The influence of aerobic fitness on cerebral white matter integrity and cognitive function in older adults: results of a one-year exercise intervention
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"The influence of aerobic fitness on..." refers methods in this paper
...…participants from further analyses, all missing data points in neuropsychological scores were imputed using the EM (expectationmaximization) method, which iteratively computes maximum likelihood estimates of missing data given the available data [Dempster et al., 1977; Schafer and Graham, 2002]....
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...Therefore, instead of excluding these participants from further analyses, all missing data points in neuropsychological scores were imputed using the EM (expectationmaximization) method, which iteratively computes maximum likelihood estimates of missing data given the available data [Dempster et al., 1977; Schafer and Graham, 2002]....
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"The influence of aerobic fitness on..." refers methods in this paper
...2 [TractBased Spatial Statistics, Smith et al., 2006]....
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...To analyze the DTI data, we applied tract-based spatial statistics [TBSS; Smith et al., 2006] to each individual’s images and then extracted the mean value for each diffusion metric (FA, RD, and AD) from the appropriate region of interest (ROI)....
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"The influence of aerobic fitness on..." refers background in this paper
...Future research is needed to assess this hypothesis, perhaps through comparison of the effects of fitness training on regional and global measures of anatomical network organization [Hagmann et al., 2008]....
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