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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: Muscle Nerve. 2018 Jul 24;58(5):631–638. doi: 10.1002/mus.26161

Figure 4. Heterogeneity in 6 minute walk test performance over 48 months.

Figure 4

As the study progressed, an increasing number of boys lost ambulation. However, some boys were able to maintain performance over up to 4 years, notably all those with baseline 6MWD ≥451m.