Knickerbocker's theory does not explain why the first firm in an oligopoly decides to undertake FDI rather than to export or license. (Hills, 2008) also suggested that the imitative theory does not address the issue of whether FDI is more efficient than exporting or licensing for expanding abroad.
Isometrically, the lower back, the upper back, the abdominals, the trunk muscles, the costal muscles, and the shoulders and arms are all essential to the exercise and thus are trained when squatting with the proper form.
The box squat is a free weights exercise that primarily targets the quads and to a lesser degree also targets the calves, lower back, glutes, and hamstrings. The only box squat equipment that you really need is the following: barbell, flat bench, and box.