This project contains all code, data, and results that pertain to manuscript entitled "Muscle-spring dynamics in time-limited, elastic movements". M.V. Rosario1+, G.P. Sutton2, S.N. Patek1, and G.S. Sawicki3 1Department of Biology, Duke University, Durham, NC, U.S.A. 2School of Biological Sciences, University of Bristol, Bristol, U.K. 3Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, Raleigh, NC, U.S.A. +Corresponding author: M. V. Rosario Department of Ecology and Evolutionary Biology Brown University Providence, RI 02912 U.S.A. Telephone: (408) 372 – 7015 Email: michael_rosario@brown.edu All R scripts used to generate data can be found in the folder entitled "Fixed-end contraction R code." Please refer to the wiki in that folder for instructions. The foldered entitled "sensitivity analyses" includes code, data, and figures that were used in the Supplementary Material of the manuscript.