Effects of Low-Level Laser Therapy and Eccentric Exercises in the Treatment of Patellar Tendinopathy

Table 3

Changes in relative quadriceps muscle strength before and after treatment in all therapy groups.

Group	Before treatment	After treatment	Change over time
Laser	0.38±0.04	0.54±0.06^∗∗	0.16±0.08
Exercise	0.38±0.10	0.57±0.12^∗∗	0.19±0.09
Laser + exercise	0.44±0.14	0.75±0.10^∗∗	0.31±0.10^△#

Values are expressed in kg/kg body weight. Asterisks indicate significant differences from pretreatment (^∗∗𝑃<0.01). Triangles indicate significant differences from the laser group (^△𝑃<0.05). Crosses indicate significant differences from the exercise group (^#𝑃<0.05).