A simulation study on the necessity of muscle contraction dynamics in cross-country skiing
(English)Manuscript (preprint) (Other academic)
Competitive cross-country skiing is considered to be a fast and powerful dynamic movement. It is unknown what level of complexity that is needed in a musculoskeletal model of a skiing movement, e.g. double-poling. Therefore, a simulation study is carried out to explore the influence of muscle model choice. The theoretical framework of two types of muscle models and their respective implementations are given. These models are a Hill-type model with contraction dynamics and a constant force model, respectively. Results show that it is necessary to incorporate muscle contraction dynamics to estimate individual muscle behaviour in double-poling. Moreover, it may be bad practice to model different body parts with different muscle models; the musculoskeletal system is not a collection of discrete uncoupled body parts and kinetic effects will propagate through the system.
Double-poling, fast movements, Hill-type muscle, musculoskeletal model
Applied Mechanics Sport and Fitness Sciences
IdentifiersURN: urn:nbn:se:liu:diva-75335OAI: oai:DiVA.org:liu-75335DiVA: diva2:505850
ProjectsBeräkningsbaserad biomekanik inom längdskidåkningen - möjligheter och begränsningar