23. Posture and alignment variable The effects of pelvic position and stretching technique on hamstring flexibility: Sullivan, Dejula, Worrell. Krannert Graduate School of Physical Therapy. University of Indianapolis. MSSE. Vol 24, Number 12, 1992 Study specified that anterior pelvic tilt (right) was more effective than posterior tilt (left). But also notice thoracic flexion vs. extension as well.
24. Multidimensional variable A Comparison of 2 Rehabiliation Programs in the Treatment of Acute Hamstring Strains . Sherry and Best. Journal of Orthopaedic Sports Therapy. 2004; 34:116; 116-125. Compared traditional static stretching, isolated progressive hamstring resistance exercise and icing (STST) with a program of progressive agility and trunk stabilization exercises and icing. (PATS) Results – Return to sports STST – 37.4 days; PATS, 22.2 days Results – Re-injury rate 2 weeks after – STST, 54%; PATS, 0% 1 year after – STST, 70%; PATS, 7.7%
62. Elevated or upright posture opens up chest cavity. The heart and aorta have ample room to deliver blood and oxygen to the body. The lungs can expand to full capacity. An extreme example of how a slouched posture can compress heart, lungs, aorta and interfere with proper cardiovascular activity. Another extreme example but compression can also occur in the lower organs like stomach, liver, spleen, uterus Proper Thoracic extension goes beyond arthrokinetic issues and into cardiovascular efficiency