2 research outputs found
A comparison of methods for determining the rate of force development during isometric midthigh clean pulls
Twelve female division I collegiate volleyball players were recruited to examine the reliability of several methods for calculating the rate of force development (RFD) during the isometric midthigh clean pull. All subjects were familiarized with the isometric midthigh clean pull and participated in regular strength training. Two isometric midthigh clean pulls were performed with 2 minutes rest between each trail. All measures were performed in a custom isometric testing device that included a step-wise adjustable bar and a force plate for measuring ground reaction forces. The RFD during predetermined time zone bands (0-30, 0-50, 0-90, 0-100, 0-150, 0-200, and 0-250 milliseconds) was then calculated by dividing the force at the end of the band by the band's time interval. The peak RFD was then calculated with the use of 2, 5, 10, 20, 30, and 50 milliseconds sampling windows. The average RFD (avgRFD) was calculated by dividing the peak force (PF) by the time to achieve PF. All data were analyzed with the use of intraclass correlation alpha (ICCα) and the coefficient of variation (CV) and 90% confidence intervals. All predetermined RFD time bands were deemed reliable based on an ICCα >0.95 and a CV <4%. Conversely, the avgRFD failed to meet the reliability standards set for this study. Overall, the method used to assess the RFD during an isometric midthigh clean pull impacts the reliability of the measure and predetermined RFD time bands should be used to quantify the RFD
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Rehabilitation Outcomes in Children with Acute Flaccid Myelitis from 2014 to 2019: A Multicenter Retrospective Review
Acute Flaccid Myelitis (AFM) is a childhood illness characterized by sudden onset weakness impairing function. The primary goal was to compare the motor recovery patterns of patients with AFM who discharged home or to inpatient rehabilitation. Secondary analyses focused on recovery of respiratory status, nutritional status, neurogenic bowel and bladder in both cohorts.
Eleven tertiary care centers in the United States performed a retrospective chart review of children with AFM between January 1st, 2014 and October 1st, 2019. Data included demographics, treatments, and outcomes on admission, discharge, and follow-up visits.
Medical records of 109 children met inclusion criteria. 67 children required inpatient rehabilitation while 42 children discharged directly home. The median age was 5 years (range 4 months – 17 years) and median time observed was 417 days (Interquartile range = 645 days). Distal upper extremities recovered better than the proximal upper extremities. At acute presentation, children who needed inpatient rehabilitation had significantly higher rates of respiratory support (p<0.001), nutritional support (p<0.001) and neurogenic bowel (p=0.004) and bladder (p=0.002). At follow up, those who attended inpatient rehabilitation continued to have higher rates of respiratory support (28% vs 12%, p=0.043) however nutritional status and bowel/bladder function were no longer statistically different.
All children made improvements in strength whether they discharged home or to inpatient rehabilitation. Proximal muscles remained weaker than distal muscles in the upper extremities. Children who qualified for inpatient rehabilitation had ongoing respiratory needs at follow up, however, recovery of nutritional status and bowel/bladder were similar