Sonography
Muscle thickness of the BF was assessed using the same ultrasound device; participants were positioned as reported for TMG measurements. A 10L4 linear array probe (50 mm width) was held with minimal pressure over the marked site. Muscle thickness was measured from the lower margin of the upper fascia to the upper margin of the lower fascia. The ultrasound images were saved at each timepoint and were used as a reference for the following measurement to increase between-day repeatability, which has been shown to be excellent in our laboratory (ICC: 0.96 [CI 95% 0.91–0.98]) (Schwiete et al. 