Glucosamine/chondroitin combined with exercise for the treatment of knee osteoarthritis: a preliminary study

Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC 27109, United States.
Osteoarthritis and Cartilage (Impact Factor: 4.17). 11/2007; 15(11):1256-66. DOI: 10.1016/j.joca.2007.04.016
Source: PubMed


This preliminary study sought to determine whether using 1500/1200mg of glucosamine hydrochloride and chondroitin sulfate (GH/CS) is effective, both separately and combined with exercise, compared to a placebo plus exercise program in improving physical function, pain, strength, balance, and mobility in older adults with knee osteoarthritis (OA).
This double-blind, placebo-controlled, randomized clinical trial lasted 12 months. Participants included 89 older adults (age>/=50 years) with knee OA randomized to either GH/CS or placebo group. Phase I was a 6-month trial comparing the effects of assignment to either GH/CS or placebo. Phase II added 6 months of exercise for both groups. The primary outcome measure was Western Ontario and McMaster University Osteoarthritis Index (WOMAC) function, and secondary outcome measures included WOMAC pain, 6-min walk, balance, and knee strength.
Of the 89 randomized participants, 72 (81%) completed the study. The median pill compliance was 94% and 95% in Phase I, and, in Phase II, 97% and 91% for the GH/CS and placebo groups, respectively. Median exercise compliance during Phase II was 77% for the GH/CS group and 78% for the placebo group. WOMAC function and pain did not differ significantly between the groups at 6- or 12-month follow-up. There were also no significant differences between the groups in 6-min walk or knee strength; however, balance was better in the placebo group with approximately a 10% difference compared to the GH/CS group.
The GH/CS group was not superior to the placebo group in function, pain, or mobility after both phases of the intervention (pill only and pill plus exercise).

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    • " longer dosing regimens . One can try to continue glucosa - mine supplementation until return to play . 3 . As in our study , glucosamine was not found to be effective in studies in which the exercise therapy was combined with glucosamine administration ( Durmus , Alayli , Aliyazicioglu , Buyukakıncak , & Canturk , 2013 ; Kawasaki et al . , 2008 ; Messier et al . , 2007 ) . The potential usefulness of glucosamine may not be visible , since it may be masked behind the therapeutic efficacy of rehabilitation exercises . In other words , the positive contributions of rehabilitation may be far ahead of the benefit of glucosamine . 4 . The good results of glucosamine were reported in elderly patients who hav"
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