1. Six-Minute Walk Test in Patients With Down Syndrome: Validity and Reproducibility 
Jeroen C. Vis, MD, Hanneke Thoonsen, MD, Marielle G. Duffels, MD, Rianne A. de Bruin-Bon, Sylvia A. Huisman, MD, Arie P. van Dijk, MD, PhD, Elke S. Hoendermis, MD, PhD, Rolf M. Berger, MD, PhD, Berto J. Bouma, MD, PhD, Barbara J. Mulder, MD, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 90, Issue 8, Pages (August 2009)
DOI: /j.apmr
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions

2. Fig 1
Distance walked by the group with severe cardiac disease and the group with no or mild cardiac disease for all patients and for 2 subgroups divided by level of intellectual disability. Representations are median and centiles.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions

3. Fig 2
Bland and Altman plot for data from the two 6MWTs. The difference between the first and second 6MWD plotted against the subject's mean of the two 6MWTs. The center dashed line equals the mean difference between the 2 tests and outer dashed lines equal ±2 SD of the mean.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2009 American Congress of Rehabilitation Medicine Terms and Conditions