Table 4: JKOM and VAS questionnaire scores.

Week 0 week 4 week 8
JKOM 1 in all subjects (mm) Placebo 35.73 ± 19.02 −2.31 ± 18.94 −13.12 ± 21.07
Active 41.20 ± 21.96 −11.10 ± 25.61 −11.77 ± 28.29
p 0.40 0.17 0.81
JKOM 1 in subjects whose VAS score was better (mm) Placebo 32.77 ± 16.92 −0.92 ± 18.33 −16.00 ± 18.86
Active 30.93 ± 22.39 −3.80 ± 30.99 −4.20 ± 34.56
p 0.55 0.98 0.26
JKOM 1 in subjects whose VAS score was worst (mm) Placebo 38.69 ± 21.17 −3.69 ± 20.18 −10.23 ± 23.48
Active 51.47 ± 16.50 −18.40 ± 16.86 −19.33 ± 18.46
p 0.10 0.07 0.14
JKOM 2 - 5 in all subjects (points) Placebo 20.46 ± 9.30 −3.73 ± 7.75 −5.88 ± 9.17
Active 21.27 ± 7.52 −4.10 ± 6.04 −7.20 ± 7.44
p 0.66 0.70 0.69
JKOM 2 - 5 in subjects whose VAS score was better (points) Placebo 17.54 ± 7.50 −2.85 ± 8.72 −7.92 ± 9.13
Active 17.33 ± 5.64 −1.33 ± 6.80 −3.07 ± 5.91
p 0.835 0.503 0.059
JKOM 2 - 5 in subjects whose VAS score was worst (points) Placebo 23.38 ± 10.26 −4.62 ± 6.90 −3.85 ± 9.09
Active 25.20 ± 7.23 −6.87 ± 3.58 −11.33 ± 6.58
p 0.64 0.15 0.016*
Knee pain at rest (mm) Placebo 68.15 ± 27.87 10.23 ± 31.99 10.73 ± 25.56
Active 69.17 ± 26.46 6.13 ± 24.64 4.40 ± 38.53
p 0.67 0.71 0.84
Knee pain at walking (mm) Placebo 56.65 ± 23.32 12.12 ± 30.72 15.58 ± 25.00
Active 51.53 ± 24.33 14.43 ± 20.34 14.80 ± 32.77
p 0.38 0.99 0.77
Knee pain while climbing up/down stairs (mm) Placebo 43.00 ± 21.88 15.31 ± 27.51 18.00 ± 25.60
Active 43.30 ± 24.69 13.30 ± 23.83 13.63 ± 29.48
p 0.91 0.73 0.63

week 4, change from baseline to week 4; week 8, change from baseline to week 8. Values are shown as means ± standard deviations. Changes in subject values were analyzed using the Mann–Whitney U test to compare the test food and placebo food groups at each evaluation point. *p < 0.05, **p < 0.01.