Table 1. Maximum length changes in MTU and fascicle of BFlh. Speeds Swing phase Late swing phase MTU (cm) Fascicle (cm) Ratio (%) MTU (cm) Fascicle (cm) Ratio (%) 4m/s 7.05 ± 1.55 1.31 ± 0.29 18.58 ± 5.1 4.41 ± 1.51 1.02 ± 0.35 23.03 ± 7.8 5m/s 7.59 ± 1.28 1.90 ± 0.32 25.03 ± 4.7 5.12 ± 2.08 1.28 ± 0.52 24.50 ± 8.9 6m/s 7.92 ± 1.33 1.60 ± 0.63 20.20 ± 8.4 3.27 ± 0.99 1.12 ± 0.34 31.98 ± 9.3 Values are mean ± SD. Ratio = Fascicle length/ MTU length. The differences between running speeds and ratios of fascicle length and MTU found no significant differences during both the swing and late swing phases. The maximum length changes represent the difference between the maximum length and the minimum length.