Interval Walking Training (IWT) (IMAGE) Shinshu University Caption Interval Walking Training is a method that is effective in increasing overall fitness and decreasing healthcare costs associated with lifestyle-related diseases of the middle-aged and elderly. Credit Shizue Masuki Ph,D., Institute for Biomedical Sciences, Shinshu University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.