Mohammad S, Flaxman, Teresa E, Benoit, Daniel L

“…Abstract The aim of this study was to evaluate non-negative matrix factorization (NMF) and concatenated NMF (CNMF) to analyze and reliably extract muscle…”
Get full text

Muscular activity comparison between non-amputees and transfemoral amputees during normal transient-state walking speed by Mehryar, Pouyan, Shourijeh, Mohammad S., Rezaeian, Tahmineh, Khandan, Amin R., Messenger, Neil, O'Connor, Rory, Farahmand, Farzam, Dehghani-Sanij, Abbas

“…•Individual muscle activity showed no significant differences in VL, SEM and TFL•Similarities might be related to the unchanged neural strategy•Dissimilarities…”
Get full text

A practical solution to reduce soft tissue artifact error at the knee using adaptive kinematic constraints by Potvin, Brigitte M, Shourijeh, Mohammad S, Smale, Kenneth B, Benoit, Daniel L

“…Abstract Musculoskeletal modeling and simulations have vast potential in clinical and research fields, but face various challenges in representing the…”
Get full text

Do Muscle Synergies Improve Optimization Prediction of Muscle Activations During Gait? by Michaud, Florian, Shourijeh, Mohammad S., Fregly, Benjamin J., Cuadrado, Javier

“…Determination of muscle forces during motion can help to understand motor control, assess pathological movement, diagnose neuromuscular disorders, or estimate…”
Get full text

Knee joint kinematics and kinetics during the hop and cut after soft tissue artifact suppression: Time to reconsider ACL injury mechanisms? by Smale, Kenneth B., Potvin, Brigitte M., Shourijeh, Mohammad S., Benoit, Daniel L.

“…The recent development of a soft tissue artifact (STA) suppression method allows us to re-evaluate the tibiofemoral kinematics currently linked to non-contact…”
Get full text

Stress-shielding resistant design of custom pelvic prostheses using lattice-based topology optimization by Babazadeh-Naseri, Ata, Li, Geng, Shourijeh, Mohammad S., Akin, John E., Higgs III, C.Fred, Fregly, Benjamin J., Dunbar, Nicholas J.

“…•Patient-specific FE models simulated pre- and post-surgical pelvic stresses.•The stress-shielding resistant design of implants was introduced.•The optimized…”
Get full text

How Well Do Commonly Used Co-contraction Indices Approximate Lower Limb Joint Stiffness Trends During Gait for Individuals Post-stroke? by Li, Geng, Shourijeh, Mohammad S, Ao, Di, Patten, Carolynn, Fregly, Benjamin J

“…Muscle co-contraction generates joint stiffness to improve stability and accuracy during limb movement but at the expense of higher energetic cost. However,…”
Get full text

Functional muscle synergies to support the knee against moment specific loads while weight bearing by Flaxman, Teresa E., Shourijeh, Mohammad S., Smale, Kenneth B., Alkjær, Tine, Simonsen, Erik B., Krogsgaard, Michael R., Benoit, Daniel L.

“…Externally applied abduction and rotational loads are major contributors to the knee joint injury mechanism; yet, how muscles work together to stabilize the…”
Get full text

Musculoskeletal Model Personalization Affects Metabolic Cost Estimates for Walking by Arones, Marleny M, Shourijeh, Mohammad S, Patten, Carolynn, Fregly, Benjamin J

“…Assessment of metabolic cost as a metric for human performance has expanded across various fields within the scientific, clinical, and engineering communities…”
Get full text

Computational evaluation of psoas muscle influence on walking function following internal hemipelvectomy with reconstruction by Vega, Marleny M., Li, Geng, Shourijeh, Mohammad S., Ao, Di, Weinschenk, Robert C., Patten, Carolynn, Font-Llagunes, Josep M., Lewis, Valerae O., Fregly, Benjamin J.

“…An emerging option for internal hemipelvectomy surgery is custom prosthesis reconstruction. This option typically recapitulates the resected pelvic bony…”
Get full text

Editorial: Advances in Musculoskeletal Modeling and Their Application to Neurorehabilitation by Shourijeh, Mohammad S., Mehrabi, Naser, McPhee, John J., Fregly, Benjamin J.

“…Bio-fidelic predictive NMS models could delineate crucial parameters of a design and elucidate the effect of a device conceptual design on an individual's…”
Get full text

Experimental muscle pain of the vastus medialis reduces knee joint extensor torque and alters quadriceps muscle contributions as revealed through musculoskeletal modeling by Flaxman, Teresa E., Shourijeh, Mohammad S., Alkjær, Tine, Krogsgaard, Michael R., Simonsen, Erik B., Bigham, Heather, Benoit, Daniel L.

“…Voluntary activation deficit of the quadriceps muscle group is a common symptom in populations with knee joint injury. Musculoskeletal modeling and simulations…”
Get full text

A computational method for estimating trunk muscle activations during gait using lower extremity muscle synergies by Li, Geng, Ao, Di, Vega, Marleny M, Shourijeh, Mohammad S, Zandiyeh, Payam, Chang, Shuo-Hsiu, Lewis, Valerae O, Dunbar, Nicholas J, Babazadeh-Naseri, Ata, Baines, Andrew J, Fregly, Benjamin J

“…One of the surgical treatments for pelvic sarcoma is the restoration of hip function with a custom pelvic prosthesis after cancerous tumor removal. The…”
Get full text

The Impact of Different Self-Selected Walking Speeds on Muscle Synergies in Transfemoral Amputees during Transient-State Gait by Mehryar, Pouyan, Shourijeh, Mohammad, Rezaeian, Tahmineh, Khandan, Aminreza, Messenger, Neil, O’Connor, Rory, Farahmand, Farzam, Dehghani-Sanij, Abbas

“…Facing above-knee amputation poses a significant hurdle due to its profound impact on walking ability. To overcome this challenge, a complex adaptation…”
Get full text