Evaluation of knee peak torque in athletic and sedentary children.
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Your vote was cast
Thank you for your feedback
Thank you for your feedback
MetadataShow full item record
Other TitlesAtletik ve sedanter çocuklarda diz zirve torkunun değerlendirilmesi
AbstractObjectives: We examined the influence of sex, level of activity, and pubertal status on knee extension (Ext) and flexion(Fl) peak torque (PT) in children using an allometric modeling approach. Methods: A total of 140 students (67 males, 73 females)aged 12/13 years were enrolled from a Hong Kong junior high school, whose curricula were based on physical education (n=69) or arts (n=71). Isokinetic concentric Ext and Fl PT of the dominant leg was assessed at 1.04 rad/sec using a Cybex II+ dynamometer and body mass,stature, and pubertal stage were measured. A repeated-measures ANOVA test was performed on absolute PT data with muscle action (Ext and Fl) as a within-subject factor and between-subject factors including sex, group,and pubertal stage. To assess the effects on body sizeadjusted PT, linear ANCOVA and log-linear ANCOVA techniques were used with body mass and stature taken as covariates. Results: Peak torque was significantly greater in boys compared to girls, and in the physical education group compared to the arts group. When PT was adjusted for differences in body size, there was a greater difference in PT between girls in the two groups compared to boys, and there was a significant effect of pubertal stage. Allometric analysis showed that PT was influenced more by stature than body mass, and PT increased at a greater rate than body size (both p<0.01). Conclusion: There may be a need for a physical activity intervention in sedentary 12/13 year old girls. Peak torque appears to increase disproportionately to body size. This may result from a greater increase in leg muscle mass relative to body mass
CitationActa orthopaedica et traumatologica turcica, 43 (6):484-90
PublisherEkin Medical Publishing
JournalActa orthopaedica et traumatologica turcica
DescriptionArticle also available in Turkish
- Knee flexion to extension peak torque ratios and low-back injuries in highly active individuals.
- Authors: Koutedakis Y, Frischknecht R, Murthy M
- Issue date: 1997 May
- Normalizing lower-extremity strength data for children without disability using allometric scaling.
- Authors: Wren TA, Engsberg JR
- Issue date: 2007 Nov
- Longitudinal changes in isokinetic leg strength in 10-14-year-olds.
- Authors: De Ste Croix MB, Armstrong N, Welsman JR, Sharpe P
- Issue date: 2002 Jan-Feb
- Angle- and velocity-specific alterations in torque and semg activity of the quadriceps and hamstrings during isokinetic extension-flexion movements.
- Authors: Croce RV, Miller JP
- Issue date: 2006 Mar-Apr
- Peak torque occurrence in the range of motion during isokinetic extension and flexion of the knee.
- Authors: Kannus P, Beynnon B
- Issue date: 1993 Nov