Table 4: Randomised controlled trials on weight loss.

  N Average Age ± SD % Women Lifestyle Affected Joint Exclusion Criteria Blinded Assessment Patients Groups Assessment Results
Messier (2004) [23] 316 69.0 ± 0.8 74% independent Knee MMS < 24 Yes -control (education)
-diet+exercise (DE)
-diet (D)
-exercise (E)
18 months ↓ pain (DE)*
↑function (DE)*
Miller (2006) [24] 87 69.7 ± 0.6 64.9% independent Knee Pathologies CI exercise Yes -control (education)
-diet+exercise
6 months ↓ pain *
↑function*

CI: contra-indicating °: significant intragroup difference; *: significant intergroup difference.