Reproducibility of gastrocnemius medialis muscle architecture during treadmill running

Symmetry and reproducibility of the components of dynamic stability in young adults at different walking velocities on the treadmill

“…It is known that older adults demonstrate increased gait variability (Hausdorff, 2005), suggesting that reproducibility and symmetry of the dynamic gait stability parameters might decrease slightly with advancing age. However, we do not have evidence to suggest that our findings are gender-specific, because our degree of reproducibility in lower extremity joint kinematics also accords with the literature examining young male adults (Aggeloussis et al, 2010;Giannakou et al, 2011). One might argue that using a wider range of subject's body height and body mass would affect the current findings.…”

Neural Modulation of Muscle–Tendon Control Strategy after a Single Practice Session

“…These changes will enable the gastroenemius MTU to start shortening with a greater foree, which are likely to be the physiological basis for the neural modulation observed in the present study. It should be noted that the deerease in the fascicle lengthening (3 mm) in the present study was less than the variance of fascicle measurement reported in the previous studies (range = 3-3.5 mm) (1,9). Because the movement used in the present study was simpler and more stable than that used in the previous studies (1,9), the reliability of the fascicle length measurement should have been higher.…”

Human ankle plantar flexor muscle–tendon mechanics and energetics during maximum acceleration sprinting

“…MTU, muscle fascicle and tendon lengths were normalized, respectively, to resting MTU length (l To test whether the model-based predictions were physiologically reasonable, we compared the model-based muscle fascicle lengths for the ankle plantar flexors against previously reported ultrasound measurements. For one representative participant, we collected additional data for running at a steady-state speed of 3.5 m s 21 in order to directly compare model-based fascicle lengths to ultrasound-measured fascicle lengths for the SO and MG [10,40,41].…”

“…Significant main Muscle fascicle lengths are expressed as a percentage of the total muscle fascicle length change that occurred from foot strike to toe-off. Data for in vivo measured (ultrasound-based) muscle fascicle lengths for the SO and MG were obtained from the literature [10,40,41]. Note that available ultrasound-based data have been collected from participants predominantly exhibiting a rear-foot strike pattern.…”