dorsal/arxiv
View SchemaInfluence of muscle preactivation of the lower limb on impact dynamics in case of frontal collision
| Authors | Martine Pithioux, Pascale Chavet, Nancy St-Onge, Caroline Nicol |
|---|---|
| Categories | |
| ArXiv ID | physics/0510185 |
| URL | https://arxiv.org/abs/physics/0510185 |
Abstract
Accidentology or shock biomechanics are research domains mainly devoted to the development of safety conditions for the users of various transport modes in case of an accident. The objective of this study was to improve the knowledge of the biomechanical behaviour of the lower limb facing sudden dynamic loading during a frontal collision. We aimed at establishing the relationship between the level of muscular activity prior to impact, called 'preactivation', of the lower limb extensors and the mechanical characteristics of impact. Relationships were described between the level of preactivation, the impact peak force values, the minimum force after unloading and the associated loading and unloading rates. The existence of reflex mechanisms that were affected by the level of voluntary muscular preactivation for the lower limb muscles was demonstrated. In conclusion, the existence of specific mechanism acting mainly at the knee level may result from the level of preactivation. Muscle behavior has to be included in numerical models of the human driver to better evaluate the overall stiffness of the body before and at impact.
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"date_created": "2026-03-02T18:01:04.039000Z",
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"abstract": "Accidentology or shock biomechanics are research domains mainly devoted to\nthe development of safety conditions for the users of various transport modes\nin case of an accident. The objective of this study was to improve the\nknowledge of the biomechanical behaviour of the lower limb facing sudden\ndynamic loading during a frontal collision. We aimed at establishing the\nrelationship between the level of muscular activity prior to impact, called\n\u0027preactivation\u0027, of the lower limb extensors and the mechanical characteristics\nof impact. Relationships were described between the level of preactivation, the\nimpact peak force values, the minimum force after unloading and the associated\nloading and unloading rates. The existence of reflex mechanisms that were\naffected by the level of voluntary muscular preactivation for the lower limb\nmuscles was demonstrated. In conclusion, the existence of specific mechanism\nacting mainly at the knee level may result from the level of preactivation.\nMuscle behavior has to be included in numerical models of the human driver to\nbetter evaluate the overall stiffness of the body before and at impact.",
"arxiv_id": "physics/0510185",
"authors": [
"Martine Pithioux",
"Pascale Chavet",
"Nancy St-Onge",
"Caroline Nicol"
],
"categories": [
"physics.class-ph",
"physics.bio-ph"
],
"title": "Influence of muscle preactivation of the lower limb on impact dynamics in case of frontal collision",
"url": "https://arxiv.org/abs/physics/0510185"
},
"schema_id": "dorsal/arxiv",
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"variant": "snapshot-2026-03-01",
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