Rapid neck muscle adaptation alters the head kinematics of aware and unaware subjects undergoing multiple whiplash-like perturbations

Siegmund, Gunter P.; Sanderson, David J.; Myers, Barry S.; Inglis, James

doi:10.1016/s0021-9290(02)00458-x

Cited by 109 publications

(86 citation statements)

References 41 publications

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“…This is in agreement with Siegmund et al, who tested sternocleidomastoid and cervical paraspinal muscles [18]. In contrast to those result, we observed an adaptation effect towards increased muscle onset latencies when the participants flexed their heads.…”

supporting

confidence: 94%

“…The kinematics showed that a significantly decreased peak angle displacement in the neck occurred after the first perturbation. Previous studies of forward perturbations have reported both increased head angles and no change in head angles [18,19]. An increased segment angle should be possible as the EMG amplitudes was reduced.…”

Section: Discussionmentioning

confidence: 90%

“…A strict stiff strategy might cause muscle fatigue or myalgia while a relaxed strategy, depending on passive structures, might increase the risk for injury in joint structures and tissues. Contrary to Vibert et al (2001), who found no or little adaptation in sideways reactions, seated postural reactions in the forward direction have been found to adapt after the first perturbation with decreased EMG amplitude over time [18,19]. If seated postural reactions in sideways directions adapts or not is still an unanswered question.…”

Section: Adaptation Of Postural Reactions In Seated Positions and Infmentioning

confidence: 81%

See 2 more Smart Citations

Adaptation of Postural Reactions in Seated Positions and Influence of Head Posture when Exposed to a Single Sideway Perturbation: Relevance for Driving on Irregular Terrain

Stenlund¹

2016

J Nov Physiother Phys Rehabil

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supporting

confidence: 94%

Section: Discussionmentioning

confidence: 90%

Section: Adaptation Of Postural Reactions In Seated Positions and Infmentioning

confidence: 81%

See 1 more Smart Citation

Adaptation of Postural Reactions in Seated Positions and Influence of Head Posture when Exposed to a Single Sideway Perturbation: Relevance for Driving on Irregular Terrain

Stenlund¹

2016

J Nov Physiother Phys Rehabil

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“…Temporal, event and amplitude awareness are the three dimensions in such anticipation. The first refers to whether the subject knows about the exact timing in which an event will occur, the second describes whether the subject knows an event will occur, and the third refers to the subject's knowledge of the magnitude of the imminent event [21][22][23]. It has been reported that awareness of an impact influences the muscle response in a simulated whiplash event [9,21].…”

Section: Discussionmentioning

confidence: 99%

The role of sternocleidomastoid muscle in simulated low velocity rear-end impacts

et al. 2005

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“…The frontal and lateral simulations were run with the M50-O, M50-OS, and M50-OS+B with neck muscle activation to approximate the living volunteer response. The same curve used for active musculature in the GHBMC M50-O was used in the M50-OS and M50-OS+B with the curve beginning at 134 ms of the simulation (GHBMC 2015;Siegmund et al 2003). This includes a 74-ms response time observed in Siegmund et al…”

Section: Boundary Conditionsmentioning

confidence: 99%

Modular use of human body models of varying levels of complexity: Validation of head kinematics

Decker

Koya

Davis

et al. 2017

Traffic Injury Prevention

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Objective: The significant computational resources required to execute detailed human body finiteelement models has motivated the development of faster running, simplified models (e.g., GHBMC M50-OS). Previous studies have demonstrated the ability to modularly incorporate the validated GHBMC M50-O brain model into the simplified model (GHBMC M50-OS+B), which allows for localized analysis of the brain in a fraction of the computation time required for the detailed model. The objective of this study is to validate the head and neck kinematics of the GHBMC M50-O and M50-OS (detailed and simplified versions of the same model) against human volunteer test data in frontal and lateral loading. Furthermore, the effect of modular insertion of the detailed brain model into the M50-OS is quantified. Methods: Data from the Navy Biodynamics Laboratory (NBDL) human volunteer studies, including a 15g frontal, 8g frontal, and 7g lateral impact, were reconstructed and simulated using LS-DYNA. A five-point restraint system was used for all simulations, and initial positions of the models were matched with volunteer data using settling and positioning techniques. Both the frontal and lateral simulations were run with the M50-O, M50-OS, and M50-OS+B with active musculature for a total of nine runs. Conclusion:The greatest departure from the detailed occupant models were noted in lateral flexion, potentially indicating the need for further study. Precise modeling of the belt system however was limited by available data. A sensitivity study of these parameters in the frontal condition showed that belt slack and muscle activation have a modest effect on the ISO score. The reduction in computation time of the M50-OS+B reduces the burden of high computational requirements when handling detailed HBMs. Future work will focus on harmonizing the lateral head response of the models and studying localized injury criteria within the brain from the M50-O and M50-OS+B.

show abstract

Rapid neck muscle adaptation alters the head kinematics of aware and unaware subjects undergoing multiple whiplash-like perturbations

Cited by 109 publications

References 41 publications

Adaptation of Postural Reactions in Seated Positions and Influence of Head Posture when Exposed to a Single Sideway Perturbation: Relevance for Driving on Irregular Terrain

Adaptation of Postural Reactions in Seated Positions and Influence of Head Posture when Exposed to a Single Sideway Perturbation: Relevance for Driving on Irregular Terrain

The role of sternocleidomastoid muscle in simulated low velocity rear-end impacts

Modular use of human body models of varying levels of complexity: Validation of head kinematics

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