Table 3.

Mean changes in the STEPS and control groups at 12 months

MEAN CHANGE IN PVO2MAX, ML/KG/MIN (95% CI)
CHARACTERISTICSSTEPS (N = 169*)CONTROL (N = 160)
Sex
  • Men (n = 155)2.81 (1.80 to 3.82)3.38 (1.95 to 4.80)
  • Women (n = 174)3.20 (2.41 to 4.00)1.23 (0.00 to 2.46)
Age, y
  • < 65 (n = 179)2.98 (2.17 to 3.79)2.31 (0.77 to 3.87)
  • ≥ 65 (n = 139)3.10 (2.09 to 4.10)2.11 (1.00 to 3.22)
BMI, kg/m2
  • ≤ 24.9 (n = 90)3.62 (2.03 to 5.21)0.57 (−1.25 to 2.39)
  • 25.0–29.9 (n = 129)2.99 (2.11 to 3.87)2.82 (1.02 to 4.61)
  • ≥ 30.0 (n = 108)2.60 (1.57 to 3.63)3.03 (1.69 to 4.37)
Setting
  • Urban (n = 166)2.74 (1.91 to 3.58)2.03 (0.81 to 3.24)
  • Rural (n = 163)3.34 (2.39 to 4.29)2.35 (0.96 to 3.74)
Region
  • British Columbia (n = 101)5.36 (4.02 to 6.69)1.67 (0.27 to 3.06)
  • Alberta (n = 47)3.17 (1.33 to 5.02)2.14 (−0.72 to 5.00)
  • Ontario (n = 118)2.16 (1.15 to 3.18)2.68 (1.14 to 4.23)
  • Nova Scotia and New Brunswick (n = 62)2.22 (1.22 to 3.22)2.55 (−1.12 to 6.22)
  • BMI —body mass index, pVO2max—predicted maximal oxygen consumption.

  • * In the STEPS group, 23 of the original 193 patients withdrew, and 1 died of causes not related to the study.

  • In the control group, 6 of the original 167 patients withdrew, and 1 died of causes not related to the study.