Eccentric/concentric torque deficits in the quadriceps muscle

dc.contributor.authorTrudelle-Jackson, Elaine
dc.contributor.authorMeske, Neil
dc.contributor.authorHighgenboten, Carl
dc.contributor.authorJackson, Allen
dc.descriptionArticle originally published in Journal of Orthopaedic & Sports Physical Therapy, 11(4), 142-145.
dc.description.abstractThe purpose of the present investigation was to estimate the percentage of asymptomatic subjects who demonstrate an eccentric/concentric torque deficit in leg extension. One hundred and five subjects with a mean age of 23.51 were tested on the KIN-COM® dynamometer for maximum eccentric and concentric torque during leg extension using an 80° range of motion at 50°/sec velocity. The subjects were categorized as demonstrating a deficit if at any point in the range of motion the eccentric torque was 85% or less of the corresponding concentric torque. The results revealed that 35–54% of the subjects, depending upon sex or leg tested, demonstrated a deficit. These results suggest that many asymptomatic individuals possess an eccentric/concentric torque deficit. These findings question the validity of previous clinical research indicating that patients with anterior knee pain tend to possess an eccentric/concentric torque deficit and that correction of the deficit alleviates the pain.en_US
dc.identifier.citationThis is the abstract for an article that is available at Recommended citation: Trudelle-Jackson, E., Meske, N., Highgenboten, C., & Jackson, A. (1989). Eccentric/concentric torque deficits in the quadriceps muscle. Journal of Orthopaedic & Sports Physical Therapy, 11(4), 142-145. This item has been deposited in accordance with publisher copyright and licensing terms and with the author’s permission.en_US
dc.publisherThe Journal of Orthopaedic & Sports Physical Therapy®, Inc. (JOSPT®)en_US
dc.subjectAnterior knee pain
dc.subjectChondromalacia patella
dc.subjectExtensor mechanism malalignment
dc.titleEccentric/concentric torque deficits in the quadriceps muscleen_US


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