1. Blunted heart rate response to upright tilt in people with Down syndrome 
Bo Fernhall, PhD, Arturo Figueroa, MD, PhD, Scott Collier, MS, Tracy Baynard, MS, Ifigenia Giannopoulou, PhD, Styliani Goulopoulou, MS 
Archives of Physical Medicine and Rehabilitation 
Volume 86, Issue 4, Pages (April 2005)
DOI: /j.apmr
Copyright © 2005 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

2. Fig 1
(A) Heart rate, (B) systolic blood pressure (SBP), and (C) diastolic blood pressure (DBP) response to head-up tilt at 80° for all subjects (mean ± SD). In both groups, values increased during the first 30 seconds of head-up tilt and values remained stable thereafter. Heart rate increased significantly more for controls than for subjects with DS. *Significant increase from rest (P<.05); †significant group difference (P<.05).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2005 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

3. Fig 2
Heart rate response to upright tilt at 80° for all subjects, adjusted for resting and peak heart rate (mean ± SD). Heart rate significantly increased in the control group during the tilt and was significantly higher in this group at the 30-, 60-, and 90-second time periods. *Significant increase from rest (P<.05); †significant group difference (P<.05).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2005 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions