Deans' stroke musings: A comparison of three accelerometry-based devices for estimating energy expenditure in adults and children with cerebral palsy

Changing stroke rehab and research worldwide now.Time is Brain! trillions and trillions of neurons that DIE each day because there are NO effective hyperacute therapies besides tPA(only 12% effective). I have 523 posts on hyperacute therapy, enough for researchers to spend decades proving them out. These are my personal ideas and blog on stroke rehabilitation and stroke research. Do not attempt any of these without checking with your medical provider. Unless you join me in agitating, when you need these therapies they won't be there.

What this blog is for:

My blog is not to help survivors recover, it is to have the 10 million yearly stroke survivors light fires underneath their doctors, stroke hospitals and stroke researchers to get stroke solved. 100% recovery. The stroke medical world is completely failing at that goal, they don't even have it as a goal. Shortly after getting out of the hospital and getting NO information on the process or protocols of stroke rehabilitation and recovery I started searching on the internet and found that no other survivor received useful information. This is an attempt to cover all stroke rehabilitation information that should be readily available to survivors so they can talk with informed knowledge to their medical staff. It lays out what needs to be done to get stroke survivors closer to 100% recovery. It's quite disgusting that this information is not available from every stroke association and doctors group.

Friday, August 8, 2014

A comparison of three accelerometry-based devices for estimating energy expenditure in adults and children with cerebral palsy

By applying this to survivors you could determine how much of our fatigue is based upon our muscle use. Then our doctors might have some clue for the research direction to go down to solve our fatigue problems. Because right now we have absolutely nothing to help us with our fatigue.
http://www.jneuroengrehab.com/content/11/1/116/abstract

Jennifer M Ryan, Michael Walsh and John Gormley

Author Affiliations

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Journal of NeuroEngineering and Rehabilitation 2014, 11:116 doi:10.1186/1743-0003-11-116
Published: 5 August 2014

Abstract (provisional)

Background

Advanced accelerometry-based devices have the potential to improve the measurement of everyday energy expenditure (EE) in people with cerebral palsy (CP). The aim of this study was to investigate the ability of two such devices (the Sensewear ProArmband and the Intelligent Device for Energy Expenditure and Activity) and the ability of a traditional accelerometer (the RT3) to estimate EE in adults and children with CP.

Methods

Adults (n = 18; age 31.9 +/- 9.5 yr) and children (n = 18; age 11.4 +/- 3.2 yr) with CP (GMFCS levels I-III) participated in this study. Oxygen uptake, measured by the Oxycon Mobile portable indirect calorimeter, was converted into EE using Weir's equation and used as the criterion measure. Participants' EE was measured simultaneously with the indirect calorimeter and three accelerometers while they rested for 10 minutes in a supine position, walked overground at a maximal effort for 6 minutes, and completed four treadmill activities for 5 minutes each at speeds of 1.0 km.h-1, 1.0 km.h-1 at 5% incline, 2.0 km.h-1, and 4.0 km.h-1.

Results

In adults the mean absolute percentage error was smallest for the IDEEA, ranging from 8.4% to 24.5% for individual activities (mean 16.3%). In children the mean absolute percentage error was smallest for the SWA, ranging from 0.9% to 23.0% for individual activities mean (12.4%). Limits of agreement revealed that the RT3 provided the best agreement with the indirect calorimeter for adults and children. The upper and lower limits of agreement for adults were 3.18 kcal.min-1 (95% CI = 2.66 to 3.70 kcal.min-1) and -2.47 kcal.min-1 (95% CI = -1.95 to -3.00 kcal.min-1), respectively. For children, the upper and lower limits of agreement were 1.91 kcal.min-1 (1.64 to 2.19 kcal.min-1) and -0.92 kcal.min-1 (95% CI = -1.20 to -0.64 kcal.min-1) respectively. These limits of agreement represent -67.2% to 86.3% of mean EE for adults and -36.5% to 76.3% of mean EE for children.

Conclusions

Although the RT3 provided the best agreement with the indirect calorimeter the RT3 could significantly overestimate or underestimate individual estimates of EE. The development of CP-specific algorithms may improve the ability of these devices to estimate EE in this population.