Effects of combined training with breathing resistance and sustained physical exertion on cardiorespiratory endurance in middle-aged and elderly subjects

S. Kido1, W. Yu2, Y. Nakajima3, T. Tanaka4, T. Miyasaka 5, S. Shirogane 6, Y. Yamanaka7, Y. Sunaga 1, H. Maruoka1, K. Takayanagi 1 1 Saitama Prefectural University, Department of Physical Therapy, School of Health and Social Services, Saitama, Japan; 2 Chiba University, Department of Medical System Engineering, Graduate School of Engineering, Chiba, Japan; 3 Hokkaido Research Organization, Industrial Research Institute, Hokkaido, Japan; 4 The University of Tokyo, Research Center for Advanced Science and Technology, Tokyo, Japan; 5 Hokkaido University of Science, Department of Physical Therapy, Faculty of Health Science, Hokkaido, Japan; 6 National Rehabilitation Center for Persons with Disabilities, Department of Assistive Technology, Saitama, Japan; 7 Himeji Dokkyo University, Hyogo, Japan