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. 2018 Oct 10;19:363. doi: 10.1186/s12891-018-2277-2

Fig. 1.

Fig. 1

Knee muscle strength index (Injured side/Uninjured side*100%); a extensor muscle strength index; b flexor muscle strength index. †p <  0.05 between normal and high BMI group; δ p < .05 between 16 weeks and 28 weeks