Finnamore E, et al. - Researchers examined Achilles tendon transverse stiffness in a group of recreational runners with Achilles tendinopathy, in comparison to an asymptomatic group of runners with similar training history in the current cross-sectional study. Further, they examined this measurement technique for the between-week intra-individual reliability. Using a hand-held dynamometer, the transverse stiffness of the Achilles tendon (AT) was assessed in 25 recreational runners. Measurements were taken directly over the most symptomatic location in ten people with midportion Achilles tendinopathy (5 men, 5 women). They performed measurements at an equivalent location on the tendon in 15 people who were free of AT symptoms (7 men, 8 women). Measurement reliability was assessed when the participants returned after one week (intra-class correlation coefficient/ICC and minimum detectable change/MDC95). In people with midportion Achilles tendinopathy, transverse Achilles tendon stiffness can be reliably measured. People who are older, more symptomatic, and with more extensive tendon thickening showed lower stiffness.