Kinematic and Electromyographic Activity Changes during Back Squat with Submaximal and Maximal Loading
Table 1
A description of the positioning of each electrode in relation to the muscle being tested developed by Brouer and Houtz [26] and described by Gullet et al. [4].
Muscle
Electrode placement
Rectus femoris
Approximately midway between the anterior inferior iliac spine and the patella on the anterior side of the thigh
Vastus lateralis
Approximately two-thirds of the thigh length from the greater trochanter on the lateral side of the thigh
Vastus medialis
Approximately three-fourths of the thigh length from the anterior inferior iliac spine on the medial side of the thigh
Erector spinae
Three centimeters lateral to the L3 spinous process
Gluteus maximus
50% on the line between the sacral vertebrae and the greater trochanter. This position corresponds with the greatest prominence of the middle of the buttocks well above the visible bulge of the greater trochanter
Biceps femoris
Midway between the ischial tuberosity and the lateral condyle of the femur on the posterior side of the thigh
Semitendinosus
Midway between the ischial tuberosity and the medial condyle of the femur on the posterior side of the thigh
