Abdominal morbidity following DIEP vs Muscle sparing TRAM flaps in Breast reconstruction

What is the actual evidence behind DIEP vs muscle sparring TRAM in Breast Reconstruction? Uda H, Kamochi H, Sarukawa S, Sunaga A, Sugawara Y, Yoshimura K. Clinical and Quantitative Isokinetic Comparison of Abdominal Morbidity and Dynamics following DIEP versus Muscle-Sparing Free TRAM Flap Breast Reconstruction. Plast Reconstr Surg. 2017 Dec;140(6):1101-1109