An improved method to determine neuromuscular properties using force laws - From single muscle to applications in human movements.

摘要: We evaluate an improved method for individually determining neuromuscular properties in vivo. The is based on Hill's equation used as a force law combined with Newton's of motion. To ensure the range validity equation, we first perform detailed investigations vitro single muscles. force-velocity relation determined model coincides well results obtained by standard methods (r= .99) above 20% isometric force. In addition, model-predicted curves during work loop contractions very agree measurements (mean difference: 2-3%). Subsequently, deduce theoretically under which conditions it possible to combine several muscles human body This leads leg extension movements containing parameters muscle and activation. numerically determine these invariant devise experimental concentric extensions. With this individual from experiments such that simulated (r =.99). A reliability test 12 participants revealed correlations r = .72-.91 (p <.01). Predictions similar different show mean errors about 5%. present applications sports practise theory.