Nine studies27,29–36 measured peak VO2 in a total of nearly 400
patients. Mean baseline ± standard deviation of peak VO2 for both
exercise and control participants was 21.0 ± 5.0 ml kg−1 min−1.
Mean age was 51 years and the age-predicted peak VO2 for a 51 year
old, sedentary, non-obese adult is 28.8 ml kg−1 min−1 indicating
CKD patients have a peak VO2 about 70% of age-predicted value.20
Exercise training may be beneficial as low peak VO2 is associated
with increased mortality risk.11 Data from studies of combined
aerobic and strength training convey a weighted mean 29 ± 11%
improvement in peak VO2, similar to the 23 ± 10% from isolated
aerobic studies. Peak VO2 data from resistance training studies is
unavailable.