## 3 Results
### Characteristics of the Intervention Programs  
The strength and dynamic stability showed in Table 3 were the contents of INT and were included in the analyzed studies [19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32]. Plyometric training was used in ten studies [19; 20; 21; 22; 24; 26; 28; 30; 31; 32]. Three studies [19; 20; 27] included coordination performance fundamental movement skills training in their intervention programs, while four [22; 24; 28; 32] used agility training and two-speed training [20; 24]. The length of the exercise programs varied in the included studies from six weeks to eight months. Study duration was six weeks in two studies [20; 28], eight weeks in four [21; 23; 24; 25], and 10 weeks in other three studies [19; 26; 31]. The remaining studies had a duration of: 11 weeks [27], 12 weeks [29], 16 weeks [32], 20 weeks [22], and eight months [30]. The frequency of the sessions for most studies was two times per week [19; 23; 24; 25; 27; 28]. The exceptions were four studies in which participants had three training sessions per week [20; 21; 26; 31] and two studies that had a variable duration between two and three sessions per week [29; 32]. Conjointly, in one study [30], the intervention group was trained 15 consecutive sessions and thereafter one session per week. Information regarding the number of training sessions per week was not provided in one study [22]. The duration of the sessions was between 15 and 20 min in most studies [19; 22; 23; 27; 29; 30; 31; 32], throughout the time, in other three studies, the sessions lasted 60 min or more (20,25,28). Three studies [21; 24; 26] did not provide any information related to the duration of the sessions. In these studies, participants performed five to six exercises of strength, pyometric and dynamic stability training [21; 26], or pyometric, agility and speed training after eight minutes of dynamic warm-up [24]. \begin{table}
\begin{tabular}{l l l l l} \hline \hline
**Author** & **INT Contents** & **Duration** & **Frequency** & **Program** \\ \hline \hline \multirow{4}{*}{[PERSON] [19]} & Strength, polymetrics, dynamic & \multirow{4}{*}{10 wk} & \multirow{4}{*}{2z/wk} & \multicolumn{2}{c}{NMT: 20 min/session, 6 min warm-up, including agility exercises, coordination (4 min), balance (4 min), and strength-plyonsetic exercises (6 min).} \\  & stability, and coordination. & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\ \hline \multirow{4}{*}{[PERSON] [20]} & Strength, polymetrics, dynamic & \multirow{4}{*}{6 wk} & \multirow{4}{*}{33 wk} & \multicolumn{2}{c}{NMT: 6 min standard neuromuscular training (core strength, blumery, resistance, and speed training)} \\  & stability, speed, and coordination. & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\ \hline \multirow{4}{*}{[PERSON] [21]} & Strength, polymetrics, and dynamic & \multirow{4}{*}{8 wk} & \multirow{4}{*}{33 wk} & \multicolumn{2}{c}{Bi-PIVO and PIKOV did five different exercises per session (strength, glyimetrics and dynamic stability), 1/2 sets of 8-15 reps.} \\  & stability. & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\ \hline \multirow{4}{*}{[PERSON] [22]} & Strength, agility, polymetrics, and dynamic stability. & \multirow{4}{*}{20 wk} & \multirow{4}{*}{Not provided} & \multicolumn{2}{c}{NMT: 5 min warm-up including aerobic, state and dynamic} \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\  & & & & & \\ \hline \multirow{4}{*}{[PERSON] [23]} & Strength and dynamic stability & \multirow{4}{*}{8 wk} & \multirow{4}{*}{2z/wk} & \multicolumn{2}{c}{NMT: 15 min sessions of INT followed by regularly scheduled 43 min} \\  & training.