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.
Legs. Pushing your body up and down during a squat activates many of the muscles in your upper and lower legs. Your quadriceps and hamstrings are two primary muscles worked during squats. You'll likely feel those muscles working as you squat up and down. Including squats in your strength training routine helps tone and define the muscles in your thighs and calves.