Mechanical properties of the shoulder and pectoralis major in women undergoing breast-conserving surgery with either axillary dissection and breast and regional nodal radiotherapy or sentinel node surgery and breast radiotherapy only - Full Dataset

Shoulder Stiffness Data:<br>Participant ID<br>Group <i>(1 =ALND + Breast/Nodal RT; 2 = SNB + Breast RT; 3 = Healthy Controls)</i>Activation<i>(0 = 0% MVC -e.g. at rest; 1 = -10% MVC; 2 = 10% MVC)</i>Direction<i>(0 = Vertical Plane; 1 = Horizontal Plane)</i>Shoulder Stiffness (Units: Nm/rad)<br>Muscle Stiffness and RT Data:Participant ID<br>Group <i>(1 =ALND + Breast/Nodal RT; 2 = SNB + Breast RT; 3 = Healthy Controls)</i>Activation<i>(0 = 0% MVC -e.g. at rest; 1 = 10% MVC in Vertical Direction; 2 = 10% MVC in Horizontal Direction)</i>PM_Muscle<i>(0 = Sternocostal Region of Pectoralis Major; 1 = Clavicular </i><i>Region of Pectoralis Major</i><i>)</i>Shear Wave Velocity (Units: m/s)Mean_RT_Dose (Units: Gy)V40_RT_Dose (Units: normalized to percentage)Note: There is no RT data for healthy controls as these participants did not undergo cancer treatment.<br><br>