کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6206810 1265652 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Muscle fatigue during repetitive voluntary contractions: A comparison between children with cerebral palsy, typically developing children and young healthy adults
ترجمه فارسی عنوان
خستگی عضلانی در طی انقباض دائمی تکراری: مقایسه ای بین کودکان مبتلا به فلج مغزی، به طور معمول کودکان و بزرگسالان جوان سالم
کلمات کلیدی
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
چکیده انگلیسی


- Lower muscle fatigability is observed in children with CP compared to TD children.
- This is demonstrated by combining peak torque and EMG median frequency analyses.
- Lower muscle fatigability coincides with lower muscle strength.

AimTo combine peak torque and EMG analyses to investigate the hypothesis that 1) children with cerebral palsy (CP) have lower muscle fatigability than typically developing children (TD) and whether 2) muscle fatigue correlates with muscle strength.MethodsSeven CP children, eight TD children and ten young healthy adults (YHA) performed an all-out fatigue test of 35 maximal concentric knee extension and flexion contractions on an isokinetic dynamometer. Angular velocity was set at 60°/s. Peak torque (PT) was determined per repetition and either normalized to bodyweight or maximum voluntary torque. Surface-EMG of quadriceps and hamstring muscles was measured to obtain changes in median frequency (EMG-mf) and smooth rectified EMG amplitude per contraction.ResultsDecline in PT differed between all groups for extensors and flexors, where YHA showed the largest decline and CP children the smallest decline over the course of the test. YHA showed a larger decline in EMG-mf of all quadriceps and hamstrings than TD and CP children, while TD children showed a larger decline in EMG-mf of m.rectus femoris and m.vastus lateralis than CP children.InterpretationResults confirm that children with CP show lower fatigability than TD children and that the lower fatigability coincides with lower maximal muscle strength.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gait & Posture - Volume 38, Issue 4, September 2013, Pages 962-967
نویسندگان
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