Mitsunori Toda, Takaaki Chin, Noriaki Maeda, Atsushi Kitagawa, and Hideshi Kohno. 2015. “The Threshold of Physical Fitness in Terms of Maximum Oxygen Uptake As a Predictive Factor for Achieving Prosthetic Walking in Elderly With Unilateral Trans-Femoral Amputation or Hip Disarticulation”. Sports and Exercise Medicine 1 (4):126-32. https://openventio.us/index.php/SEM/article/view/656.