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Table 2.

Musculoskeletal architecture parameters for the lateral gastrocnemius measured from ultrasound images

SprintersNon-sprintersP-value
LG thickness (mm) 15.5±1.9 14.7±2.0 0.330 
LG pennation angle (deg.) 12.8±1.2 13.7±2.1 0.212 
LG fascicle length (mm) 69.9±6.2 62.7±8.3 0.024 
Achilles' tendon moment arm (mm) 31.0±3.7 41.6±5.5 <0.001 
Fascicle length:moment arm 2.28±0.32 1.53±0.27 <0.001 
SprintersNon-sprintersP-value
LG thickness (mm) 15.5±1.9 14.7±2.0 0.330 
LG pennation angle (deg.) 12.8±1.2 13.7±2.1 0.212 
LG fascicle length (mm) 69.9±6.2 62.7±8.3 0.024 
Achilles' tendon moment arm (mm) 31.0±3.7 41.6±5.5 <0.001 
Fascicle length:moment arm 2.28±0.32 1.53±0.27 <0.001 

LG, lateral gastrocnemius

Values are means ± s.d. P-values are for two-tailed t-tests for mean differences between groups

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