The Effect of Cutaneous Sensation, Proprioception and Strength in the Non-Amputated Leg on Balance in Traumatic Transtibial Amputees
Notice bibliographique
Résumé
As of 2005, there were 1.6 million people living with limb loss in the US. Studies have shown an effect of amputation on balance. Balance has mainly been studied during quiet standing in double-legged stance and results are conflicting regarding the amount of sway in amputees compared to controls. Few studies have assessed single-legged stance, but they all agree that sway is not different when standing on the non-amputated leg only or on a control leg, although standing time is decreased in amputees. Other variables, including cutaneous sensation, proprioception and strength have also been found to be decreased in both the amputated and non-amputated legs. Not much is known about single-legged stance, perturbed standing or the relationship between balance and cutaneous sensation, proprioception and strength in amputees. The goal of this study was to assess balance in traumatic transtibial amputees during perturbations when standing on the non-amputated leg. Whole body kinematics, 3D ground reaction forces and activity in eight trunk and lower limb muscles were recorded during the balance testing. Three other measurements were taken on the same leg as the balance test: cutaneous sensation, proprioception and strength. \n \nThere is no difference in sway between amputees and able-bodied controls although there is a trend suggesting an increase in sway in controls after the perturbation. Amputees exhibited less variability than controls in sway variables. Decreased variability in the balance task may be due to decreased balance confidence in amputees. No differences were found between groups in cutaneous sensation, proprioception and strength although a trend was revealed for controls to be stronger than amputees. Although some aspects of balance were significantly correlated to cutaneous sensation and proprioception, strength was the measure that was most often significantly correlated with balance in amputated individuals. Electromyographic activity increased after the perturbation in five muscles, although no differences were found between groups. The amputees and controls also did not differ in terms of muscle latencies, but a different activation pattern was found in the peroneus longus.
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».