**3. Results**

The basic characteristics of participants are shown in Table 1. Results demonstrated that girls slightly outperformed boys in total FMSTM score (12.7 ± 2.4 and 12.2 ± 25, respectively; *p* = 0.0054).


**Table 1.** Basic characteristics of participants by sex.

Note: BMI: Body Mass Index; Functional Movement Asymmetries *n* (%): Number (*n*) and percentage (%) of participants who exhibited Functional Movement Asymmetries within each sex group; Sport Participation *n* (%): Number (*n*) and percentage (%) of participants that participated in sport activity; SES: Socioeconomic status (1—Much lower than average, 2—Lower than average, 3—Average, 4—Higher than average, 5—Much higher than average); IQR: Interquartile Range; SD: Standard Deviation; \* Data are presented for 725 participants.

Figure 2 depicts the proportion (%) of DFM patterns among girls and boys in all seven FMSTM tests. Girls demonstrated a higher proportion of DFM patterns compared to boys in trunk stability push-up (81% vs. 44%, *df* = 1, *p* < 0.0001) and rotary stability (54% vs. 44%, *df* = 1, *p* = 0.0075). However, boys showed a higher proportion of DFM in inline lunge (32% vs. 22%, *df* = 1, *p* = 0.0009), shoulder mobility (47% vs. 26%, *df* = 1, *p* < 0.0001), and ASLR (31% vs. 9%, *df* = 1, *p* < 0.0001), while scores in deep squat and hurdle step were similar in both sexes (see Figure 2).

**Figure 2.** Proportion (%) of adolescent girls and boys who performed dysfunctional movement (DFM) in each Functional Movement Screen™ (FMSTM) test. Note: DS: deep squat; HS: hurdle step; IN-L: inline lunge; SHO MOB: shoulder mobility; ASLR: active straight leg raise; P-UP: Trunk stability push-up; ROT STAB: rotary stability. \* *p* = 0.0009; \*\* *p* < 0.0001; \*\*\* *p* = 0.0075.

Boys demonstrated a higher proportion of movement asymmetries compared to girls in shoulder mobility (45% vs. 36%, *df* = 1, *p* = 0.0218) and ASLR (21% vs. 13%, *df* = 1, *p* = 0.008). However, no significant difference between girls and boys in the proportion of the movement asymmetries was found for the other FMSTM tests: hurdle step (27% vs. 24%, *df* = 1, *p* = 0.331), inline lunge (31% vs. 31%, *df* = 1, *p* = 0.95), and rotary stability (26% vs. 22%, *df* = 1, *p* = 0.237) (see Figure 3).

**Figure 3.** Proportion (%) of adolescent girls and boys who demonstrated movement asymmetries in each FMSTM test. Note: HS: hurdle step; IN-L: inline lunge; SHO MOB: shoulder mobility; ASLR: active straight leg raise; ROT STAB: rotary stability. \* *p* = 0.0218; \*\* *p* = 0.008.
