Foot shape-function model data

The human foot is a complex structure that plays an important role in our capacity for upright locomotion. Comparisons of our feet to those of our closest extinct and extant relatives have linked shape features (e.g., the longitudinal and transverse arches, heel size and toe length) to specific mechanical functions. However, foot shape varies widely across the human population, so it remains unclear if and how specific shape variants are related to locomotor mechanics. Here we construct a statistical shape-function model (SFM) from 100 healthy participants to directly explore the relationship between the shape and function of our feet. We also examined if we could predict the joint motion and moments occurring within a person’s foot during locomotion based purely on shape features. The SFM revealed that the longitudinal and transverse arches, relative foot proportions and toe shape along with their associated joint mechanics were the most variable. However, each of these only accounted ..., 3D foot scans (PLY files) while bearing minimal weight (mBW) and full body weight (fBW), as well as a MATLAB file containing foot and ankle joint angles and moments from level, incline and decline treadmill walking and running., , # Foot shape-function model data

3D foot scans (PLY files) while bearing minimal weight (mBW) and full body weight (fBW), as well as a MATLAB file containing foot and ankle joint angles and moments from level, incline and decline treadmill walking and running.

## Description of the data and file structure

### 3D foot scans (\~920 MB):

The 3D foot scans, collected while the participant's dominant foot was either bearing minimal weight (mBW) or their full body-weight (fBW), are provided as PLY files.
File names contain the participant's ID, the weight-bearing condition and which foot was scanned (e.g., *045_fBW_R.ply*: a scan of the 45th participant's right foot while bearing full body-weight).
For left-foot dominant participants, the foot scan was reflected about its length axis to be comparable to the feet of right-foot dominant participants. Hence, the filenames for these scans contain *Lr* instead of *R*.

### Joint Kinematics and Kinetics (\~280 MB):

The file *treadmill_data.m...