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331.
Spastic hip displacement is the second most common deformity seen in children with cerebral palsy (CP), and the long-term
effects can be debilitating. Progressive hip displacement leading to dislocation can result in severe pain as well as impaired
function and quality of life. Recent population-based studies have demonstrated that a child’s Gross Motor Functional Classification
System (GMFCS) level is most predictive for identifying hips “at-risk” for progressive lateral displacement. As a result,
in many developed countries, hip surveillance has now been adopted as an integral piece of the comprehensive care puzzle for
the management of children with spastic hip displacement. This paper reviews the spectrum of treatments available for progressive
hip displacement, examines the current literature on the success of hip surveillance, and illustrates an example of a current
hip surveillance program stratified by the GMFCS level. 相似文献
332.
Nummela AT Paavolainen LM Sharwood KA Lambert MI Noakes TD Rusko HK 《European journal of applied physiology》2006,97(1):1-8
This study investigated the effects of the neuromuscular and force–velocity characteristics in distance running performance and running economy. Eighteen well-trained male distance runners performed five different tests: 20 m maximal sprint, running economy at the velocity of 4.28 m s−1, 5 km time trial, maximal anaerobic running test (MART), and a treadmill test to determine VO2max. The AEMG ratio was calculated by the sum average EMG (AEMG) of the five lower extremity muscles during the 5 km divided by the sum AEMG of the same muscles during the maximal 20 m sprinting. The runners’ capacity to produce power above VO2max (MART VO2gain) was calculated by subtracting VO2max from the oxygen demand of the maximal velocity in the MART (V
MART). Velocity of 5 km (V
5K) correlated with V
MART (r=0.77, p<0.001) and VO2max (r=0.49, p<0.05). Multiple linear regression analysis showed that MART VO2gain and VO2max explained 73% of the variation in V
5K. A significant relationship also existed between running economy and MART VO2gain (r=0.73, p<0.01). A significant correlation existed between V
5K and AEMG ratio during the ground contact phase at the 3 km (r=0.60, p<0.05) suggesting that neural input may affect distance running performance. The results of the present study support the idea that distance running performance and running economy are related to neuromuscular capacity to produce force and that the V
MART can be used as a determinant of distance-running performance. 相似文献