Détail de l'auteur
Auteur Takashi Nagai
Documents disponibles écrits par cet auteur
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Faire une suggestion Affiner la recherche
Effects of localized vibration on knee joint position sense in individuals with anterior cruciate ligament reconstruction / Takashi Nagai in Clinical Biomechanics, Vol. 55 (June 2018)
Titre : Effects of localized vibration on knee joint position sense in individuals with anterior cruciate ligament reconstruction Type de document : Article Auteurs : Takashi Nagai ; Nathaniel A. Bates ; Timothy E. Hewett Article en page(s) : p. 40-44 Langues : Anglais (eng) Descripteurs : HE Vinci
Proprioception ; Vibration
Mots-clés : Anterior Cruciate Ligament Ligament croisé antérieur Anterior Cruciate Ligament Reconstruction Reconstruction du ligament croisé antérieur Muscle Spindles Fuseaux neuromusculaires Résumé : Background
Anterior cruciate ligament injury can disrupt one's mechanoreceptors and result in decreased proprioception such as joint position sense and ultimately altered motor function. The application of localized vibration has been used to investigate the integrity of the sensorimotor system and the mechanisms of quadriceps function after anterior cruciate ligament injury and reconstruction. The purpose of the study is to evaluate joint position sense with and without vibration and compare among anterior cruciate ligament reconstructed, contralateral, and control limbs.
Fourteen subjects with anterior cruciate ligament reconstruction (8 males and 6 females) and fourteen control subjects (7 males and 7 females) participated in the study. Subjects sat on an isokinetic dynamometer chair with localized vibration strapped on the quadriceps tendon while visual and auditory cues were removed. Subjects were asked to remember an active target position and replicate that position actively. The absolute difference between the target and replicated trial was used as joint position sense. There were three trials at three target positions (15, 45, and 75 degrees of knee flexion) with and without vibration. The order of testing conditions was randomized. One-way analysis of variance or non-parametric equivalent (Kruskal-Wallis test) was used to compare among limbs. Significance was set at P Findings
There were no significant joint position sense differences among anterior cruciate ligament reconstructed, contralateral, and control limbs with or without vibration (P = 0.2070.914).
There are several potential reasons for the current findings: vibration-induced post effect, locations of vibration, types of vibration, and rehabilitation status. Future studies should expand the current investigation and explore both sensory and motor functions in anterior cruciate ligament reconstructed subjects.
Disponible en ligne : Non Permalink :
in Clinical Biomechanics > Vol. 55 (June 2018) . - p. 40-44[article]
Cote Support Localisation Section Disponibilité CliBio 2018 P2018/5 Périodique papier Woluwe (Place de l'Alma) Revues-W Consultation sur place uniquement
Exclu du prêtReliability, precision, and gender differences in knee internal/external rotation proprioception measurements / Takashi Nagai in Physical therapy in sport, 2012/4 (2012)
Titre : Reliability, precision, and gender differences in knee internal/external rotation proprioception measurements Type de document : Article Auteurs : Takashi Nagai ; Timothy C. Sell ; John P. Abt ; Scott M. Lephart Année de publication : 2012 Article en page(s) : pp. 233-237 Langues : Anglais (eng) Descripteurs : HE Vinci
Genou ; Proprioception
Mots-clés : Reproductibilité des résultats reproducibility of Results knee Résumé : "Objective
To develop and assess the reliability and precision of knee internal/external rotation (IR/ER) threshold to detect passive motion (TTDPM) and determine if gender differences exist.
Testretest for the reliability/precision and cross-sectional for gender comparisons.
University neuromuscular and human performance research laboratory.
Ten subjects for the reliability and precision aim. Twenty subjects (10 males and 10 females) for gender comparisons.
All TTDPM tests were performed using a multi-mode dynamometer. Subjects performed TTDPM at two knee positions (near IR or ER end-range). Intraclass correlation coefficient (ICC (3,k)) and standard error of measurement (SEM) were used to evaluate the reliability and precision. Independent t-tests were used to compare genders.
Main outcome measurements
TTDPM toward IR and ER at two knee positions.
Intrasession and intersession reliability and precision were good (ICC=0.680.86; SEM=0.22°0.37°). Females had significantly diminished TTDPM toward IR at IR-test position (males: 0.77°+0.14°, females: 1.18°+0.46°, p=0.021) and TTDPM toward IR at the ER-test position (males: 0.87°+0.13°, females: 1.36°+0.58°, p=0.026). No other significant gender differences were found (p>0.05).
The current IR/ER TTDPM methods are reliable and accurate for the testretest or cross-section research design. Gender differences were found toward IR where the ACL acts as the secondary restraint."
Disponible en ligne : Oui En ligne : http://www.physicaltherapyinsport.com/article/S1466-853X(11)00117-9/abstract Permalink :
in Physical therapy in sport > 2012/4 (2012) . - pp. 233-237[article]