These studies examined the Mendelsohn maneuver  and side-lying posture .
The Mendelsohn maneuver was studied in a case series, quasi-experimental study of participants with CVA .
examined the use of the Mendelsohn maneuver in 25 participants with CVA using sEMG to monitor performance of maneuver .
Three studies reported using the super-supraglottic swallow maneuver [13,15,17], two the effortful swallow [16-17], and two the Mendelsohn maneuver [15,17].
However, data reported from two additional studies suggest this maneuver may not be as effective in preventing aspiration as other interventions, such as the Mendelsohn maneuver [13,15].
Maneuvers studied included the effortful swallow, the Mendelsohn maneuver, the supraglottic swallow, and the super-supraglottic swallow.
Surface electromyographic and electroglottographic studies in normal subjects under two swallow conditions: Normal and during the Mendelsohn maneuver.
Maneuvers studied included effortful swallow, the Mendelsohn maneuver, supraglottic swallow, and super-supraglottic swallow.
Three studies examined the Mendelsohn maneuver [15,18,23], three examined the supraglottic swallow [15-16,26], and three examined the super-supraglottic swallow [15,26,30].
The EBSR provides some support for the use of swallowing postures and maneuvers, specifically, the Mendelsohn maneuver (Valsalva maneuver during swallow) for individuals after head and neck cancer treatment [7-9].
The Mendelsohn and effortful swallow maneuvers were attempted under fluoroscopy based on the evidence that the Mendelsohn maneuver reduces aspiration and improves oral intake for individuals with head and neck cancer and that the effortful swallow has an effect on lingual pressures in normal subjects.
The systematic reviews investigated the specific compensatory swallowing postures and maneuvers commonly used by SLPs, including side lying, chin tuck, head rotation, effortful swallow, Mendelsohn maneuver
, supraglottic swallow, and super supraglottic swallow, and examined the impact of these treatments on physiology, functional swallow ability, and pulmonary health for nondisordered healthy adults, neurological populations, and head and neck cancer populations.