This study quantified postural tone by measuring resistance in the hips, trunk, and neck to very slow twisting during standing. Comparing teachers of the Alexander Technique (who undergo 1600 hours of training over three years) to age-matched control subjects, resistance was 50% lower while phase advance was greater. Similar changes (to a lesser degree) occurred in subjects with lower back pain after undergoing ten weekly lessons in the Alexander Technique. These results suggest that the Alexander Technique enhances dynamic modulation of postural tone.
Cacciatore TW, Gurfinkel VS, Horak FB, Cordo PJand Ames KE. Human Movement Science, 2011 February; 30(1): 74–89.