Table 1.

Geometric means (95% confidence intervals) for IGF-1 and IGFBP-3 for postmenopausal women randomized to aerobic exercise intervention vs. control group (stretching) at baseline, 3 mo, and 12 mo

Baseline
3 mo
12 mo
ExercisersStretchersExercisersStretchersP*ExercisersStretchersP
IGF-1, ng/mL99 (91-107)103 (97-110)94 (87-102)100 (92-108)0.6597 (89-106)102 (94-110)0.99
IGFBP-3, μg/mL3.95 (3.72-4.20)3.84 (3.59-4.11)3.58 (3.35-3.83)3.70 (3.45-3.96)0.133.71 (3.45-4.00)3.63 (3.37-3.91)0.88
IGF-1/IGFBP-325.0 (23.2-27.0)26.9 (25.2-28.7)26.2 (24.4-28.3)27.0 (25.0-29.0)0.2926.1 (23.9-28.6)28.0 (25.7-30.5)0.90
  • * Difference in protein change from baseline to 3 months in exercisers versus controls.

  • Difference in protein change from baseline to 12 months in exercisers versus controls.