Table 1.

Biomechanical functions of the shared muscle synergies during gait.

Synergy	Function	Principal muscles	Biomechanical function
1	F1	TFL – GMD	Stabilize hip joint during heel strike and the load acceptance phase
2	F2	LGS – PL – SOL	Generate propulsion at mid and terminal stance
3	F3	LDR – LDL	Control the trunk position in the frontal plane at the heel strike of the homolateral and contralateral foot
4	F4	TA	Decelerate the foot during first rocker and control forefoot clearance during swing phase
5	F5	MH – LH	Decelerate the leg at the end of the swing phase