Table 2.

Elongation of muscle, tendon and fascicles during a standard stretch from 0 to 25 deg, pre- and post-conditioning

0–25 deg	Pre-conditioning	Post-conditioning
MTU elongation (cm)	1.98 ± 0.03	1.98 ± 0.03
MTJ elongation (cm)	0.92 ± 0.06	1.16 ± 0.05*†
Tendon elongation (cm)	1.06 ± 0.04	0.82 ± 0.05*
Fascicle elongation (cm)	0.97 ± 0.08	0.98 ± 0.05

Data shown include: distal muscle and tendon displacements (elongation) pre- and post-conditioning stretches. Gastrocnemius medialis muscle–tendon unit (MTU) elongation was calculated from changes in angle at the ankle; myotendinous junction (MTJ) movement detected by ultrasonography and tendon extension determined by subtracting MTJ movement from that of the MTU. Values are also given for change in muscle fascicle lengths.

^*Significant difference from pre-conditioning (P < 0.05).

^†Significant difference from tendon elongation (P < 0.05).