Understanding altered contractile properties in advanced age: insights from a systematic muscle modelling approach.

"data availability the hill-type muscle model developed in simulink and a matlab application that can be used to run simulations are accessible as open source (under the mit license) from github [ https://github com/dlmayfield/muscle-model (mayfield and lichtwark 2022 )]."

"data availability the hill-type muscle model developed in simulink and a matlab application that can be used to run simulations are accessible as open source (under the mit license) from github [ https://github com/dlmayfield/muscle-model (mayfield and lichtwark 2022 )]."

"Declarations Conflict of interestsThe authors declare no competing or financial interests. Ethical approvalExperimental work was approved by and performed in accordance with the guidelines outlined by the human research ethical review committee of the University of Jyväskylä. Written informed consent was obtained from all participants. Conflict of interests The authors declare no competing or financial interests."

"Funding No funds, grants, or other support was received to directly support this work. G.A.L. is supported by an Australian Research Council Future Fellowship (FT190100129)."