Dataset for Humans choose trunk lean angles consistent with minimal metabolic costs - an integrative experimental and musculoskeletal simulation approach

This dataset contains experimental and simulation data from treadmill running at 2.5 m/s, examining how systematic variations in trunk lean affect metabolic cost and running mechanics in 28 recreational runners. It includes raw marker trajectories and ground reaction force data, as well as processed metabolic measurements for all participants across five predefined trunk lean conditions and one self-selected condition, spanning trunk lean angles from 8.5° (upright) to 40° (forward). Stride-averaged and normalised kinematic and kinetic data (joint coordinates, ground reaction forces, and moments) are provided for each condition and serve as inputs for the subsequent optimal control simulations in MocoTrack. Musculoskeletal simulation input and output files are also included, comprising representative joint coordinates, moments, ground reaction forces, simulated kinematics and kinetics, muscle activations, muscle fibre kinematics, and both muscle-specific and whole-body energetics.