isokinetic dynamometry of the knee extensors and flexors in
نویسندگان
چکیده
background :this paper explores the gender-related bilateral differences of extensor and flexor torques of the knee joint at low and high angular velocities in iranian healthy males and females. methods : 70 healthy subjects (29 males (26.61±4.34 yrs and 41 females with average age of 23.07±3.70 yrs)) were participated in this study. isokinetic peak torque values for knee extensors and flexors in concentric and eccentric contraction modes were measured and flexors and extensors strength ratios (hqr) computed among both dominant and non-dominant legs in lying position at 60 and 180°.s-1angular velocities. results : there was significant gender-velocity interactions detected for knee flexor to extensor strength ratios presenting that increasing velocity escaled this, ratios in females more than males(p< 0.05). there was no gender-velocity-leg side interaction (p>0.05). bilateral differences were found for eccentric flexor peak torques (p< 0.05). by increasing velocity, peak torque values decreased and hqr was increased (p< 0.05). conclusion : measurement procedures including test position is an important factor when interpreting gender- related and bilateral differences of isokinetic knee strength ratios in healthy individuals.
منابع مشابه
Isokinetic dynamometry of the knee extensors and flexors in
Background :This paper explores the gender-related bilateral differences of extensor and flexor torques of the knee joint at low and high angular velocities in Iranian healthy males and females. Methods : 70 healthy subjects (29 males (26.61±4.34 yrs and 41 females with average age of 23.07±3.70 yrs)) were participated in this study. Isokinetic peak torque values for knee extensors and flex...
متن کاملIsokinetic dynamometry of the knee extensors and flexors in Iranian healthy males and females
BACKGROUND This paper explores the gender-related bilateral differences of extensor and flexor torques of the knee joint at low and high angular velocities in Iranian healthy males and females. METHODS 70 healthy subjects (29 males (26.61±4.34 yrs and 41 females with average age of 23.07±3.70 yrs)) were participated in this study. Isokinetic peak torque values for knee extensors and flexors i...
متن کاملIsokinetic dynamometry of knee flexors and extensors: comparative study among non-athletes, jumper athletes and runner athletes.
UNLABELLED Participation in intensive sports activities leads to muscular specializations that may generate alterations in involved articular forces and cause static (posture) and dynamic changes (alterations of articular stability, coordination, etc.). Prevention of injury requires specific functional muscular evaluation in all athletes and for any kind of sport. OBJECTIVE To dynamically eva...
متن کاملIsokinetic strength and endurance of the knee extensors and flexors in trans-tibial amputees.
Significant levels of muscular fatigue alter the co-ordination patterns and the ability to accomplish proper daily functions, especially in patients with initial low levels of strength. The purpose of this study was to evaluate the strength and endurance of the quadriceps and hamstring muscles in trans-tibial amputees. Concentric strength and endurance of the thigh muscles were measured bilater...
متن کاملTest-retest reliability of isokinetic dynamometry for the assessment of spasticity of the knee flexors and knee extensors in children with cerebral palsy.
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متن کاملReliability of isokinetic evaluation in passive mode for knee flexors and extensors in healthy children.
BACKGROUND The isokinetic dynamometer has been considered the gold-standard measurement of muscle performance. However, the reliability for the passive mode in children has not been reported to date. OBJECTIVES The purpose was to evaluate the reliability of the isokinetic dynamometer in passive mode in children. METHOD Twenty-one healthy children (ten girls, eleven boys), aged 5 to 12 years...
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عنوان ژورنال:
medical journal of islamic republic of iranجلد ۲۸، شماره ۱، صفحات ۷۰۲-۷۰۷
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