Horse Ages: h48 4 years h55 4 years h67 3 years h82 6 years h94 3 years h95 3 years h101 6 years h108 5 years h84 20 years h85 18 years h99 20 years h100 20 years h105 20 years Abbreviations: FL - Fatigue Loaded File Naming: Images: (date)-horse number-tendon type-fascicle number-applied strain Mechanical Test data: horse number-tendon type-fascicle number-test condition