Abstract
The mechanical model of human body including muscle and tendon unit that is based on the Hill-type model is represented by use of Bond Graph method. From the result of calculation using this model, the coefficient for the characteristics of tendon length-tension relation is gained at the jumping motion. On the other hand, by use of the experimental data from Kawakami (Kawakami et al. 2012) instead of calculation results, dynamic muscle behavior at jumping motion derived from relative relation between muscle and tendon are represented as a dynamic loop on the muscle change length -tension characteristics. This analytical method is possible to be quantitative for tension change at repeated motion. This loop is also easy to understand dynamic characteristics of it by visualization.
