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Knee arthritis affects more than 250 million people worldwide.
This study came from a research team from the Department of Health and Exercise Science at Wake Forest University and evaluated the effects of low-intensity strength training and high-intensity strength training on knee arthritis.
The subjects who completed the experiment were randomly received high-intensity strength training (109 cases), low-intensity strength training (108 cases) or attention control (103 cases, control group) training for 18 months.
The primary endpoint of the trial is the patient's self-reported knee pain (assessed by WOMAC index [0 best-20 most severe]), and the maximum knee pressure during walking.
During the 18-month follow-up, after adjusting gender, body mass index, and baseline arthritis degree, the data showed that the high-intensity strength training group and the low-intensity strength training group (5.
The knee muscle strength of the two strength training groups at 18 months was significantly higher than that of the control group, but there was no significant difference between the high-intensity and low-intensity groups.
The research team pointed out that in this trial, the control group received stronger training and interaction, which improved compliance.
There were 87 non-serious adverse events in the trial (53 cases in the high-intensity group; 30 cases in the low-intensity group; 4 cases in the control group) and 13 serious adverse events unrelated to the study (5 cases in the high-intensity group; 3 cases in the low-intensity group) ; 5 cases in the control group).
Based on these findings, the research team believes that compared to low-intensity strength training or attention control training, high-intensity strength training for 18 months did not significantly reduce knee pain or knee pressure.
Reference
[1] Messier SP, Mihalko SL, Beavers DP, et al.
[2] High-intensity strength training no added benefit for knee osteoarthritis.
