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:Participant IDGroup (1 =ALND + Breast/Nodal RT; 2 = SNB + Breast RT; 3 = Healthy Controls)Activation(0 = 0% MVC -e.g. at rest; 1 = -10% MVC; 2 = 10% MVC)Direction(0 = Vertical Plane; 1 = Horizontal Plane)Shoulder Stiffness (Units: Nm/rad)Muscle Stiffness and RT Data:Participant IDGroup (1 =ALND + Breast/Nodal RT; 2 = SNB + Breast RT; 3 = Healthy Controls)Activation(0 = 0% MVC -e.g. at rest; 1 = 10% MVC in Vertical Direction; 2 = 10% MVC in Horizontal Direction)PM_Muscle(0 = Sternocostal Region of Pectoralis Major; 1 = Clavicular Region of Pectoralis Major)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.