Replication data for: Intra-assessor reliability and measurement error of ultrasound measures for foot muscle morphology in older adults using a tablet-based ultrasound machine

The data consist of morpholgy measures for selected foot muscles and plantar fascia derived from ultrasound images repeatedly collected at two occasions, 1-8 days apart, in older and younger adults using two different ultrasound machines. The package also contains the measurement properties (i.e., ICC and standard error of measurement) and the scripts used to obtain these. The main goal of this study was to investigate the intra-assessor reliability and measurement error of ultrasound measures for the morphology of selected foot muscles and the plantar fascia in older adults using a tablet-based ultrasound machine. The secondary aim was to compare the measurement error between older and younger adults and between two different ultrasound machines.