Cardiopulmonary resuscitation (CPR) is an emergency maneuver used in a victim who is in cardiac arrest. Early and efficient CPR, with special focus on chest compressions, is a key element to improve patient's survival. The focus for success in resuscitation should not only be the rapid onset of the maneuvers, but also the quality with which they are applied. There are several ways to improve CPR quality, taking training an important role and being relevant for skills acquisition and retention, for both healthcare professionals and laypeople. American Heart Association (AHA) recently recommended the use of technology-enhanced simulators and learning management systems to tailor the training and promote retention. Both training methodologies and support devices are built considering fundamental research, aiming the improvement of patient's outcomes. Based on these scientific developments, guidelines are established focusing on several aspects related to resuscitation, presenting variants of the procedures and considering the profile of the victim. Therefore, studying the quality of CPR and the factors that influence the rescuer's performance is very relevant. The study of fatigue in CPR maneuvers has appeared in the literature mainly after the recent updates to the guidelines. In addition to intrinsic fatigue, there are other extrinsic factors to the CPR maneuver that influence its quality, such as the posture and the position of the rescuer, among others. Most published studies investigate the influence of a single factor in CPR quality, as opposed to the combination of the above-described factors in correlation with rescuer fatigue. We consider this void in literature an opportunity to explore how these factors correlate among them, and how they influence CPR performance and quality. We anticipate that the results from this multi-centre, international project will promote rescuer awareness to specific posture/positioning that influence their fatigue and performance, through the formal development of recommendations to, ultimately, promote high quality CPR. It is expected that this study will provide translational validity, as it is expected to result in changes in current clinical practice.