Figure 1 (IMAGE) Tohoku University Caption The new model allows scientists to simulate the effects of exercise on human muscle cells grown in the lab. Credit Tohoku University Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original 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.