1. Decreased peak arteriovenous oxygen difference during treadmill exercise testing in individuals infected with the human immunodeficiency virus1 
W.Todd Cade, PT, PhD, Lori E. Fantry, MD, MPH, Sharmila R. Nabar, PT, Randall E. Keyser, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 84, Issue 11, Pages (November 2003)
DOI: /S (03)

2. Fig 1
Cardiorespiratory variables for (A) Vo2, (B) cardiac output, (C) stroke volume, and (D) heart rate during peak and submaximal staged exercise in subjects with HIV. Data are mean ± SE. ∗ Significantly different from stage 4 (P<.05); † significantly different from stage 3 (P<.05); ‡ significantly different from stage 2 (P<.05); ∥ significantly different from stage 1 (P<.05); ∗∗ significantly different from rest (P<.05).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /S (03) )

3. Fig 2
Cardiorespiratory variables for (A) Vo2, (B) cardiac output, (C) stroke volume, and (D) heart rate during peak and submaximal staged exercise in controls. Data are mean ± SE. ∗ Significantly different from stage 4 (P<.05); † significantly different from stage 3 (P<.05); ‡ significantly different from stage 2 (P<.05); ∥ significantly different from stage 1 (P<.05); ∗∗ significantly different from rest (P<.05).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /S (03) )

4. Fig 3
Arteriovenous oxygen difference (a-vo2) during peak and submaximal staged exercise in (A) subjects with HIV and (B) controls. Data are mean ± SE. ∗ Significantly different from stage 4 (P<.05); † significantly different from stage 3 (P<.05); ‡ significantly different from stage 2 (P<.05); ∥ significantly different from stage 1 (P<.05); ∗∗ significantly different from rest (P<.05).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /S (03) )