During healing, daily doses of PBM therapy for 7 weeks had mild sex-dependent effects on the mechanical properties of the mouse Achilles tendon. (A) Stiffness, (B) Young's modulus, (C) ultimate strain, (D) ultimate load, (E) ultimate stress, and (F) area under the curve (AUC) for control (Ctrl, white bars) and PBM (gray bars) treated tendons of males and females. Data are presented as mean ± standard deviation. Bars represent significant differences (P < .05). Male and female data points are blue and pink, respectively. PBM, photobiomodulation