Time–Frequency Analysis of Muscle Activation Patterns during the Instep Kick in Elite and Amateur Soccer Players

Table 2. Marker placement used for the motion capture model.

Segment	Marker name	Anatomical placement	Number
Upper body	RAcromium	Right acromion process, sternum, and left acromion process	3
	Sternum
	LAcromium
Pelvis	V.Sacral	Sacral region / posterior pelvis marker, right anterior superior iliac spine, and left anterior superior iliac spine	3
	R.ASIS
	L.ASIS
Bilateral thighs	R/L.Thigh.Upper	Upper, anterior, and posterior aspects of each thigh	6
	R/L.Thigh.Front
	R/L.Thigh.Rear
Bilateral knees	R/L.Knee.Lat	Lateral and medial femoral epicondyles of each knee	4
Bilateral knees	R/L.Knee.Med	Lateral and medial femoral epicondyles of each knee	4
Bilateral shanks	R/L.Shank.Upper	Upper, anterior, and posterior aspects of each shank	6
	R/L.Shank.Front
	R/L.Shank.Rear
Bilateral ankles	R/L.Ankle.Lat	Lateral and medial malleoli of each ankle	4
Bilateral ankles	R/LAnkle.Med	Lateral and medial malleoli of each ankle	4
Bilateral feet	R/L.Heel	Calcaneus / heel and lateral and medial forefoot markers of each foot	6
	R/L.Toe.Lat
	R/L.Toe.Med

A total of 32 reflective markers were used, including three upper-body markers, three pelvis markers, and 13 lower-limb markers on each side. R = right; L = left; ASIS = anterior superior iliac spine.